WO1995003164A1 - Porous tube of fiber-reinforced plastic and method of manufacturing the same - Google Patents
Porous tube of fiber-reinforced plastic and method of manufacturing the same Download PDFInfo
- Publication number
- WO1995003164A1 WO1995003164A1 PCT/JP1994/001194 JP9401194W WO9503164A1 WO 1995003164 A1 WO1995003164 A1 WO 1995003164A1 JP 9401194 W JP9401194 W JP 9401194W WO 9503164 A1 WO9503164 A1 WO 9503164A1
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- WIPO (PCT)
- Prior art keywords
- fiber
- sheet
- weight
- porous tube
- matrix resin
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/462—Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames
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- 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
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- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/40—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of definite length, i.e. discrete articles
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/562—Winding and joining, e.g. winding spirally spirally
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- 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
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- 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
- B29K2023/0658—PE, i.e. polyethylene characterised by its molecular weight
- B29K2023/0683—UHMWPE, i.e. ultra high molecular weight 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
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- 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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
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- 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
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- 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
- B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
-
- 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
- B29K2307/00—Use of elements other than metals as reinforcement
-
- 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
- B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
- B29K2309/08—Glass
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- 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
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1372—Randomly noninterengaged or randomly contacting fibers, filaments, particles, or flakes
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1376—Foam or porous material containing
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
Definitions
- the present invention relates to a plastic porous tube having a continuous air bubble in a tube wall, excellent mechanical strength, and excellent smooth outer and inner peripheral surfaces, and a method for producing the same.
- Perforated plastic pipes have the advantage that the presence of continuous pores in the pipe wall can reduce the amount of plastic material used and increase the pipe wall thickness to increase the pipe rigidity. It is used as a structural material.
- the porous tube obtained by the above method has a problem that the strength is low because the resin is only fused to the powder by point bonding on the surface.
- continuous porosity the porosity of continuous pores
- a heat-fusible conjugate fiber and no binder such as an adhesive
- a plastic porous tube formed in a pipe shape only with a fiber usually includes a heat-fusible conjugate fiber between cylinders of a molding frame in which an outer cylinder and an inner cylinder are concentrically combined. It is made by filling the tube, heating it, removing it from the mold after cooling.
- Japanese Patent Publication No. 56-43139 discloses a method in which a fiber aggregate layer having a fixed width containing the heat-fusible conjugate fiber is pressed by the weight of the rolled material.
- a method for producing a hollow cylindrical fiber molded body by winding around a core while reducing bulkiness and elasticity, cooling to a desired porosity, and extracting the core According to the method described here, a hollow cylinder can be made of any size as long as it is possible, and a small one with the same cross section and a long axial direction can be manufactured and cut later. This has the advantage that it can be produced efficiently and the porosity can be freely controlled in the range of 50 to 90% by volume.
- Power is generally a plastic porous tube formed of a fiber with low tensile elasticity into a pipe shape. Yes, the problems of low bulk density and low compressive strength have not been solved.
- an object of the present invention is to provide a fiber-reinforced plastic porous tube having high compressive strength and a large continuous porosity, and secondly, from a matrix resin and a reinforcing fiber.
- An object of the present invention is to provide a method for producing the above-mentioned porous fiber reinforced plastic tube using the obtained composite sheet.
- the present inventors have conducted intensive studies to solve such problems, and as a result, The present inventors have found that a plastic porous tube having continuous pores reinforced with fibers having a high porosity has high mechanical strength, and that the continuous porosity can be freely controlled by selecting manufacturing conditions, and has reached the present invention. .
- the first invention includes a matrix resin and a reinforcing fiber having an average fiber length of 1 to 5 Oram, and 5 to 500 parts by weight of the reinforcing fiber is added to 100 parts by weight of the matrix resin. It is intended to provide a fiber-reinforced plastic porous tube having continuous pores, characterized by being contained.
- the matrix resin comprises reinforcing fibers having an average fiber length of 1 to 50 mm, and contains 5 to 500 parts by weight of the reinforcing fibers with respect to 100 parts by weight of the matrix resin.
