A full life cycle low-emission polypropylene composite material and a preparation method and application thereof

By adding a reactive trap containing oxazoline functional groups and an aqueous solution of surfactant to polypropylene composites, the problem of volatile substance release during the life cycle of polypropylene composites is solved, achieving ultra-low VOC release and odor throughout the entire life cycle, making it suitable for automotive interior parts, home appliances and medical and health devices.

CN122502764APending Publication Date: 2026-08-04GUANGZHOU SUPER DRAGON ENG PLASTICS +1
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Patent Information

Application Number
CN202610666257.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing polypropylene composite materials continuously release volatile substances such as small molecule aldehydes, ketones, carboxylic acids, and hydrocarbons during production, use, and even throughout their entire life cycle, failing to meet the low emission requirements of the automotive healthy cabin concept.

Method used

A method combining a reactive trap containing an oxazoline functional group with an aqueous surfactant solution is employed to fix small molecule volatiles through irreversible chemical reactions and enhance physical removal during processing, forming a stable macromolecular structure. The surfactant aqueous solution reduces the surface tension of water during melt extrusion, promoting the migration and removal of small molecule volatiles.

Benefits of technology

It achieves ultra-low VOC release and odor throughout its entire life cycle, exhibits excellent mechanical properties, has a simple manufacturing process, and low production costs, making it suitable for automotive interior parts, home appliances, and medical and health devices.

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Abstract

The application discloses a full-life-cycle low-emission polypropylene composite material and a preparation method and application thereof. The full-life-cycle low-emission polypropylene composite material comprises the following components in percentage by mass: polypropylene: 65-75%; polyolefin elastomer: 5-15%; inorganic filler: 15-25%; reactive trapping agent containing an oxazoline functional group: 0.1-0.5%; and other auxiliaries: 0.5-5%. The full-life-cycle low-emission polypropylene composite material can keep ultra-low VOC emission and odor in the full life cycle, has excellent mechanical properties, is simple in preparation process, low in production cost, green and environment-friendly, and is suitable for being used for preparing automobile interior parts, household appliances, medical and health equipment and other products with high requirements on VOC emission and odor.
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