CN102964788A - Natural bamboo fiber reinforced polylactic acid composite material, its product and preparation method - Google Patents
Natural bamboo fiber reinforced polylactic acid composite material, its product and preparation method Download PDFInfo
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- CN102964788A CN102964788A CN2011102571367A CN201110257136A CN102964788A CN 102964788 A CN102964788 A CN 102964788A CN 2011102571367 A CN2011102571367 A CN 2011102571367A CN 201110257136 A CN201110257136 A CN 201110257136A CN 102964788 A CN102964788 A CN 102964788A
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Abstract
The invention relates to fiber reinforced polymer composite materials, more specifically to a natural bamboo fiber reinforced polylactic acid composite material, a product prepared from the composite material and a preparation method. According to the invention, a composite material of polylactic acid and natural bamboo fibers is adopted the raw material of automobile parts, and low carbon and environmental protection effects can be achieved. Meanwhile, waste natural fibers can also be utilized to achieve cost lowering and benefit increasing and contribute to weight reduction.
Description
Technical field
The present invention relates to fibre-reinforced polymer composites, more particularly, relate to lactic acid composite material and goods and preparation method that bamboo fiber strengthens.
Background technology
Japan has developed poly(lactic acid) (PLA) in 2000.Toray company has developed automobile-used foot mat and spare tyre case lid take high-performance PLA fiber as major ingredient in conjunction with PLA resin modified technology, fibre manufacturing technology and dyeing processing technology.The spare tyre case lid uses at the major tuneup compact car " Raum " that Toyota Motor Corporation released in 2003.After foot pad and the spare tyre case lid exploitation that continues, Dong Li company has developed again the PLA product of other trolley parts that are applicable to car door, wheel rim, vehicle seat, ceiling material.But above application all is to be based upon poly(lactic acid) is drawn into first on the basis of fiber, and lower and shock resistance is poor by the product strength of polylactic acid raw material preparation.
Poly(lactic acid) and bamboo fiber are Biodegradable materials, if can be applied in automotive field, can really reach so the effect of low-carbon environment-friendly.Make high-intensity lactic acid composite material and use it for automotive field if especially can strengthen poly(lactic acid) with bamboo fiber, then can obtain the good goods of intensity height, shock resistance and realize really accomplishing zero release.Yet, also do not have producer that this series products really is used for automotive field.
Summary of the invention
Technical problem to be solved by this invention provides a kind of fibre-reinforced lactic acid composite material, by described lactic acid composite material can prepare low-carbon environment-friendly, can be degradable light weight product.
For solving above technical problem, the invention provides following technical scheme:
1. the lactic acid composite material that strengthens of bamboo fiber is characterized in that with total restatement of described lactic acid composite material, described lactic acid composite material comprises:
Poly(lactic acid) 30%～70%
Bamboo fiber 30%～70%.
2. technical scheme 1 described lactic acid composite material is characterized in that, described lactic acid composite material is particulate state, sheet material or sheet material.
3. technical scheme 1 or 2 described lactic acid composite materials is characterized in that described lactic acid composite material also comprises toughner and/or tinting material.
4. each described lactic acid composite material among the technical scheme 1-3 is characterized in that, with the alternative described bamboo fiber of the synthon of Caulis Sacchari sinensis fiber or bamboo fibers.
5. each described lactic acid composite material among the technical scheme 1-4 is characterized in that, described poly(lactic acid) is powder or fiber.
6. by the goods of each described lactic acid composite material preparation among the technical scheme 1-5, it is characterized in that described goods are selected from door-plate, IP muting plate, end cap, clothing plate, ceiling, sound-heat insulated cushion and the wheelhouse that uses on the automobile.
7. the method for technology of preparing scheme 6 described goods is characterized in that, described method comprises the steps:
(1) poly(lactic acid) and bamboo fiber and optional toughner and tinting material are evenly mixed; With
(2) hot-forming with obtaining uniform mixture in the step (1).
8. technical scheme 7 described methods is characterized in that, carry out first granulation with obtaining uniform mixture in the step (1).