- the present invention is characterized in that the plastic porous tube has continuous pores and is characterized in that the average pore size on the surface of the plastic porous tube is 5 nm or less.
- a matrix resin composed of a reinforcing fiber having an average fiber length of 1 to 5 O mni, and a tensile modulus of reinforcing fibers 1 0 0 0 kg / mm 2 or more, the matrix resin 1 0 0 weight
- a porous fiber-reinforced plastic tube having continuous pores, characterized by containing 5 to 500 parts by weight of reinforcing fibers.
- the gist of the invention is to provide a method for producing the above-mentioned fiber-reinforced plastic multi-well tube comprising the following four steps.
- a matrix resin and 5 to 500 parts by weight of a reinforcing fiber having an average fiber length of 1 to 5 Omni per 100 parts by weight of the matrix resin are dispersed in water, composited and sheeted.
- the densified sheet is wound into one or more layers to form a tube.
- Matrix resin and 5 to 500 parts by weight of reinforcing fiber with an average fiber length of 1 to 50 parts by weight per 100 parts by weight of matrix resin are dispersed in water, composited to form a sheet.
- the porous tube of the present invention contains a reinforcing fiber and a matrix resin.
- a reinforcing fiber an organic or inorganic fiber is used, and preferably has a tensile modulus of not less than 1,000 kg / mm 2 , more preferably from 2,000 to 300,000.
- Pitch-based, PAN-based carbon fiber, glass fiber, para-based aramid fiber, alumina fiber or the like having a weight of kg / mm 2 can be used alone or in combination.
- the average fiber length of the reinforcing fibers needs to be 1 to 50, and preferably 3 to 25 mm.
- the average fiber diameter of the reinforcing fibers is preferably from 2 to 100 zm, and particularly preferably from 5 to 50 / m.
- thermofusible polymers that are either thermoplastic or thermoset resins.
- the heat-fusible polymer in the present invention desirably includes a hydrophobic water-insoluble addition polymer, and these polymers can be used in the form of a powder or a dispersion.
- Suitable heat-fusible organic polymers include addition polymers and condensation polymers, for example, polyolefin-based resins such as polyethylene, ultra-high molecular weight polyethylene, chlorinated polyethylene, polypropylene, polycarbonate, binary of ethylene and acrylic acid.
- Polymer polypropylene, nylon, phenylene oxide resin, phenylene sulfide resin, polyoxymethylene, polyester, terpolymer of acrylonitrile, butadiene, and styrene, polyvinyl chloride, major proportion of vinylidene chloride and small proportion And a binary polymer with at least one other, ⁇ -ethylene-unsaturated monomer which can be copolymerized therewith, and a homopolymer or copolymer of styrene, a phenol resin, and a polyimide resin.
- polyolefin resins such as polyethylene, ultrahigh molecular weight polyethylene, chlorinated polyethylene, and polypropylene, or phenol resins are preferred.
- the matrix resin in the present invention is preferably used in powder form
- the mixing ratio between the reinforcing fiber and the matrix resin in the present invention is 5 to 500 parts by weight of the reinforcing fiber to 100 parts by weight of the matrix resin. Is required, preferably from 10 to 300 parts by weight, particularly preferably from 20 to 200 parts by weight.
- the mixing ratio of the reinforcing fibers is less than 5 parts by weight with respect to 100 parts by weight of the matrix resin, thermal expansion becomes insufficient and it is difficult to secure continuous pores. If the amount exceeds 500 parts by weight, it is difficult to form the sheet into a cylindrical shape.
- the porous tube of the present invention has continuous pores.
- the porous tube has a large number of continuous pores in a tube wall sandwiched between an outer peripheral wall and an inner peripheral wall. Whether a cell has continuous pores can be determined by the following method.
- the porous tube of the present invention has a large ratio of continuous pores, and has a high continuous porosity of up to 90% by volume. This continuous porosity can be determined by the following method.
