纤维是一种高强度、高模量材料,理论上大多数有机纤维都可被制成碳纤维,实际用作碳纤维原料的有机纤维主要有三种:粘胶纤维、沥青纤维、聚丙烯腈纤维。当前固体火箭发动机结构件用的碳纤维大多由聚丙烯腈纤维制成。碳纤维起初用于耐烧蚀喉衬、扩张段材料,后来逐渐在其它结构件上应用。尤其是实现汽车的轻量化更多的靠复合材料实现,在这其中,近些年比较新潮的当属轻质、高强等优异的综合性能的碳纤维复合材料,尽管碳纤维的价格 Fiber is a kind of high strength and high modulus material. In theory, most organic fibers can be made into carbon fibers. There are mainly three kinds of organic fibers that are actually used as carbon fiber raw materials: viscose fiber, pitch fiber and polyacrylonitrile fiber. Most of the carbon fibers currently used in the structure of solid rocket engines are made of polyacrylonitrile fibers. Carbon fiber was initially used in the erosion-resistant throat, expansion of the material, and later gradually applied to other structures. In particular, the realization of lightweight car more rely on the realization of composite materials, of which one of the more trendy in recent years should be lightweight, high strength and other excellent performance of carbon fiber composite materials, although the price of carbon fiber