Effect of aluminum hydroxide (ATH) content on free volumes and water barrier property of silicone rubber

Di Zhang; Zheng Wang; Yue Yang; Jingjing Li; Chunqing He; Ning Qi; Xiangyang Peng; Zhen Huang; Pengfei Fang

doi:10.56646/jjapcp.9.0_011203

4th Japan-China Joint Workshop on Positron Science (JWPS2019)

Session ID : 011203

DOI https://doi.org/10.56646/jjapcp.9.0_011203

Conference information

Host: The organizing committee of JWPS2019

Name : 4th Japan-China Joint Workshop on Positron Science (JWPS2019)

Location : Nara, Japan

Date : October 28, 2019 - November 02, 2019

Polymers, membranes, and porous media

Effect of aluminum hydroxide (ATH) content on free volumes and water barrier property of silicone rubber

Di Zhang, Zheng Wang, Yue Yang, Jingjing Li, Chunqing He, Ning Qi, Xiangyang Peng, Zhen Huang, Pengfei Fang

Author information

Di Zhang
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Zheng Wang
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co Ltd, Guangzhou, China
Yue Yang
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Jingjing Li
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Chunqing He
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Ning Qi
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China
Xiangyang Peng
Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co Ltd, Guangzhou, China
Zhen Huang
Guangdong Key Laboratory of Electric Power Equipment Reliability, Electric Power Research Institute of Guangdong Power Grid Co Ltd, Guangzhou, China
Pengfei Fang
Department of Physics and Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan 430072, China

CONFERENCE PROCEEDINGS OPEN ACCESS

Details

Abstract

In this paper, the free volumes and water barrier property of silicone rubber with different weight ratios of aluminum hydroxide (ATH) were studied by positron annihilation lifetime spectroscopy (PALS) and electrochemical impedance spectroscopy (EIS). PALS data indicate that the o-Ps intensity (I₃) decreased linearly as a function of the ATH content in silicone rubber. It was found that o-Ps are mainly formed and annihilated in the silicone rubber matrix, polydimethylsiloxane (PDMS), and are not formed in the ATH particles. The value of I₃ can thus serve as a PDMS composition characteristic in silicone rubber. When the content of ATH is more than 45.3 wt.% (I₃ ∼ 9.34%), the ATH particles percolate in the bulk of silicone rubber, resulting the failure of sample’s water barrier property.

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