宇航材料工艺2017，Vol.47Issue(5)：7-15,9.DOI:10.12044/j.issn.1007-2330.2017.05.002
多巴胺修饰法镀银玻璃微球的表征及其在导电硅橡胶中的应用
Characterization of Silver Coated Silica Microsphere Through Dopamine-Assisted Functionalization and the Applied Evaluation of Conductive Silicone Rubber
李润源 1王帮武 1陈风波 1刘小艳 1朱巍1
作者信息
- 1. 航天材料及工艺研究所,北京 100076
- 折叠
摘要
Abstract
The bulk production of silver coated silica microsphere (SiO2/PDA/Ag) was realized by dopamineassisted functionalization and subsequent elelctroless plating.X-ray photoelectron spectroscopy (XPS),wide-angle X -ray diffraction (WAXD) and scanning electron microscope (SEM) results show that the silver layer on the surface of silica microsphere was homogenous,continuous and compact with stable silver contents.The surface of SiO2/PDA/Ag microsphere was much rougher than the one imported from U.S.The roughness will facilitate the electron tunneling effect of particles.The SiO2/PDA/Ag microsphere maintains its intactness and strongly adheres to ethyl vinyl silicone rubber after the blending with silicone rubber.The mechanical and electrical characterizations of conductive silicone rubber show that tensile strength is 2.54 MPa,elongation at rupture is 122.3％,volume resistivity before and after thermal aging is 3.9 and 9.0 mΩ·cm.关键词
多巴胺/镀银/玻璃微球/导电硅橡胶Key words
Dopamine/Silver plating/Silica microsphere/Conductive silicone rubber分类
通用工业技术引用本文复制引用
李润源,王帮武,陈风波,刘小艳,朱巍..多巴胺修饰法镀银玻璃微球的表征及其在导电硅橡胶中的应用[J].宇航材料工艺,2017,47(5):7-15,9.
