PP / PA composite material for automobile front end module and preparation method thereof

By improving the wetting adhesion and heat resistance of PP/PA composite materials, the problems of insufficient strength and poor low-temperature toughness in automotive front-end modules have been solved, realizing a high-strength, high-toughness, and high-temperature resistant composite material suitable for the integration and lightweighting of automotive front-end modules.

CN121873475BActive Publication Date: 2026-05-29ZHEJIANG BOYI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG BOYI TECH CO LTD
Filing Date
2026-03-20
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing PP/PA composite materials used in automotive front-end modules suffer from insufficient strength, poor low-temperature toughness, and easy deformation at high temperatures. Furthermore, the poor wetting and adhesion between long glass fibers and the matrix resin prevents a significant improvement in the mechanical properties of the composite materials.

Method used

By introducing tackifying resin, fumed silica, organic-inorganic hybrid heat-resistant agent and ethylene-butyl acrylate copolymer into the PP/PA resin system, the polarity of the resin and the wetting and adhesion of the glass fiber are improved. N-phenylmaleimide and nano-montmorillonite are used to enhance the heat resistance and low-temperature impact strength of the material and prevent the glass fiber from being sheared and shortened.

Benefits of technology

A high-strength, high-toughness, and high-temperature resistant PP/PA composite material has been developed, which can effectively improve the impact resistance and heat resistance of automotive front-end modules, meeting the needs of vehicle lightweighting and integration.

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Abstract

The application belongs to the technical field of high polymer materials, and discloses a PP / PA composite material for an automobile front end module and a preparation method thereof. By introducing tackifying resin and fumed silica into a PP / PA resin system to improve polarity, the PP / PA can be fully infiltrated and bonded when impregnated with long glass fibers, better wrap the glass fibers, form a close combination, improve the strength of the composite material, and prevent fiber floating. By introducing an organic-inorganic hybrid heat-resistant agent, the heat aging resistance of the composite material is enhanced. By introducing ethylene-butyl acrylate copolymer, the butyl acrylate ductile segment is used to prevent the glass fibers from being excessively shortened during injection molding processing, and good rigidity, strength and impact toughness are ensured. The obtained PP / PA composite material can provide sufficient tensile strength, impact toughness and high temperature resistance in terms of impact resistance, vibration resistance and heat dissipation when used in the automobile front end module, and promotes the wide application of the material in the lightweight automobile front end module.
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