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Automobile protection rod formed by polyethylene blowing and surface coating method thereof

A blow molding and surface coating technology, which is applied to the device for coating liquid on the surface, pretreatment surface, coating and other directions, can solve the problems of high material cost of the bumper, poor impact resistance and buffering performance, and high comprehensive processing cost. , to achieve the effect of easy recycling, good shock resistance and cushioning performance, and light weight

Inactive Publication Date: 2016-02-03
WINBO DONGJIAN AUTOMOTIVE TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The cost of materials used in the protective bar is relatively high, and the molding performance for hollow blow molding is poor, and the comprehensive processing cost is high;
[0004] 2. The material is more brittle after hollow forming, fragile in collision, and has poor impact resistance and cushioning performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The utility model relates to a protective bumper for automobiles formed by polyethylene blow molding, which comprises an integrated bumper body formed by hollow blow molding of polyethylene, and the surface of the bumper body is coated with a decorative layer.

[0025] The automobile protective bumper adopts polyethylene hollow blow molding, the material has good fluidity, is easy to form, and the leftover materials are easy to recycle and reuse, and the cost is low.

[0026] The car bumper density is low (0.94g / cm 3 ), with lighter weight and better impact resistance and cushioning properties,

[0027] The automobile protective bar is molded by one-time polyethylene blow molding, and the structure is integrated, which effectively reduces the parts on the bar body and simplifies the assembly process of the automobile protective bar.

[0028] The decorative layer is coated on the surface of the plastic main body of the protective bar, which endows the protective bar wit...

Embodiment 2

[0030] A kind of surface coating method of automobile protective bar, this automobile protective bar is as described in embodiment 1, comprises the following steps:

[0031] (1) Surface treatment: use an ordinary liquefied gas torch, and keep the flame treatment head at 20 cm above the plastic surface to cover, because this distance can make the extension of the flame contact the plastic surface, making it reach a high temperature of 1000 degrees Celsius instantly, with about The speed of 0.1 m / s evenly activates the surface of the product. Flame treatment must ensure that all surfaces to be painted are covered, and it is best not to have repeated phenomena, because repeated burning will destroy the polar molecular groups formed on the plastic surface and cause overburning. Finished products can be left for up to a week before painting. The above-mentioned method of high-temperature flame treatment of polyethylene material can oxidize and activate the surface of the material,...

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Abstract

The invention relates to the technical field of automobiles and discloses an automobile protection rod formed by polyethylene blowing and a surface coating method thereof. The automobile protection rod comprises an integrated rod body formed by hollow polyethylene blowing. The rod body is coated with a decoration layer. The surface coating method of the automobile protection rod comprises the steps of (1) surface treatment; (2) priming paint spraying; (3) finishing paint spraying. In the surface treatment step, a flame gun is adopted for carrying out activating treatment on the surface of the rod body, the temperature of a flame treating head of the flame gun is 1000 DEG C, and the moving speed of the flame treating head is 0.1 m / s. By adopting hollow polyethylene blowing formation, the mobility is good, formation is easy, the cost is low, the weight is lighter, the shock resistance and buffer performance is good, the structure is integrated, the number of parts on the rod body is effectively reduced, and the assembly process of the automobile protection rod is simplified. In addition, the rod body undergoes surface treatment in advance, so that the problem that the surface coating performance of polyethylene material is poor is solved, and the automobile protection rod is customizable in appearance and good in surface weather resistance.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a polyethylene blow molding automobile protective bumper and a surface coating method thereof. Background technique [0002] At present, the main body of the car bumper assembled by many vehicles on the market is mostly made of acrylonitrile-butadiene-styrene copolymer (density 1.05g / cm3) hollow blow molding, and its disadvantages are as follows: [0003] 1. The cost of materials used in the protective bar is relatively high, and the molding performance for hollow blow molding is poor, and the comprehensive processing cost is high; [0004] 2. The material is more brittle after hollow forming, fragile on impact, and has poor impact resistance and cushioning performance. [0005] The invention uses polyethylene hollow blow molding to prepare automobile protective bars, which is lighter in weight, and the material has better shock resistance and buffer performance, and focuses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/03B05D1/36B05D3/08
CPCB60R19/03B05D1/36B05D3/08
Inventor 邓世科唐杰
Owner WINBO DONGJIAN AUTOMOTIVE TECHNOLOGY CO LTD
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