The invention relates to the technical field of polymer synthesis, and particularly provides bio-based mixed polyurethane rubber and a preparation method thereof. According to the invention, lactide and cyclic lactone are used as raw materials, low-molecular dihydric alcohol is used as an initiator to synthesize bio-based polylactic acid dihydric alcohol, and then the synthesized bio-based polylactic acid dihydric alcohol, diisocyanate and a chain extender are used to synthesize the bio-based mixed polyurethane rubber. The prepared bio-based polyurethane rubber composite material has the advantages of wear resistance, adjustable performance and the like, meanwhile, the loss factor at the temperature of 0 DEG C is high, the loss factor at the temperature of 60 DEG C is low, the problem of a Velcro triangle applied to a tire can be solved, finally, when a product fails, the composite material can be degraded, and pollution of a high polymer material to the environment is reduced.

    本发明涉及高分子合成技术领域,具体提供了一种基于生物基的混炼型聚氨酯橡胶及其制备方法。本发明使用丙交酯和环状内酯为原料,低分子二元醇为起始剂先合成生物基的聚乳酸二元醇,然后用合成的生物基聚乳酸二元醇、二异氰酸酯和扩链剂合成生物基混炼型聚氨酯橡胶,制备的生物基聚氨酯橡胶复合材料具有耐磨、性能可调控等优点的同时,0℃的损耗因子高,60℃损耗因子低,能解决轮胎运用的魔鬼三角的问题,最后在制品失效的时候,还可以降解,减少高分子材料对环境造成的污染。


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    Title :

    Bio-based mixed polyurethane rubber, and preparation method and application thereof


    Additional title:

    一种基于生物基的混炼型聚氨酯橡胶及制备方法与应用


    Contributors:
    ZHANG LIQUN (author) / HU SHIKAI (author) / SHOU TAO (author) / ZHAO XIUYING (author)

    Publication date :

    2021-06-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen