CN102458798A - Fuel tank or filler pipe for tank - Google Patents

Fuel tank or filler pipe for tank Download PDF

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Publication number
CN102458798A
CN102458798A CN2010800279861A CN201080027986A CN102458798A CN 102458798 A CN102458798 A CN 102458798A CN 2010800279861 A CN2010800279861 A CN 2010800279861A CN 201080027986 A CN201080027986 A CN 201080027986A CN 102458798 A CN102458798 A CN 102458798A
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CN
China
Prior art keywords
storage tank
pipe
layer
tank
described multilayer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010800279861A
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Chinese (zh)
Inventor
菲利普·马丁
比约恩·克里埃尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plastic Omnium Advanced Innovation and Research SA
Original Assignee
Inergy Automotive Systems Research SA
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Filing date
Publication date
Application filed by Inergy Automotive Systems Research SA filed Critical Inergy Automotive Systems Research SA
Priority to CN201510088642.6A priority Critical patent/CN104943304A/en
Publication of CN102458798A publication Critical patent/CN102458798A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles

Abstract

A fuel tank or a filler pipe for the tank comprising a multilayer wall constituted at least of one layer based on a reinforced thermoplastic composition and of one inner layer, intended to be in contact with the fuel, based on a non-reinforced thermoplastic composition. Use of such a tank/pipe in a hybrid vehicle.

