乙烯基环氧有机硅增粘剂的合成及在加成型有机硅离型剂中的应用  

Preparation of Viny-epoxy Modified Silicon Tackifier and Application in Addition Silicone Release Agents

作　　者：杨逸豪 娄焯垚 涂园园[1,2,3,4,5] 孔佳利 黄振祝 YANG Yihao;LOU Zhuoyao;TU Yuanyuan;KONG Jiali;HUANG Zhenzhu(Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou 510650,China;University of Chinese Academy of Sciences,Beijing 100049,China;CAS Engineering Laboratory for Special Fine Chemicals,Guangzhou 510650,China;CASH GCC Shaoguan Research Institute of Advanced Materials,Shaoguan 512400,China;CASH GCC Fine Chemicals Incubator(Nanxiong)Co.,Ltd,Nanxiong 512400,China)

机构地区：[1]中国科学院广州化学研究所,广东广州510650 [2]中国科学院大学,北京101408 [3]中国科学院新型特种精细化学品工程实验室,广东广州510650 [4]国科广化韶关新材料研究院,广东韶关512400 [5]国科广化精细化工孵化器(南雄)有限公司,广东南雄512400

出　　处：《广州化学》2024年第3期12-16,I0001,F0003,共7页Guangzhou Chemistry

基　　金：2022年韶关市“南岭团队计划”项目。

摘　　要：采用3-[(2,3)-环氧丙氧]丙基甲基二甲氧基硅烷(GDMMS)、二甲基二甲氧基硅烷(DMDMS)、二甲基乙氧基乙烯基硅烷(DMEVS)等原料通过水解缩合法制备了一种端乙烯基的环氧有机硅增粘剂(VEPS)。利用FT-IR和1H/29Si-NMR对所合成的VEPS的结构进行了表征,表明预聚体的成功合成。将合成的VEPS添加到无溶剂加成型有机硅离型剂(ASRA)中,探究了不同添加量的VEPS对ASRA涂布在格拉辛纸上的离型力、残接率、附着力的影响。结果表明:添加VEPS含量为2%的ASRA,24 h老化剥离力提高约10.9%,残接率为91%;在75℃和85%RH的老化条件下,ASRA耐脱硅时间由未添加时的3天延长至30天。同时,探究了添加VEPS含量为2%的ASRA涂布在格拉辛纸、铜板纸、热敏纸、淋膜纸等基材上的附着性能对比,发现VEPS的加入对离型剂在不同基材上的附着力均起到明显提升作用。The vinyl-capped epoxy polysiloxane(VEPS)was successfully synthesized via hydrolysis-condensation reaction with dimethoxydimethylsilane(DMDMS),dimethylethoxyvinylsilane(DMEVS),and 3-glycidyloxypropyl(dimethoxy)methyl-silane(GDMMS)as precursors.The structures of the synthesized VEPS was characterized by Fourier-transform infrared(FT-IR)and nuclear magnetic resonance(1H/29Si-NMR)spectroscopy techniques,thus confirming the successful synthesis of this prepolymers.The as-prepared VEPS was utilized as a tackifier in the solvent-free addition silicone release agents(ASRA).The relationships between the incorporation content of VEPS and the release force,the residual splice rate,and adhesion of ASRA on the gration base paper were exploited.The results indicate that the resistance to desilication of ASRA with 2%VEPS was extended from 3 days to more than 30 days at 75℃and 85%RH ambient conditions,indicating excellent substrate adhesion to gration base paper.Meanwhile,the residual splice rate of ASRA remains roughly 91%;the aging 24 h release force only increased by about 10.9%.Notably,the adhesion of ASRA with 2%of VEPS on gration base paper,copper plate paper,thermal-sensitive paper,and PE coated paper has been dramatically enhanced.

关 键 词：环氧基 有机硅 增粘剂 有机硅离型剂 附着力 

分 类 号：TQ33.93[化学工程—橡胶工业]