摘要
新型高速巡航导弹要求材料能承受650℃左右的高温,目前所用的聚酰亚胺不能承受这样的高温,而聚苯并咪唑(PB I)做成的复合材料在650℃下短期使用具有令人满意的性能,其不仅使弹体的承温能力得到明显提高,而且还使弹体的结构质量得到大幅降低,是研制超音速导弹的较为理想的结构材料。介绍了聚苯并咪唑的发展概况,聚合机理以及合成聚苯并咪唑树脂的主要单体和聚合工艺,对聚苯并咪唑的应用及发展动向也作了阐述。
The new high - speed cruise missiles request that materials can withstand the high temperature of about 650℃, polyimide can not afford such a high temperature which is currently used, but polybenzimidazole （PBI） which is used to make composite materials has a satisfactory performance at 650℃ for a short time. Not only the missile body＇s temperature resistance has been markedly enhanced by PBI, but also the mass of the body structure is substantially reduced. PBI is a better structural material to manufacture the supersonic missile. The development of PBI, the polymerization mechanism, the key monomer and main polymerization process for synthesizing PBI are introduced, as well as the application and development trend.
出处
《化学与粘合》
CAS
2008年第6期55-59,共5页
Chemistry and Adhesion
关键词
聚苯并咪唑
聚合机理
单体
发展动向
Polybenzimidazole
polymerization mechanism
monomer
development trend
