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HP-RTM technology based method for molding automobile surface external decorative parts

An HP-RTM, automotive surface technology, which is applied in the field of automotive surface exterior trim parts formed by HP-RTM process, can solve the problems of high porosity, low production efficiency, and reduce production costs, so as to reduce porosity, improve accuracy, and reduce The effect of production costs

Inactive Publication Date: 2012-02-15
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of low production efficiency, low product precision and high porosity in the current RTM molding of automotive exterior parts, the purpose of the present invention is to provide a method for forming automotive surface exterior parts by HP-RTM process. High-pressure resin transfer molding process is used to form automotive surface exterior parts, which improves the precision of the product, reduces the porosity of the product, and highly automated operation reduces the production cost

Method used

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  • HP-RTM technology based method for molding automobile surface external decorative parts
  • HP-RTM technology based method for molding automobile surface external decorative parts

Examples

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Embodiment 1

[0017] A kind of method of HP-RTM process molding automobile surface exterior trim, see figure 1 , the method uses vinyl resin as a matrix, carbon fiber as a reinforcement, adding a flame retardant and an antistatic agent, and adopts a high-pressure resin transfer molding process to form an automotive surface exterior trim. The specific steps are as follows:

[0018] Prepare a certain amount of vinyl resin (purchased from DSM Co., Ltd.), use 7% aluminum hydroxide as a flame retardant according to the mass of the matrix resin, and use 7% of the mass of the matrix resin as octadecyl dimethyl hydroxyethyl quaternary Ammonium nitrate is used as an antistatic agent, and the matrix, flame retardant, and antistatic agent are uniformly mixed to obtain the first resin system. In addition, methyl ethyl ketone peroxide (purchased from Baling Petrochemical Company Reagent Factory) and FR-32 polymerization inhibitor (purchased from Shanghai Unite Co., Ltd.) were prepared. The mass ratio...

Embodiment 2

[0020] Another HP-RTM method for forming automotive surface exterior parts. The method uses epoxy resin as a matrix, carbon fiber as a reinforcement, adding flame retardants and antistatic agents, and adopts a high-pressure resin transfer molding process to form automotive surfaces. Exterior parts, the specific steps are as follows:

[0021] Prepare a certain amount of epoxy resin, use 5% aluminum hydroxide as a flame retardant according to the mass of the matrix resin, and use 5% octadecyldimethylhydroxyethyl quaternary ammonium nitrate as an antistatic agent according to the mass of the matrix resin , uniformly mixing the matrix, the flame retardant, and the antistatic agent to obtain the first resin system. In addition, methyl ethyl ketone peroxide (purchased from Baling Petrochemical Company Reagent Factory) and FR-32 polymerization inhibitor (purchased from Shanghai Unite Co., Ltd.) were prepared. The mass ratio of the first resin system, methyl ethyl ketone peroxide, an...

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Abstract

The invention discloses an HP-RTM technology based method for molding automobile surface external decorative parts. Matrixes of epoxy resin, phenolic resin or vinyl resin and a reinforcement of carbon fiber are added with fire retardant and antistatic agent; and a high pressure resin transfer molding technology is employed to mold automobile surface external decorative parts. The method comprises steps of: mixing well the matrixes, the fire retardant and the antistatic agent to obtain a first resin system; mixing the first resin system and methylethyl ketone peroxide in a mass ratio of 100:0.5-1 to obtain a second resin system; placing pre-molded reinforcement of carbon fiber in a die, injecting the well mixed second resin system into a mould cavity by the high pressure resin transfer molding technology to dip the reinforcement of carbon fiber with the resin system; solidifying and demoulding to obtain a product. The method of the invention enhances size precision of the product, lowers amount of porosity of the product and reduces production costs through high degree of automation.

Description

technical field [0001] The invention relates to a molding method of an automobile surface exterior decoration, in particular to a method for forming an automobile surface exterior decoration by HP-RTM technology. Background technique [0002] Resin transfer molding RTM (Resin Transfer Molding) is the most widely used process in the processing of resin matrix composite materials. It originated from the cold mold casting process in the 1950s and was developed to adapt to the molding of aircraft radomes. Although the cost of the RTM process is low, it has high technical requirements, especially for raw materials and molds, and problems such as difficulty in exhausting air bubbles, poor fiber wettability, and dead angles in resin flow were not well resolved, so it was not possible at that time. Mass promotion. Beginning in the early 1990s, there was a climax of RTM technology and theoretical research, and RTM equipment, resin and mold technology were becoming more and more...

Claims

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Application Information

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IPC IPC(8): B29C70/48B29C70/54C08L63/00C08L61/06C08L101/02C08K13/04C08K7/06
Inventor 鲁平才阮诗平
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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