- the continuous porosity is It can be calculated from the following equation.
- porous tube of the present invention may have a true circular shape, an elliptical shape, an oval shape, or any other appropriate cross-sectional shape.
- the porous tube of the present invention is particularly useful as a cylindrical filter medium having an average pore diameter of 5 / m or less on the surface.
- the porous tube of the present invention can optionally contain various other components.
- 10 to 33% by weight of a filler can be blended.
- the filler for example, silicon dioxide (Novacite), CaC0 3, gO , Ca Si0 3 ( Worasutonai g) and mica.
- Pigments or dyes can also be added to impart opacity or color to the perforated tube.
- various chemical additives such as an antioxidant, an ultraviolet stabilizer, a foaming agent, an antifoaming agent, and a bactericide can be used.
- the porous tube of the present invention can be manufactured, for example, by the following method. First, 5 to 500 parts by weight of the reinforcing fiber is dispersed in water by 100 parts by weight of the matrix resin powder by the method described in U.S. Pat. Then, the sheet is pressed under heating, and then cooled to produce a densified sheet.
- the amount of the binder to be added is 0.1 to 100 parts by weight of the matrix resin.
- the content is preferably 1 to 5 parts by weight, particularly preferably 0.3 to 3 parts by weight.
- a binder include acrylyl containing a bound sulfonium group, sulfoxonium group, isophoronium group, pyridinium group, quaternary ammonium group, sulfate group, sulfonate group or carboxylate group.
- Polymer latexes consisting of polymers or substantially water-insoluble organic polymers with bound anionic or cationic charges, such as styrene butadiene polymers.
- Starch especially linear starch such as natural starch or constarch, and enzymatically or chemically modified starch including positive ion starch can also be used as a binder.
- an organic coagulant is used. It is also preferable to use such organic coagulants, such as aluminum 'polychloride (aluminum, hydroxycyclolide), partially hydrolyzed polyacrylamide, modified cationic polyacrylamide, and diaryl dimethyl ammonium chloride. Various organic flocculants, such as chloride.
- the amount of the coagulant to be added is preferably less than about 3 parts by weight, more preferably less than about 1 part by weight, based on 100 parts by weight of the matrix resin.
- the wet sheet that has been solid-liquid separated in the manner of a paper machine is dried, and one or more sheets are laminated and heated. Press and then cool press.
- the temperature at the time of hot pressing is preferably in a temperature range of 10 to 20 ° C. higher than the melting point of the matrix resin, and the pressure is 5 to: L 0 kg / cm 2 . Preferably, there is.
- the thickness is about 0.1 to 1 and the weight is 100 to: L0000g
- a dense sheet of about Zin 2 can be obtained.
- the continuous porosity of the sheet is preferably 30% by volume or less, more preferably 20% by weight or less, and particularly preferably 10% by volume or less.
- the sheet is wound into one or more layers, preferably 2 to 10 layers to form a tube, and the tube-shaped sheet is inserted into a mold.
- the mold at this time is preferably a metal or carbon mold from the viewpoint of thermal conductivity.
- the mold is placed in a heat oven set at a temperature not lower than the melting point of the matrix resin, preferably 10 to 50 ° C higher than the melting point, and held for 10 to 300 minutes for strengthening. Due to the action of the fibers, thermal expansion occurs. Thereafter, the mold is taken out of the oven, and after cooling, the mold is removed, whereby the porous tube of the present invention can be obtained.
- the above-described composite sheet and a microporous film having an average pore diameter of 5 m or less are laminated. After winding the sheet one or more times, the sheet is inserted into a mold, and then the mold into which the tubular sheet is inserted is heated in the same manner as described above to obtain a desired fiber-reinforced plastic porous sheet. You can get a tube.
- the tubular sheet when laminating a microporous film having an average pore diameter of 5 / m or less on the outermost layer of the tubular sheet, if the tubular sheet is wound once, the microporous film is laminated. If the tubular sheet has two or more turns, use a densified sheet in which the part corresponding to the last turn of the densified sheet is laminated with a microporous film. Or a portion corresponding to one turn of the tubular sheet may be covered with a densified sheet laminated with a microporous film.
