一种低气味快固化丙烯酸酯结构胶的研制  

Preparation of a low odor and fast curing acrylate structural adhesive

作　　者：王德鹏 乔雪冬 王冠璋 鲍静 匡广际 杨猛 Wang Depeng;Qiao Xuedong;Wang Guanzhang;Bao Jing;Kuang Guangji;Yang Meng(Gleihow New Materials Co.,Ltd.,Fushun 113004,Liaoning,China)

机构地区：[1]哥俩好新材料股份有限公司,辽宁抚顺113004

出　　处：《中国胶粘剂》2022年第12期38-42,共5页China Adhesives

基　　金：辽宁省“兴辽英才计划”项目资助(XLYC1907092)。

摘　　要：选用低气味的甲基丙烯酸高级烷基酯单体和低气味、低挥发性的三乙醇胺(TEOA)作为促进剂,来降低丙烯酸酯结构胶的气味。通过调整加入甲基丙烯酸(MAA)、还原剂及促进剂等的质量分数来提高丙烯酸酯结构胶的固化速度,制备了一种低气味、快固化丙烯酸酯结构胶。重点考察了聚合主单体、MAA、多官能度功能单体、还原剂及引发剂对结构胶性能的影响。研究结果表明:当2-苯氧乙基甲基丙烯酸酯(PHEMA)和甲基丙烯酸甲酯(MMA)组合作为主单体,并且其质量比为1∶1时,制备的胶液具有气味低、固化速度快、剪切强度高的特点;MAA对丙烯酸酯结构胶的固化时间影响较大,确定MAA的加入量占总质量的分数为12.5%;加入占总质量的分数为4.0%的季戊四醇三丙烯酸酯(PETA),可以制得耐热性能优异的胶液;确定TEOA为固化还原剂,加入占总质量的分数为2.0%;加入异丙苯过氧化氢(CHP)占总质量的分数为4.0%时,制备的丙烯酸酯结构胶固化速度快、贮存稳定性优异。本研究制备的结构胶气味轻微,固化速度快(常温固化时间可达到200秒),耐温性能优异,120℃下的拉伸剪切强度可达到12.5 MPa。The low odor alkyl methacrylate monomer and low odor,low volatility triethanolamine(TEOA)as accelerator were selected to reduce the odor of acrylate structural adhesive.By adjusting the mass fraction of methacrylic acid(MAA),reducing agent and accelerator to improve the curing speed of acrylate structural adhesive,a low odor,fast curing acrylate structural adhesive was prepared.The effects of main polymerization monomers,MAA,multifunctional monomers,reducing agents and initiators on the properties of structural adhesive were emphatically investigated.The research results showed that when 2-phenoxyethyl methacrylate(PHEMA)and methyl methacrylate(MMA)were combined as main monomers and their mass ratio was 1∶1,the prepared adhesive solution had low odor,fast curing speed and high shear strength.MAA had a large effect on the curing time of acrylate structural adhesive,and the addition amount of MAA was determined to be 12.5%in the total mass.By adding 4.0%pentaerythritol triacrylate(PETA)in the total mass,the adhesive solution with excellent heat resistance could be prepared.TEOA was determined as the curing reductant,and the addition amount in the total mass was 2.0%.When the content of cumene hydroperoxide(CHP)was 4.0%in the total mass,the acrylate structural adhesive prepared had fast curing speed and excellent storage stability.The structural adhesive prepared in this study had mild odor,fast curing speed(curing time at room temperature could reach 200 s),excellent temperature resistance,and tensile shear strength could reach 12.5 MPa at 120℃.

关 键 词：低气味 耐温性 快固化 丙烯酸酯结构胶 

分 类 号：TQ436[化学工程]