Composite master batch based on recycled cloth and preparation method and application thereof

By melting and granulating recycled composite fiber fabric with virgin resin, and combining maleic anhydride graft compatibilizer and halogen-free phosphorus-nitrogen flame retardant, the problem of insufficient mechanical and flame retardant properties of composite masterbatch is solved, realizing efficient resource utilization and environmentally friendly production, which is suitable for engineering plastics and automotive interiors.

CN122213624APending Publication Date: 2026-06-16HONGYU TEXTILE ZHEJIANG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HONGYU TEXTILE ZHEJIANG CO LTD
Filing Date
2026-03-31
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing composite masterbatches based on recycled fabrics have insufficient mechanical properties, poor flame retardancy, and are not environmentally friendly in their preparation methods, making it difficult to meet the application requirements of high-end modified plastics and functional fibers.

Method used

Composite masterbatch is prepared by melt blending and granulation of recycled composite fiber fabric with virgin resin, maleic anhydride graft compatibilizer, toughening elastomer and halogen-free phosphorus-nitrogen flame retardant. This ensures that the recycled material and virgin resin have the same polymer matrix. The maleic anhydride graft compatibilizer improves the interfacial adhesion, the toughening agent improves the impact strength, and the phosphorus-nitrogen flame retardant forms a dense char layer to achieve flame retardancy.

Benefits of technology

The prepared composite masterbatch has excellent mechanical properties, good processing flowability, and efficient and stable flame retardant properties, which reduces production costs and realizes efficient recycling and resource utilization of waste textiles. It is suitable for engineering plastics, automotive interiors and other fields.

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Abstract

The application discloses a composite master batch based on recycled cloth and a preparation method and application thereof, and relates to the technical field of high polymer chemistry. The preparation method of the composite master batch based on recycled cloth comprises the following steps: after the recycled composite fiber cloth is crushed and impurities are removed, recycled cloth fragments are obtained; the recycled cloth fragments, virgin resin, maleic anhydride grafting compatilizer, toughening elastomer, halogen-free phosphorus-nitrogen flame retardant and processing aid are mixed and then added into a double-screw extruder for melt blending to obtain an extruded strip; and the extruded strip is water-cooled, air-dried and granulated to obtain the composite master batch. The composite master batch prepared based on the recycled cloth has excellent mechanical properties, good processing fluidity, outstanding interfacial compatibility and high-efficiency and stable flame-retardant performance, and can be directly applied to the preparation of engineering plastics.
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