Aging-resistant composite material for automobiles and method for preparing the same
By combining modified glass fiber and halloysite nanotubes, the problem of insufficient aging resistance of polypropylene materials in automotive applications was solved, and the stability under thermal-oxidative and photo-oxidative aging environments was improved, thus constructing a multi-layered antioxidant protection system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHIYAN BOXING AUTOMOBILE DECORATIVE PROD
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing polypropylene materials have insufficient aging resistance in automotive applications, especially under ultraviolet light and heat-oxidation environments, where they are prone to aging. Furthermore, existing reinforcing agents and antioxidants suffer from migration, precipitation, and volatilization losses.
Modified glass fiber and modified halloysite nanotubes are composited with polypropylene. Epoxy groups are introduced onto the surface of the glass fiber by treatment with γ-glycidoxypropyltrimethoxysilane, and then covalently grafted with 4-amino-2,2,6,6-tetramethylpiperidine. The modified halloysite nanotubes are then aminated with γ-aminopropyltriethoxysilane and then grafted with lipoic acid and syringic acid using a DCC/DMAP activation system to form covalent bonds that fix functional molecules, achieving multiple antioxidant protections.
It improves the mechanical properties and aging resistance of composite materials, especially their stability under thermo-oxidative and photo-oxidative aging environments, avoids the migration and volatilization of functional molecules, and constructs a comprehensive protection system covering different aging causes.
Smart Images
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