CAJ | 학술논문

对YB-DM-11航空有机玻璃试样在254nm和313nm两种波长的紫外光照射下,进行了2个月的加速老化试验,跟踪测试了有机玻璃的抗拉强度和重量变化规律.通过红外光谱(FTIR)、热分析(TG/DTA)、扫描电镜(SEM)和凝胶渗透色谱(GPC)等方法,分析了老化前后试样的结构和性能,结合老化前后有机玻璃的性能变化规律,揭示了有机玻璃在紫外光照射下的老化机理.
대YB-DM-11항공유궤파리시양재254nm화313nm량충파장적자외광조사하,진행료2개월적가속노화시험,근종측시료유궤파리적항랍강도화중량변화규률.통과홍외광보(FTIR)、열분석(TG/DTA)、소묘전경(SEM)화응효삼투색보(GPC)등방법,분석료노화전후시양적결구화성능,결합노화전후유궤파리적성능변화규률,게시료유궤파리재자외광조사하적노화궤리.
The accelerated ageing experiment of Perspex (PMMA) YB-DM-11 were done for nearly two months in both 254nm and 313nm wave length ultraviolet. Tensile stress and mass were measured during the experiment. Thus the changing rules of both parameters were obtained. The samples structure difference were founded between before ageing and after ageing by methods of IR, TG/DTA,GPC and SEM. Analyzed results above all, the ageing mechanisms of PMMA in ultraviolet were clarified qualitatively.