Preparation and properties of modified nano SiO2/silicone rubber composites

被引：0

作者：

Ouyang Z. ^{[1
]}

Li S. ^{[1
]}

Shi Z. ^{[1
]}

Fu Y. ^{[1
]}

机构：

[1] Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2019年 / 36卷 / 07期

关键词：

Composites; Liquid silicone rubber; Mechanical properties; Nano SiO[!sub]2[!/sub; Surface modification;

D O I：

10.13801/j.cnki.fhclxb.20180930.001

中图分类号：

学科分类号：

摘要：

To improve the dispersibility of nano SiO2 particles in silicon rubber (SR) and the interfacial bonding performance of the two phases, the surface modification agent consisting of hydroxyl silicone oil (HSO) and 3-(trimethoxysilyl)propylmethacrylate (KH570) for nano SiO2was designed. And the modified nano SiO2/SR composites were prepared. The morphology structure of nano SiO2 and the dispersibility of nano SiO2in the ethanol were investigated, the fracture surface morphology, mechanical properties and thermal stability of the modified nano SiO2/SR composites were also analyzed. The results show that KH570 is successfully grafted to the surface of nano SiO2 and formes chemical bonds with the SR matrix. When the nano SiO2 is treated by the hybrid surface modification agent (HSO cooperated with KH570), the dispersibility of SiO2 in SR matrix, and the interface bonding performances between SiO2 and SR are improved obviously, the mechanical properties and thermal stability of the SiO2/SR composites are also enhanced significantly. When SiO2:HSO:KH570 mass ratio is 2.0:0.2:0.6, the initial temperature of thermal decomposition of the modified nano SiO2/SR composite increases to 230℃. When SiO2:HSO:KH570 mass ratio is 2.0:0.2:0.45, the tensile strength and elongation at break of the modified nano SiO2/SR composite increase twice, respectively. © 2019, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：1700 / 1707

页数：7

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