A modified graphene health function sponge composition, sponge and chain type continuous preparation method and application thereof

By using a modified graphene-based composition for functional sponges and a chain-type continuous foaming process, a continuous three-dimensional conductive network is constructed, solving the performance deficiencies of traditional polyurethane sponges and the preparation challenges of existing graphene-modified sponges. This achieves efficient multifunctional integration and industrialized production, meeting the application needs of high-end fields.

CN122168001APending Publication Date: 2026-06-09SHANTOU JIYUANHUA WEAVING IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANTOU JIYUANHUA WEAVING IND CO LTD
Filing Date
2026-05-08
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional polyurethane foam lacks conductivity, antistatic properties, and antibacterial properties, and is not environmentally friendly. Existing graphene-modified polyurethane foam is difficult to integrate multiple functions, and the preparation process cannot meet the needs of large-scale continuous industrial production.

Method used

A modified graphene-modified functional sponge composition is used, comprising carboxyl-terminated polylactic acid-modified few-layer graphene, environmentally friendly foaming agent, crosslinking agent, organotin catalyst, silane coupling agent, and health additives. Through chain-type continuous foaming and multi-level gradient curing processes, a continuous three-dimensional conductive network is constructed, achieving a simultaneous leap in conductivity, antibacterial properties, degradation properties, and fatigue resistance.

Benefits of technology

The sponge has stable conductivity, antibacterial rate ≥94.5%, mite removal rate ≥92.3%, permanent compression deformation ≤3%, 180-day degradation rate ≥35%, and conductivity attenuation ≤4%, meeting the biosafety standards of high-end fields.

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Abstract

This invention discloses a modified graphene-modified functional sponge composition, the sponge itself, and its chain-like continuous preparation method and applications. It relates to the field of polymer functional composite materials technology and solves the problems of poor conductivity, antistatic properties, antibacterial and anti-mite performance, low mechanical strength, large compression set, non-degradability, and discontinuous production of polyurethane sponges in existing technologies. The composition comprises, by weight, 100 parts polyurethane prepolymer, 3-10 parts modified graphene, 1-4 parts environmentally friendly foaming agent, 0.5-3 parts crosslinking agent, 0.1-1.5 parts organotin catalyst, 0.5-2 parts silane coupling agent, 0.2-2 parts health additives, 0.1-0.8 parts stabilizer, and 2-6 parts water; wherein the modified graphene is carboxyl-terminated polylactic acid-modified few-layer graphene. The sponge prepared using this composition achieves simultaneous improvement in conductivity, antibacterial properties, degradability, mechanical properties, and fatigue resistance.
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Citation Information

Patent Citations

  • Preparation method of polylactic acid functionalized graphene

    CN103086367A

  • Flame-retardant graphene polyurethane composite sponge material and preparation method thereof

    CN118146565A

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