WO2006059526A1 - Article formé de plastique renforcé de fibre de bambou et procédé de fabrication idoine - Google Patents

Article formé de plastique renforcé de fibre de bambou et procédé de fabrication idoine Download PDF

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Publication number
WO2006059526A1
WO2006059526A1 PCT/JP2005/021546 JP2005021546W WO2006059526A1 WO 2006059526 A1 WO2006059526 A1 WO 2006059526A1 JP 2005021546 W JP2005021546 W JP 2005021546W WO 2006059526 A1 WO2006059526 A1 WO 2006059526A1
Authority
WO
WIPO (PCT)
Prior art keywords
bamboo
fiber
reinforced plastic
fibers
bamboo fiber
Prior art date
Application number
PCT/JP2005/021546
Other languages
English (en)
Japanese (ja)
Inventor
Hideyuki Suzuki
Original Assignee
Nichimen Chemical Industry Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2004346555A external-priority patent/JP2006150819A/ja
Priority claimed from JP2004371230A external-priority patent/JP2006176642A/ja
Application filed by Nichimen Chemical Industry Co., Ltd. filed Critical Nichimen Chemical Industry Co., Ltd.
Publication of WO2006059526A1 publication Critical patent/WO2006059526A1/fr

Links

Classifications

    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of 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
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3044—Bumpers

