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Free-spraying bumper material for automobiles and preparation method thereof

A spray-free, bumper technology, applied in the field of materials, can solve the problems of easy scratches or scratches on the surface of products, easy dents of thick-walled products, and discoloration of products due to aging. impact effect

Inactive Publication Date: 2015-05-20
合肥江淮毅昌汽车饰件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Good formability, but due to large shrinkage, thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy. The surface of the product has good gloss and is easy to color
[0003] At present, automobile bumpers are generally sprayed parts, but with the rapid development of the automobile industry in recent years, environmentally friendly bumpers (skin texture treatment on bumpers) have been vigorously developed, which requires that the materials used in automobile bumpers be put forward Higher requirements, if the surface of the usual bumper material is not sprayed, it may cause the product to age and change color after a period of use, and the surface of the product is also easily scratched or scratched

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An automobile spray-free bumper material, the composition and weight ratio of which are as follows: 1 part of polycarbodiimide, 0.5 part of benzotriazole, 92 parts of random copolymerized polypropylene, and 0.6 part of trichloroisocyanuric acid , 1 part of manganese sulfate, 2 parts of epoxy octyl stearate, 3 parts of polyamide wax micropowder, 1 part of boron oxide, 0.4 part of hexabromocyclododecane, 2 parts of calcium fluoride, 3 parts of additives, antioxidant 0.5 part of 1010, 10 parts of calcined kaolin, 1 part of potassium zirconium carbonate, 2 parts of conch shell powder.

[0023] The components and parts by weight of the auxiliary agent are as follows: 3 parts of cooked high alumina powder, 5 parts of isooctyl acrylate, 0.6 part of diisocyanate, 20 parts of maleic rosin, 0.5 part of nitrilotriacetic acid, 28% 40 parts of ammonia water and 0.1 part of trimethylolpropane.

[0024] The preparation method of described auxiliary agent comprises the following steps...

Embodiment 2

[0035] A paint-free bumper material for automobiles, the composition and weight ratio of which are as follows: 1-2 parts of polycarbodiimide, 0.7 parts of benzotriazole, 99 parts of random copolymerized polypropylene, trichloroisocyanuric acid 0.8 parts, 1.2 parts of manganese sulfate, 2.5 parts of epoxy octyl stearate, 3.5 parts of polyamide wax micropowder, 1.5 parts of boron oxide, 0.7 parts of hexabromocyclododecane, 2.5 parts of calcium fluoride, 3.5 parts of additives, 0.7 parts of oxygen agent 1010, 15 parts of calcined kaolin, 1.5 parts of potassium zirconium carbonate, and 2.5 parts of conch shell powder.

[0036] The components and parts by weight of the auxiliary agent are as follows: 3.5 parts of cooked high alumina powder, 6 parts of isooctyl acrylate, 0.7 part of diisocyanate, 23 parts of maleic rosin, 0.9 part of nitrilotriacetic acid, 28% 45 parts of ammonia water and 0.3 parts of trimethylolpropane.

[0037] The preparation method of described auxiliary agent...

Embodiment 3

[0048] A paint-free bumper material for automobiles, the composition and weight ratio of which are as follows: 2 parts of polycarbodiimide, 1 part of benzotriazole, 100 parts of random copolymerized polypropylene, and 1 part of trichloroisocyanuric acid , 1.5 parts of manganese sulfate, 3 parts of epoxy octyl stearate, 4 parts of polyamide wax micropowder, 2 parts of boron oxide, 1 part of hexabromocyclododecane, 3 parts of calcium fluoride, 5 parts of additives, antioxidant 1 part of 1010, 20 parts of calcined kaolin, 2 parts of potassium zirconium carbonate, 3 parts of conch shell powder.

[0049] The components and parts by weight of the auxiliary agent are as follows: 5 parts of cooked high alumina powder, 7 parts of isooctyl acrylate, 1 part of diisocyanate, 26 parts of maleic rosin, 1 part of nitrilotriacetic acid, 28% 50 parts of ammonia water and 0.4 parts of trimethylolpropane.

[0050] The preparation method of described auxiliary agent comprises the following steps...

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PUM

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Abstract

The invention discloses a free-spraying bumper material for automobiles. The free-spraying bumper material comprises the following components in parts by weight: 1-2 parts of carbodiimide, 0.5-1 part of benzotriazole, 92-100 parts of polypropylene random copolymer, 0.6-1 part of trichloroisocyanuric acid, 1-1.5 parts of manganese sulfate, 2-3 parts of 2-ethylhexyl epoxystearate, 3-4 parts of polyamide wax micromist, 1-2 parts of boric oxide, 0.4-1 part of hexabromocyclododecane, 2-3 parts of calcium fluoride, 3-5 parts of auxiliaries, 0.5-1 part of antioxygen1010, 10-20 parts of calcined kaolin, 1-2 parts of potassium zirconium carbonate and 2-3 parts of trumpet shell powder. The pumper material has good machinability, is spraying-free and is capable of effectively adsorbing and buffering external impact and ensuring the safety of front and rear parts of an automobile due to high surface strength. In addition, the bumper material disclosed by the invention is lightweight, good in rigidity and high in safety.

Description

technical field [0001] The invention mainly relates to the field of materials, in particular to an automobile spray-free bumper material and a preparation method thereof. Background technique [0002] Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer, and it is one of the lightest varieties of all plastics. It is particularly stable to water, with a water absorption rate of only 0.01% and a molecular weight of about 80,000 to 150,000. Good formability, but due to large shrinkage, thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy. The surface of the product has good gloss and is easy to color. [0003] At present, automobile bumpers are generally sprayed parts, but with the rapid development of the automobile industry in recent years, environmentally friendly bumpers (skin texture treatment on bumpers) have been vigorously developed, which requires that the ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L77/00C08L79/00C08K13/06C08K9/04C08K3/08C08K5/3475C08K5/3492C08K3/30C08K5/1515C08K3/38C08K5/02C08K3/16C08K3/34C08K3/26
CPCC08L23/14C08L2201/08C08L2205/03C08L77/00C08L79/00C08K13/06C08K9/04C08K2003/0812C08K5/3475C08K5/34924C08K2003/3045C08K5/1515C08K3/38C08K5/02C08K2003/162C08K3/346C08K3/26
Inventor 周正宇江涛朱余雷
Owner 合肥江淮毅昌汽车饰件有限公司