- the microporous film may be laminated on a nonwoven fabric and coated on the surface of the tubular sheet by one or more turns.
- the microporous film used here has an average pore diameter of 5 or less. Any of these may be used, but a microporous film of a polyolefin-based resin having a thickness of 50 to 150 zm, which is easily available as a commercial product, is preferred.
- a microporous film of polypropylene, polypropylene copolymer, or ultra-high-molecular-weight polyethylene is used from the viewpoint of heat-fusibility.
- a microporous film of polypropylene or polypropylene copolymer is used.
- the heating temperature for laminating the microporous film on the densified sheet is a temperature at least 5 C higher than the melting point of the polyolefin resin used as the matrix resin, and the melting point of the microporous film used. Less than Any temperature may be used as long as the temperature is below, but it is usually preferable that the temperature is 5 to 50 ° C higher than the melting point of the polyolefin resin as the matrix resin, and the pressure is 5 to 10 Okg / cm. It is preferably 2 .
- the thickness of the plastic porous tube of the present invention is 1 to 20 Omm, preferably 2 to 2 Omm.
- the porous tube of the present invention thus obtained has a high separation function since the average pore diameter on the surface is 5 m or less, and is particularly suitable for use as a cylindrical filter medium (filter).
- a cylindrical filter medium filter
- xanthan rubber 0.25 g was added while stirring in 17.5 liters of water, and then glass fibers having an average fiber length of 6 mni (Owens Co., Ltd., fiberglass, 415BB) were used as reinforcing fibers. 67 g was added to the water and stirred for 5 minutes to disperse the glass fibers.
- This slurry was added to a sheet machine (manufactured by Kumagaya Riki Kogyo Co., Ltd.) containing 17.5 liters of water, and dehydrated on a 0.18 screen to obtain a wet sheet.
- the resulting sheet was lightly compressed and dried at 110 ° C. to remove residual water, thereby obtaining a glass fiber-reinforced polyethylene sheet having a basis weight of 325 gZm 3 .
- the glass fiber was 67 parts by weight based on 100 parts by weight of the polyethylene.
- a glass fiber reinforced high density polyethylene compressed sheet having a basis weight (sheet weight / ⁇ 2 ) of 150 g / m 2 filled with 50% by weight of glass fiber having an average fiber length of 3 was prepared. Obtained.
- the two sheets were heated and laminated in the same manner as above to produce a 0.25 compressed sheet B, which was used as sample B. When this sheet B was heated in an infrared oven at 175 ° C for about 90 seconds, complete thermal expansion was observed, and the thermally expanded sheet had an apparent density of 0.36 g / cc.
- the glass fiber reinforced polyethylene sheets A and B obtained above are wound four times along the outer peripheral surface of a stainless steel cylinder having an outer diameter of 40, and B is wound six times along a stainless steel cylinder having an inner diameter of 50 mm. Inserted inside.
- Table 1 shows the characteristics of the porous tubes a and b.
- Samples C and D were made of polypropylene (manufactured by Mitsui Toatsu Co., Ltd.) as the matrix resin. Glass fibers with an average fiber length of 6.4 mra and 3.2 min, respectively, were about 40% by weight Contained.
- samples E and F a phenol resin (manufactured by Unitika) was used as a matrix resin, and carbon fibers having an average fiber length of 6.4 hidden and 3.2 mm, respectively (manufactured by Toho Rayon Co., Ltd.) were approximately 40% by weight.
- phenol resin manufactured by Unitika
- the fiber reinforced sheets C to F obtained as described above were wound 7 times along the outer peripheral surface of a stainless steel cylinder having an outer diameter of 100 mm in the same manner as in Example 1, and this was wound into an inner diameter of 10 mm. 5 Inserted inside a stainless steel cylindrical mold. Next, this was left in a hot-air circulation oven heated to 200 ° C for 40 minutes, and then cooled to room temperature.
