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Method for preparing metal-luster vehicle bumpers

A technology for automotive bumpers and metallic luster, applied to bumpers and other directions, can solve the problems of long-term use, difficult painting process, low coating adhesion, etc., and achieves not easy to fall off, excellent light aging resistance, and short molding cycle Effect

Inactive Publication Date: 2012-10-24
CHONGQING CHUANGLONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the disadvantages of low coating adhesion, easy to fall off, poor wear resistance, and inability to use for a long time, and this method of coating coatings needs to use different coatings for different plastic substrates. Potentially worse, and more difficult painting process for irregularly shaped car bumper surfaces, and not environmentally friendly

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The preparation method of the metallic luster automobile bumper of the present invention,

[0016] The first step, calculated by weight, 71 parts of PP, 12 parts of metallocene ethylene-hexene copolymer, 1 part of aluminum powder, 8 parts of POE, 1 part of aluminum powder and 6 parts of nano calcium carbonate, 0.6 part of antioxidant. , 0.4 part of ethylene bis-stearamide is fully mixed in the mixer to obtain mixture A;

[0017] In the second step, the mixture A obtained in step 1 is added to the twin-screw extruder for kneading. The temperature of the twin-screw extruder is set between 170°C and 220°C. The residence time is 3~8min, and the speed of the twin-screw extruder is 300~350r / min;

[0018] In the third step, the material obtained in the second step is extruded and then cooled and pelletized to obtain composite material particles B for automobile bumpers;

[0019] In the fourth step, the composite material particles B obtained in the third step are added to an...

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Abstract

The invention relates to a method for preparing metal-luster vehicle bumpers. Raw materirals of the method comprise, by weight, 71 parts of propene polymer (PP), 12 parts of metallocene polyethylene-hexene copolymer, 1 part of aluminum powder, 8 parts of polyolefin elastomer (POE), 1 part of aluminum powder and 6 parts of nano calcium carbonate, 0.6 part of oxidation inhibitor and 0.4 part of ethylene bis stearamide which are fully mixed in a mixer to obtain a mixture A. According to the method for preparing metal-luster vehicle bumpers, the aluminum powder is added into the PP to be mixed together, and the two serve as materials to be used for preparing vehicle bumpers, so that spray coating is not needed to be performed on surfaces of the vehicle bumpers and the surfaces are provided with metallic luster. As the method technology has metallic effects and the advantages of being short in molding cycle, high in production efficiency, light in weight, not easy to fall off, good in abrasion resistance and the like, the processing step of paint spraying in the production process of vehicle bumpers is saved, the production process is simplified, the production cost is reduced dramatically, the method is easy to implement, and the use effect is good.

Description

technical field [0001] The invention relates to a formula and a production process of a plastic material, in particular to a preparation method of an automobile bumper with metallic luster. Background technique [0002] Automobile bumper is a relatively important large-scale component in the automobile industry. Its use environment requires the material to have excellent high and low temperature impact toughness, rigidity, aging resistance, heat resistance, cold resistance, and also have properties such as poise resistance, lubricating oil, paint and so on. The most important thing is to have high impact toughness and good forming performance. [0003] In automotive painting, the color of the topcoat can be divided into two categories: natural color and metallic color. According to its color, the natural color can be divided into chromatic and achromatic. Metallic colors can also be subdivided into metallic flash colors and pearlescent colors, and have a tendency to be co...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L23/20C08K13/02C08K3/26C08K3/08C08K5/20B29C47/92B60R19/03B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 陈振丰
Owner CHONGQING CHUANGLONG IND
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