玻璃纤维/酚醛材料的热氧老化对热物性的影响及机理研究  

EFFECT OF ACCELERATED THERMO-OXIDATIVE AGING ON THERMAL PHYSICS PROPERTIES OF GLASS FIBER / PHENOL COMPOSITES

作　　者：杨阳[1] 王璇[1] 章妮[1] 王影[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《玻璃钢／复合材料》2016年第9期102-104,32,共4页Fiber Reinforced Plastics/Composites

摘　　要：对玻璃纤维增强酚醛树脂基复合材料进行130℃加速热氧老化,分别在老化前、老化30 d、60 d、90 d、120 d时,进行热物理性能测试,对老化前和老化120 d的材料进行SEM试验和IR试验。结果表明,老化初期,材料的平均线胀系数和平均比热容随时间延长先降低后提高再下降;复合材料的热导率性能在整个老化期间变化不明显。复合材料发生物理老化和化学老化。Accelerated thermo-oxidative aging on glass fiber / phenol composite materials was performed at 130℃,and the thermal physical properties were tested,30 days,60 days,90 days,and 120 days before aging test,respectively. IR spectroscopy and SEM were organized before aging and after aging for 120 days. The results show that the linear thermal expansion coefficients and specific heat capacity decrease,and then increase,and decrease again. Thermal conductivity has no change during the whole aging time. Physical aging exists all the time,and chemistry aging arises after 120 days.

关 键 词：热氧老化 热物理性能 SEM IR分析 

分 类 号：TB332[一般工业技术—材料科学与工程]