摘要
使用E-51环氧树脂、端胺基丁腈橡胶（ATBN）、液态芳香二胺（E100）制备了一系列不同ATBN含量的环氧-丁腈胶粘剂。利用SEM、DMTA、应力-应变、抗剪切强度测试手段研究了不同ATBN含量的试样的相态结构、断面形貌以及力学性能。结果表明，随着ATBN／E-51比例的递增，试样由“海-岛”结构（软相为岛）过渡到两相共连续结构，接着又回到“海-岛”结构（硬相为岛）。试样的相分离受固化速率和相分离速率相互竞争的影响，所形成的两相结构胶兼具橡-塑特性，在宽温域（-50℃～75℃）具有优秀的延伸率、粘合强度。
A series of epoxy/ATBN adhesives with different ATBN content were prepared based on E-51,ATBN and E100. SEM, DMTA,Strain-stress were used to study the phase structure, morphology and properties of the adhesives. The result shows that the phase structure of adhesives changes from a ‘sea-island＇ structure to a co-continues two-phase structure, and then back to a reversed ‘sea-island＇ structure with the increase of ATBN content. The phase separation is greatly influenced by the competition of the rate of separation and of curing reaction. When the proportion of ATBN/E-51 approached to 1, the relevant adhesive possesses the properties of both rubber and plastic and exhibits an excellent flexibility in a wide range temperature of -50℃-75℃.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第4期163-166,共4页
Polymer Materials Science & Engineering
