玻璃钢/复合材料Issue(6)：80-84,5.
三维角联锁复合材料弯曲性能的热老化特征
CHARACTERISTICS OF THERMAL AGING ON BENDING PROPERTIES OF 3-D INTERLOCK COMPOSITE MATERIAL
摘要
Abstract
In this paper,the bending properties of 3-D carbon/epoxy interlock composite unaged and aged for 16-days at different temperature (90 ℃,110 ℃,180 ℃) were studied by quasi-static loading.The influences of aging temperature on bending properties were observed by macroscopic observation and SEM as well.The influences of aging temperature on epoxy properties,post-curing,heat flow and chemical structure were studied by differential scanning calorimetry (DSC) and infrared spectrum (IR Spectrum),respectively.The result indicated as follows.The post-curing and thermal degradation can be found in epoxy aging at the same time.For Composite aged for 16 days,the bending strength of composite aged at 90 ℃ increased obviously because the post-curing of epoxy play an important role in aging.When composite aged at 110 ℃,the bending strength decreased unobviously which were caused by slightly thermal degradation.For composite aged at 180 ℃,the bending strength declined distinctly and the flexural modulus decreased as well due to the strong thermal degradation of the epoxy resin and the fiber/resin interface crack which were observed by SEM.In addition,less damage area on top of composite aged at 90 ℃ than others could be found form the damage photographs.These were consistent with the strength characteristics which indicated in above situation that composite aged at 90 ℃ had better bending properties.关键词
高温老化/环氧树脂DSC与红外分析/三维角联锁复合材料/弯曲性能Key words
isothermal aging/3-D angle-interlock woven composites/DSC and IR spectrum/bending properties分类
通用工业技术引用本文复制引用
王明玲,曹淼,顾伯洪,孙宝忠..三维角联锁复合材料弯曲性能的热老化特征[J].玻璃钢/复合材料,2017,(6):80-84,5.
