基于端羟基聚丁二烯聚氨酯型UV减粘胶的合成与性能  

Synthesis and Characterization of UV Adhesion-Reducing Adhesives Based on Hydroxy-Terminated Polybutadiene Polyurethane

作　　者：焦珊珊 任凤梅 武星 马海红 周正发 徐卫兵 高敏 Shanshan Jiao;Fengmei Ren;Xing Wu;Haihong Ma;Zhengfa Zhou;Weibing Xu;Min Gao(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Rongze Technology Co.,Ltd,Yinshang 236299,China)

机构地区：[1]合肥工业大学化学与化工学院,安徽合肥230009 [2]安徽荣泽科技有限公司,安徽颖上236299

出　　处：《高分子材料科学与工程》2022年第7期1-6,共6页Polymer Materials Science & Engineering

基　　金：阜阳市重大专项(FK20208021)。

摘　　要：先以端羟基聚丁二烯与异佛尔酮二异氰酸酯反应,然后以1,4-丁二醇或1,4-丁烯二醇为扩链剂进行扩链,控制主链中C=C含量,并添加二官能度或三官能度的丙烯酸酯交联单体,制备了聚氨酯型紫外(UV)减粘胶。采用傅里叶变换红外光谱表征了减粘胶的分子结构;考察了交联程度对减粘效果的影响。结果表明,随着减粘胶交联密度、凝胶率的增加,减粘胶的体积收缩率增大,进而表面粗糙度增加,减粘效果明显。当以1,4-丁烯二醇为扩链剂、三羟甲基丙烷三丙烯酸酯(TMPTA)为可交联单体所得的减粘胶UV照射前的剥离力达19 N/25 mm,UV照射后的剥离力降低至0.2N/25 mm,满足使用要求。Polyurethane UV adhesion-reducing adhesives were prepared by hydroxyl terminated polybutadiene which reacted with isophorone diisocyanate firstly,and then 1,4-butanediol or 1,4-butenediol was used as chain extender to expand the chains and control the content of C=C in the main chains,and two or three functional acrylate was used as crosslinking monomer monomer.The molecular structure of the adhesion-reducing adhesives was characterized by Fourier transform infrared spectroscopy(FT-IR).The effect of cross-linking degree on adhesionreducing was investigated.The experimental results show that with the increase of the cross-linking density and the gel ratio of the adhesion-reducing adhesives,the volume shrinkage of adhesive increases,and then the surface roughness increases,and the adhesion-reducing effect is obvious.When 1,4-butenediol is used as chain extender and trimethylolpropane triacrylate(TMPTA) is used as crosslinkable monomer,the peeling strength reaches 19 N/25 mm before UV irradiation,and decreases to 0.2 N/25 mm after UV irradiation,which meets the application requirements.

关 键 词：UV减粘胶 聚氨酯 端羟基聚丁二烯 剥离力 

分 类 号：TN305[电子电信—物理电子学]