T300/648复合材料的湿热老化行为
Hygrothermal Aging Behavior of T300/648 Composite
摘 要
在四种环境(温度71 ℃、相对湿度70%,温度71 ℃、相对湿度85%,温度85 ℃、相对湿度70%,温度85 ℃、相对湿度85%)下,对单向铺层的T300／648复合材料进行0~9 000 h的吸湿试验,研究了复合材料的吸湿特性、玻璃化转变温度、储能模量、化学结构以及树脂与纤维的界面形貌.结果表明:复合材料的吸湿曲线先呈线性增长,后逐渐趋于平缓,且温度越高、相对湿度越大,吸湿量越大;随着老化时间延长,树脂与纤维的界面发生弱化,但复合材料的化学结构没有明显变化,玻璃化转变温度和储能模量不断下降;吸湿量是影响玻璃化转变温度的主要因素,而界面性能则是影响力学性能的主要因素.
湿热老化
动态热力学性能
吸湿曲线
composite
hygrothermal aging
dynamic thermo-mechanical property
hygroscopic curve
Abstract
Some moisture absorption tests were carried on one-way fiber-up T300/648 composite in four kinds of environment(temperature of 71 ℃ and relative humidity of 70%,temperature of 71 ℃ and relative humidity of 85%,temperature of 85 ℃ and relative humidity of 70%,temperature of 85 ℃ and relative humidity of 85%).The moisture time was 0-9 000 h,and the moisture absorption characteristics,glass-transition temperature,storage modulus,chemical structure and the interface morphology between resin and fiber were studied.The results show that the moisture absorption curves exhibited linear growth and then became flat.The moisture absorption capacity was higher in the environment of higher temperature and relative humidity.With the increase of aging time,the interface between resin and fiber weaken,but the chemical structure of the composite had little changes,and the glass-transition temperature and storage modulus decreased gradually.Moisture absorption capacity is the main factor influencing the glass-transition temperature,and the interface property is the main factor influencing the mechanical properties.
中图分类号 TB33 DOI 10.11973/jxgccl201507009
所属栏目 试验研究
基金项目
收稿日期 2014/2/28
修改稿日期 2015/2/12
网络出版日期
作者单位点击查看
备注王占彬(1983-),男,河北邢台人,工程师,硕士.
引用该论文: WANG Zhan-bin,ZHANG Tian-jiao,FAN Jin-juan,HUANG Chao. Hygrothermal Aging Behavior of T300/648 Composite[J]. Materials for mechancial engineering, 2015, 39(7): 44～47
王占彬,张天骄,范金娟,黄超. T300/648复合材料的湿热老化行为[J]. 机械工程材料, 2015, 39(7): 44～47
被引情况:
【1】李乐坤,李曙林,常飞,张铁军,石晓朋, "碳纤维增强树脂基复合材料的热膨胀行为",机械工程材料 40, 97-101(2016)
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