乙烯基硅油对水作羟基供体制备发泡硅橡胶的影响机理分析  

Mechanism Analysis of the Effect of Vinyl Silicone Oil on the Preparation of Foamed Silicone Rubber with Water as a Hydroxyl Donor

作　　者：苏俊杰 李苗 曾幸荣[2] 吴向荣 罗斌 SU Junjie;LI Miao;ZENG Xingrong;WU Xiangrong;LUO Bin(Zhaoqing Haoming Silicone Material Co.,Ltd,Zhaoqing 526000,China;South China University of Technology,Guangzhou 510640,China)

机构地区：[1]肇庆皓明有机硅材料有限公司,广东肇庆526000 [2]华南理工大学,广东广州510640

出　　处：《橡胶科技》2020年第11期619-622,共4页Rubber Science and Technology

摘　　要：采用去离子水作为羟基供体与含氢硅油在铂催化条件下反应生成气体,用乙烯基硅油制备发泡硅橡胶,分析乙烯基硅油特性对发泡硅橡胶的影响机理。结果表明:乙烯基硅油粘度为22000 mPa·s时,发泡硅橡胶的密度和泡孔直径较小,发泡倍率较大,物理性能较好;水作为羟基供体与含氢硅油反应制备发泡硅橡胶依靠的是乙烯基硅油粘度与乙烯基含量的双重作用。The foamed silicone rubber was prepared with vinyl silicone oil and using deionized water as the hydroxyl donor to react with hydrogen-containing silicone oil under platinum catalysis to generate gas,and the mechanism of the influence of the characteristics of vinyl silicone oil on the foamed silicone rubber was analyzed.The results showed that when the viscosity of vinyl silicone oil was 22000 mPa·s,the density and cell diameter of foamed silicone rubber were smaller,the foaming ratio was larger,and the physical properties were better.The preparation of foamed silicone rubber by the reaction of water as a hydroxyl donor and hydrogen containing silicone oil depended on the dual effects of the viscosity of vinyl silicone oil and vinyl content.

关 键 词：发泡硅橡胶 乙烯基硅油 粘度 密度 发泡倍率 泡孔直径 羟基供体 

分 类 号：TQ333.93[化学工程—橡胶工业]