Description

Fuel tank perhaps is used for the filler pipe of this storage tank
The present invention relates to a kind of fuel tank or be used for a kind of filler pipe of this storage tank, and relate to their purposes as the storage tank/pipe in the hybrid power engine vehicle.
Hybrid power engine typically refers to an internal combustion engine and a motor combination.
For hybrid power engine, have a general operation principle, this operation principle is to come service meter, also or operation of combustion engine, perhaps move the two simultaneously according to model.
One of these concrete principles are as follows:
In process segment (when's vehicle is in when static) process, two engines all are closed;
When starting, be the motion that motor is provided with vehicle, until higher speed (25 or 30km/h);
When reaching higher speed, take over by internal combustion engine;
Under situation about quickening fast, two engines move simultaneously, this make it to have equate with the engine of equal-wattage, perhaps even higher acceleration;
In deceleration and deboost phase, kinetic energy is used for to battery charge (should be noted that this function is all not available in current commercially available all hybrid power engines).
This principle causes this internal combustion engine can not move consistently; And therefore cause the cleansing phase of canister (preventing the charcoal filter that fuel vapour is discharged into the atmosphere) normally not carry out; Because in the process of these cleansing phases; The randomly pre-heated air of quilt is recycled through this canister so that make this canister regeneration (that is, so that make the fuel vapour desorption that is attracted to wherein), allows this air to enter into engine afterwards so that burning therein.In addition, motor vehicle driven by mixed power is developed in order to reduce fuel consumption and toxic emission, under the situation that engine performance is worsened, more be difficult to like this or even possibly not carry out engine management so as burning from the fuel vapour of canister.
Therefore; Usually the fuel tank with these engines pressurizes (typically reaching about 300 to 400 millibars pressure) so that the load of restriction canister; Normally a functional element after these ventilation valves carries out by being positioned at for this, and this element is called as FTIV (fuel tank isolating valve).This element comprises a safety valve (being calibrated the maximum working pressure (MWP) to this storage tank) and a kind of electronic-controlled installation, so that can before injecting, make this storage tank be in atmospheric pressure.Consequently, particularly under the situation of plastics storage tank, these storage tanks are compared with the fuel tank of the internal combustion engine of routine must have improved mechanical strength.
Solution on market comprises a kind of metal storage tank with big thickness at present, and this has increased the weight of storage tank considerably and has therefore increased fuel consumption and toxic emission.
Other known solutions for above-mentioned stress problems possibly comprise: increase the wall thickness of plastics storage tank and/or use inside fortifier that these two walls are linked together (bar, separator, or the like), but these solutions have produced adverse effect, reduced the swept volume of storage tank and increased the cost of storage tank for weight usually.Another solution can be to this storage tank provides a plurality of attachment pin (attachment stud) (or a plurality of point (kiss points) that touches, that is, the local solder joint of lower part wall and top wall), but this solution causes the swept volume of storage tank to reduce.
At patent US 5; 020; Described another kind of solution in 687, this solution is a kind of reinforced fabric is attached on the outer wall of storage tank, this attached being performed such: storage tank pass through extrude-coat molded said fabric in the manufacture process of blow molding; Before in mould, introducing parison, fabric is incorporated in the mould, after this parison of blow molding, will obtains this storage tank.
Yet this solution has following several kinds of defectives:
In fact, this fabric has only been produced local enhancing at it by attached position;
See from long-term angle, fuel vapour through the diffusion of this tank wall possibly cause expansion problem, or even the viscosity loss of fabric on the tank wall, therefore reinforced effects is reduced;
Because employed technology, with regard to the geometry of the thickness of fiber and/or mould, exist multiple restriction;
And last: the fortifier of this type is that comparison is expensive.
Therefore a theme of the present invention is a kind of fuel tank or the filler pipe that is used for this storage tank, and it has the mechanical strength of good long term and can not have above-mentioned these defectives.
Thought based on the plastics composite that uses a kind of enhancing; Be a kind of plastics; Wherein disperse/mix (for example: in the molten state of plastics, use an extruder) that a kind of fortifier (specifically being a kind of fibre strengthening thing) is arranged, this itself is known; But in the internal layer of multilayer storage tank (internal layer that promptly comes in contact with fuel), do not use a kind of like this composition, and (if suitably) only in this skin and/or in an intermediate layer, use.In fact; The applicant observes; When the internal layer of storage tank comprises a kind of fortifier (being specially: when it comprises fiber), the impact strength of these storage tanks is decreased to a kind of degree significantly and is made that they no longer can be through these standards of motor vehicle manufacturers defined.On the other hand; (value of this thickness depends on the composition of said layer to have thickness sufficient at the internal layer that a non-enhancing is provided, this internal layer; But this thickness be as general as relative thickness at least 20% or 30% or even 40%) under the condition; No longer observe this reducing, and even be more preferably: in some cases even can observe a kind of substantial improvement.
Therefore the present invention relates to a kind of fuel tank or is used for the filler pipe of this storage tank; This fuel tank or filler pipe comprise a compound wall, and this compound wall is at least by based on one deck of the thermoplastic compounds that strengthens and be intended to contact with fuel and constitute based on an a kind of internal layer of thermoplastic compounds of non-enhancing.
The fuel expection that is used for according to storage tank of the present invention/pipe can be gasoline, diesel oil, bio-fuel etc., and can have 0 to 100% alcohol content.
Statement " storage tank or pipe " is interpreted as being meant through at least two above-mentioned layers are carried out any storage tank or pipe molded or that coextrusion obtains.
Can be used to make and to have any character, as long as it comprises that using one can confirm the maybe mould of the shape of this pipe of this storage tank according to the storage tank of finite length of the present invention or a kind of molded operation of pipe.This molded operation can for example begin or directly be incorporated into the mould through the thermoplastic with gel to carry out from a kind of preformed.