- Table 1 shows the characteristics of the porous tubes c to f.
- Example 2 In the same manner as in Example 1, one sheet having a basis weight of 200 g Zm 2 was pressed to produce a compressed sheet having a thickness of 0.19 mm.
- Sample G used polyethylene (manufactured by Sumitomo Chemical Co., Ltd.) as a matrix resin, and contained 40% by weight of alumina fiber (manufactured by Nichias Corporation) having an average fiber length of 3 mm.
- the fiber reinforced sheet G obtained as described above was wound eight times along the outer peripheral surface of a stainless steel cylinder having an outer diameter of 40 in the same manner as in Example 1, and was wound into a stainless steel cylinder having an inner diameter of 50. It was inserted inside the mold. Next, the tube was left in a hot-air circulation oven heated to 180 ° C for 20 minutes, and then cooled to room temperature.
- Example 2 In the same manner as in Example 1, one sheet having a basis weight of 200 g Zm 2 was pressed to produce a compressed sheet having a thickness of 0.19 mm.
- Sample H used a phenol resin (manufactured by Unitika) as a matrix resin and contained 40% by weight of para-aramid fiber (manufactured by DuPont-Toray) having an average fiber length of 4 mm.
- the fiber-reinforced sheet H obtained as described above was wound 7 times along the outer peripheral surface of a stainless steel cylinder having an outer diameter of 40 in the same manner as in Example 1, and this was wound with an inner diameter of 50 band. It was inserted inside a stainless steel cylindrical mold. Next, this was left for 40 minutes in a hot-air circulation oven heated to 200 ° C., and then cooled to room temperature.
- Table 1 shows the characteristics of the porous tube h.
- One sheet having a basis weight of 300 g Zm 2 was pressed to obtain a compressed sheet having a thickness of 0.25 mra in the same manner as in Example 1 and then 160 mm from the end thereof.
- a compressed sheet was manufactured by laminating a portion of a polypropylene microporous film [manufactured by Tokuyama Soda Co., Ltd.] having an average pore diameter of 1 / zm and a thickness of 0.1 mm. did.
- Sample I used polyethylene (manufactured by Sumitomo Chemical Co., Ltd.) as a matrix resin, and contained 50% by weight of glass fiber (average fiber length: 3 mm, manufactured by Corning Fiberglass, Inc.).
- the fiber reinforced sheet I obtained as described above was appropriately cut, and In the same manner as described above, the microporous film is wound six times along the outer peripheral surface of a stainless steel cylinder with an outer diameter of 40 mm so as to be the outermost layer, and then a stainless steel cylindrical mold with an inner diameter of 50 hidden. Inserted inside. Next, this was left in a hot-air circulation oven heated to 160 ° C. for 30 minutes, and then cooled to room temperature.
- Table 1 shows the characteristics of the porous tube i.
- the sample (perforated tube) was cut into 1 O CDI lengths, and a load was applied from above and below, and the compressive strength was measured by the load when the tube was broken. Note that the compressive strength in Table 1 is a value converted to a length of 1 m.
- the measurement was performed using a mercury porosimeter micromeritix 930 manufactured by Shimadzu Corporation.
- the fiber-reinforced plastic porous tube of the present invention obtained in the examples has continuous pores and high strength despite having a high continuous porosity. I understand.
- a cylindrical porous tube was manufactured using this sheet in the same manner as in Example 1. However, when the filling amount of the glass fiber was 95% by weight, the sheet was insufficiently flexible, and the stainless steel cylinder was not used. The sheet could not be wound along the outer peripheral surface of, and a cylindrical porous tube could not be obtained.
- Table 1 shows the characteristics of a commercially available product A (Pearlcon, manufactured by Daicel Chemical Industries, Ltd., perforated plastic tube formed by sintering polypropylene resin powder).
- the perforated pipe of the present invention has continuous pores in the pipe wall, has excellent mechanical strength, and has smooth outer and inner peripheral surfaces.
