Polyurethane rubber with low compression set and preparation method thereof

The invention discloses polyurethane rubber with low compression set and a preparation method thereof, the Shore hardness of the polyurethane rubber is 92HA, and the polyurethane rubber meets the use requirement of a sealing ring prepared from the polyurethane rubber in a 15 # aviation hydraulic oil...

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Bibliographische Detailangaben
Hauptverfasser: CHEN YULIN, HE WEI, ZHANG HAO, XU ENYUN, PANG YANMEI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses polyurethane rubber with low compression set and a preparation method thereof, the Shore hardness of the polyurethane rubber is 92HA, and the polyurethane rubber meets the use requirement of a sealing ring prepared from the polyurethane rubber in a 15 # aviation hydraulic oil working condition environment in a 70 DEG C temperature environment and a 70-hour test condition. The problem that the low-compression permanent deformation performance of polyurethane rubber cannot meet the requirements of working conditions and environments is solved. 本发明公开了一种低压缩永久变形的聚氨酯橡胶及其制备方法,聚氨酯橡胶的邵尔硬度为92HA,在70℃温度环境、70小时试验条件下,满足聚氨酯橡胶制成密封圈在15#航空液压油工况环境下使用的需求,解决了聚氨酯橡胶的低压缩永久变形性能不能满足在工况环境要求的问题。