双主剂型改性丙烯酸酯结构胶挥发过程的质量变化研究  

Research of Mass Changing During the Volatilization of Modified Two-Component Structural Acrylic Adhesive

作　　者：张文[1] 周恒为[1] 张丽[1] 刘君[1] 黄以能[1,2] 

机构地区：[1]伊犁师范学院物理科学与技术学院新疆凝聚态相变与微结构实验室,新疆伊宁835000 [2]南京大学物理学院国家固体微结构重点实验室,江苏南京210093

出　　处：《伊犁师范学院学报（自然科学版）》2012年第2期31-33,共3页Journal of Yili Normal University：Natural Science Edition

基　　金：国家自然科学基金(30860076);国家973项目(2012CB821500);新疆高技术发展项目(200916126);新疆科技厅自然基金(200821104;200821184);伊犁师范学院重点项目(20082D002)

摘　　要：在定温、定压和定湿度条件下,用电子天平对双主剂型改性丙烯酸酯结构胶(AB胶)挥发过程中质量随时间的变化进行了测量研究.实验结果分析表明,AB胶的A和B组分的挥发都包含一快一慢两个过程,对应于两个挥发过程,至少有两种易挥发的单质,而且A组分中它们的含量分别大于18.4%和28.9%,B组分中它们的含量分别大于13.6%和34.7%.AB混合物的挥发只有一个过程,仅存在一种主要易挥发物,其含量至少大于16.1%.根据丙烯酸酯胶固化反应机理,可以认为在A、B组分中存在的易挥发物质分别为甲基丙烯酸和甲基丙烯酸甲酯,而AB混合物的质量变化主要由甲基丙烯酸的挥发所致.Mass versus time during the volatilization of modified two-component structural acrylic adhesive was measured and investigated by electronic balance in condition of constant temperature, pressure and relative humidity. The results reveal that it contains a quick and a slow process each during volatilization of component A and component B of AB adhesive, which correspond to two volatilizations and at least two volatile elementary substances. Moreover, the proportions of them are over 18.4% and 28.9% in component A, and over l 3.6% and 34.7% in component B, respectively. While there is only one volatilization process in AB combination, which means there is only one volatile in AB combination, the proportion of which is over 16.1%. According to solidification reaction mechanism of acrylic adhesive, the two volatiles in component A and component B are methacrylic acid and methyl methacrylate, while mass changing of AB combination is mainly caused by volatilization of methacrylic acid.

关 键 词：丙烯酸酯结构胶 质量变化 挥发过程 

分 类 号：TQ433.436[化学工程]