Wear-resistant tpu material for making shoe soles and method for preparing the same

By adding modified porous corundum to TPU material, the problems of wear resistance and mechanical properties of TPU shoe sole material are solved by combining the hard skeleton of corundum with the flexible PCL chain, and a balance between wear resistance and elasticity of the material is achieved.

CN122404653APending Publication Date: 2026-07-17CHENG DA VI TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENG DA VI TECHNOLOGY CO LTD
Filing Date
2026-04-16
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing TPU sole materials, in the process of reducing density, have poor abrasion resistance, high compression deformation rate, and low tear strength, making it difficult to balance density, elasticity, and abrasion resistance.

Method used

By adding modified porous corundum to TPU materials, the combination of the hard, wear-resistant skeleton of corundum and the flexible PCL chains forms physical entanglement and hydrogen bonds, thereby improving the wear resistance and mechanical properties of the material.

Benefits of technology

It improves the abrasion resistance and mechanical properties of TPU material, while maintaining the material's elasticity and tear strength, meeting the long-term use requirements of shoe soles.

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Abstract

本案涉及鞋底材料领域，具体为一种用于制作鞋底的耐磨TPU材料及其制备方法，耐磨TPU材料由A组分和B组分经反应挤出、造粒制得；A组分：聚酯多元醇、扩链剂、改性多孔刚玉、二异氰酸酯；B组分：二异氰酸酯、催化剂、发泡剂等；其中，改性多孔刚玉由多孔刚玉经表面活化后，在孔道内外原位开环聚合生成柔性PCL链而得；柔性PCL链上还具有聚乙二醇‑硬脂酸聚合物刷。改性多孔刚玉中刚玉核提供硬质耐磨骨架，柔性聚合物主链以及侧链聚合物刷补偿其刚性保持优异的回弹性；改性后的多孔刚玉在聚氨酯基体中相容性好，有效避免应力集中，同时聚合物链在TPU基体中形成物理缠结以及氢键等作用力，力学性能好，能够满足鞋底长期使用需求。
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