CN101659284B - Car-bottom flow deflector and manufacturing method - Google Patents
Car-bottom flow deflector and manufacturing method Download PDFInfo
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- CN101659284B CN101659284B CN2009101953121A CN200910195312A CN101659284B CN 101659284 B CN101659284 B CN 101659284B CN 2009101953121 A CN2009101953121 A CN 2009101953121A CN 200910195312 A CN200910195312 A CN 200910195312A CN 101659284 B CN101659284 B CN 101659284B
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- car
- bottom flow
- flow deflector
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- resin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Abstract
The invention belongs to the material technical field, and relates to a car parts manufactured by a natural fiber material, in particular to a car-bottom flow deflector and a manufacturing method thereof. The car-bottom flow deflector aims at solving the problems of high manufacturing cost and high environmental cost in the existing car-bottom flow deflector made of glass fiber reinforced thermosetting/thermoplastic resin; and the car-bottom flow deflector is prepared from a composite material composed of any two of the natural fiber and resin of sisal, ramie, jute and kenaf, wherein, the natural fiber accounts for 30-40% of the composite material by mass. The car-bottom flow deflector can effectively solve the technical problems; and meanwhile the deflector has the characteristics of light weight, high strength, excellent corrosion resistance, excellent flame resistance, excellent solvent resistance and excellent aging resistance.
Description
Technical field
The invention belongs to the material technology field, relate to a kind of auto parts and components of making by natural material, be specifically related to a kind of car-bottom flow deflector and preparation method thereof.
Background technology
Baffle at bottom as one of auto parts and components can make the smooth sealing of automobile bottom construction, and air-flow can pass through the bottom fast, reduces because the raising force that turbulent flow causes, and has been equivalent to increase the earth-grasping force of tire, has improved the car load stability of running at high speed.
The initial material of baffle at bottom is plastics, and along with the development of automotive technology, glass-fiber reinforced thermo-setting/thermoplastic base resin begins progressively to replace plastics, yet, produce these materials and not only will consume a large amount of natural resourcess and the energy, and the cost height, environmental pollution caused simultaneously.
Summary of the invention
Technical matters to be solved by this invention is that existing automobile bottom guide plate is made by glass-fiber reinforced thermo-setting/thermoplastic base resin, not only to consume a large amount of natural resourcess and the energy owing to produce these materials of glass-fiber reinforced thermo-setting/thermoplastic base resin, cause environmental pollution simultaneously, so manufacturing cost and Environmental costs are all very high.
The present invention solves this technical problem by following scheme:
A kind of car-bottom flow deflector, the composite material that described car-bottom flow deflector is made up of any two kinds of natural fibers in sisal hemp, ramie, jute, the bluish dogbane and resin is made, and the mass percent that described natural fiber accounts for composite material is 30-40%.
Technique scheme has clearly been illustrated car-bottom flow deflector of the present invention and has been made by composite material, this composite material is made up of natural fiber and resin, on the one hand natural fiber can natural degradation at realm of nature, on the other hand, the cost of natural fiber is very low, so, use natural fiber to substitute the material that existing glass fibre is used to make automobile bottom guide plate and can well reduce Environmental costs and manufacturing cost.And be that the composite material of raw material manufacturing is applied in the manufacturing of auto parts and components and can also brings other beneficial effect with the natural plant fibre, for example because the density of composite material is low, therefore use the car mass of this kind material manufacture generally very light, thereby indirect saving the consumption of vehicle fuel, reduced the discharging of greenhouse gases.
Resin be have certain plastic, as long as suitable mould is arranged, the composite material that utilizes the plasticity of resin just this technical scheme can be mentioned is so made the product of Any shape, so, when producing car-bottom flow deflector of the present invention, only need utilize suitable mold cured to get final product, thereby the cost of car-bottom flow deflector is reduced, and use the die production baffle at bottom, can guarantee the dimensional accuracy of baffle at bottom of the present invention.In addition, resin also has excellent in chemical performance (for example flame resistance, withstanding corrosion, solvent resistance or the like), and these performances all will be given car-bottom flow deflector.
Certainly, if the natural fiber of selecting is inequality, so the performance that produced product had is also different, an important performance is exactly the intensity of car-bottom flow deflector, a target that produces based on this performance is under the prerequisite that guarantees the composite material lighter weight, guarantees that the intensity of composite material can reach a desirable level.
