石英纤维增强苯并噁嗪树脂复合材料研究  

A Study on Quartz Fiber Reinforced Benzoxazine Resin Composites

作　　者：尹昌平[1] 肖加余[1] 李建伟[1] 刘钧[1] 曾竟成[1] 江大志[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2008年第5期25-28,33,共5页Journal of National University of Defense Technology

基　　金：国家部委基金资助项目

摘　　要：对苯并噁嗪树脂应用于RTM工艺制备石英纤维增强复合材料进行了研究。系统考察了该树脂的工艺性能及力学性能，制备并测试了石英，苯并噁嗪复合材料的力学性能及耐烧蚀性能，并将相关性能与钡酚醛与石英／钡酚醛进行了比较。结果表明，在85℃-145℃温度区间内苯并噁嗪树脂粘度保持在800mPa·s以下，树脂具有较宽的低粘度温度平台和较长的低粘度保持时间。力学性能及耐烧蚀性能研究表明，石英／苯并噁嗪复合材料的层间剪切强达到了61．5MPa，拉伸强度和弯曲强度显著优于石英，钡酚醛复合材料，质量烧蚀率和线烧蚀率分别为0．0510g·s^-1和0．032mm·s^-1。石英／苯并噁嗪复合材料是一种可采用RTM工艺制备的耐烧蚀材料。Benzoxazine resin is used to fabricate quartz fiber reinforced composites by RTM process in the paper. The processing properties and mechanical performances of benzoxazine resin are studied systematically, and quartz/benzoxazine resin composites are manufactured by RTM to test their mechanical performances and ablation properties. Some properties are compared with those of bariumphenolic resin and its quartz fiber composites. The results show that benzoxazine resin maintains low-viscesity less than 800mPa.s in the range from 85℃ to 145v, and has a wide low-viscosity temperature window and a long low-viscosity keeping time. The interlaminar shear strength（ILSS） of quartz/benzoxazine resin composites reaches 61.5MPa, the tensile strength and the flexural strength are more excenent than those of quartz/barium-phenolic resin composites. The mass ablation rate and line ablation rate of quartz/benzoxazine composites reach 0.0510g（s^-1 and 0.032mm（s^-1 , respectively. Quartz/benzoxazine resin composites can be used as ablative materials and fabricated by RTM process.

关 键 词：树脂传递模塑 石英纤维 苯并噁嗪树脂 钡酚醛 

分 类 号：TB332[一般工业技术—材料科学与工程]