- various filter materials can be used in fields such as air diffusers, drain pipes, etc.
- the above-described porous tube can be obtained by freely controlling the continuous porosity.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69422154T DE69422154T2 (de) | 1993-07-21 | 1994-07-20 | Poröses rohr aus faserverstärktem kunststoff und verfahren zu dessen herstellung |
US08/403,897 US5721031A (en) | 1993-07-21 | 1994-07-20 | Fiber-reinforced porous plastic tube |
EP94921791A EP0673753B1 (en) | 1993-07-21 | 1994-07-20 | Porous tube of fiber-reinforced plastic and methods of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20185493 | 1993-07-21 | ||
JP5/201854 | 1993-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995003164A1 true WO1995003164A1 (en) | 1995-02-02 |
Family
ID=16447991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/001194 WO1995003164A1 (en) | 1993-07-21 | 1994-07-20 | Porous tube of fiber-reinforced plastic and method of manufacturing the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US5721031A (ja) |
EP (1) | EP0673753B1 (ja) |
CN (1) | CN1113650A (ja) |
DE (1) | DE69422154T2 (ja) |
WO (1) | WO1995003164A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019513555A (ja) * | 2016-04-11 | 2019-05-30 | スペクトラム インコーポレイテッドSpectrum,Inc. | 厚壁の中空繊維タンジェンシャルフローフィルタ |
Families Citing this family (18)
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DE19700760C2 (de) | 1997-01-11 | 2000-11-09 | Microdyn Modulbau Gmbh & Co Kg | Verfahren zur Herstellung von porösen Formkörpern aus thermoplastischen Polymeren, poröse Formkörper und Verwendung der Formkörper |
US6537614B1 (en) | 1998-12-18 | 2003-03-25 | Kimberly-Clark Worldwide, Inc. | Cationically charged coating on hydrophobic polymer fibers with poly (vinyl alcohol) assist |
TW480246B (en) * | 1998-12-18 | 2002-03-21 | Kimberly Clark Co | Cationically charged coating on glass fibers and method for making the same |
US6274041B1 (en) | 1998-12-18 | 2001-08-14 | Kimberly-Clark Worldwide, Inc. | Integrated filter combining physical adsorption and electrokinetic adsorption |
US20050145749A1 (en) * | 2003-09-03 | 2005-07-07 | Ridgeway Lawrence M.Jr. | Packaging spool and process for producing same |
US6341745B1 (en) * | 1999-08-26 | 2002-01-29 | American Spool & Packaging, Inc. | Packaging spool and process for producing same |
US20080217464A1 (en) * | 1999-08-26 | 2008-09-11 | Ridgeway Lawrence M | Packaging devices and methods of producing same |
US7048226B2 (en) | 1999-08-26 | 2006-05-23 | American Spool And Packaging, Inc. | Packaging reel and method |
US6645388B2 (en) | 1999-12-22 | 2003-11-11 | Kimberly-Clark Corporation | Leukocyte depletion filter media, filter produced therefrom, method of making same and method of using same |
US20070104934A1 (en) * | 2005-11-10 | 2007-05-10 | General Electric Company | Lightweight nacelle for turbines and methods for making same |
KR100904194B1 (ko) * | 2007-09-05 | 2009-06-22 | 주식회사 세운티.엔.에스 | 단열파이프 제조장치 |
US10711238B2 (en) | 2012-10-02 | 2020-07-14 | Repligen Corporation | Method for proliferation of cells within a bioreactor using a disposable pumphead and filter assembly |