The selected natural fiber of the present invention is Zhu fiber crops, bluish dogbane, jute, in the sisal hemp two kinds, four kinds of alternative natural fibers all belong to crudefiber crop, and fiber crops are that fibre length is the longest in the various vegetable fibres, and the crystallinity of its fiber, the degree of orientation, longitudinal modulus of elasticity is all higher, compare with regenerated fiber that to have density low, degradable advantage, be suitable as the reinforcing material of natural-fiber composite material, shown in accompanying drawing 1-3, the present invention to these four kinds of same regenerated fibers of flaxen fiber (glass fibre) in bending strength, bending modulus, the interlaminar shear strength aspect contrasts, found that ramee has the most excellent mechanical property, jute and bastose secondly, the present invention finds that also the forming process of jute and bluish dogbane is best in addition.
The resin impregnated performance that another important performance is a natural fiber, the performance that improves this respect can make the better and even resin-bonded of natural fiber, thereby improves the bulk strength of composite material, and the present invention finds that jute has the best resin impregnability.
Based on the consideration of above several respects, the present invention further selects ramie and jute as the raw MAT'L of making in the car-bottom flow deflector composite material, has good mechanical intensity thereby be used in the composite material of making car-bottom flow deflector.On concrete raw-material proportioning, the present invention advises that the quality of natural fiber should account for the 30-40% of composite material total mass, such arrangement is how to have considered natural fiber with regard to the bonding properties decline (impregnability) of appearance and resin easily, and how worked as resin, the bulk strength of composite material will descend to some extent.
When technical personnel was selected ramie and jute as natural fiber, ramie can account for the 15-20% of composite material, and jute can account for the 15-20% of composite material, so that make the mechanical strength of composition fiber reach best.
For resin choice, can select any resin in principle, unsaturated polyester resin for example, epoxy resin or the like, but the present invention finds the selected epoxide modified vinylite of the present invention and compares unsaturated polyester resin and epoxy resin, mechanical property is better than unsaturated polyester resin, and shop characteristic is better than epoxy resin.
Be convenient to implement the present invention for technical personnel, the invention also discloses a kind of method of making car-bottom flow deflector, the car-bottom flow deflector of being mentioned is made by composite material of the present invention, and this method comprises
A, use surface treating agent that natural fiber is carried out surface treatment, described processing is that natural fiber is immersed in the surface treating agent 1-2 minute, takes out 70-80 ℃ of oven dry in back 4-5 hour, obtains first natural fiber and second natural fiber;
B, evenly smear demoulding wax on the car roof mould, polishing repeats to smear polishing operation 2-3 time subsequently;
C, first natural fiber and second natural fiber are carried out cutting, at mould upper berth first natural fiber after the b step process, again at the first natural fiber upper berth, second natural fiber, at last at the second natural fiber upper berth, first natural fiber;
D, at natural material upper berth release cloth, flow-guiding cloth, mozzle, the packing cloth completed, the shop is covered order and is release cloth, flow-guiding cloth, mozzle, packing cloth;
E, resin is allocated, with universal vinyl polyester, cobalt octoate, methyl ethyl ketone peroxide mixes, thereby makes epoxide modified vinylite of the present invention, wherein, cobalt octoate is an accelerator, methyl ethyl ketone peroxide is an initiating agent, and the addition of cobalt octoate is the 1-2% that universal vinyl polyester adds weight, and the addition of methyl ethyl ketone peroxide is the 1-2% that universal vinyl polyester adds weight;
F, car-bottom flow deflector mould sealing is vacuumized, and to car-bottom flow deflector die perfusion resin, when first natural fiber and second natural fiber soak into fully, stop perfusion resin, subsequently the resin in the car-bottom flow deflector mould is carried out normal temperature cure or 40-60 ℃ of curing;
G, the roof mould through the f step process is stopped to vacuumize, remove the mould sealing, take off release cloth, flow-guiding cloth, mozzle, packing cloth, obtain product.
Employed surface treating agent is a potassium permanganate solution, natural fiber through this surface treating agent processing, its interface shearing power has tangible raising with respect to untreated natural fiber, for when improving natural fiber interface shearing power, do not destroy the surface texture of fiber, the mass percent concentration of potassium permanganate solution is 0.055%-0.060%; On the other hand, surface treated fiber also increases to the durchgriff of resin, and the more not surface treated fiber of effect of impregnation may is better.
