航空有机玻璃热老化失重分析和暴露时间估计方法  

Weight Loss Analysis and Exposure Time Estimation Method of Aviation PMMA after Thermal Aging

作　　者：邓立伟[1] 陈新文[1] 李晓骏[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《装备环境工程》2010年第6期143-145,共3页Equipment Environmental Engineering

摘　　要：对YB-DM-11航空有机玻璃在4个温度点下进行了热老化试验,每个温度点的试验分别设定4个不同的暴露时间。通过试验得出该材料在不同热环境下的质量保持率、温度和暴露时间。在此基础上,通过回归分析确定质量保持率和时间对数的关系,进而得出了质量保持率一定时时间对数与热力学温度倒数关系的回归方程。最后利用回归方程得到了在所选温度下达到给定质量保持率的估计时间。Four exposure temperatures at each of which four different exposure times were selected,were used for the thermal aging of YB-DM-11 aircraft PMMA.Data of mass retention,temperature and exposure time were obtained according to the thermal aging test.On the basis of that,relationships between mass retention and logarithm of exposure time were determined by the regression analysis;furthermore,regression equation defining the log time/reciprocal temperature relationship was obtained by linear regression analysis.Finally,estimated time to produce the defined mass retention was calculated using regression equation for the selected temperature.

关 键 词：有机玻璃 热老化 失重 估计方法 

分 类 号：TB302.1[一般工业技术—材料科学与工程]