PVC (Polyvinyl Chloride) composite foaming material for automotive trim and preparation method of PVC composite foaming material

By adding isocyanates and acid anhydride compounds to polyvinyl chloride resin, an imide and polyurea hybrid network is constructed, solving the problems of processing difficulty and performance deficiencies of foam materials for automotive interiors, and realizing a high-strength, heat-resistant, and flame-retardant PVC composite foam material.

CN121914489APending Publication Date: 2026-04-24JIA XING YANG HSIN MASCH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIA XING YANG HSIN MASCH CO LTD
Filing Date
2026-03-06
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing foam materials for automotive interiors suffer from problems such as easy aging after long-term use, large compression deformation, and high processing difficulty, especially polyvinyl chloride materials which are difficult to process in high-filler systems.

Method used

Using polyvinyl chloride as the base resin, isocyanate compounds and acid anhydride compounds are added. An imide network is constructed through melt blending and high-temperature molding. Combined with supercritical CO2 physical foaming and water vapor wet curing, a PVC composite foam material with an imide and polyurea hybrid network is formed.

Benefits of technology

It improves the material's processing rheology, cell structure and morphology, and enhances its mechanical properties, thermal stability and flame retardancy, making it suitable for automotive interiors and high-end equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure SMS_1
    Figure SMS_1
  • Figure SMS_2
    Figure SMS_2
Patent Text Reader

Abstract

The invention discloses a PVC (polyvinyl chloride) composite foam material for automotive interiors and a preparation method thereof, and relates to the technical field of foam materials, the PVC composite foam material is obtained by melt blending, high-temperature mould pressing, supercritical CO2 physical foaming and moisture curing of polyvinyl chloride resin, an isocyanate compound, an anhydride compound, an inorganic filler, a plasticizer and a foaming regulator. According to the invention, polyvinyl chloride is taken as a basic resin component, an isocyanate compound and an anhydride compound are added, and an imide network is constructed through melt blending and high-temperature mold pressing, so that the melt elasticity and strength are improved, the processability is improved, and the improvement of the cellular structure and form in the subsequent physical foaming process is promoted; and in the subsequent moisture curing process, ureido is formed, and rigid-flexible hybrid resin is further constructed, so that the mechanical property, heat-resistant stability and flame retardant property of the prepared PVC foaming composite material are improved.
Need to check novelty before this filing date? Find Prior Art