First natural fiber that this manufacture method is mentioned is a ramie, and second natural fiber is a jute, and these two kinds of natural fibers carry out lay according to the operation requirements of this manufacture method c step, to guarantee the natural fiber integral body permeability good to resin.
Reasonable vacuum all is useful for eliminating bubble in the product, improving speed, the control product thickness that resin soaks into fiber, thus vacuumizing of in the f step, mentioning of this manufacture method be with the vacuum degree control in the mould at-0.6Bar between-the 0.8Bar.
In addition, this manufacture method has been carried out the cutting corner of mould (especially) and lay to natural fiber, make that natural fiber and mould are more submissive, made car-bottom flow deflector corner bubble obviously reduces, shortened the work capacity that goods are repaired greatly, and this manufacture method is dried processing with products obtained therefrom after also being included in the g step, this is because the product that process g step obtains, also there is not complete curing, (gel and curing are two states in the moulding to be gel state, gel is that viscosity is very high, but a state of also touching with one's hand, curing are final states, and gel is before solidifying), described processing is product to be put into baking oven carry out back curing, and this has shortened the production cycle of product to a certain extent.
Description of drawings
Fig. 1 is the bending strength comparison diagram of sisal hemp, ramie, jute, bluish dogbane and glass fibre;
Fig. 2 is the bending strength modulus comparison diagram of sisal hemp, ramie, jute, bluish dogbane and glass fibre;
Fig. 3 is the interlaminar shear strength comparison diagram of sisal hemp, ramie, jute, bluish dogbane and glass fibre.
The specific embodiment
The present invention is described further below in conjunction with accompanying drawing:
Embodiment 1
A kind of car-bottom flow deflector, described car-bottom flow deflector is by ramie, the composite material that two kinds of natural fibers of jute and resin are formed is made, the mass percent that described natural fiber accounts for composite material is 35%, in order to guarantee the intensity of natural fiber, the ramie that present embodiment adopts and jute are the plain weave ramie cloths produced of Jiangxi well bamboo fiber crops industry Co., Ltd and the grand gunny cloth (promptly participating in the technical scheme of present embodiment with the form of cloth) that becomes the textile finishing Co., Ltd to produce in Zhejiang, wherein to account for the mass percent of whole composite material be 15% to the plain weave ramie cloth, is 20% and gunny cloth accounts for the mass percent of whole composite material.
Selected resin can be unsaturated polyester resin (UP), epoxy resin, poly-vinyl resin (PP), polylactic resin (PLA), but the present invention finds the selected epoxide modified vinylite of present embodiment and compares unsaturated polyester resin and epoxy resin, mechanical property is better than unsaturated polyester resin, and shop characteristic is better than epoxy resin.The epoxide modified vinylite of being mentioned can be by following feedstock production: universal vinyl polyester, cobalt octoate, methyl ethyl ketone peroxide.Wherein universal vinylite is provided by Lars company of section, cobalt octoate is an accelerator, methyl ethyl ketone peroxide is an initiating agent, and the addition of cobalt octoate is 1.5% of a universal vinyl polyester adding weight, and the addition of methyl ethyl ketone peroxide is 1.5% of a universal vinyl polyester adding weight.
The manufacture method of car-bottom flow deflector can be carried out according to following steps:
1, use surface treating agent that plain weave ramie cloth and gunny cloth are carried out surface treatment, described processing can be soaked plain weave ramie cloth and gunny cloth 2 minutes in surface treating agent, take out back 80 ℃ of oven dry 4 hours, the surface treating agent that uses is 0.058% potassium permanganate solution as mass percent concentration;
2, evenly smear demoulding wax on the car roof mould, polishing repeats to smear polishing operation 3 times after 5 minutes, and used demoulding wax is AXEL Paste Wiz (technical personnel can be bought from the market);
3, plain weave ramie cloth and the gunny cloth handled through potassium permanganate solution are carried out cutting, and at 2 layers of plain weave ramie cloth in mould upper berth of handling through the polishing waxing, again in the 2 layers of gunny cloth in plain weave ramie cloth upper berth, 2 layers of plain weave ramie cloth on the gunny cloth upper berth at last;
4, at natural material upper berth release cloth, flow-guiding cloth, mozzle, the packing cloth completed, the shop is covered order and is release cloth, flow-guiding cloth, mozzle, packing cloth;
5, resin is allocated, with universal vinyl polyester, cobalt octoate, methyl ethyl ketone peroxide mixes, thereby obtains epoxide modified vinylite;
6, the sealing of roof mould is vacuumized, degree of vacuum in the control mould is-0.7Bar, and to the epoxide modified vinylite of roof die perfusion, when plain weave ramie cloth and gunny cloth are soaked into fully, stop perfusion resin, owing to soak into the zone and do not soak into regional color distortion clearly, therefore technical personnel can be observed by naked eyes, and accurately when judgement stops perfusion resin, subsequently the resin in the roof mould is carried out normal temperature cure or 40-60 ℃ of curing, if technical personnel is selected normal temperature cure, cure time can be 4 hours, if technical personnel is selected 40-60 ℃ of curing, cure time can be 1 hour;
7, the roof mould through 6 step process is stopped to vacuumize, remove the mould sealing, take off release cloth, flow-guiding cloth, mozzle, packing cloth, obtain product.
