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一、引 言 纤维增强塑料的动态力学性能主要依赖于:(1)纤维的强度及模量;(2)树脂的强度及化学稳定性;(3)树脂与纤维间的粘结能力。 在复合材料中,作为基体材料的环氧树脂,由于吸水和环境温度的上升,其力学性能是下降的。当使用的纤维和树脂一定时,如何通过改善树脂与纤维间的粘结来提高复合材料的力学性能,已成为人们当前亟待解决的问题。 六十年代初期,国外许多学者为提高界面的粘结,开始了大量的界面研究工作,并相继提出了化学键理论、表面浸润理论、变形层理论、拘束层理论等等。不论何种
I. INTRODUCTION The dynamic mechanical properties of fiber-reinforced plastics depend mainly on: (1) the strength and modulus of the fiber; (2) the strength and chemical stability of the resin; and (3) the bonding ability between the resin and the fiber. In composite materials, the epoxy resin as a base material has a reduced mechanical property due to water absorption and environmental temperature increase. How to improve the mechanical properties of composites by improving the bonding between resin and fiber has become an urgent problem to be solved when using certain fibers and resins. In the early 1960s, many foreign scholars started a large number of interfacial research work to improve the bonding of the interface, and successively put forward the chemical bond theory, surface infiltration theory, deformation layer theory, restraint layer theory and so on. No matter what