Definitions

  • the present invention relates to a plastic molded product reinforced with bamboo cocoon fibers and a method for producing the same.
  • bamboo cocoon fibers are mixed with thermoplastic resin to produce pellets, and then these pellets are used for injection molding to produce products (bamboo fiber reinforced plastic molded products).
  • bamboo cocoon fibers are 1.5 times stronger than reinforcing bars. Therefore, by mixing bamboo cocoon fiber, the strength of the plastic can be improved, and it can be manufactured at a lower cost than plastics mixed with glass fiber or carbon fiber. In addition, when bamboo fiber is mixed in a large amount, the waste product can be incinerated and there are few harmful gases.
  • bamboo short fibers can be used, and the refinement process of bamboo fibers to obtain the short fibers is complicated.
  • the specific gravity of bamboo fiber is smaller than that of rosin, the bamboo fiber floats up in the molten rosin and when it is commercialized, bamboo cocoon fibers appear on the surface of the molded product, resulting in non-uniformity.
  • the touch is rough and smooth and the appearance is poor.
  • An object of the present invention is to provide a bamboo fiber reinforced plastic molded article that eliminates the above-mentioned drawbacks, has excellent mechanical properties such as bending strength, tensile strength, and impact strength, and has a good appearance.
  • the present inventor has conducted extensive research and found that the bamboo cocoon fiber has When molding and curing with thermosetting resin in the same direction, the mechanical properties such as bending strength of the finished bamboo fiber reinforced plastic are greatly improved.
  • the present inventors have found that the surface of the bamboo fiber sheet covered with a thermoplastic resin is placed in a mold and then compression-molded and then the surface becomes smooth and good in appearance, leading to the present invention.
  • the bamboo fiber reinforced plastic molded product of claim 1 is molded and cured by placing bamboo cocoon fibers in a thermosetting resin in a state where they are aligned in the length direction.
  • the bamboo fiber reinforced plastic molded product according to claim 2 is molded and cured by placing the bamboo cocoon fibers in the thermosetting resin in a state of being bundled in the length direction.
  • the bamboo fiber reinforced plastic molded product of claim 3 is molded and cured by placing the tie-like bamboo fibers obtained by twisting bamboo cocoon fibers into a tie-like shape in a thermosetting resin in the state of being aligned in the length direction.
  • the bamboo fiber reinforced plastic molded article according to claim 4 is made by aligning a bamboo-shaped bamboo fiber obtained by twisting bamboo cocoon fibers and a Z- or bamboo cocoon fiber in the length direction.
  • At least one of the fibers of the bamboo cocoon fiber, glass fiber, and carbon fiber fiber is placed in a thermosetting resin in a state in which the directions are not aligned, and is molded and cured.
  • the bamboo fiber reinforced plastic molded product according to claim 5 is compression-molded with a bamboo fiber sheet sandwiched between thermoplastic resin layers.
  • the bamboo fiber reinforced plastic molded product according to claim 6 is formed by alternately laminating a thermoplastic resin layer and a plurality of bamboo fiber sheets, and compression molding.
  • the manufacturing method according to claim 7 is a method of placing a bamboo-like bamboo fiber obtained by twisting bamboo cocoon fibers and a fiber of Z or bamboo cocoon in a mold in a state of being aligned in the length direction,
  • thermosetting resin is put into the mold, and then compression heating molding is performed.
  • the manufacturing method of claim 8 comprises impregnating a thermosetting resin in a state in which the tie-like bamboo fibers obtained by twisting bamboo cocoon fibers and Z or bamboo cocoon fibers are aligned in the length direction. After that, it is put into a mold and subjected to compression heating molding.
  • the manufacturing method according to claim 9 is a method in which a thermosetting resin is applied in a state in which the tie-like bamboo fibers obtained by twisting the bamboo cocoon fibers and the Z or bamboo cocoon fibers are aligned in the length direction. Then gold It is characterized by being put in a mold and subjected to compression heating molding.
  • the manufacturing method according to claim 10 is the manufacturing method according to claim 8 or 9, wherein a thermosetting resin impregnated or coated is placed in a mold, and further, the thermosetting resin in the mold. It is characterized by putting
  • a bamboo fiber sheet made of bamboo cocoon fiber is sandwiched between thermoplastic resin layers, and the surface is covered with a thermoplastic resin layer and placed in a mold, and then compression molded. It is characterized by this.
  • the manufacturing method according to claim 12 is a method in which a thermoplastic fiber layer and bamboo fiber sheets made of a plurality of bamboo cocoon fibers are alternately laminated, and the surface is covered with a thermoplastic resin layer and placed in a mold. It is characterized by compression molding.
  • the manufacturing method of claim 13 is characterized in that a thermoplastic resin layer is layered on a bamboo fiber sheet made of bamboo cocoon fibers, and the bamboo fiber sheet is exposed on one side and placed in a mold, followed by compression molding.
  • a plurality of bamboo fiber sheets are sequentially stacked on a bamboo fiber sheet made of bamboo cocoon fibers via a thermoplastic resin layer, and the bamboo fiber sheet is exposed on one side. It is characterized by being put into a mold and compression molded.
  • the bamboo cocoon fiber used in the manufacturing method of any one of claims 7 to 14 is boiled in a high-pressure kettle, and bamboo hemicellulose and ligne are obtained. It is characterized by fibrillation and fiberization after disassembly.
  • thermosetting resin and the thermoplastic resin are appropriately selected according to the purpose of use of the molded product, which may be any known one.
  • the use of biodegradable plastic is preferable because it reduces the environmental burden.
  • the bamboo fiber reinforced plastic molded product of the present invention is a plastic reinforced with glass fiber or carbon fiber, which has a bending strength improved by about 2 to 5 times compared to that of a bamboo shoot, mixed with bamboo cocoon fiber. Not inferior to molded products.
  • bamboo cocoon fibers used are cheaper than glass fibers and carbon fibers, and fiber-reinforced plastics can be manufactured at low cost. Also, glass fiber has a low environmental impact And has advantages over carbon fiber.
  • bamboo cocoon fibers when twisted in a tied shape, they can be placed side by side in a mold or immediately cut to a desired length for use. .
  • the molded article has a smooth surface and a good appearance.
  • the bamboo cocoon fiber used in the present invention is manufactured as follows. Cut bamboo, such as bamboo and bamboo shoots, and cut the leaves after dropping the leaves into several centimeters to 2 meters to make bamboo.