In order to have shortened the production cycle of product to a certain extent, present embodiment is also put into product baking oven and is carried out back curing after 7 steps.
In order to guarantee the quality of car-bottom flow deflector, present embodiment can be by the following method carries out quality control to the car-bottom flow deflector of manufacturing.Choose some point measurement thickness on the car-bottom flow deflector, thickness should be consistent everywhere; Whether range estimation car-bottom flow deflector, particularly corner have bubble, if any bubble, should in time repair; Also can adopt nondestructiving detecting means such as hammering method, acoustical impedance method, ray detection technology, ultrasonic detecting technology, sound-ultrasonic technique to car-bottom flow deflector, carry out quality testing and control.
Strengthening thermoplastic base resin material car-bottom flow deflector with glass fibre compares: the car-bottom flow deflector physical property that present embodiment is made (intensity for example, rigidity etc.) car-bottom flow deflector with glass fibre enhancing thermoplastic base resin material is suitable, and the former quality only is 2/3 of latter's quality, meet current automobile weight-saving trend, and in range of temperatures widely, the car-bottom flow deflector that present embodiment is made all can keep its physical property, in addition, the described composite material of present embodiment is owing to used epoxide modified vinylite, and therefore the baffle at bottom of making also has excellent flame (the low density of being fuming), solvent resistance, withstanding corrosion, resistance to ag(e)ing.
Should be appreciated that those skilled in the art can make various changes or modifications the present invention after having read instruction foregoing of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (9)
1. car-bottom flow deflector is characterized in that the composite material that described car-bottom flow deflector is made up of any two kinds of natural fibers in sisal hemp, ramie, jute, the bluish dogbane and resin makes, and the mass percent that described natural fiber accounts for composite material is 30-40%; The manufacture method of described car-bottom flow deflector is:
A, use surface treating agent carry out surface treatment to natural fiber, obtain first natural fiber and second natural fiber;
B, evenly smear demoulding wax on the car-bottom flow deflector mould, polishing repeats to smear polishing operation 2-3 time subsequently;
C, first natural fiber and second natural fiber are carried out cutting, at mould upper berth first natural fiber after the b step process, again at the first natural fiber upper berth, second natural fiber, at last at the second natural fiber upper berth, first natural fiber;
D, at natural fiber upper berth release cloth, flow-guiding cloth, mozzle, the packing cloth completed, the shop is covered order and is release cloth, flow-guiding cloth, mozzle, packing cloth;
E, resin is allocated, with universal vinyl polyester, cobalt octoate, methyl ethyl ketone peroxide mixes, the addition of cobalt octoate is the 1-2% that universal vinyl polyester adds weight, and the addition of methyl ethyl ketone peroxide is the 1-2% that universal vinyl polyester adds weight;
F, car-bottom flow deflector mould sealing is vacuumized, and to car-bottom flow deflector die perfusion resin, when first natural fiber and second natural fiber soak into fully, stop perfusion resin, subsequently the resin in the car-bottom flow deflector mould is carried out normal temperature cure or 40-60 ℃ of curing;
G, the car-bottom flow deflector mould through the f step process is stopped to vacuumize, remove the mould sealing, take off release cloth, flow-guiding cloth, mozzle, packing cloth, obtain the car-bottom flow deflector blank.
2. a kind of car-bottom flow deflector according to claim 1 is characterized in that described natural fiber is ramie and jute, and the mass percent of described ramie accounts for the 15-20% of composite material, and the mass percent of described jute accounts for the 15-20% of composite material.
