RTM工艺用耐高温树脂研制

摘要

Heat-resistant resin for RTM process is prepared,which could be used for missile radomes.Viscosity of the resin is only obout 200 mPa· s after 8 h at 100℃,which is very suitable for RTM process.The cured resin has good heat resistance with Ts of 269℃ and weight loss of 10% at 430℃.Flexual strength of 139 MPa and modulus of 9.5 GPa at 300℃ is obtained for quartz fiber/resin composite,which could be used for a short term at this temperature.%以某飞行器透波结构件对材料的要求为背景，研制了可用于RTM成形工艺的耐高温树脂SH。SH树脂l00℃下8 h后粘度仅200 mpa·s，适于RTM工艺成形;该树脂耐热性良好，玻璃化转变温度Tg为269℃,430℃热失重仅为10％；石英纤维/SH树脂复合材料300℃时的弯曲强度σb=139 MPa，弯曲模量Eb=9.5 GPa，可在300℃以上短时使用。