不同温度下胶粘剂粘接接头表界面元素变化行为的EDX分析

EDX 是一种研究粘接接头和聚合物基复合材料表界面性能的分析测试方法。利用EDX 对粘接接头表界面主要元素变化行为进行分析研究, 表明C/ C 复合材料从常温到900 ℃, Z 向的碳元素含量始终低于X 、Y向, 这是由C/ C 复合材料的性质决定的。粘接接头的破坏形式, 是由常温的C/ C 复合材料破坏转变为200 ℃及其以上温度的胶粘剂内聚破坏的。C/ C 复合材料和胶粘剂表面碳、硅和氧元素变化表明: 当温度低于550 ℃ 时,C/ C 复合材料和胶粘剂的热分解速率相似; 当温度高于550 ℃时, 胶粘剂的热分解速率明显快于C/ C 复合材料。 

ANALYSIS OF ELEMENTS CONTENT ON ADHESIVE JOINT SURFACE AND I NTERFACE WITH ENERGY DISPERSIVE X-RAY SPECTROSCOPY

Energy dispersive X-ray spectroscopy (EDX) is a kind of analysis method used in researching the adhesive joint and polymer composite surface and interface characters The changes of the adhesive/carbon-carbon composite joint surface and interface at different temperatures were researched by EDX The results indicate that carbon element content on C-C composite surface in Z direction is less than that in X and Y directions from room temperature to 900℃, which was decided by the characters of C-C composite The break form of the adhesive/carbon-carbon composite joint is changed from C-C composite break at room temperature into adhesive break at higher than 200℃ The changes of carbon, oxygen and silicon elements content on the adhesive and C-C composites surface indicate that the heat decomposition speed of the adhesive is almost the same as that of C-C composite under 550℃，but above 550℃ the adhesive decomposition speed is faster than that of C-C composites