超声波在线表征MVQ/EVA复合材料的交联过程  

Ultrasonic On-line Characterization of MVQ/EVA Composite Cross-linking

作　　者：井龙 王克俭[1] 黄艳华 王鹏 姬岩岩 谢超杰 贾志诚 Jing Long;Wang Kejian;Huang Yanhua;Wang Peng;Ji Yanyan;Xie Chaojie;Jia Zhicheng(College of Mechanical and Electrical Engineering,Beijing University of Chemical and Technology,Beijing 100029,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]中国航发北京航空材料研究院,北京100095

出　　处：《航空科学技术》2018年第8期75-78,共4页Aeronautical Science & Technology

基　　金：航空科学基金(201535S9001)~~

摘　　要：通过安装超声探头的无转子硫化仪监测硅橡胶(MVQ)/乙烯—醋酸—乙烯酯共聚物(EVA)复合材料的交联过程得到了声速和扭矩曲线,对比其相似性提出了超声波表征MVQ/EVA复合材料硫化历程的方法,指出超声波对微观结构和密实度变化更加灵敏。采用压力—体积—温度(PVT)—超声波检测装置同步测试了MVQ/EVA复合材料的比容和声速,通过直线拟合法得到了声速与比容之间的定量关系式,以此为基础可以在线监测超声波信号而预估比容值和橡胶硫化进程。The cross-linking process of silicone rubber （MVQ）/ethylene-vinyl acetate copolymer （EVA） composites was monitored by a rotodess curing rheometer equipped with an ultrasonic probes to obtain the torque and the sound velocity curves. The method of ultrasonic characterization of MVQ/EVA vulcanization was proposed in comparison with the one by torque curve. It was pointed out that ultrasonic wave was sensitive to the changes in compactness and microstructure. The specific volume and sound velocity of the MVQ/EVA composites were measured simultaneously using a Pressure-Volume-Temperature （PVT） -ultrasonic testing device. The quantitative relationship between sound velocity and specific volume was obtained when fitting them by linear equation. Further, monitoring the ultrasonic transmission signal in rubber can estimate the specific volume and vulcanization process.

关 键 词：超声波表征 硅橡胶(MVQ) 硫化仪 声速 比容 

分 类 号：TB332[一般工业技术—材料科学与工程]