JP6507203B2 (ja) * | 2017-07-13 | 2019-04-24 | フドー株式会社 | 成形品の製造方法および製造装置 |
CN111164133B (zh) * | 2017-09-29 | 2022-10-14 | 株式会社可乐丽 | 透液构件 |
CN108704383A (zh) * | 2018-05-22 | 2018-10-26 | 埃柯赛环境科技(贵州)股份有限公司 | 一种聚乙烯隔膜滤板及其制备方法 |
WO2021106649A1 (ja) * | 2019-11-29 | 2021-06-03 | 東レ株式会社 | 繊維強化複合材料およびサンドイッチ構造体 |
EP4067033A4 (en) * | 2019-11-29 | 2023-12-20 | Toray Industries, Inc. | FIBER-REINFORCED COMPOSITE MATERIAL AND SANDWICH STRUCTURE |
CN115232412A (zh) * | 2022-07-12 | 2022-10-25 | 刘现海 | 一种市政建筑用复合顶拉管及制备方法 |
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JPH048964Y2 (ja) * | 1987-03-30 | 1992-03-06 | ||
JPH0510491A (ja) * | 1991-07-04 | 1993-01-19 | Kawasaki Steel Corp | 管端ねじ保護具の製造方法 |
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US3767054A (en) * | 1970-06-15 | 1973-10-23 | W R Balston Ltd | A filter tube containing a self-sealing filter tube |
GB1485586A (en) * | 1976-01-13 | 1977-09-14 | Rolls Royce | Method of manufacturing composite material |
FR2396231A1 (fr) * | 1977-06-27 | 1979-01-26 | Kleber Colombes | Tuyau a paroi poreuse, notamment pour l'irrigation |
JPS5520615A (en) * | 1978-07-28 | 1980-02-14 | Kanegafuchi Chem Ind Co Ltd | Separator with tubular membrane |
US4376675A (en) * | 1979-05-24 | 1983-03-15 | Whatman Reeve Angel Limited | Method of manufacturing an inorganic fiber filter tube and product |
US4523995A (en) * | 1981-10-19 | 1985-06-18 | Pall Corporation | Charge-modified microfiber filter sheets |
US4973382A (en) * | 1988-07-26 | 1990-11-27 | International Paper Company | Filtration fabric produced by wet laid process |
JPH04122631A (ja) * | 1990-09-13 | 1992-04-23 | Petoca:Kk | 炭素繊維強化プラスチックの管状物及びその製造方法 |
FR2671735B1 (fr) * | 1991-01-18 | 1994-04-08 | Pechiney Recherche | Procede de fabrication de tubes poreux, de permeabilite elevee, en materiau composite carbone-carbone et leurs applications. |
US5529844A (en) * | 1994-04-29 | 1996-06-25 | Pall Corporation | Aramid fiber filtration sheet |
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- 1994-07-20 CN CN94190624A patent/CN1113650A/zh active Pending
- 1994-07-20 EP EP94921791A patent/EP0673753B1/en not_active Expired - Lifetime
- 1994-07-20 DE DE69422154T patent/DE69422154T2/de not_active Expired - Fee Related
- 1994-07-20 WO PCT/JP1994/001194 patent/WO1995003164A1/ja active IP Right Grant
- 1994-07-20 US US08/403,897 patent/US5721031A/en not_active Expired - Fee Related
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JPS62255127A (ja) * | 1986-04-28 | 1987-11-06 | Nitto Electric Ind Co Ltd | 樹脂処理繊維質管の製造方法 |
JPH048964Y2 (ja) * | 1987-03-30 | 1992-03-06 | ||
JPH0510491A (ja) * | 1991-07-04 | 1993-01-19 | Kawasaki Steel Corp | 管端ねじ保護具の製造方法 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019513555A (ja) * | 2016-04-11 | 2019-05-30 | スペクトラム インコーポレイテッドSpectrum,Inc. | 厚壁の中空繊維タンジェンシャルフローフィルタ |
Also Published As
Publication number | Publication date |
---|---|
DE69422154D1 (de) | 2000-01-20 |
CN1113650A (zh) | 1995-12-20 |
EP0673753A1 (en) | 1995-09-27 |
EP0673753B1 (en) | 1999-12-15 |
EP0673753A4 (en) | 1996-03-20 |
DE69422154T2 (de) | 2000-06-29 |
US5721031A (en) | 1998-02-24 |
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