3. a kind of car-bottom flow deflector according to claim 1 and 2 is characterized in that described resin is epoxide modified vinylite.
4. the manufacture method of car-bottom flow deflector according to claim 1, it is characterized in that the surface treating agent in the described a step is that mass percent concentration is the potassium permanganate solution of 0.055%-0.060%, described processing is that natural fiber is immersed in the surface treating agent 1-2 minute, takes out 70-80 ℃ of oven dry in back 4-5 hour.
5. according to the manufacture method of claim 1 or 4 described car-bottom flow deflectors, it is characterized in that described first natural fiber is a ramie, second natural fiber is a jute.
6. according to the method for claim 1 or 4 described manufacturing car-bottom flow deflectors, it is characterized in that vacuumizing in the f step be with the vacuum degree control in the mould at-0.6Bar between-the 0.8Bar.
7. the method for manufacturing car-bottom flow deflector according to claim 5, it is characterized in that vacuumizing in the f step be with the vacuum degree control in the mould at-0.6Bar between-the 0.8Bar.
8. the method for manufacturing car-bottom flow deflector according to claim 5 is characterized in that after this method also is included in the g step gained car-bottom flow deflector blank being dried processing.
9. the method for manufacturing car-bottom flow deflector according to claim 6 is characterized in that after this method also is included in the g step gained car-bottom flow deflector blank being dried processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101953121A CN101659284B (en) | 2009-09-08 | 2009-09-08 | Car-bottom flow deflector and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101953121A CN101659284B (en) | 2009-09-08 | 2009-09-08 | Car-bottom flow deflector and manufacturing method |
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| CN101659284A CN101659284A (en) | 2010-03-03 |
| CN101659284B true CN101659284B (en) | 2011-05-18 |
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| CN2009101953121A Expired - Fee Related CN101659284B (en) | 2009-09-08 | 2009-09-08 | Car-bottom flow deflector and manufacturing method |
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| CN106381599A (en) * | 2016-08-30 | 2017-02-08 | 天津工业大学 | Pipeline repair tubular ramie/terylene weaving composite material |
| CN107057290A (en) * | 2017-05-05 | 2017-08-18 | 盐城工业职业技术学院 | Epoxy vingl ester resin composite and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828910A (en) * | 1987-12-16 | 1989-05-09 | Reinhold Haussling | Sound absorbing laminate |
| US4940629A (en) * | 1988-05-05 | 1990-07-10 | Basf Aktiengesellschaft | Fiber reinforced thermoplastic integral skin foams and manufacture thereof |
| US4978489A (en) * | 1986-07-31 | 1990-12-18 | The Wiggins Teape Group Limited | Process for the manufacture of a permeable sheet-like fibrous structure |
| CN1745212A (en) * | 2003-02-06 | 2006-03-08 | 宝洁公司 | Fibrous structure comprising cellulosic and synthetic fibers and method for making the same |
| CN101065526A (en) * | 2004-11-08 | 2007-10-31 | 阿兹代尔公司 | Composite thermoplastic sheets including natural fibers |
| CN101475027A (en) * | 2008-01-04 | 2009-07-08 | 上海耀华大中新材料有限公司 | Automobile bottom guide plate and method of producing the same |
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2009
- 2009-09-08 CN CN2009101953121A patent/CN101659284B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978489A (en) * | 1986-07-31 | 1990-12-18 | The Wiggins Teape Group Limited | Process for the manufacture of a permeable sheet-like fibrous structure |
| US4828910A (en) * | 1987-12-16 | 1989-05-09 | Reinhold Haussling | Sound absorbing laminate |
| US4940629A (en) * | 1988-05-05 | 1990-07-10 | Basf Aktiengesellschaft | Fiber reinforced thermoplastic integral skin foams and manufacture thereof |
| CN1745212A (en) * | 2003-02-06 | 2006-03-08 | 宝洁公司 | Fibrous structure comprising cellulosic and synthetic fibers and method for making the same |
| CN101065526A (en) * | 2004-11-08 | 2007-10-31 | 阿兹代尔公司 | Composite thermoplastic sheets including natural fibers |
| CN101475027A (en) * | 2008-01-04 | 2009-07-08 | 上海耀华大中新材料有限公司 | Automobile bottom guide plate and method of producing the same |
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| CN101659284A (en) | 2010-03-03 |
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