CN103232687B - Environment-friendly bamboo-plastic automotive radiator grille and preparation method thereof - Google Patents
Environment-friendly bamboo-plastic automotive radiator grille and preparation method thereof Download PDFInfo
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- CN103232687B CN103232687B CN201310165492.5A CN201310165492A CN103232687B CN 103232687 B CN103232687 B CN 103232687B CN 201310165492 A CN201310165492 A CN 201310165492A CN 103232687 B CN103232687 B CN 103232687B
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Abstract
The invention discloses an environment-friendly bamboo-plastic automotive radiator grille and a preparation method thereof. The environment-friendly bamboo-plastic automotive radiator grille comprises the following components in parts by weight: 100 parts of polybutylene terephthalate, 30-70 parts of polycarbonate, 15-20 parts of bamboo fiber and 0.3-0.4 part of a modifying agent. The environment-friendly bamboo-plastic automotive radiator grille disclosed by the invention has high pull-up strength, bending strength, bending modulus and notch impact strength; 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 radiator grille is environment-friendly and has excellent anti-bacterial property.
Description
Technical field
The present invention relates to a kind of automobile radiator grille and preparation method thereof, particularly relate to a kind of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille and preparation method thereof.
Background technology
Radiator grid is also known as middle net, radiator cover, and it is contained in the front of radiator of car engine, plays the effect of ventilation and heat, is also operate outside part, therefore requires that starting material are high temperature resistant, weathering resistance is strong.Heat dissipation grid is the anterior bright spot of automobile, some requirement plating, also requires that surface is smooth, more attractive in appearance like this, beautiful, therefore requires that starting material have excellent mobility, good plating and spraying property.
Wood plastic composite (wood-plastics composites, be called for short WPC) be the modified thermoplastic material of filling with xylon or vegetable fibre, strengthening, have the cost of timber and plastics and the advantage of performance concurrently, through to extrude or compression moulding is section bar, sheet material or other goods, substitute timber and plastics.
Bamboo fibers is a kind of cellulosic fibre extracted from the bamboo of self-sow, is the fifth-largest natural fiber after cotton, fiber crops, hair, silk.Bamboo fibers have good ventilation property, moment the characteristic such as water-absorbent, stronger wear resistance and good dyeability, have again simultaneously natural antibacterial, antibacterial, except mite, deodorization and anti-ultraviolet function.
Bamboo powder filled matrix material section is adopted to reduce costs, but because bamboo fibers is hydroaropic substance, surface has a large amount of polar functional groups, with the recombination process of plastics, and it is poor to there is higher interfacial energy between hydrophobic substance polybutylene terephthalate, polycarbonate, the material that polarity is different is difficult to reach surface fully and mutually merges.Bamboo fibers is not identical with xylon simultaneously, and its properties-correcting agent used also there are differences.Therefore how to adopt properties-correcting agent that bamboo fibers and plastics are fully merged, guarantee its mechanical property, become a difficult point of research bamboo-plastic composite material research.
Summary of the invention
For above shortcomings in prior art, one of technical problem to be solved by this invention provides a kind of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
Two of technical problem to be solved by this invention provides the preparation method of above-mentioned Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
Technical problem to be solved by this invention, is achieved by the following technical solution:
A kind of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille, comprises the component of following weight parts: polybutylene terephthalate 100 parts, polycarbonate 30-70 part, bamboo fibers 15-20 part, properties-correcting agent 0.3-0.4 part.
Preferably,
Described properties-correcting agent is one in coupling agent and fatty acid ester or its mixture.
Described coupling agent is silane coupling agent, titanate coupling agent, phosphate coupling agent or chromium complex.
The general formula of silane coupling agent is RSiX3, in formula, R represents the groups such as amino, sulfydryl, vinyl, epoxy group(ing), cyano group and methacryloxy, these groups and different matrix resins all have stronger response capacity, and X represents the alkoxyl group (as methoxyl group, oxyethyl group etc.) that can be hydrolyzed.Silane coupling agent has KH550 at home, this several model of KH560, KH570, KH792, DL602, DL171.
