纳米SIO2气凝胶毡与高强聚乙烯复合抗弹结构隔热性能研究

为探讨新型复合装甲在舰船发生火灾时高温对气凝胶毡保护的高强聚乙烯的影响规律,以及在A60标准条件下高强聚乙烯免受高温影响所需气凝胶毡的厚度,设计了不同厚度的气凝胶毡与高强聚乙烯夹芯防护结构,借助有限元软件Ansys14.0对其温度场进行了数值模拟,并与实验结果进行对比分析.结果表明:实验结果与数值仿真计算结果较吻合;气凝胶毡面火层温度梯度较大,向背火层方向依次减小,SiO2气凝胶毡具有很好的隔温效果;该防护结构达到A60热防护要所需SiO2气凝胶毡的厚度约为21.8 mm.

The simulation analysis of composite annor structure heat insulation performance of different thickness of silicate Aero-gel and high strength polyethylene

In order to explore the influence of new type composite armor in high temperature fire to protect high strength polyethylene from silicate Aero-gel. And the requirement of silicate Aero-gel for protecting high strength polyethyl-ene from high temperature in A60 standard condition. Designed the sandwich armor structure using different thickness of silicate Aero-gel and high strength polyethylene, which used finite element software Ansys14.0 to analysis the temperature field. and compared the simulation results with experimental results. The results show that :the experimental results and sim-ulation results are in good agreement; the reduce of temperature gradient from the surface toward fire to the surface back-ward fire indicate the good effect of silicate Aero-gel in temperature compartment; the armor structure to achieve the A60 standard needs a thickness of silicate Aero-gel as 21.8mm.