This molded operation can also interrelate with a kind of blow molding operation particularly.It can also follow a follow-up number of assembling steps, especially through welding.If this molded operation begins to carry out from a kind of preformed, then this preformed specifically can through coextrusion or be total to inject and obtain.
Used through coextrusion-blow molding molded, through the molded of injection-welding altogether or through the hot-forming molded very good result that obtained.Preferably, this multilayer storage tank or pipe are to produce through coextrusion-blow molding (blow moulding, blowing).In the latter's situation, all technology that might use a kind of continuous extruding technology or a kind of to build up extruding technology or a kind of order extruding technology, know for those of ordinary skill in the art.
This term " thermoplastic " is interpreted as representing any thermoplastic polymer, comprises thermoplastic elastomer (TPE) and the blend that also has them.Term " polymer " " be construed as expression homopolymers and copolymer (copolymer particularly binary or ternary) the two, for example, random copolymer, linear block copolymers, other block copolymers and graft copolymer etc.
The plastics of this internal layer and the plastics of this enhancement layer can (and preferably) have identical character.In the situation of fuel tank, this is polyolefin normally.Term " polyolefin " is interpreted as being meant that any olefin homo, any copolymer that comprises at least two kinds of different alkene and any comprises by weight the copolymer of at least 50% multiple unit derived from alkene.In blend, can also use several polyolefin.More particularly; Except the polyolefin of pure (virgin); This blend can also comprise polyolefin, or a kind of blend of the multiple regeneration resin of a certain ratio of the regeneration of a certain ratio, and this blend results from (i) and the clout that different phase obtained of making this multilayer storage tank or pipe is ground and/or (ii) the fuel tank that finishes service life regenerated and handle.This blend can also comprise that a kind of polyolefin of plant origin is perhaps from the reproducible source of another kind (biomaterial).
Preferably, this polyolefin is a kind of polyethylene.Obtained very good result through a kind of high density polyethylene (HDPE) (HDPE).
These plastics composites can comprise multiple conventional additives; As a kind of (or multiple) stabilizing agent that provides, lubricant, pigment and other " filler ", yet one or more additives of internal layer do not have reinforced effects and/or so that they do not have a value of appreciable impact to its mechanical property and exist.
Term " enhancing " is construed as; In the context of the present invention; Expression comprise a mixture of a kind of fortifier or multiple fortifier, this or these fortifiers be in the state of dispersion (promptly be in " dissociate " particle that mixes with plastics form, with as particle (fiber) knitting or winding in weaving fiber or felt on the contrary), be in and make it have a value of appreciable impact for the mechanical property of composition.In this stage; Should between (i) microcosmic filler/fortifier and (ii) nano-filled thing, make differentiation; For microcosmic filler/fortifier; Obtained appreciable impact with high fill level (being typically greater than 10%), and for nano-filled thing, obtained huge change for these characteristics with the reinforcement of a few percent only to these characteristics.
Generally, these are fibre strengthening thing (carbon fiber, natural fiber, glass fibre or the like), beading (for example glass beading, hollow beading) generally or small pieces (for example, talcum, clay, imvite, vermiculite, expanded graphite, Graphene).They are fiber preferably.Certainly, except having for the mechanical property of composition those fortifiers of appreciable impact, it has been generally acknowledged that powder (carbon black, chalk, talcum, barium sulfate or the like) is not the fortifier within background of the present invention.In the context of the present invention, glass fibre and the particularly short glass fibre with long have provided good result.For short fiber; Through disperseing to have obtained good result; In HDPE, based on the fiber (specifically being to be equipped with a kind of sizing agent and/or a kind of compatilizer) of E type glass like PE-g-MAH have the diameter between the 10 and 20 μ m and 2 and 8mm between initial length.
According to a preferred variant; Select glass fibre as reinforce; This reinforce is combined (preferably equably with a value particularly; Usually through in extruder, mixing so that produce the masterbatch pellet) in an intermediate layer and very specifically as above description by grinding in the layer that produces, this value be the 10%-50% contrast meter of the gross weight of this mixture (by weight with), or even 20%-40%, about 30% content provides good result usually.
In fact, the applicant blow molding gone out at internal layer and had between outer field these 2 layers of pure PE of 20% relative thickness accordingly based on pure HDPE (Lupolen with about 45% relative thickness (with respect to the gross thickness of wall)
Figure BDA0000123814350000061
4261AG, density is 0.945g/cm 3And the bottle that is in single layer structure with 6g/10min (190 ℃/21.6kg) HLMI), and based on a kind of HDPE but comprise one deck industry again abrasive, like the bottle of 6 layers of storage tank of above qualification.The applicant has changed in several kinds of tests in content and the latter end at this specification of glass fibre and in form, has presented observed accordingly characteristic.
Concrete, when it comprises at least one based on poly layer, preferably also comprise a barrier layer and/or preferably be subjected to a kind of surface treatment (for example :) a kind of fluorination or a kind of sulfonation of its internal layer according to storage tank of the present invention.Preferably, it comprises a barrier layer of being processed by a kind of thermoplastic equally, and this barrier layer is the non-enhancing internal layer, also or an intermediate layer between internal layer and enhancement layer of storage tank normally.
Under the background of this variant of the present invention, operable barrier resin possibly have known any character for those of ordinary skills, as long as it is a kind of polymer or copolymer compatible mutually with the molding technique of discussing.It can also be a kind of mixture of different blocking resin.In these operable trees refer to, mentioned polyamide or copolyamide or random ethylene/vinyl alcohol (EVOH) copolymer especially.
Any copolymer that term " polyamide " is interpreted as being meant any homopolymers based on an amide units, comprise any copolymer of at least two kinds of different amide units and comprise by weight at least 50% multiple unit derived from acid amides.These amide units under this definition are that what to obtain through the ring of opening a ring type polyamide or the polycondensation through dicarboxylic acids and diamines is inessential.Several kinds of polyamide can also use as a kind of blend.Can mention (non-limiting): PA-6, PA-11, PA-12 and n-mXD6 (polyarylamide) as the instance of operable polyamide.PA-6 is normally preferred.