Titanate coupling agent comprises four kinds of base types: 1. monoalkoxy type: this kind of coupling agent is applicable to various kinds of resin based composites system, is particularly suitable for not containing free-water, only containing the infill system of chemical bond Heshui or mechanical water; 2. monoalkoxy tetra-sodium ester type: such coupling agent is applicable to the multiple composite system of resin base, is particularly suitable for the filler systems that water capacity is high; 3. chelating type: such coupling agent is applicable to the multiple composite system of resin base, because they have extraordinary stability to hydrolysis, this kind of coupling agent is specially adapted to aqueous polymer systems; 4. coordination build: such coupling agent is used in various kinds of resin base or rubber-base composite material system good coupling effect, which overcomes the shortcoming that general titanate coupling agent is used in polymer matrix composites system.
Described coupling agent is one in sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, dimerization di (isooctyl) phosphate Magnesium Stearate, vinyltrimethoxy silane and N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane or its mixture.
Described fatty acid ester is one in glyceryl monostearate, 1,2-stearin, 1,3-distearin and Tristearoylglycerol or its mixture.
More preferably,
Described properties-correcting agent, is made up of by weight following component: sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester 10-30 part, N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane 20-40 part, glyceryl monostearate 40-60 part.Directly sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane and glyceryl monostearate are mixed, this properties-correcting agent can be obtained.
Further preferably,
A kind of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille, comprises the component of following weight parts: polybutylene terephthalate 100 parts, polycarbonate 30-70 part, bamboo fibers 15-25 part, properties-correcting agent 0.3-0.5 part, antiaging agent 0.1-0.5 part.
Described antiaging agent is made up of following compositions in weight percentage: calcium stearate 30-50%, triphenyl phosphite 20-40%, lauric acid dibutyitin maleate 20-40%.
Present invention also offers the preparation method of above-mentioned Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille, comprise the steps:
(1) with properties-correcting agent, surface modification treatment is carried out to bamboo fibers, obtain modified bamboo fiber;
(2) polybutylene terephthalate, polycarbonate and modified bamboo fiber are added in super mixer stir, through twin screw extruder extruding pelletization, obtained plastic grain;
(3) above-mentioned plastic grain is added injection moulding in injection moulding machine, obtained described Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
If have antiaging agent in formula, then in step (2), antiaging agent can be added in super mixer with polybutylene terephthalate, polycarbonate together with modified bamboo fiber and stir.
Further,
In described step (1), surface modification treatment is: added in homogenizer by bamboo fibers, then adds properties-correcting agent, control temperature 70-80 DEG C, rotating speed 2000-3000r/min, churning time 6-10 minute.
It should be noted that, bamboo fibers used in the present invention is dried bamboo fibers, and preferably controlling bamboo fibers water ratio and be less than 2wt%, is good at about 1wt%, wherein the drying means of bamboo fibers is well known to those skilled in the art, such as, in the convection oven of 100-105 DEG C, carry out drying.
In described step (2), in super mixer, whipping temp 70-90 DEG C, control rotating speed at 500-800r/min, churning time 5-10 minute; Extrusion temperature 160-190 DEG C in twin screw extruder, screw speed is 80-160r/min.
Obviously, in the present invention for improving other performances of product, other auxiliary agents can also be added adaptively, as fire retardant, tinting material, oxidation inhibitor, thermo-stabilizer, photostabilizer, anti-impact modifier and static inhibitor etc.
Concrete, in the present invention:
Described polybutylene terephthalate, English name polybutylene terephthalate, is called for short PBT plastic.
Described polycarbonate, English name: Polycarbonate, being called for short PC plastics, is react by ester-interchange method (or claiming scorification) polycarbonate resin be polymerized by the third diphenol (bisphenol-a) in dihydroxyl compound, the diphenyl carbonate (diphenylcarbonate) in carbonate cpds.。
Described bamboo fibers, can be take bamboo as raw material, squeeze the fibrous byproduct after vinifera palm oil through high temperature, comprise mao bamboon fiber, cizu fiber, lingnania chugii fiber, green bark bamboo fiber, tonkin cane fiber, Punting Pole Bambusa fiber, bamboo fibers can be one in above-mentioned bamboo fiber or its mixture.Also can be bamboo pulp fiber, as Lyocell bamboo fiber.Lyocell bamboo fiber, also known as solvent method bamboo fiber, is a kind of regenerated bamboo fiber adopting Lyocell technique to spin for raw material with bamboo cellulose pulp.
Sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, No. CAS: 65345-34-8, English name: Isopropyl tri (dioctylphosphate) titanate.
N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane, No. CAS: 3069-29-2, English name: 3-(2-Aminoethylamino) propyl-dimethoxymethylsilane.
Glyceryl monostearate, English name: Glyceryl monostearate, No. CAS: 31566-31-1.
