聚碳酸酯冲击力学响应规律及防暴性能研究  

Impact mechanical response and anti-violence property of polycarbonate

作　　者：杨杰[1] 文弋[1] 邱日祥[1] 

机构地区：[1]公安部第一研究所,北京100048

出　　处：《兵器材料科学与工程》2014年第5期88-91,共4页Ordnance Material Science and Engineering

摘　　要：对聚碳酸酯的冲击力学性能进行研究,分析其破坏和防护机理,并对防暴性能进行研究。结果表明:聚碳酸酯的压缩应力-应变曲线分为弹性区和屈服区;聚碳酸酯表现出明显的应变率强化效应,其压缩强度和吸能能力随着应变率的增加而增大;低温条件下聚碳酸酯冲击韧性大幅下降,出现脆性断裂,防暴能力有所下降;聚碳酸酯的冲击韧性较好,在受到冲击时可以发生变形并吸收冲击能量,且冲击失效应变较大,因此可以很好地应用在防暴领域。The impact mechanical properties of polycarbonate were investigated and the failure mechanism together with protectivemechanism of polycarbonate was analyzed. Anti-violence property of polycarbonate was also studied. Results show that thecompressive stress-strain curves of polycarbonate contain two regions：an elastic region and a yield region. The compressivebehaviors of polycarbonate display a remarkable strain rate strengthening effect. The compressive strength and energy absorptionof polycarbonate at high strain rate is higher than that at low strain rate. At low temperature,the impact toughness ofpolycarbonate decreases obviously,polycarbonate shows brittle fracture phenomenon and the anti-violence property decreases.Under impact,due to its higher impact toughness,the deformation of polycarbonate consumes a lot of impact energy and thefracture strain of polycarbonate is very high. Polycarbonate can be applied in antiviolence field.

关 键 词：聚碳酸酯 冲击力学响应规律 防护机理 防暴性能 

分 类 号：TB32[一般工业技术—材料科学与工程]