CN103232641A - Environment-friendly bamboo-plastic automotive bumper and preparation method thereof - Google Patents
Environment-friendly bamboo-plastic automotive bumper and preparation method thereof Download PDFInfo
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- CN103232641A CN103232641A CN201310165493XA CN201310165493A CN103232641A CN 103232641 A CN103232641 A CN 103232641A CN 201310165493X A CN201310165493X A CN 201310165493XA CN 201310165493 A CN201310165493 A CN 201310165493A CN 103232641 A CN103232641 A CN 103232641A
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Abstract
The invention discloses an environment-friendly bamboo-plastic automotive bumper and a preparation method thereof. The environment-friendly bamboo-plastic automotive bumper comprises the following components in parts by weight: 100 parts of polypropylene, 6-10 parts of high-density polyethylene, 8-16 parts of thermoplastic elastomer, 20-40 part of bamboo fiber and 0.4-0.8 part of a modifying agent. The environment-friendly bamboo-plastic automotive bumper disclosed by the invention has good molding machinability and mechanical performance. As the pure natural bamboo fiber is used as a raw material, the using amount of a plastic raw material and the cost of the product are reduced; and the environment-friendly bamboo-plastic automotive bumper is environment-friendly and has excellent anti-bacterial property.
Description
Technical field
The present invention relates to a kind of bumper and preparation method thereof, relate in particular to a kind of environmental protection bamboo and mould bumper and preparation method thereof.
Background technology
Bumper is the security device that absorbs the foreign impacts power that relaxes, protection vehicle body front and rear part.
Before 20 years, collision bumper is based on metallic substance before and after the car, is that steel plate more than 3 millimeters strikes out the U-lag steel with thickness, surface treatment chromium plating, with longitudinal beam riveted joint or weld together, with vehicle body one section bigger gap is arranged, seem parts that add up.
The plastics collision bumper has intensity, rigidity and ornamental, on safety, can play shock absorption when automobile crashes, car body before and after the protection; From in appearance, can be very natural be combined in one with car body, completely be integral, have excellent decoration, become the vitals of decorating the car external form.
Along with developing of automobile industry, bumper has also moved towards on the road of innovation as a kind of important security device.Collision bumper is except keeping original defencive function before and after the car of today, also will pursue harmony and unification with the car body moulding, the lightweight of pursuit itself.In order to reach this purpose, the front and back collision bumper of car has adopted plastics at present, and people are called the plastics collision bumper.
The plastics that the plastics collision bumper uses use polyester system and polypropylene-based two kinds of materials substantially, adopt injection moulding to make.For example the collision bumper of beautiful 405 cars has adopted the polyester based material also to make with reaction injection mold forming method.And the collision bumper of the model cars such as Xiali of the Santana in popular Audi 100, golf, Shanghai, Tianjin has adopted polypropylene-based material to make with injection moulding.
Wood plastic composite (wood-plastics composites, be called for short WPC) be the modified thermoplastic material of filling, strengthening with xylon or vegetable fibre, have the cost of timber and plastics and the advantage of performance concurrently, through extruding or compression moulding is section bar, sheet material or other goods, substitute timber and plastics.
Bamboo fibers is a kind of cellulosic fibre that extracts from the bamboo of self-sow, is the fifth-largest natural fiber after cotton, fiber crops, hair, silk.Bamboo fibers has air permeability and good, moment water-absorbent, stronger wear resistance and good characteristics such as dyeability, have again simultaneously natural antibacterial, antibacterial, except mite, deodorization and anti-ultraviolet function.
Adopt bamboo powder filled matrix material section to reduce cost, but because bamboo fibers is hydroaropic substance, the surface has a large amount of polar functional groups, with the recombination process of plastics in, and it is poor to exist higher interfacial energy between the hydrophobic nature material polypropylene, and two kinds of different materials of polarity are difficult to reach sufficient surface and merge mutually.Therefore how to adopt properties-correcting agent that two kinds of materials are fully merged, guarantee its mechanical property, become a difficult point of research bamboo fibers polypropylene composite material research.
Summary of the invention
At above shortcomings in the prior art, one of technical problem to be solved by this invention provides a kind of environmental protection bamboo to mould bumper.
Two of technical problem to be solved by this invention provides above-mentioned environmental protection bamboo to mould the preparation method of bumper.
Technical problem to be solved by this invention is achieved by the following technical solution:
A kind of environmental protection bamboo is moulded bumper, comprises following components by part by weight: 100 parts of polypropylene, high density polyethylene(HDPE) 6-10 part, thermoplastic elastomer 8-16 part, bamboo fibers 20-40 part, properties-correcting agent 0.4-0.8 part.
