扩链剂EG/BDO配比对聚醚/聚酯基PUE性能的影响  

Effect of EG/BDO Ratio of Chain Extenders on Performance of Polyether/Polyester Based PUE

作　　者：武莎莎 胡应模[1] 崔奎 郭素芳 WU Shasha;HU Yingmo;CUI Kui;GUO Sufang(Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes,National Laboratory of Mineral Materials,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国地质大学(北京)、非金属矿物和固废资源材料化利用北京市重点实验室、岩石矿物材料国家专业实验室,北京100083

出　　处：《聚氨酯工业》2023年第2期23-26,共4页Polyurethane Industry

摘　　要：以聚醚三醇330N和聚碳酸酯二醇(PCDL)混合多元醇为软段、4,4′-二苯基甲烷二异氰酸酯(MDI)为异氰酸酯组分、乙二醇(EG)和1,4-丁二醇(BDO)为混合扩链剂,采用预聚法制备了聚醚/聚酯基聚氨酯弹性体(PUE)。讨论了EG/BDO质量比对PUE微相分离结构、刚性、阻尼性能、热稳定性及力学性能的影响。结果表明,随着EG含量增加,PUE的微相分离程度增加,刚性增加,阻尼性能提高;引入EG扩链剂后,PUE的热稳定性降低;当EG/BDO质量比为70∶30时,所得PUE综合力学性能较优。Polyether/polyester based polyurethane elastomers(PUE)were prepared by prepolymerization method with polyether triol 330N and polycarbonate diol(PCDL)as mixed soft segment,4,4'-diphenyl methane diisocyanate(MDI)as isocyanate component,ethylene glycol(EG)and 1,4-butanediol(BDO)as mixed chain extenders.The effects of EG/BDO mass ratio on PUE microphase separation structure,rigidity,damping property,thermal stability and mechanical property were discussed.The results showed that,with the increase of EG content,the microphase separation degree,rigidity and damping performance of PUE increased.The thermal stability of PUE decreased after the introduction of EG chain extender.When EG/BDO mass ratio was 70:30,the comprehensive mechanical performance of PUE were better.

关 键 词：聚氨酯 混合多元醇 混合扩链剂 微相分离 力学性能 

分 类 号：TQ333.95[化学工程—橡胶工业]