Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black  

作　　者：ZHANG Jihua CHEN Fengbo ZHAO Yunfeng LIU Mingjie 

机构地区：[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

出　　处：《Chemical Research in Chinese Universities》2019年第6期1124-1132,共9页高等学校化学研究（英文版）

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 Sillicone rubber 

分 类 号：TB3[一般工业技术—材料科学与工程]