二甲基硅油对固体硅橡胶憎水迁移性能的影响  

Effect of Dimethyl Silicone Oil on Hydrophobicity Transference of Solid Silicone Rubber

作　　者：张浮龙 黄雷 曾莹 周庭 王俊和 ZHANG Fulong;HUANG Lei;ZENG Ying;ZHOU Ting;WANG Junhe(China Bluestar Chengrand Chemical Co.,Ltd.,Chengdu 610041,China;Research Center of National Silicone Engineering Technology,Chengdu 610041,China;Jiangsu Product Quality Testing&Inspection Institute,Yixing 214205,China)

机构地区：[1]中蓝晨光化工研究设计院有限公司,成都610041 [2]国家有机硅工程技术研究中心,成都610041 [3]江苏省产品质量监督检验研究院,江苏宜兴214205

出　　处：《有机硅材料》2025年第1期24-28,共5页Silicone Material

摘　　要：向甲基乙烯基硅橡胶中添加二甲基硅油、气相法二氧化硅、氢氧化铝等制得固体硅橡胶,研究了二甲基硅油用量和黏度对固体硅橡胶憎水性、憎水迁移性和物理性能的影响。结果表明,固体硅橡胶的初始憎水性与二甲基硅油的用量和黏度无明显关系。随着二甲基硅油用量的增加,固体硅橡胶的憎水迁移变快,但达到平衡后的憎水性差别不大。低黏度的二甲基硅油可使固体硅橡胶在更短时间内发生憎水迁移,采用500mPa·s二甲基硅油的固体硅橡胶的憎水迁移性最优。二甲基硅油对硅橡胶具有一定的增塑作用,固体硅橡胶的断裂伸长率和流动性随着二甲基硅油用量的增加而提高,拉伸强度与二甲基硅油的用量关系不大。二甲基硅油的黏度对固体硅橡胶拉伸强度、撕裂强度和流动性的影响均不显著。使用较低黏度二甲基硅油制备的固体硅橡胶断裂伸长率较高,但随着二甲基硅油黏度的增加,断裂伸长率变化不明显。The solid silicone rubber was prepared with dimethyl silicone oil,fumed silica,aluminum hydroxide into the methyl vinyl silicone rubber.The effects of the content and viscosity of dimethyl silicone oil on the hydrophobicity,hydrophobicity transference and physical properties of the silicone rubber were studied.The results indicate that there is no significant relationship between the initial hydrophobicity of solid silicone rubber and the content and viscosity of dimethyl silicone oil.With the increase of dimethyl silicone oil,the hydrophobicity transference of solid silicone rubber becomes faster,but the hydrophobicity has litle difference after reaching equilibrium.Dimethyl silicone oil with low viscosity has hydrophobicity transference of silicone rubber in a shorter time,and the solid silicone rubber has optimal hydrophobic migration with 500 mPa·s dimethyl silicone oil.Dimethyl silicone oil has a certain plasticization on silicone rubber.The elongation at break and fluidity of the solid silicone rubber increase with the increase of dimethyl silicone oil,while there is no significant relationship between the tensile strength and the content of dimethyl silicone oil.The solid silicone rubber prepared with lower viscosity dimethyl silicone oil has a higher elongation at break,but the no change in elongation at break as the viscosity of dimethyl silicone oil increases.

关 键 词：电力 外绝缘 憎水迁移 二甲基硅油 憎水性 

分 类 号：TQ333.93[化学工程—橡胶工业]