Yan WU
,
Weihong ZHONG
,
Zhijie SUN
,
Abdolghane Torki
,
Zuoguang ZHANG
材料科学技术（英）
The aramid fiber/UHMWPE (ultrahigh molecular weight polyethylene) fiber hybrid composites (AF/DF) were ma-nufactured. By Charpy impact, the low velocity impact behavior of AF/DF composite was studied. And the high velocity impact behavior under ballistic impact was also investigated. The influence of hybrid ratio on the performances of low and high velocity impact was analyzed, and hybrid structures with good impact properties under low velocity impact and high velocity were optimized. For Charpy impact, the maximal impact load increased with the accretion of the AF layers for AF/DF hybrid composites. The total impact power was reduced with the decrease of DF layers and the delamination can result in the increase of total impact power. For ballistic impact, the DF ballistic performance was better than that of the AF and the hybrid ratio had a crucial influence. The failure morphology of AF/DF hybrid composite under Charpy impact and ballistic impact was analyzed. The AF/DF hybrid composites in suitable hybrid ratio could attain better performance than AF or DF composites.
关键词:
Aramid fiber
,
null
,
null
,
null
张承双
,
崔霞
,
李翠云
,
王百亚
,
张阳
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2015.02.007
研究了PBO纤维与T700碳纤维混杂复合材料的界面性能和压力容器性能.采用层间剪切强度测试和吸水率测试研究了不同混杂比对混杂复合材料界面粘接性能和吸水性能的影响.研制了PBO纤维与T700碳纤维混杂复合材料φ150 mm压力容器,对容器的水压爆破性能和轴压承栽性能进行了测试.结果表明:混杂复合材料的层间剪切强度随着混杂比增大逐渐升高,当T700碳纤维含量较低时,混杂复合材料界面粘接性能提高并不明显;混杂复合材料的吸水率介于PBO纤维和T700碳纤维复合材料之间,近似符合“混合定律”,界面数对混杂复合材料吸水性影响较大;混杂复合材料φ150 mm容器的PV/W随着混杂比增大逐渐降低,混杂工艺能够使PBO纤维复合材料容器的轴压承载性能提高31％.
关键词:
PBO纤维
,
碳纤维
,
混杂复合材料
,
界面性能
,
压力容器