β-(4'-hydroxyl-3', 5'-di-tert-butyl-phenyl) propionic acid octadecyl ester, also known as antioxidant 1076, English name: antioxidant1076, molecular formula C
35h
62o
3, molecular weight 530.87.
Two octadecyl pentaerythritol phosphate, Chinese another name: distearyl pentaerythritol diphosphite, antioxidant 618, English name: 3,9-bis (octadecyloxy)-2,4,8,10-tetraoxa-3,9-dipho, No. CAS: 3806-34-6, No. EC: 223-276-6, molecular formula: C
41h
82o
6p
2, molecular weight: 733.0337.
3,3'-thio-2 acid dodecyl ester, Chinese another name: Tyox B, oxidation inhibitor DLTDP, molecular weight: 514.95.
Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille of the present invention, have and higher draw high intensity, flexural strength, modulus in flexure and notched Izod impact strength, the bamboo fibers adopting pure natural is raw material, reduce the usage quantity of plastic raw materials, reduce the cost of product, environmental protection, and there is excellent anti-microbial property.
Embodiment
Specific embodiments of the invention, illustrate the present invention further, these embodiments should be understood only be not used in for explaining the present invention and limit the scope of the invention, after having read the present invention, those skilled in the art have all fallen within the application's claims limited range to various equivalents of the present invention or amendment.
Embodiment 1
Convection oven bamboo fibers being placed in 105 DEG C carries out drying, controls its moisture content at 1wt%.By dried bamboo fibers mechanical disintegration, cross 200 mesh sieves, for subsequent use.
Each raw material is taken according to embodiment 1 data corresponding in table 1.
(1) added in homogenizer by bamboo fibers, then add properties-correcting agent, control temperature of charge 75 DEG C, rotating speed 2500r/min, churning time 8 minutes, obtains modified bamboo fiber;
(2) polybutylene terephthalate, polycarbonate and modified bamboo fiber are added in super mixer stir, rotating speed 700r/min, whipping temp 80 DEG C, churning time 8 minutes; Through twin screw extruder extruding pelletization, extrusion temperature 170 DEG C, screw speed is 120r/min, cooling, obtained plastic grain;
(3) above-mentioned plastic grain is added injection moulding in injection moulding machine, obtained described Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
Table 1: Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille formula table unit: kilogram
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Polybutylene terephthalate | 100 | 100 | 100 | 100 |
| Polycarbonate | 50 | 50 | 50 | 50 |
| Bamboo fibers | 20 | 20 | 20 | 20 |
| Sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester | 0.08 | 0.4 | / | / |
| N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane | 0.12 | / | 0.4 | / |
| Glyceryl monostearate | 0.20 | / | / | 0.4 |
Wherein, in Table 1, polybutylene terephthalate is the PBT GX-121 that Yizheng Chemical Fiber Co., Ltd., SINOPEC produces; Selected polycarbonate is the PC2805 that Dongguan City Dong Yue plastic material company limited produces; Bamboo fibers adopts bamboo difficult to understand in Shanghai Lyocell Fibre Research & Development Co., Ltd.
bamboo fibers, fiber number 2.58dtex.
Embodiment 2-4
Each raw material is taken according to embodiment 2-4 data corresponding in table 1.The method described in embodiment 1 is adopted to prepare described Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille respectively.
Embodiment 5
Convection oven bamboo fibers being placed in 105 DEG C carries out drying, controls its moisture content at 1wt%.By dried bamboo fibers mechanical disintegration, cross 200 mesh sieves, for subsequent use.
Each raw material is taken according to embodiment 5 data corresponding in table 2.
(1) sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane and glyceryl monostearate are mixed, this composite modifier can be obtained; Added in homogenizer by bamboo fibers, then add composite modifier, control temperature of charge 75 DEG C, rotating speed 2500r/min, churning time 8 minutes, obtains modified bamboo fiber;
(2) calcium stearate, triphenyl phosphite and lauric acid dibutyitin maleate are mixed, compound antiaging agent can be obtained; Polybutylene terephthalate, polycarbonate, this compound antiaging agent and modified bamboo fiber are added in super mixer and stirs, rotating speed 700r/min, whipping temp 80 DEG C, churning time 8 minutes; Through twin screw extruder extruding pelletization, extrusion temperature 170 DEG C, screw speed is 120r/min, cooling, obtained plastic grain;
(3) above-mentioned plastic grain is added injection moulding in injection moulding machine, obtained described Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
Table 2: Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille formula table unit: kilogram
| Embodiment 5 | |
| Polybutylene terephthalate | 100 |
| Polycarbonate | 50 |
| Bamboo fibers | 20 |
| Sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester | 0.08 |
| N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane | 0.12 |
| Glyceryl monostearate | 0.20 |
| Calcium stearate | 0.12 |
| Triphenyl phosphite | 0.09 |
| Lauric acid dibutyitin maleate | 0.09 |
Test case 1
Carry out performance test to embodiment 1-4, concrete data are in table 3.
