摘要
采用聚氧化丙烯二醇(PPG2000)、2,4-甲苯二异氰酸酯(TDI)合成聚氨酯预聚物,用甲基丙烯酸羟乙酯(HEMA)封端得到端乙烯基氨酯树脂(VTUR),加入苯乙烯(St)交联剂,用过氧化氢异丙苯(CHP)、过氧化甲乙酮(MEKP)2种固化剂制备了不同苯乙烯含量的弹性体。分析了VTUR的合成情况,以及苯乙烯含量对树脂黏度的影响趋势;探讨了苯乙烯用量及固化剂种类对弹性体阻尼性能和力学性能的影响规律。结果表明,成功合成了VTUR,且苯乙烯的加入使树脂黏度大幅降低;随着苯乙烯含量的提高,弹性体的阻尼峰值逐渐升高且峰温向高温方向偏移,力学强度呈增大的趋势;由CHP固化剂制备的弹性体阻尼性能优于MEKP固化剂。
Polyurethane propylene glycol(PPG2000)and 2,4-toluene diisocyanate(TDI)were used to synthesize a polyurethane prepolymer,which was capped with hydroxyethyl methacrylate(HEMA)to obtain a vinyl terminated urethane resin(VTUR).Styrene(St)as cross-linking monomer was added.Elastomers with different styrene contents were prepared with two curing agents,cumene hydrogen peroxide(CHP)and methyl ethyl ketone peroxide(MEKP).The synthesis of VTUR was analyzed,the influence of styrene content on the viscosity of the resins,and the influence of the amount of styrene and the type of curing agent on the damping and mechanical properties of the elastomers were also studied.The results show that VTUR was successfully synthesized and the addition of styrene decreases the viscosity of the resins;with the increase of styrene content,the damping peak of the elastomer gradually increases,and the peak temperature shifts to high temperature;the mechanical strength is increased.The elastomers made with CHP curing agent have better damping properties.
机构地区
海军工程大学基础部
海军工程大学舰船与海洋学院
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2021年第2期54-60,共7页
Polymer Materials Science & Engineering
基金
科研计划项目
装计(2016)757号文
科研计划项目(HJ20191A080365)。
