An impact-resistant, scratch-resistant automotive wheel cover and method of making the same

By using a composite material of nylon 6 resin and modified fiber to form a cross-linked network, the problems of nylon-based automotive wheel hubcaps being poorly scratch-resistant, impact-resistant, and deteriorating due to moisture absorption are solved, achieving high impact resistance and scratch resistance, and improving dimensional stability.

CN121108731BActive Publication Date: 2026-06-26ZHEJIANG STARCO HUANMEI AUTO-PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG STARCO HUANMEI AUTO-PARTS CO LTD
Filing Date
2025-10-20
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing nylon-based car wheel covers are not scratch-resistant, not impact-resistant, and absorb moisture, which degrades their performance.

Method used

A composite material consisting of nylon 6 resin, bismaleimide resin prepolymer, hydrogenated styrene-butadiene block copolymer grafted with maleic anhydride, modified basalt fiber, and modified polyaryl ester fiber is formed through chemical reaction and modification treatment to create a cross-linked network, thereby improving the material's impact resistance, scratch resistance, and dimensional stability.

Benefits of technology

It significantly improves the impact resistance, scratch resistance and dimensional stability of automotive wheel hubcaps, enabling them to be used for a long time in complex and harsh environments.

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Abstract

The application discloses an anti-impact and anti-scratching automobile hub cover and a preparation method thereof, and relates to the technical field of high polymer materials.The automobile hub cover comprises at least: 100 parts of nylon 6 resin; 5-15 parts of bismaleimide resin prepolymer; 10-15 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride; 10-20 parts of modified basalt fiber; 5-15 parts of modified polyarylate fiber; 0.2-0.5 parts of antioxidant; 0.3-0.8 parts of light stabilizer; 2-4 parts of color master batch; 0.3-0.8 parts of lubricant; the bismaleimide resin prepolymer is prepared by mixing 4,4'-diphenylmethane bismaleimide and 2,2'-diallyl bisphenol A; the modified basalt fiber is co-precipitated and modified by polydopamine, polyethyleneimine and octaamino cage-shaped polyhedral oligomeric silsesquioxane functionalized graphene oxide; and the modified polyarylate fiber is co-precipitated and modified by polydopamine and polyethyleneimine.The automobile hub cover prepared by the application has low moisture absorption, high impact resistance and excellent scratch resistance.
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