Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

doi:10.1007/s40242-019-9057-x

高等学校化学研究 ›› 2019, Vol. 35 ›› Issue (6): 1124-1132.doi: 10.1007/s40242-019-9057-x

• Articles • 上一篇

Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

ZHANG Jihua¹, CHEN Fengbo¹, ZHAO Yunfeng¹, LIU Mingjie²

1. Aerospace Research Institute of Material and Processing Technology, Beijing 100076, P. R. China;
2. Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China

收稿日期:2019-02-28 修回日期:2019-07-24 出版日期:2019-12-01 发布日期:2019-11-29
通讯作者: ZHANG Jihua E-mail:zjhicca@iccas.ac.cn

Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

ZHANG Jihua¹, CHEN Fengbo¹, ZHAO Yunfeng¹, LIU Mingjie²

1. Aerospace Research Institute of Material and Processing Technology, Beijing 100076, P. R. China;
2. Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China

Received:2019-02-28 Revised:2019-07-24 Online:2019-12-01 Published:2019-11-29
Contact: ZHANG Jihua E-mail:zjhicca@iccas.ac.cn

摘要/Abstract

摘要： Carbon black-based conductive rubber composites have important impacts on electromagnetic interference(EMI) shielding applications. However, an excessive amount of carbon black in the recipes of these conductive rubbers has caused their weak elasticity. Herein, hollow carbon black(HCB) particles were used to tune the elasticity of conductive rubber composites. Unique hollow morphology produced a better compression recovery of HCB than other solid carbon black, such as acetylene black. When the coupling agent was bonded to HCB, their conductive silicone rubber composites were featured by high stretching resilience, a fast compression recovery and excellent conductivity to satisfy the electromagnetic interference shielding requirements. Importantly, the rubber composites with coupling HCB had extremely low variations of mechanical property, conductivity and EMI shielding effectiveness after thermal accelerated aging tests. It is therefore revealed that the elasticity of HCB and its interfacial chemical coupling with rubber chains both play crucial roles in adjusting the elasticity of conductive rubber to sever long-term EMI protection.

关键词: Conductivity, Carbon black, Elasticity, Electromagnetic shielding, Silicone rubber

Abstract: Carbon black-based conductive rubber composites have important impacts on electromagnetic interference(EMI) shielding applications. However, an excessive amount of carbon black in the recipes of these conductive rubbers has caused their weak elasticity. Herein, hollow carbon black(HCB) particles were used to tune the elasticity of conductive rubber composites. Unique hollow morphology produced a better compression recovery of HCB than other solid carbon black, such as acetylene black. When the coupling agent was bonded to HCB, their conductive silicone rubber composites were featured by high stretching resilience, a fast compression recovery and excellent conductivity to satisfy the electromagnetic interference shielding requirements. Importantly, the rubber composites with coupling HCB had extremely low variations of mechanical property, conductivity and EMI shielding effectiveness after thermal accelerated aging tests. It is therefore revealed that the elasticity of HCB and its interfacial chemical coupling with rubber chains both play crucial roles in adjusting the elasticity of conductive rubber to sever long-term EMI protection.

Key words: Conductivity, Carbon black, Elasticity, Electromagnetic shielding, Silicone rubber

ZHANG Jihua, CHEN Fengbo, ZHAO Yunfeng, LIU Mingjie. Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black[J]. 高等学校化学研究, 2019, 35(6): 1124-1132.

ZHANG Jihua, CHEN Fengbo, ZHAO Yunfeng, LIU Mingjie. Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black[J]. Chemical Research in Chinese Universities, 2019, 35(6): 1124-1132.

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Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

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