Preparation method and calendering process of wear-resistant TPU (thermoplastic polyurethane) material

By using silicone quaternary ammonium copolymers in TPU materials to blend them with polyurethane elastomer and silicone rubber, the problems of wear resistance and antibacterial properties of TPU materials are solved, and its mechanical properties and antibacterial properties are significantly improved, and its application in the field of antibacterial medical supplies has been expanded.

CN119842212APending Publication Date: 2025-04-18SHANTOU XIONGYE IND CO LTD
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Patent Information

Application Number
CN202510142840.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

The poor wear resistance and antibacterial properties of TPU materials limit their application in fields such as antibacterial medical supplies.

Method used

The silicon quaternary ammonium salt is used to perform hydrogen silicon addition polymerization reaction to prepare a silicon quaternary ammonium salt copolymer, and blend it with polyurethane elastomer and silicon rubber. The wear-resistant TPU material is prepared by a combination process of a twin-screw extruder, torque rheometer and calender.

Benefits of technology

It significantly improves the wear resistance, tear strength and antibacterial properties of TPU materials, and expands its application in the fields of antibacterial medical equipment and other fields.

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Abstract

The invention relates to the technical field of polyurethane, and discloses a preparation method and a calendering process of a wear-resistant TPU (thermoplastic polyurethane) material, and the preparation method comprises the following steps: adding 100 parts by weight of polyurethane elastomer, 10-40 parts by weight of silicone rubber and 1-6 parts by weight of organosilicon quaternary ammonium salt copolymer into a twin-screw extruder, blending and extruding to obtain the wear-resistant TPU material. And then vulcanizing with 0.12-0.7 part by weight of 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane in a torque rheometer, and finally performing calendering process treatment in a calender to obtain the wear-resistant TPU material. The organosilicon quaternary ammonium salt copolymer can be used as a compatilizer to improve the compatibility between the polyurethane elastomer and the silicone rubber, so that the TPU material has better mechanical properties and wear resistance. Meanwhile, the organosilicon quaternary ammonium salt copolymer contains a biquaternary ammonium salt antibacterial structure and has a very strong bactericidal effect, and the antibacterial performance of the TPU material is remarkably improved. The practical application of the TPU material in the aspects of antibacterial medical instruments and supplies and the like is expanded.
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Citation Information

Patent Citations

  • A silicone rubber / polyurethane thermoplastic vulcanizate, its preparation method and application

    CN112143231B