LDA/Kevlar对RTV硅橡胶绝热层材料性能影响

摘要

在以室温硫化(RTV)硅橡胶为基的低特征信号绝热层材料研制过程中，选用了高含氮物质联二脲(LDA)和有机纤维Kevlar作为阻燃消烟剂。试验结果表明，无论是单独使用，还是复配使用，随着配方中联二脲和Kevlar含量的增加，绝热层材料对激光、可见光、红外信号的透过率得到提高，材料的力学性能(拉伸强度和伸长率)则下降。%The flame retardant of LDA and organic fiber-Kevelar are selected during the development of low signal insulation. The basic material of insulation is RTV silicone rubber. The results show that with the increasing of LDA and/or Kevelar in the insulation,the insulation′s signature penetrating rate of laser,visible light,infrared ray can be increased,but it′s mechanical properties decrease.