  • the bamboo material is put in a high-pressure kettle together with water or hot water, and when the temperature of the water or hot water is raised, the pressure in the kettle is raised and the bamboo material is boiled under high temperature and high pressure. At this time, the pressure in the kettle may be increased at the same time as the temperature of the water or hot water is raised after the pressure is appropriately reduced and water or hot water is added. Thereafter, the bamboo material is taken out from the high-pressure kettle, and is defibrated using a defibrating machine to form fibers.
  • the bamboo cocoon fiber produced is cut to a desired length, and the direction is aligned and placed in a mold.
  • the bamboo bamboo fibers produced are cut into a desired length and bundled into a mold.
  • thermosetting resin is put into the mold.
  • thermosetting rosin may be in the form of powder, granule, or liquid, and the input includes both adding powder or granule and pouring liquid. To do.
  • thermosetting resin may be any of known resins such as phenol resin, epoxy resin, unsaturated polyester resin, urea resin, melamine resin, and urea resin.
  • bamboo fiber reinforced plastic having a desired shape such as a plate material is obtained by compression heating molding.
  • bamboo cocoon fiber is preferably 10-75% by weight in bamboo fiber reinforced plastic, but if it is 1-90% by weight, it is 10-75% by weight. Although it is somewhat inferior, the mechanical properties such as bending strength can be improved.
  • the obtained bamboo fiber reinforced plastic is mixed with bamboo fiber.
  • the bamboo fiber reinforced plastic is slightly different depending on the mixing ratio of bamboo fiber, but in the direction perpendicular to the length direction of the mixed bamboo fiber. Bending strength is improved about 2 to 5 times.
  • the bamboo cocoon fiber manufacturing method is the same, but the subsequent manufacturing method is different.
  • a plurality of bamboo cocoon fibers produced are twisted together to form a tie, and the tie-like bamboo fibers are cut to an appropriate length and aligned in a mold.
  • bamboo cocoon fibers that are not bound are put into the mold without aligning the direction, and thermosetting resin is put into the mold.
  • bamboo fiber reinforced plastic of a desired shape is obtained by compression thermoforming.
  • the manufacturing method of the bamboo cocoon fiber is the same, but the subsequent manufacturing method is different.
  • bamboo cocoon fiber is twisted as it is or by twisting a plurality of fibers, impregnated or coated with thermosetting resin in the lengthwise direction, and then placed in the mold. Thereafter, a thermosetting resin is appropriately put into the mold, and a bamboo fiber reinforced plastic having a desired shape is obtained by compression thermoforming.
  • bamboo cocoon fibers are woven and knitted in the same way as other fiber woven fabrics to produce bamboo fiber sheets.
  • a bamboo fiber sheet is produced by forming the fleece in the same manner as other non-woven fabrics and then bonding the fibers together.
  • the woven bamboo fiber sheet is usually plain weave because it emphasizes strength over appearance and is easy to manufacture. However, this may be knitted with other known weaving methods. It is not something.
  • the bamboo fiber sheet is sandwiched between thermoplastic resin layers, placed in a mold, and compression molded (pressurized to 500-2 OOOkgZcm 2 ) to integrate the whole.
  • thermoplastic resin layer When the thermoplastic resin layer is heated to about 100 to 280 ° C., the thermoplastic resin layer and the bamboo fiber sheet can be integrated by compression molding without modification of the bamboo fiber.
  • thermoplastic resin layer is a general term for what covers the surface of a bamboo fiber sheet, and it may be a deviation of a plate, powder or pellet! / !.
  • the obtained bamboo fiber reinforced plastic molded article is coated with a thermoplastic resin layer around the bamboo fiber sheet and has a smooth surface and a good appearance.
  • bending strength, tensile strength, and impact strength are improved compared to molded products made of thermoplastic resin having the same thickness.
  • thermoplastic resin layers and multiple bamboo fiber sheets are alternately laminated, the bending strength, tensile strength, and impact strength are even higher than those with only one bamboo fiber sheet sandwiched between thermoplastic resin layers. improves.
  • the difference from the fourth embodiment is that only one surface of the bamboo fiber sheet is coated with thermoplastic resin.
  • thermoplastic resin layer is stacked on a bamboo fiber sheet, and the bamboo fiber sheet is exposed on one side and placed in a mold and compression molded. If necessary, the process of stacking bamboo fiber sheets and adding thermoplastic resin onto them may be repeated one or more times.
  • the bamboo fiber sheet is simply overlaid on the thermoplastic resin layer, but bamboo coated with noinda bamboo fiber sheets can be produced using fibers, positioned on a thermoplastic resin board, and then compression molded.
  • thermoplastic resin layers in the case where there are a plurality of thermoplastic resin layers, it is more necessary to use the same material for all of the resins used, and the strength of the joined parts becomes stronger because the finished molded product is integrated. Depending on the material, different materials may be used.
  • thermoplastic resin layer used in each embodiment may be a composite material such as fiber reinforced plastic reinforced with glass fiber or carbon fiber.
  • bamboo cocoon fiber when manufacturing the bamboo fiber sheet, glass fiber, carbon fiber, or other materials may be used as the bamboo cocoon fiber.
  • Various inorganic materials and organic materials may be added as appropriate to improve mechanical properties such as friction (sliding) properties and wear properties.
  • the bamboo cocoon fiber used when the bamboo fiber sheet is manufactured in each of the above embodiments is either a thread-like one, a bundle of yarn-like ones, or a yarn-like one knitted into a tied shape. Also good.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L’invention concerne un produit constitué de plastique renforcé de fibre de bambou que l’on obtient grâce à un procédé consistant à disposer des fibres de bambou en forme de lobe en torsadant des fibres à partir d’un menu de bambou en forme de lobe et/ou de fibres à partir d’un menu de bambou dans un moule pour les aligner dans le sens de la longueur, en chargeant une résine thermodurcissable dans ledit moule, avant moulage par compression ou équivalent, ou un procédé consistant à mettre une feuille de fibre de bambou comprenant des fibres à partir d’un menu de bambou entre des couches de résine thermoplastique, à mettre le produit résultant dans un moule pour recouvrir la surface des fibres par la résine thermoplastique, avant moulage par compression ou équivalent. Le produit ci-dessus constitué de plastique renforcé de fibre de bambou possède d’excellentes caractéristiques mécaniques comme la résistance à la flexion, la résistance à la traction et la résistance aux impacts.
PCT/JP2005/021546 2004-11-30 2005-11-24 Article formé de plastique renforcé de fibre de bambou et procédé de fabrication idoine WO2006059526A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004-346555 2004-11-30
JP2004346555A JP2006150819A (ja) 2004-11-30 2004-11-30 竹繊維強化プラスチック及びその製造方法
JP2004-371230 2004-12-22
JP2004371230A JP2006176642A (ja) 2004-12-22 2004-12-22 竹繊維強化プラスチック成形品の製造方法