9. the method for technology of preparing scheme 6 described goods is characterized in that, comprises the steps:
(1) poly(lactic acid) and bamboo fiber and optional toughner and tinting material are evenly mixed;
(2) just the middle uniform mixture that obtains of step (1) is carded to the similar and different parallel material of thickness with carding machine;
(3) the parallel material that step (2) is obtained is overlapping, then with random pin with overlapping parallel material be made into not can layering overlapping sheet material;
(4) the overlapping sheet material that step (3) is obtained is cut into the work in-process of suitable dimension, puts into hot pressing die, carries out hot-forming.
10. each described method among the technical scheme 7-9 is characterized in that, described hot-forming temperature is 90～200 ℃, preferred 170 ℃.
In some embodiments, the content of described poly(lactic acid) is 30～50%, and the content of described bamboo fiber is 30～50%, with total restatement of described lactic acid composite material.
In a preferred embodiment, the content of described poly(lactic acid) is 60%, and the content of described bamboo fiber is 40%, with total restatement of described lactic acid composite material.
In a preferred embodiment, described poly(lactic acid) is acid fiber by polylactic, the excellent in uniformity of the lactic acid composite material that obtains.
In the present invention, the length of described acid fiber by polylactic can be 0.05～200mm, and fiber number is 2～200dtex.In a preferred embodiment, the fiber number of described acid fiber by polylactic is 50dtex.In a preferred embodiment, the length of described acid fiber by polylactic is 10-100mm.In a preferred embodiment, the length of described acid fiber by polylactic is 50mm.In a preferred embodiment, the length of described acid fiber by polylactic is 2～5mm, preferred 3mm.
In the present invention, the length of described bamboo fiber can be 0.05～200mm, and fiber number is 2～200dtex.In a preferred embodiment, the fiber number of described bamboo fiber is 50dtex.In some preferred embodiments, the length of described acid fiber by polylactic is 20-100mm.In a preferred embodiment, the length of described bamboo fiber is 50mm.In a preferred embodiment, the length of described bamboo fiber is 2～5mm, preferred 3mm.
In some embodiments, extruder temperature is 180～230 ℃ in the described granulation stage, preferred 200 ℃;
In the present invention, in the situation that needs mould directly to cut, described hot-forming pressure condition is 150 tons-200 tons, preferred 150 tons～180 tons, and more preferably 160 tons; In the situation that does not need direct die-cut, described hot-forming pressure condition is 20 tons～40 tons, preferred 30 tons.The described hot-forming dwell time is 40 seconds～10 seconds, preferred 20 seconds.
The conventional equipment of preparation method's of the present invention hot-forming stage at the preparation hemp fibre board carries out, and adopts operational path and the processing condition identical with the preparation hemp fibre board.
Used equipment is conventional equipment among the preparation method of the present invention, is carding machine commonly used in the textile industry such as carding machine.
Then the present invention makes product with poly(lactic acid) as binding agent natural fiber in conjunction with other under suitable pressure and temperature.The present invention adopts the compound starting material as auto parts of poly(lactic acid) and natural fiber, has the effect of low-carbon environment-friendly, and the product that makes thus can be used as hat rack, ceiling, IP, door-plate of the luxury cars such as 985 etc.Can also utilize simultaneously the waste material of natural fiber through recycling and the compound raw material of making of poly(lactic acid), thereby reach cost efficiency and low-carbon environment-friendly is also made certain contribution for lightweight simultaneously.The tensile strength of matrix material of the present invention is 12PMa～60PMa.
Description of drawings
Fig. 1 is the schema for preparing according to an embodiment of the invention the lactic acid composite material goods of bamboo fiber enhancing;
Fig. 2 is the schema for preparing according to another embodiment of the invention the lactic acid composite material goods of bamboo fiber enhancing.
Embodiment
The below adopts some specific embodiments, and the present invention will be described, but scope of the present invention is not limited to this.Following raw material, equipment and testing method have been adopted in embodiments of the present invention.
