江南大学化学与材料工程学院;
以双酚A型环氧树脂和不同种类环氧活性稀释剂为原料,以硫鎓盐作为光引发剂,制备了一系列具有延迟特性的单组分光固化环氧胶粘剂。考察了胶粘剂的UV延迟固化性能、力学性能、热性能及胶粘剂的室温储存性能。研究结果表明:当w(活性稀释剂)=25%(相对于总质量而言)时,胶粘剂经UV辐照10 s后,可提供3 min的延迟固化时间窗口,随后搭接并能够在10 min内产生一定的初始粘接强度,固化后的胶粘剂拉伸剪切强度可达3.42 MPa;通过调节体系中活性稀释剂的含量,胶粘剂的延迟固化时间可从2～20 min进行有效调控,并且胶粘剂固化物具有较好的热稳定性,起始热分解温度大于300℃;此外,胶粘剂体系在温度为50℃条件下至少可存储90 d。本研究所制备的单组分光固化胶粘剂具有延迟固化的特点,可应用于不透光基材间的粘接,同时具有良好的粘接强度及室温存储稳定性,应用前景广阔。
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基本信息:
DOI：10.13416/j.ca.2021.11.003
中图分类号:TQ430.7
引用信息:
[1]李平,周雅维,韩金石等.单组分UV延迟固化胶粘剂的制备及性能研究[J].中国胶粘剂,2021,30(11):6-12+18.DOI:10.13416/j.ca.2021.11.003.
基金信息: