氨基聚硅氧烷改性HTPB型聚氨酯的合成与性能  

Synthesis and performance for HTPB/polyurethane modified by amino-terminated polysiloxane

作　　者：邓茂盛[1] 吴晓青[1] 胡厉强[2] 周彩元[1] 

机构地区：[1]中北大学理学院化学系,山西太原030051 [2]中北大学化工与环境学院,山西太原030051

出　　处：《中国胶粘剂》2010年第1期21-25,共5页China Adhesives

基　　金：太原市大学生创新创业专项基金项目(09122028)

摘　　要：以HTPB(端羟基聚丁二烯)、IPDI(异佛尔酮二异氰酸酯)和自制的NH2-PDMS(氨基聚硅氧烷)为主要原料制取NH2-PDMS改性PU(聚氨酯)预聚体;然后以MOCA(3,3′-二氯-4,4′-二苯基甲烷二胺)和硅氧烷偶联剂(DB-550)为交联固化剂,在湿态条件下交联固化,制取硅氧烷封端的HTPB型NH2-PDMS改性PU。结果表明:当R=2.5、w(NH2-PDMS)=12%和n(MOCA)∶n(DB-550)=9∶1时,采用预聚法合成的改性PU,其力学性能优异、吸水率较低以及耐老化性能较好。With HTPB （hydroxyl-terminated polybutadiene）,IPDI （isophorone diisocyanate） and self-made NH2-PDMS （amino-terminated polysiloxane） as main materials, so a polyurethane （PU） prepolymer modified by NH2-PDMS was prepared. Then with MOCA and silicane coupler（DB-550） as cross linker and curing agent,so a HTPB/PU terminated and modified by NH2-PDMS were synthesized by curing and crosslinker in humid condition. The results showed that the modified PU had excellent mechanics performance,lower water absorption and better aging resistant when R value was 2.5 ,mass fraction of NH2-PDMS was 12% ,molar ratio of MOCA to DB-550 was 9：1 and synthetical method was prepolymer method.

关 键 词：聚氨酯 氨基聚硅氧烷 端羟基聚丁二烯 改性 力学性能 

分 类 号：TQ433.432[化学工程]