Preferably,
Described properties-correcting agent is the mixture of coupling agent and fatty acid ester.
Described coupling agent is a kind of or its mixture in sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, dimerization di (isooctyl) phosphate Magnesium Stearate, the vinyltrimethoxy silane.
Described fatty acid ester is glyceryl monostearate, 1,2-stearin, 1, a kind of or its mixture in 3-distearin and the Tristearoylglycerol.
Optimally,
Described properties-correcting agent is made of by weight following component: sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester 10-30 part, vinyltrimethoxy silane 10-30 part, glyceryl monostearate 50-70 part.Directly sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, vinyltrimethoxy silane and glyceryl monostearate are mixed, can make this properties-correcting agent.
Described polypropylene is Co-polypropylene.
The present invention also provides above-mentioned environmental protection bamboo to mould the preparation method of bumper, comprises the steps:
(1) with properties-correcting agent bamboo fibers is carried out surface modification treatment, obtain the modification bamboo fibers;
(2) with stirring in polypropylene, high density polyethylene(HDPE), thermoplastic elastomer and the modification bamboo fibers adding super mixer, through the twin screw extruder extruding pelletization, make plastic grain;
(3) above-mentioned plastic grain is added injection moulding in the injection moulding machine, make described environmental protection bamboo and mould bumper.
Further,
In the described step (1), surface modification treatment is: bamboo fibers is added in the homogenizer, add properties-correcting agent again, 70-80 ℃ of control temperature, rotating speed 2000-3000r/min, churning time 6-10 minute.
Need to prove, used bamboo fibers is dried bamboo fibers among the present invention, preferably controls the bamboo fibers water ratio less than 2wt%, is good about 1wt%, wherein the drying means of bamboo fibers is well known to those skilled in the art, and for example carries out drying in 100-105 ℃ convection oven.
In the described step (2), in the super mixer, whipping temp 60-80 ℃, churning time 2-4 minute; Extrusion temperature 180-200 in the twin screw extruder ℃, screw speed is 80-160r/min.
Obviously, for improving other performances of product, can also add other auxiliary agents adaptively, as fire retardant, tinting material, oxidation inhibitor, thermo-stabilizer, photostabilizer, anti-impact modifier and static inhibitor etc. in the present invention.
Concrete, in the present invention:
Described polypropylene is called for short PP, belongs to non-polar polymer, has excellent dielectricity and electrical insulating property, and electrical property is not subjected to the influence of ambient moisture and electric field frequency substantially, and in the working range that allows, the temperature rising can make electrical property reduce, and arc resistance is higher.Specifically can select for use as the Taiwan platform PPK4535 of company Co-polypropylene, the W531L of SUMITOMO CHEMICAL company Co-polypropylene, the Guangzhou petrochemical industry J641 of branch office of China Petrochemical Industry Co-polypropylene.
Described high density polyethylene(HDPE) abbreviates HDPE as, is a kind of degree of crystallinity height, nonpolar thermoplastic resin.The milky appearance of ortho states HDPE is to a certain degree translucent in meagre cross section.Specifically can select for use as: the U.S. RTP company trade mark is 700 high density polyethylene(HDPE), the high density polyethylene(HDPE) of Japanese Japan company trade mark 5000, the high density polyethylene(HDPE) of the trade mark 7000F of Mitsui Chemicals company.
Described thermoplastic elastomer is a kind of snappiness with rubber, high strength, high resilience, but the material that has the feature of injection moulding processing again.Have environment-protecting asepsis safety, durometer level is wide, and good tint permanence is arranged, soft-touch, weathering resistance, fatigue resistance and temperature tolerance.Thermoplastic elastomer had both had the processing characteristics of thermoplastics, had the physicals of vulcanized rubber again.Specifically can select for use as: the trade mark of German Hirst company is that the trade mark of the thermoplastic elastomer of 100A, U.S. Ji Lishi company is that the trade mark of the thermoplastic elastomer of 0492N-NE, du pont company is that the trade mark of 10080 thermoplastic elastomer, toray company is that the trade mark of 4047 thermoplastic elastomer, Dow Corning Corporation is that the trade mark of the thermoplastic elastomer of A0740, U.S. Lion company is the thermoplastic elastomer of IM-17004.
