Effect of CO_2 Gas on the Swelling and Tribological Behaviors of NBR Rubber in Water

查看全文 作　　者：Xiaoren [1]Lv;Shuyuan [1]Song;Huiming [1]Wang;Shijie [1]Wang

机构地区：[1]School of Mechanical Engineering,Shenyang University of Technology

出　　处：《Journal of Materials Science & Technology》索引2015年第31卷第12期,共7页

基　　金：financially supported,in part,by the National Natural Science Foundation of China (No.50878178);the Natural Science Foundation of Liaoning Province,China (No.2013020039);the Science and Technology Program of Shenyang Municipality,China (No.F13-077-2-00) 摘　　要：The swelling and tribological behaviors of nitrile-butadience(NBR) rubbers with three acrylonitrile contents(N18,N26 and N41) in water with different CO_2 gas flows are investigated by immersion and wear experiments.The results show that the bubbles of CO_2 into water severely destroy the cross-linking network of rubber and form defects on the surface,such as cracks,holes and lamellar perks.These defects lead to an increase in the static and dynamic swelling increment.The dynamic swelling increment is almost three or four times larger than the static swelling increment.The hardness and wear resistance of rubbers in water with CO_2 gas remarkably decreases in contrast to that in water,and they gradually decrease with an increase in the gas flow in water.The bubbles of CO_2 decrease the steady frictional coefficient of rubber in water due to the presence of the gas in water lubricant film.The steady frictional coefficient in water with different CO_2 gas flow basically remains 0.1.N41 with high acrylonitrile content shows better swelling and wear resistances than N18 and N26 because of its dense molecular network. 关键词：CO2气体摩擦学性能丁腈橡胶气水溶胀丙烯腈含量气体流量摩擦系数

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Effect of CO_2 Gas on the Swelling and Tribological Behaviors of NBR Rubber in Water

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