In following situation, obtained favourable result; Wherein, this stop resin be EVOH and concrete be that (normally through 2 adhesives that insert two-layer based on PE at the interface at EVOH/HDPE) have an intermediate barrier layers based on EVOH between 2 layers of HDPE.In following situation, also obtained favourable result, wherein, stopped that resin is a kind of polyarylamide of n-mXD6 type that constitutes the internal layer of this structure.
Comprise that this layer that stops resin can also comprise some additive that those of ordinary skills know, these additives can be or can not be polymer class, like stabilizing agent, lubricant or the like.
Preferably, comprise that this this layer that stops resin is basically by stopping that resin constitutes.
Usually (and under the situation with HDPE and EVOH or HDPE and polyamide occasionally), this stops that resin and the thermoplasticity resin of other layers of storage tank/pipe are compatible mutually.Therefore, generally speaking, one deck or even two layers of adhesive at least are provided between other layers of barrier layer and that contacts with it or 2.Substituting ground or additivity ground can be with mixing with this resin with the compatible mutually a kind of adhesive of this thermoplastic resin.
Preferably, adhesive discussed above comprises the polyolefin of at least a functionalization.
This statement " polyolefin of functionalization " is interpreted as being meant except derived from any polyolefin that also comprises a plurality of functional monomers unit the unit of alkene.These functional monomer unit can be combined in the polyolefin, are combined in the main chain, perhaps are combined in the side chain.They can also directly be combined in the skeleton of said main main chain and side chain; For example, through one or more functional monomers and this or these olefinic monomer being carried out copolymerization or can after making polyolefin, causing one or more functional monomers to be grafted on the said chain.In this case, in especially can be in the method for making this storage tank or the pipe included gelling step of the polyolefinic blend of polyolefin/functionalization through reactivity processing and in an independent step, produce.
In this variant of the present invention, these functional monomer unit are from carboxylic acid, dicarboxylic acids and the acid anhydrides corresponding to said dicarboxylic acids, to select.Therefore, these unit are normally obtained by the copolymerization of at least a unsaturated monomer with these same functional groups or grafting.As the instance of operable monomer, what mention especially is acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, maleic anhydride, fumaric acid anhydride and itaconic anhydride.Preferably, these functional monomer unit result from the copolymerization or the grafting of maleic anhydride.
Therefore the polyolefin of described functionalization for those of ordinary skill in the art be know and be commercially available.
At polyolefin is under a kind of poly situation; Particularly advantageous is to make the polyolefin of functionalization become a kind of polyethylene through maleic anhydride (PE-g-MAH) grafting; That is to say that these functional monomer unit obtain maleic anhydride graft to polyethylene.
Can advantageously comprise one or more extra layers according to multilayer storage tank of the present invention or pipe, these one or more extra layers comprise a kind of regenerated plastics, preferably as an intermediate layer (that is one deck between 2 other layers).
Statement " regenerated plastics " is interpreted as being meant through a kind of the clout that obtains in the different phase of making hollow body (specifically being according to storage tank of the present invention/pipe) is ground, perhaps grinds the plastics that obtain through this type objects that finished service life.
In this variant, fortifier can be combined in this or these regenerated plastics layer.In order to do like this, it is exactly enough from above-mentioned abrasive material, collecting these particles and they are mixed mutually with a kind of pellet that comprises the masterbatch of filler and are transported to this mixture in the extruder of above-mentioned coextrusion-blow molding equipment then.Substituting ground, can with these again abrasive material be used to produce a kind of masterbatch with desirable fortifier composition.This variant is preferred, because it can make these abrasive materials re-used as much as possible.
In a particularly advantageous embodiment of multilayer storage tank according to the present invention or pipe, this multilayer storage tank or pipe comprise 6 layers: based on the internal layer (I) of the HDPE of non-enhancing, be preferably based on PE-g-MAH one first adhesive phase (A1), comprise a kind of barrier resin (being preferably EVOH) a layer (B), be preferably based on PE-g-MAH one second adhesive phase (A2), comprise a kind of fortifier (being preferably glass fibre) based on the layer (R) of regenerating resin and based on the skin (E) of HDPE.
In this embodiment, the relative distribution that advantageously makes thickness as follows (for 1 to 10mm, or even 3 to 7mm gross thickness; Usually near 6mm): I:30%-50%, A1:1%-3%, B:1%-3%, A2:1%-3%, R:30%-60%, E:5%-20%.Advantageously use following structure (to percentage several within): the % number that accounts for general thickness among these layers I/A1/B/A2/R/E each accordingly is 39/2/2/2/45/10.
According to a concrete embodiment, this layer E (contacting with atmosphere) comprises a kind of compound based on carbon black, is used for the purpose of protecting to the UV radiation.
Equally advantageously, having 2 or 3 layers sandwich construction comprises: based on one (interior) layer of n-MXD6, based on the layer of the HDPE (randomly comprising adhesive) that strengthens and an adhesive phase of optional (if this HDPE layer does not comprise any adhesive).
The invention still further relates to as above description, as the purposes of a kind of storage tank/pipe of the fuel tank of motor vehicle driven by mixed power.This storage tank/pipe also can be used in the conventional vehicles, wherein, can utilize this humidification that is obtained to avoid the use of metal tape, and these metal tapes are used for when storage tank is secured on the bottom of vehicle body, preventing the creep of the lower part wall of storage tank generally.
It should also be noted that; The humidification that obtains through theme of the present invention can combine with the use of other known fortifiers; These fortifiers such as the above band spare of mentioning, attachment pin, inner fortifier (bar, separator), coat molded fabric etc., and the inside and outside fortifier of any other type.
The size and/or the quantity that combine to make it to reduce attachment pin, inner fortifier (bar, separator), overmold weaving thing etc. of the present invention and these known technologies.Therefore, make the minimize weight of final scheme and make the swept volume maximization of storage tank.
Figure BDA0000123814350000111

