TDI三聚体的制备及黏合性能  

Synthesis of TDI trimer and its adhesion property

作　　者：田慧 范宽超 胡威威 王芳 张彰[1] TIAN Hui;FAN Kuan-chao;HU Wei-wei;WANG Fang;ZHANG Zhang(Department of chemical engineering, school of environmental and chemical engineering, Shanghai university, Shanghai 200444, China;Shanghai Amazing Chemical Co., Ltd., Shanghai 200000, China)

机构地区：[1]上海大学环化学院化工系,上海200444 [2]上海惊叹化工有限公司,上海200000

出　　处：《粘接》2019年第5期72-75,共4页Adhesion

摘　　要：对TDI三聚体合成工艺进行了系统研究并优化了反应工艺条件。结果表明,当叔胺类催化剂(C-11)用量为0.3%(相当于TDI质量而言)、反应温度为60℃以及采用浓度梯度聚合法制备TDI三聚体时,其-NCO%含量与反应时间均达到相对最佳,且聚合产品有良好的稳定性(可贮存180d以上)。以此组分复配制得的PVC涂层剂,其剥离强度达到2.8kN/m,相比改性前产品,粘接强度提高了5%。The synthesis of TDI trimer was systematically explored and the process conditions were optimized.From the experiments, it shows that the polymerization was conducted at 60 ℃ by concentration gradient method with C-11 as catalyst(0.3%wt),the NCO% value(target)and reaction time are best matched, and the product has an excellent stability(it can be stored for more than 6 months).Furthermore, the peeling strength of the PVC coating agent, formulated with TDI trimer synthesized above was up to 2.8 kN/m, which was 5% higher than that of the product before modification.

关 键 词：TDI三聚体 PVC涂层剂 异氰酸基团 剥离强度 

分 类 号：TQ433.4[化学工程]