Described bamboo fibers, can be to be raw material with the bamboo, fibrous byproduct after high temperature squeezes vinifera palm oil comprises mao bamboon fiber, cizu fiber, lingnania chugii fiber, green bark bamboo fiber, tonkin cane fiber, Punting Pole Bambusa fiber, and bamboo fibers can be a kind of or its mixture in the above-mentioned bamboo fiber.Also can be bamboo pulp fiber, as the Lyocell bamboo fibers.The Lyocell bamboo fibers claims the solvent method bamboo fibers again, be a kind of be the regenerated bamboo fiber that raw material adopts Lyocell technology spinning to form with the bamboo cellulose pulp.
Sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, CAS number: 65345-34-8, English name: Isopropyl tri (dioctylphosphate) titanate.
Vinyltrimethoxy silane, another name: vinyl trimethoxy silane, silane coupling agent YDH-171, English name: Silane, ethenyltrimethoxy, CAS number: 2768-02-7.
Glyceryl monostearate, English name: Glyceryl monostearate, CAS number: 31566-31-1.
Environmental protection bamboo of the present invention is moulded bumper, and forming process and mechanical property are all good.It is raw material that the present invention adopts the bamboo fibers of pure natural, reduces the usage quantity of plastic raw materials, reduces the cost of product, and environmental protection, preparation method are simple, are easy to realize large scale continuous prod.And because the adding of bamboo fibers makes the present invention have excellent anti-microbial property.
Embodiment
Specific embodiments of the invention, further illustrate the present invention, should understand these embodiment only be used for to explain the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to various equivalents of the present invention or modification.
Embodiment 1
Place 105 ℃ convection oven to carry out drying bamboo fibers, control its moisture content at 1wt%.With dried bamboo fibers mechanical disintegration, cross 200 mesh sieves, standby.
Take by weighing each raw material according to corresponding embodiment 1 data in the table 1.
(1) bamboo fibers is added in the homogenizer, add properties-correcting agent again, 75 ℃ of control temperature of charge, rotating speed 2500r/min, churning time 8 minutes obtains the modification bamboo fibers;
(2) will stir 70 ℃ of whipping temps, churning time 3 minutes in polypropylene, high density polyethylene(HDPE), thermoplastic elastomer and the modification bamboo fibers adding super mixer; Through the twin screw extruder extruding pelletization, 190 ℃ of extrusion temperatures, screw speed are 120r/min, and cooling makes plastic grain;
(3) above-mentioned plastic grain is added injection moulding in the injection moulding machine, make described environmental protection bamboo and mould bumper.
Table 1: the environmental protection bamboo is moulded bumper formula table unit: kilogram
| ? | Embodiment 1 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 |
| Co-polypropylene | 100 | 100 | 100 | 100 |
| High density polyethylene(HDPE) | 8 | 8 | 8 | 8 |
| Thermoplastic elastomer | 12 | 12 | 12 | 12 |
| Bamboo fibers | 30 | 30 | 30 | 30 |
| Sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester | 0.12 | 0.6 | / | / |
| Vinyltrimethoxy silane | 0.12 | / | 0.6 | / |
| Glyceryl monostearate | 0.36 | / | / | 0.6 |
Wherein, in table 1, Co-polypropylene adopts the Taiwan K4535 of platform company Co-polypropylene; Thermoplastic elastomer adopts the high density polyethylene(HDPE) of the Mitsui Chemicals trade mark 7000F of company; The trade mark of thermoplastic elastomer employing du pont company is 10080 thermoplastic elastomer; Bamboo difficult to understand in bamboo fibers employing Shanghai Lyocell Fibre Research ﹠ Development Co., Ltd.
The Lyocell bamboo fibers, fiber number 2.58dtex.
Comparative Examples 1-3
Take by weighing each raw material according to corresponding Comparative Examples 1-3 data in the table 1.Adopt embodiment 1 described method to prepare described environmental protection bamboo respectively and mould bumper.
Test case 1
Each example is carried out performance test, and concrete data see Table 2.
Table 2: the environmental protection bamboo is moulded bumper performance test table
| ? | Notched Izod impact strength, KJ/m 2 | Draw high intensity, Mpa | Flexural strength, Mpa | Modulus in flexure, Mpa |
| Testing method | GB/T1043.1-2008 | GB/T1040.1-2006 | GB/T9341-2008 | GB/T9341-2008 |
| Embodiment 1 | 24.5 | 22.8 | 27.5 | 1248 |
| Comparative Examples 1 | 23.6 | 21.3 | 26.2 | 1025 |
| Comparative Examples 2 | 22.5 | 20.7 | 25.4 | 1143 |
| Comparative Examples 3 | 22.9 | 21.6 | 25.6 | 1178 |
The present invention adopts composite modifier that bamboo fibers is carried out surface modification treatment, make the surface active of bamboo fibers, the properties-correcting agent that mixes at its surface parcel coupling agent and fatty acid ester, thereby improved the consistency between bamboo fibers and polypropylene and the thermoplastic elastomer, improved polyacrylic plasticizing capacity simultaneously, reduce melt viscosity, improve mobile, increase consistency and dispersiveness between the system each component effectively, improve the bonding interface situation of material system, thereby make that every mechanical property is effectively improved.
