异氰脲酸酯改性聚氨酯弹性体包覆层研究  

Study on Isocyanurate-Modified Polyurethane Elastomer Coating Layer

作　　者：吴淑新[1] 史爱娟[1] 姚逸伦[1] 王吉贵[1] 路向辉[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《化学推进剂与高分子材料》2011年第2期53-55,共3页Chemical Propellants & Polymeric Materials

摘　　要：为改进固体推进剂包覆层的耐烧蚀性能,以端羟基碳氮杂环氯化聚醚多元醇和改性液体,4,4'-二苯基甲烷二异氰酸酯(L-MDI)为主要原料,设计合成异氰脲酸酯改性聚氨酯弹性体(IMPUE),用于固体推进剂包覆层粘接体系。结果表明,IMPUE具有良好的力学性能,与普通聚氨酯弹性体相比,其热性能、阻燃性能及耐烧蚀性能明显提高,是一种性能优异的聚氨酯弹性体。热分解研究表明,IMPUE结构中的异氰脲酸酯环明显改变聚氨酯的热分解历程,有效提高了IMPUE的热稳定性。In order to improve ablation resistance of solid propellant coating layer,the isocyanurate-modified polyurethane elastomer（IMPUE） used in adhesion system of solid propellant coating layer was designed and synthesized by using hydroxyl-terminated carbon nitrogen heterocyclic chlorinated polyether polyol and modified liquid 4,4＇-diphenylmethane diisocyanate（L-MDI） as main raw materials.The results show that IMPUE has good mechanical properties.Compared to conventional polyurethane elastomer,its thermal properties,flame retardancy and ablation resistance can significantly increase.Therefor,it is a kind of polyurethane elastomer with excellent properties.The thermal decomposition studies show that the isocyanurate ring in IMPUE structure obviously changes the thermal decomposition course of polyurethane and efficiently improves the thermal stability of IMPUE.

关 键 词：碳氮杂环氯化聚醚多元醇 改性L-MDI 包覆层 

分 类 号：TQ334.1[化学工程—橡胶工业]