Poly(lactic acid): available from the upper sea green bio tech ltd of moulding, fiber number is 2dtex, length is 50mm, and anti-pilling is good, flame retardancy is good (LOI 26～27), intensity is that 4.5～5.5cN/dtex, tensile strength are 30%, Young's modulus is 400～600kg/mm
2
Bamboo fiber: available from Fujian Haibosi Chmeical Technology Co., Ltd., fiber number is 10dtex, and length is 100mm, breaking tenacity: vertical 240.7cN/dtex, horizontal 71.7cN/dtex, unit elongation: vertical 21.5%, horizontal 22.5%.
Nylon: available from Yizheng Chemical Fiber Co., Ltd., SINOPEC, the trade mark is WF320.
Screw extrusion press: U.S.'s Cincinnati injection moulding machine.
Carding machine: the U.S. refined carding machine in Nantong.
Heat pressing forming machines: the Wuxi roc reaches heat pressing forming machines.
According to GM1829 the interior material performance is tested.
According to TS-INT-001 four dischargings such as formaldehyde etc. are tested.
Test distributing according to GMW8081.
Embodiment 1
Acid fiber by polylactic and bamboo fiber are evenly mixed, with carding machine be carded to different thickness (10～50mm) a plurality of parallel material, the then overlapping placement of parallel material, with random pin with overlapping parallel material be made into not can layering overlapping sheet material.Be cut into afterwards the work in-process of suitable dimension, carry out hot-formingly under 170 ℃, cooling obtains goods.Wherein with total restatement of described lactic acid composite material, the content of each raw material is:
Acid fiber by polylactic 60%
Bamboo fiber 40%
Embodiment 2
Acid fiber by polylactic, bamboo fiber and nylon are evenly mixed, and then 170 ℃ of lower extruding injection mouldings, cooling makes goods.
Wherein with total restatement of described lactic acid composite material, the content of each raw material is:
Acid fiber by polylactic 60%
Bamboo fiber 35%
Nylon 5%
Embodiment 3
Acid fiber by polylactic and bamboo fiber are evenly mixed, the uniform mixture that obtains is carried out 170 ℃ of lower granulations, enter injection mould by the screw extrusion press screw extruding afterwards and carry out moulding at 120 ℃ and 200 tons, obtain goods after the cooling.
Wherein with total restatement of described lactic acid composite material, the content of each raw material is:
Acid fiber by polylactic 70%
Bamboo fiber 30%
Embodiment 4
Embodiment 1～3 prepared goods are tested, and all samples all reaches following testing standard:
Find that by test the flexural strength of the goods that embodiment 1～3 is prepared can reach 3600N/M, the moisture regain performance is at 0.4-0.6%, and flame retardant properties meets GB8410, without burning.Adopt the lactic acid composite material goods of the inventive method preparation to have good flexural strength, anti-moisture regain, formaldehydeless, odorlessness, the performance such as fire-retardant.
Claims (10)
1. the lactic acid composite material that strengthens of bamboo fiber is characterized in that with total restatement of described lactic acid composite material, described lactic acid composite material comprises:
Poly(lactic acid) 30%～70%
Bamboo fiber 30%～70%.
2. lactic acid composite material claimed in claim 1 is characterized in that, described lactic acid composite material is particulate state, sheet material or sheet material.
3. claim 1 or 2 described lactic acid composite materials is characterized in that described lactic acid composite material also comprises toughner and/or tinting material.
4. each described lactic acid composite material among the claim 1-3 is characterized in that, with the alternative described bamboo fiber of the synthon of Caulis Sacchari sinensis fiber or bamboo fibers.
5. each described lactic acid composite material among the claim 1-4 is characterized in that, described poly(lactic acid) is powder or fiber.
6. by the goods of each described lactic acid composite material preparation among the claim 1-5, it is characterized in that described goods are selected from door-plate, IP muting plate, end cap, clothing plate, ceiling, sound-heat insulated cushion and the wheelhouse that uses on the automobile.
7. prepare the method for goods claimed in claim 6, it is characterized in that, described method comprises the steps:
(1) poly(lactic acid) and bamboo fiber and optional toughner and tinting material are evenly mixed; With
(2) hot-forming with obtaining uniform mixture in the step (1).
