聚四氟乙烯包覆丁腈橡胶的耐高温航空煤油性能  

Resistance of Nitrile Butadiene-acrylonitrile Rubber Covered with Polytetrafluoroethylene to High-temperature Aviation Kerosene

作　　者：陈芳芳[1] 孟江燕[1] 王运平 何金晶 

机构地区：[1]无损检测技术教育部重点实验室(南昌航空大学),南昌330063 [2]西安航空动力控制科技有限责任公司,西安710077 [3]贵州贵航飞机设计研究所,贵州安顺561000

出　　处：《失效分析与预防》2016年第4期212-217,共6页Failure Analysis and Prevention

基　　金：中航工业产学研专项项目(cxy2013CH18);黔安局军合[2014]03号

摘　　要：本研究利用聚四氟乙烯(PTFE)的耐介质性,并采用低温等离子体(LTP)处理对PTFE薄膜和丁腈橡胶(NBR5080)混炼胶进行了表面改性,再用高温胶黏剂粘接工艺制备了PTFE薄膜包覆的NBR5080硫化胶,测试了NBR5080包覆前后在100℃高温航空煤油中性能变化,对比分析了表面包覆PTFE对NBR5080耐高温航空煤油性能的影响。结果表明:随试验时间的延长,未包覆的NBR5080的质量、尺寸先增加后趋于稳定,微观形貌变化明显,拉伸强度、断裂伸长率显著下降;包覆了PTFE的NBR5080的质量、尺寸基本不变,微观形貌变化较不明显,拉伸强度、断裂伸长率出现较小的降低幅度。表面包覆PTFE薄膜能够保护丁腈橡胶,使其耐高温航空煤油性能有所提高。Polytetrafluoroethylene（ PTFE） has good medium resistance. To take advantage of this property,PTFE film and NBR5080 were modified by low temperature plasma treatment technology,and then NBR5080 was covered with PTFE film through high temperature adhesive bonding process. Relevant performances of uncovered and covered NBR5080 were tested,and the effect of PTFE coverage on the high temperature aviation kerosene resistance NBR5080 was analyzed. The results indicate that with the experiment time increasing,the mass and dimension of uncovered NBR5080 increased in the early stage and then remained steady,the micro morphology changed significantly,and the tensile strength and elongation declined significantly. As for covered NBR5080,the mass and dimension almost had no change,the micro morphology changed slightly,and the tensile strength and elongation also declined slightly. Surface coverage with PTFE can protect the nitrile rubber and thus improve its high-temperature aviation kerosene resistance.

关 键 词：聚四氟乙烯 包覆 丁腈橡胶 航空煤油 力学性能 

分 类 号：TQ333.7[化学工程—橡胶工业]