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含能材料  2013 

短切纤维对RDX/TNT熔铸炸药的力学改性

DOI: 10.3969/j.issn.1006-9941.2013.06.019

Keywords: 固体力学,熔铸炸药,力学性能,短切纤维

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Abstract:

采用玻璃纤维、聚酯纤维、铝纤维、碳纤维4种短切纤维作熔铸炸药力学性能改性剂,研究了压缩、拉伸力学实验中短切纤维的种类、添加量和长度对RDX/TNT65/35熔铸炸药力学性能的影响。结果表明,聚酯纤维对压缩强度的改善效果最佳,添加量为0.4%时压缩强度达27.94MPa。铝纤维会显著降低炸药的拉伸强度和拉伸延伸率。玻璃纤维添加量为0.2%时拉伸、压缩力学性能均低于不掺杂纤维材料的RDX/TNT65/35熔铸炸药。添加量在0.2%~1.0%时,65/35-RDX/TNT的压缩力学性能随玻璃纤维用量的增加而升高。添加量分别为0.01%和0.05%时,使用3mm碳纤维的炸药拉伸力学性能好于使用6mm碳纤维,掺杂0.05%3mm碳纤维的炸药各项拉伸力学性能最好。

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