Low-odor reinforced polypropylene composite material and preparation method thereof

By using a full-process low-odor control system, homopolymer polypropylene, PP-g-GMA and composite adsorbents, the odor problem of polypropylene composite materials in automotive interiors is solved, achieving efficient odor removal while maintaining material performance, and is suitable for automotive interior parts.

CN121758862APending Publication Date: 2026-03-31CHONGQING ORINKO TECH CO LTD CHINA
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Patent Information

Application Number
CN202512031146.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing polypropylene composite materials have problems with volatile organic compounds (VOCs) and irritating odors in the automotive interior field, and existing synergistic solutions are difficult to achieve both deep deodorization and maintaining the high strength and toughness of the material.

Method used

The entire process of "source reduction - process adsorption/catalysis - deep desorption" is adopted. By using homopolymer polypropylene, PP-g-GMA compatibilizer and composite adsorbent (attapulgite, 13X molecular sieve and cerium oxide), combined with glass fiber surface purification, melt two-stage vacuum devolatilization and high-temperature dynamic post-treatment of particles, a low-odor control system is formed.

Benefits of technology

Significantly reduces material odor while maintaining high strength and toughness, meeting the odor and VOCs standards for automotive interior materials, suitable for components such as dashboard frames.

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Abstract

The invention discloses a low-odor reinforced polypropylene composite material and a preparation method thereof. The low-odor reinforced polypropylene composite material is prepared from 55-90 parts by weight of polypropylene resin, 5-40 parts by weight of glass fibers, 2-5 parts by weight of polypropylene grafted glycidyl methacrylate, 0.5-3 parts by weight of a composite adsorbent and 0.5-2 parts by weight of other auxiliary agents. Wherein the composite adsorbent is formed by compounding an inorganic carrier with an adsorption function and an organic component with an adsorption or catalytic conversion function. Through a whole-process solution integrating'source reduction-process adsorption / catalysis-deep desorption ', the odor and the VOCs content of the glass fiber reinforced polypropylene composite material are remarkably reduced, and meanwhile, the core mechanical properties of high strength and high toughness of the glass fiber reinforced polypropylene composite material are completely kept.
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