Publications (1)

Publication Number Publication Date
WO2006059526A1 true WO2006059526A1 (fr) 2006-06-08

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WO (1) WO2006059526A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006226229A (ja) * 2005-02-18 2006-08-31 Yamato Giken Kk 車両用合成樹脂製筐体とその製造方法
CN102294714A (zh) * 2011-08-30 2011-12-28 安庆市永林竹塑板制造有限公司 一种复合竹塑板
CN109054285A (zh) * 2018-06-26 2018-12-21 桂林电子科技大学 一种竹纤维与竹丝协同提高抗弯强度的pom复合材料及其制备方法
CN110144648A (zh) * 2019-05-14 2019-08-20 张毅 竹纤维增强复合绳线的生产工艺

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06344361A (ja) * 1993-06-07 1994-12-20 Ask:Kk 大型形状の樹脂成形体の製造方法
JPH11138515A (ja) * 1997-11-12 1999-05-25 Hideto Hashimoto 竹繊維シートおよび竹繊維シート成形物
JP2000160034A (ja) * 1998-11-25 2000-06-13 Nippon Shokubai Co Ltd 生分解性複合材料
JP2002068815A (ja) * 2000-08-31 2002-03-08 Nichiha Corp 木質セメント板およびその製造方法
JP2002127114A (ja) * 2000-10-26 2002-05-08 Nichiha Corp 繊維成形板および繊維成形板の製造方法
JP2002146219A (ja) * 2000-11-07 2002-05-22 Hitoshi Takagi 生分解性複合材料及びその作製方法
JP2002309007A (ja) * 2001-04-10 2002-10-23 Mitsubishi Rayon Co Ltd 繊維強化熱可塑性樹脂成形物およびその製造方法
JP2003039462A (ja) * 2001-07-26 2003-02-13 Hiroshi Mitsuboshi 植物性繊維を用いた成形物製造法
JP2003039407A (ja) * 2001-08-03 2003-02-13 Takekkusu:Kk 竹製合板及び化粧板
JP2003049001A (ja) * 2001-08-02 2003-02-21 Hitachi Chem Co Ltd シートモールディングコンパウンド及びそれを用いた成形品

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06344361A (ja) * 1993-06-07 1994-12-20 Ask:Kk 大型形状の樹脂成形体の製造方法
JPH11138515A (ja) * 1997-11-12 1999-05-25 Hideto Hashimoto 竹繊維シートおよび竹繊維シート成形物
JP2000160034A (ja) * 1998-11-25 2000-06-13 Nippon Shokubai Co Ltd 生分解性複合材料
JP2002068815A (ja) * 2000-08-31 2002-03-08 Nichiha Corp 木質セメント板およびその製造方法
JP2002127114A (ja) * 2000-10-26 2002-05-08 Nichiha Corp 繊維成形板および繊維成形板の製造方法
JP2002146219A (ja) * 2000-11-07 2002-05-22 Hitoshi Takagi 生分解性複合材料及びその作製方法
JP2002309007A (ja) * 2001-04-10 2002-10-23 Mitsubishi Rayon Co Ltd 繊維強化熱可塑性樹脂成形物およびその製造方法
JP2003039462A (ja) * 2001-07-26 2003-02-13 Hiroshi Mitsuboshi 植物性繊維を用いた成形物製造法
JP2003049001A (ja) * 2001-08-02 2003-02-21 Hitachi Chem Co Ltd シートモールディングコンパウンド及びそれを用いた成形品
JP2003039407A (ja) * 2001-08-03 2003-02-13 Takekkusu:Kk 竹製合板及び化粧板

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006226229A (ja) * 2005-02-18 2006-08-31 Yamato Giken Kk 車両用合成樹脂製筐体とその製造方法
CN102294714A (zh) * 2011-08-30 2011-12-28 安庆市永林竹塑板制造有限公司 一种复合竹塑板
CN109054285A (zh) * 2018-06-26 2018-12-21 桂林电子科技大学 一种竹纤维与竹丝协同提高抗弯强度的pom复合材料及其制备方法
CN110144648A (zh) * 2019-05-14 2019-08-20 张毅 竹纤维增强复合绳线的生产工艺

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