8. method claimed in claim 7 is characterized in that, carries out first granulation with obtaining uniform mixture in the step (1).
9. prepare the method for goods claimed in claim 6, it is characterized in that, comprise the steps:
(1) poly(lactic acid) and bamboo fiber and optional toughner and tinting material are evenly mixed;
(2) just the middle uniform mixture that obtains of step (1) is carded to the similar and different parallel material of thickness with carding machine;
(3) the parallel material that step (2) is obtained is overlapping, then with random pin with overlapping parallel material be made into not can layering overlapping sheet material;
(4) the overlapping sheet material that step (3) is obtained is cut into the work in-process of suitable dimension, puts into hot pressing die, carries out hot-forming.
10. each described method among the claim 7-9 is characterized in that, described hot-forming temperature is 90～200 ℃, preferred 170 ℃.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937180A (en) * | 2014-03-11 | 2014-07-23 | 绍兴文理学院 | Preparation method for biodegradable raw bamboo fiber reinforced composite |
| CN105086485A (en) * | 2015-08-18 | 2015-11-25 | 九江学院 | Multi-component composite material of environmental compatible polyester and plants and preparation method of multi-component composite material |
| CN105172271A (en) * | 2015-07-31 | 2015-12-23 | 苏州天健竹业科技有限公司 | Lightweight anti-impact bicycle frame material and preparation method therefor |
| CN105504720A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | High-performance automotive environment-friendly interior material |
| CN105504721A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | High-strength light fireproof automotive interior material |
| CN105802169A (en) * | 2016-06-03 | 2016-07-27 | 罗浩 | Preparation method of degradable composite doped with fluffy bamboo fiber |
| CN106217826A (en) * | 2016-07-27 | 2016-12-14 | 张蒙 | A kind of automotive trim modified bamboo fiber lactic acid composite material |
| CN113637300A (en) * | 2021-09-02 | 2021-11-12 | 杭州卓普新材料科技有限公司 | Full-biomass polylactic acid bamboo fiber composite material and preparation method thereof |
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| CN101812773A (en) * | 2010-03-30 | 2010-08-25 | 奇瑞汽车股份有限公司 | Composite material for automobile interior part and production method thereof |
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- 2011-09-01 CN CN2011102571367A patent/CN102964788A/en active Pending
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| CN101812773A (en) * | 2010-03-30 | 2010-08-25 | 奇瑞汽车股份有限公司 | Composite material for automobile interior part and production method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937180A (en) * | 2014-03-11 | 2014-07-23 | 绍兴文理学院 | Preparation method for biodegradable raw bamboo fiber reinforced composite |
| CN103937180B (en) * | 2014-03-11 | 2016-07-06 | 绍兴文理学院 | The preparation method of biodegradable bamboo fiber reinforced composite |
| CN105172271A (en) * | 2015-07-31 | 2015-12-23 | 苏州天健竹业科技有限公司 | Lightweight anti-impact bicycle frame material and preparation method therefor |
| CN105172271B (en) * | 2015-07-31 | 2018-01-26 | 王莎 | A kind of lightweight shock resistance bicycle frame materials and preparation method thereof |
| CN105086485A (en) * | 2015-08-18 | 2015-11-25 | 九江学院 | Multi-component composite material of environmental compatible polyester and plants and preparation method of multi-component composite material |
| CN105504720A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | High-performance automotive environment-friendly interior material |
| CN105504721A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | High-strength light fireproof automotive interior material |
| CN105802169A (en) * | 2016-06-03 | 2016-07-27 | 罗浩 | Preparation method of degradable composite doped with fluffy bamboo fiber |
| CN106217826A (en) * | 2016-07-27 | 2016-12-14 | 张蒙 | A kind of automotive trim modified bamboo fiber lactic acid composite material |
| CN113637300A (en) * | 2021-09-02 | 2021-11-12 | 杭州卓普新材料科技有限公司 | Full-biomass polylactic acid bamboo fiber composite material and preparation method thereof |
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Application publication date: 20130313 |