成型压力对EPDM绝热层性能影响研究  

Study on the Influence of Molding Pressure on the Performance of Ethylene Propylene Diene Monomer(EPDM)Insulation

作　　者：凌玲[1] 严文聪[2] 隋琦[1] 陈雯[1] 任雯君 LING Ling;YAN Wencong;SUI Qi;CHEN Wen;REN Wenjun(Hubei Institute of Aerospace Chemical Technology,Xiangyang 441003;Xi′an Aerospace Composites Research Institute,Xi′an 710025)

机构地区：[1]湖北航天化学技术研究所,襄阳441003 [2]西安航天复合材料研究所,西安710025

出　　处：《宇航材料工艺》2023年第6期98-102,共5页Aerospace Materials & Technology

摘　　要：为了减少复合材料壳体成型缺陷并优化壳体缠绕工艺,本文采用显微镜观察了较低硫化成型压力下EPDM绝热层内部致密性的变化情况,研究了硫化成型压力对EPDM绝热层本体性能和界面粘接性能的影响规律。结果表明,当成型压力小于0.15 MPa时,硫化后绝热层的内部不致密,存在较多孔隙,表现为密度、力学性能和烧蚀性能均较低;随着硫化成型压力增加,孔隙率逐渐减少直至消失,本体性能和界面粘接性能亦达到一个较高的稳定值,满足使用要求。In order to reduce the molding defects of composite shell and optimize the winding process,the change of internal porosity of EPDM insulation under lower vulcanization molding pressures was observed by microscope.Influence of vulcanization molding pressure on the body performance and interface bonding performance of EPDM insulation was studied.The results show that,when the vulcanization molding pressure is less than 0.15 MPa,there are more pores in the insulation after vulcanization with lower density,mechanical properties and ablative properties.With the increase of molding pressure,insulation porosity gradually decreases.Insulation performance and interface bonding reach a high stable value to meet the requirements of use.

关 键 词：EPDM绝热层 性能 成型压力 

分 类 号：V255[一般工业技术—材料科学与工程]