多官能度聚氨酯丙烯酸酯树脂的合成及性能研究  

Synthesis of Multi-functional Polyurethane Acrylate Resin and Its Properties

作　　者：王宁[1] 李镇江[1,2,3] 张林[2,3] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [3]西南科技大学中国工程物理研究院激光聚变研究中心极端条件物质特性联合实验室,四川绵阳621010

出　　处：《西南科技大学学报》2013年第1期21-24,共4页Journal of Southwest University of Science and Technology

基　　金：中国工程物理研究院基金资助(2012B0302050)

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、聚丙二醇(PPG)、丙烯酸羟乙酯(HEA)、三羟基丙烷二丙烯酸酯(TMPDA)及季戊四醇三丙烯酸酯(PETA)为主要原料合成了一系列的多官能度的聚氨酯丙烯酸酯(PUA)预聚物。通过傅立叶红外光谱(FT-IR)分析证实了PUA的结构。研究了固化膜的凝胶含量、力学性能,并通过动态力学热分析(DMA)进行了表征。结果表明:与单官能度丙烯酸酯封端的聚氨酯光固化膜相比,多官能度丙烯酸酯的引入有助于固化膜交联程度的提高,当紫外光照射35 s时,三官能度的丙烯酸酯封端的聚氨酯凝胶含量提高了3.6%,拉伸强度提高了264%。A series of multi-functional polyurethane acrylate prepolymers were prepared using isophorone diisocyanate, poly（ propylene glycol）, 2 - hydroxyethyl acrylate, Trihydroxymethylpropyl diacrylate and Pentaerythritol triaerylate as the main raw materials and theproduct thus obtained was characterized by FT -IR. The gel content, dynamic mechanical thermal an^ysis and mechanical properties were used to in- vestigate the properties of UV - cured films. The results show that the crosslinking density and tensile strength of multi-functional polyurethane acrylate membranes were increased effectively compared with sin- gle-functional polyurethane acrylate film. When the UV irradiation is 35 s, tri-functional polyurethane ac- rylate membranesgel content is improved by 3.6% and the tensile strength is improved by 264%.

关 键 词：多官能度 聚氨酯丙烯酸酯 紫外光固化 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]