A method for preparing a low odor automotive wrap material

By introducing COF/MOF composite porous adsorbents into automotive coating materials and performing surface treatment, the problems of easy shedding of traditional adsorbents and odor emission at high temperatures have been solved, realizing the preparation of coating materials with low odor and high strength, which are suitable for mass production of automotive interior parts.

CN122354052APending Publication Date: 2026-07-10CHINA FAW CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA FAW CO LTD
Filing Date
2026-05-25
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing automotive cladding materials easily release volatile substances at high temperatures. Traditional adsorbents are prone to falling off and cannot maintain a low odor for a long time, affecting the air quality inside the vehicle and the mechanical properties of the materials.

Method used

COF/MOF composite porous adsorbent is used as the functional bottom layer. It is evenly distributed in the bottom substrate by impregnation, coating or hot pressing. Combined with plasma or flame surface treatment, the adhesion and adsorption effect are improved and the odor emission is reduced.

Benefits of technology

It effectively reduces the VOC emission of automotive covering materials, maintains the mechanical strength and heat aging resistance of the materials, and ensures that no secondary odor is released under high temperature conditions, making it suitable for mass production of automotive interior parts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of automobile coating materials, and discloses a preparation method of a low-odor automobile coating material, which comprises the following steps: cutting a surface layer, a core layer and a functional bottom layer loaded with a COF / MOF composite porous adsorbent according to preset sizes; placing the core layer material after cutting and drying into a mold for hot pressing to obtain a formed and cooled core layer; uniformly applying an adhesive after surface treatment of the core layer; laying the surface layer and the functional bottom layer on the surface of the core layer, and performing hot pressing and integrated molding, and finally cooling and trimming to obtain a finished product. Through the introduction of the functional bottom layer loaded with the porous adsorbent, the core layer cutting and drying and the surface treatment process are combined, the volatile substances are reduced from the source, and the amount of the adhesive is reduced. The method can effectively adsorb and intercept small volatile organic molecules, reduce the VOC release amount and the odor level of the material, and ensure the high bonding force between the layers.
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