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Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

  • Jihua ZhangEmail author
  • Fengbo Chen
  • Yunfeng Zhao
  • Mingjie Liu
Article
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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.

Keywords

Conductivity Carbon black Elasticity Electromagnetic shielding Silicone rubber 

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Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

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Copyright information

© Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH 2019

Authors and Affiliations

  • Jihua Zhang
    • 1
    Email author
  • Fengbo Chen
    • 1
  • Yunfeng Zhao
    • 1
  • Mingjie Liu
    • 2
  1. 1.Aerospace Research Institute of Material and Processing TechnologyBeijingP. R. China
  2. 2.Key Laboratory of Bio-inspired Smart Interfacial Science and Technology, Ministry of Education, School of ChemistryBeihang UniversityBeijingP. R. China

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