对增加了表面防护层的国产碳纤维/增韧环氧树脂CCF300/5228A层板的低速冲击及冲击后压缩性能进行了试验研究.通过落锤式低速冲击试验,得到了各组层板的冲击接触力历程、凹坑深度和内部分层面积等特征,而冲击后压缩试验结果可用来对各组层板的损伤容限性能进行评估.结果表明,同裸板相比,加了表面防护层的层板其分层起始载荷变化不大,但形成同样的1.0mm凹坑所需的冲击能量增大了24％～46％.而对于内部分层,在一定的冲击能量范围下,加表面防护层的层板的C扫分层面积比裸板减小了20％～50％,而在同样凹坑深度的情况下,层板在加了表面防护层之后分层面积变化不大.冲击后压缩性能与内部分层情况具有较大的关联性,同样冲击能量下分层面积较小的各组带表面防护层板,其冲击后压缩强度和破坏应变相对于裸板的提高在15％～50％之间,而在凹坑深度相同的情况下,二者的冲击后压缩强度和破坏应变相差不大.
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