吸收剂量对多面体低聚倍半硅氧烷/聚(氨酯-酰亚胺)辐射共交联纳米复合泡沫材料的影响  

Effect of absorbed dose on radiation crosslinking polyhedral oligomeric silsesquioxane/poly (urethane-imide) nano-composite foam

作　　者：周成飞[1] 曹巍[1] 翟彤[1] 曾心苗[1] 郭建梅[1] 

机构地区：[1]北京市射线应用研究中心北京市科学技术研究院辐射新材料重点实验室,北京100015

出　　处：《合成橡胶工业》2013年第2期115-118,共4页China Synthetic Rubber Industry

基　　金：北京市科技计划资助项目(Z08000303220804)

摘　　要：以甲基丙烯酸β-羟乙酯和乙烯基多面体低聚倍半硅氧烷(POSS)为原料,采用一步法制得POSS/聚(氨酯-酰亚胺)纳米复合泡沫材料,研究了γ射线吸收剂量对纳米复合泡沫材料性能的影响。结果表明,在吸收剂量为50 kGy的条件下辐照,材料表现出最好的热稳定性;纳米复合泡沫材料玻璃态区的储能模量最高,损耗模量也遵循同样规律,但在75 kGy条件下损耗峰值最高。另外,吸声性能、阻燃性能和压缩强度都随着吸收剂量的增大而提高。The polyhedral oligomeric silsesquioxane（POSS）/poly（urethane-imide）（PUI） was prepared by one-step method with 2-hydrooxyethyl methacrylate and vinyl-POSS as materials.The effect of absorbed dose of γ-ray on the properties of the nano-composite foam was investigated.The results showed that the thermal stability of radiation crosslinking POSS/PUI nano-composite foam was the best when absorbed dose was 50 kGy.The storage modulus in glassy zone of nano-composite foam was the hightest when absorbed dose was 50 kGy,while the loss modulus in glassy zone followed the same rule,but the loss peak value reached the maximun when absorbed dose was 75 kGy.Besides,the acoustic properties,flame retardance and compressive strength of nano-composite foam increased with the increase of absorbed dose.

关 键 词：聚(氨酯-酰亚胺) 多面体低聚倍半硅氧烷 辐射共交联 热稳定性 吸声性能 阻燃性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]