Claims (10)

1. a fuel tank or be used for a kind of filler pipe of this storage tank; Comprise a kind of compound wall, this compound wall is at least by based on a layer of the thermoplastic compounds that strengthens and be intended to contact with fuel and constitute based on an a kind of internal layer of thermoplastic compounds of non-enhancing.
2. multilayer storage tank according to claim 1 or pipe, this multilayer storage tank or pipe are produced through coextrusion-blow molding.
3. according to each described multilayer storage tank or pipe in the above claim, wherein, the thermoplastic compounds of this enhancing comprises a kind of fibre strengthening thing.
4. according to described multilayer storage tank of preceding paragraph claim or pipe, wherein, this fortifier comprises glass fibre.
5. according to described multilayer storage tank of preceding paragraph claim or pipe, wherein, the content of glass fiber of this enhancement layer is between 10% and 50%.
6. according to each described multilayer storage tank or pipe in the above claim, the wall of said storage tank/pipe comprises a barrier layer, and this barrier layer is between 2 HDPE layers, perhaps maybe directly contacts the inboard of this pipe with this storage tank.
7. according to each described multilayer storage tank or pipe in the above claim, the wall of said storage tank comprises a layer based on regenerated plastics.
8. according to described multilayer storage tank of preceding paragraph claim or pipe, wherein, this fortifier is to be included in this intermediate layer based on regenerated plastics.
9. according to described multilayer storage tank of preceding paragraph claim or pipe, said storage tank/pipe comprises 6 layers: based on the internal layer (I) of the HDPE of non-enhancing, preferably based on one first adhesive phase (A1) of PE-g-MAH, comprise a layer (B) of a kind of barrier resin (being preferably EVOH), preferably based on one second adhesive phase (A2) of PE-g-MAH, based on regenerating resin and comprise a layer (R) of a kind of fortifier (being preferably glass fibre) and based on the skin (E) of HDPE.
10. according to each the described storage tank in the above claim or pipe purposes as a kind of fuel tank/pipe of motor vehicle driven by mixed power.
CN2010800279861A 2009-06-08 2010-06-03 Fuel tank or filler pipe for tank Pending CN102458798A (en)

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