摘要
高温高湿条件下对玻璃纤维/碳纤维混杂增强环氧树脂复合材料电缆芯进行加速湿热老化试验,比较了两种直径的复合材料电缆芯在相同老化条件下的力学性能,并从微观角度分析了湿热老化后力学性能下降的原因。结果表明,该复合材料电缆芯耐湿热老化性能较好,在80℃及RH95%下老化1750h后其弯曲强度保留率大于65%,层间剪切强度保留率大于58%。
Accelerated hygrothermal aging test is conducted on the cable cores of glass fiber and carbon fiber hybrids reinforced epoxy composites under conditions of high temperature and high humidity. Bending and shear properties of the hybrid fiber composite rods with 6. 5mm and 8.5mm in diameter are investigated respectively under the same aging conditions. Meanwhile, the mechanism of degradation of the composite properties is analyzed on the microscopic scale. Experimental results indicate that the cable cores of the hybrid fiber composites have good aging property. The residual bending strength of the hybrid fiber composites is more than 65% of the original one and the residual shear strength is more than 58% after the accelerated aging for 1750 hours at 80℃ and RH95%.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2007年第1期42-45,共4页
Fiber Reinforced Plastics/Composites
关键词
混杂纤维
环氧树脂
电缆芯
加速湿热老化
力学性能
hybrid fiber
epoxy resin
cable core
accelerated hygrothermal aging
mechanical properties
