用于RTM工艺的烧蚀树脂及其复合材料

根据烧蚀防热复合材料RTM制备技术对树脂的要求,研究了一种适合于RTM工艺的无溶剂高残碳烧蚀树脂及其法向增强复合材料,详细讨论了树脂的黏度-温度特性、耐热性能、烧蚀性能及烧蚀复合材料的力学性能、热物理性能,并对制备的烧蚀防热材料构件进行了固体发动机热试车考核。结果表明:采用多环芳香酚改性的高邻位酚醛树脂工艺适用期长达120min、残碳率达67. 1%,使用该树脂制备的几种法向增强的复合材料层剪强度达39. 3MPa以上;该类树脂基烧蚀防热材料可作为固体火箭发动机扩张段的标准材料。

Ablative Resin for RTM and Its Composites

According to the requirement of resin for ablated heat-resistant composites by RTM process,a solvent-free high residual carbon ablative resin for RTM process and its normal reinforced composites were studied.The viscosity-temperature characteristics,heat resistance,ablative properties,mechanical properties and thermal-physical properties of composites were discussed in detail,and the thermal test of solid rocket egine was carried out for the components of ablative material by RTM.Experimential results show that RTM process applicable period of this ablative resin is as long as 120 mins,its carbon residue rate is 67.1%,interlayer shear strength of the normal reinforced composites is 39.3 MPa.It shows good characteristics of solid rocket egine exiting section materials.