Table 3: Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille performance test table
| Izod notched impact strength, KJ/m 2 | Draw high intensity, Mpa | Modulus in flexure, Mpa | |
| Testing method | GB/T1043.1-2008 | GB/T1040.1-2006 | GB/T9341-2008 |
| Embodiment 1 | 22.3 | 50.9 | 4146 |
| Embodiment 2 | 20.2 | 49.8 | 4038 |
| Embodiment 3 | 20.9 | 50.2 | 4097 |
| Embodiment 4 | 20.7 | 49.6 | 4105 |
The present invention adopts composite modifier to carry out surface modification treatment to bamboo fibers, make the surface active of bamboo fibers, its surface parcel coupling agent and fatty acid ester mix properties-correcting agent, thus improve bamboo fibers and the consistency between polybutylene terephthalate and polycarbonate, improve plasticizing capacity simultaneously, reduce melt viscosity, improve mobility, effectively increase the consistency between system each component and dispersiveness, improve the bonding interface situation of material system, thus every mechanical property is effectively improved.
Test case 2
According to thermo-oxidative ageing experimental standard GB/T7141-2008, artificially roughening (90 DEG C, 500h) is carried out to embodiment 1 and embodiment 5 and comparative example.
Table 4: anti-aging plastic car radiator grille performance test table (90 DEG C, 500h) after artificial accelerated aging
| Stretching strength retentivity, % | Shock strength conservation rate, % | |
| Embodiment 1 | 67.2 | 69.3 |
| Embodiment 5 | 88.9 | 85.4 |
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (4)
1. an Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille, is characterized in that, comprises the component of following weight parts: polybutylene terephthalate 100 parts, polycarbonate 30-70 part, bamboo fibers 15-20 part, properties-correcting agent 0.3-0.4 part; Described properties-correcting agent, is made up of by weight following component: sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester 10-30 part, N-aminoethyl-3-aminopropyltriethoxy dimethoxysilane 20-40 part, glyceryl monostearate 40-60 part.
2. the preparation method of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille as claimed in claim 1, is characterized in that, comprise the steps:
(1) with properties-correcting agent, surface modification treatment is carried out to bamboo fibers, obtain modified bamboo fiber;
(2) polybutylene terephthalate, polycarbonate and modified bamboo fiber are added in super mixer stir, through twin screw extruder extruding pelletization, obtained plastic grain;
(3) above-mentioned plastic grain is added injection moulding in injection moulding machine, obtained described Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille.
3. the preparation method of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille as claimed in claim 2, it is characterized in that, in described step (1), surface modification treatment is: added by bamboo fibers in homogenizer, add properties-correcting agent again, control temperature 70-80 DEG C, rotating speed 2000-3000r/min, churning time 6-10 minute.
4. the preparation method of Environment-friendlybamboo-plastic bamboo-plastic automotive radiator grille as claimed in claim 2, is characterized in that: in described step (2), in super mixer, whipping temp 70-90 DEG C, control rotating speed at 500-800r/min, churning time 5-10 minute; Extrusion temperature 160-190 DEG C in twin screw extruder, screw speed is 80-160r/min.
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| CN105419293B (en) * | 2015-12-24 | 2018-01-26 | 上海锦湖日丽塑料有限公司 | A kind of antibacterial PC/ABS alloy materials and preparation method thereof |
| CN106751558A (en) * | 2016-11-18 | 2017-05-31 | 无锡明盛纺织机械有限公司 | A kind of engineering plastic materials and preparation method containing bamboo fibre |
| CN108485225A (en) * | 2018-04-16 | 2018-09-04 | 合肥欧克斯新型建材有限公司 | A kind of ceiling tile materials capable of purifying air and preparation method thereof |
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| CN112812537A (en) * | 2021-01-04 | 2021-05-18 | 北京汽车集团越野车有限公司 | Injection-molding spraying-free material and vehicle air inlet grille prepared by using same |
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