The invention relates to the technical field of polyurethane elastic materials, and particularly relates to a high-hardness polyurethane elastomer as well as a preparation method and application thereof. The high-hardness polyurethane elastomer is prepared by matching polyether polyol with specific functionality and number-average molecular weight, micromolecular diol, 4,4'-diphenylmethane diisocyanate, 3,3'-dichloro-4,4 '-diaminodiphenylmethane and the like, the required hard segment content is low, and the heat resistance and the dynamic property are better. The preparation method of the high-hardness polyurethane elastomer adopts a semi-prepolymer method to prepare the high-hardness polyurethane elastomer, has the characteristics of simple preparation method and suitability for large-scale production, and is low in raw material viscosity and low in equipment requirement. According to the application of the high-hardness polyurethane elastomer, endogenous heat generated by the prepared high-hardness polyurethane elastomer is easy to dissipate, and the high-hardness polyurethane elastomer is low in hard segment content and good in dynamic mechanical property, so that the high-hardness polyurethane elastomer is suitable for preparing trundles and skateboard wheels for industry and logistics.
本发明涉及聚氨酯弹性材料的技术领域,具体涉及一种高硬度聚氨酯弹性体及其制备方法和应用。该高硬度聚氨酯弹性体通过配合特定官能度和数均分子量的聚醚多元醇、小分子二醇、4,4’‑二苯基甲烷二异氰酸酯和3,3’‑二氯‑4,4’‑二氨基二苯基甲烷等制备而成,所需的硬段含量较低,耐热性和动态性能也更好。高硬度聚氨酯弹性体的制备方法,是采用半预聚体法制备得到高硬度聚氨酯弹性体,具有制备方法简单,且适合于大规模生产的特点,并且原料的粘度低,对设备要求不高。高硬度聚氨酯弹性体的应用,由于所制得的高硬度聚氨酯弹性体产生的内生热容易散去,且硬段含量低,动态力学性能好,因此适用于制备工业及物流用的脚轮和滑板轮。
High-hardness polyurethane elastomer as well as preparation method and application thereof
一种高硬度聚氨酯弹性体及其制备方法和应用
2021-04-23
Patent
Electronic Resource
Chinese
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 / B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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