Claims (8)
1. an environmental protection bamboo is moulded bumper, it is characterized in that, comprises following components by part by weight: 100 parts of polypropylene, high density polyethylene(HDPE) 6-10 part, thermoplastic elastomer 8-16 part, bamboo fibers 20-40 part, properties-correcting agent 0.4-0.8 part.
2. environmental protection bamboo as claimed in claim 1 is moulded bumper, it is characterized in that: described properties-correcting agent is the mixture of coupling agent and fatty acid ester.
3. environmental protection bamboo as claimed in claim 2 is moulded bumper, it is characterized in that:
Described coupling agent is a kind of or its mixture in sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, dimerization di (isooctyl) phosphate Magnesium Stearate, the vinyltrimethoxy silane;
Described fatty acid ester is glyceryl monostearate, 1,2-stearin, 1, a kind of or its mixture in 3-distearin and the Tristearoylglycerol.
4. environmental protection bamboo as claimed in claim 3 is moulded bumper, it is characterized in that, described properties-correcting agent is made of by weight following component: sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester 10-30 part, vinyltrimethoxy silane 10-30 part, glyceryl monostearate 50-70 part.
5. mould bumper as each described environmental protection bamboo among the claim 1-4, it is characterized in that: described polypropylene is Co-polypropylene.
6. mould the preparation method of bumper as each described environmental protection bamboo among the claim 1-5, it is characterized in that, comprise the steps:
(1) with properties-correcting agent bamboo fibers is carried out surface modification treatment, obtain the modification bamboo fibers;
(2) with stirring in polypropylene, high density polyethylene(HDPE), thermoplastic elastomer and the modification bamboo fibers adding super mixer, through the twin screw extruder extruding pelletization, make plastic grain;
(3) above-mentioned plastic grain is added injection moulding in the injection moulding machine, make described environmental protection bamboo and mould bumper.
7. environmental protection bamboo as claimed in claim 6 is moulded the preparation method of bumper, it is characterized in that, in the described step (1), surface modification treatment is: bamboo fibers is added in the homogenizer, add properties-correcting agent again, 70-80 ℃ of control temperature, rotating speed 2000-3000r/min, churning time 6-10 minute.
8. environmental protection bamboo as claimed in claim 6 is moulded the preparation method of bumper, it is characterized in that: in the described step (2), and in the super mixer, whipping temp 60-80 ℃, churning time 2-4 minute; Extrusion temperature 180-200 in the twin screw extruder ℃, screw speed is 80-160r/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386295A (en) * | 2015-11-07 | 2016-03-09 | 浙江华江科技发展有限公司 | Preparation method of modified bamboo fibers for polyolefin resin |
| CN106496961A (en) * | 2016-11-17 | 2017-03-15 | 无锡明盛纺织机械有限公司 | A kind of engineering plastic materials and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338052A (en) * | 2007-07-06 | 2009-01-07 | 比亚迪股份有限公司 | Polypropylene material for automotive bumper and method for preparing same |
| CN102558803A (en) * | 2011-12-23 | 2012-07-11 | 刘文富 | Automobile bumper material and preparation method thereof |
| CN102794803A (en) * | 2012-08-30 | 2012-11-28 | 大连绿之态科技有限公司 | Manufacturing method for vegetable fiber compound tableware |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338052A (en) * | 2007-07-06 | 2009-01-07 | 比亚迪股份有限公司 | Polypropylene material for automotive bumper and method for preparing same |
| CN102558803A (en) * | 2011-12-23 | 2012-07-11 | 刘文富 | Automobile bumper material and preparation method thereof |
| CN102794803A (en) * | 2012-08-30 | 2012-11-28 | 大连绿之态科技有限公司 | Manufacturing method for vegetable fiber compound tableware |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386295A (en) * | 2015-11-07 | 2016-03-09 | 浙江华江科技发展有限公司 | Preparation method of modified bamboo fibers for polyolefin resin |
| CN106496961A (en) * | 2016-11-17 | 2017-03-15 | 无锡明盛纺织机械有限公司 | A kind of engineering plastic materials and preparation method |
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Granted publication date: 20150225 Termination date: 20190508 |