沥青基碳纤维及其混杂纤维增强尼龙1010复合材料结构与性能的研究

STUDIES ON THE STRUCTURE AND PROPERTIES OF THE PITCH-BASED CARBON FIBER AND ITS HYBRID FIBER REINFORCED NYLON-1010 COMPOSITES

本工作研究了通用型沥青基碳纤维、玻璃纤维及它们的混杂纤维增强尼龙 1010复合材料的结构与性能,并与相应的聚丙烯腈基碳纤维及其混杂纤维复合材料的性能作了系统的比较。实验结果表明,随短纤维含量的增加,复合材料的模量和强度线性增加,当纤维含量达到一定临界值时,其强度有所下降。聚丙烯腈基碳纤维增强尼龙1010复合材料比相应的沥青基碳纤维复合材料具有较好的力学性能,但后者通过与高强度玻璃纤维混杂增强,可提高其力学性能。本工作还研究了这些复合材料的断裂特征和它们的混杂效应。

The thermoplastic nylon-1010 is reinforced with short general purpo- se (GP) pitch-based carbon fibers, KH-550 treated high-strength glass fibers and their hybrid fibers. Results show that both stiffness and strength may be increased and the extent of this improvement is dependent on the nature of the fibers used and the fiber volume fraction. The mechanical properties of the hybrid carbon/glass fibre reinforced nylon-1010 composite are better than those of the pure pitch-based carbon fiber composite. The fracture feature of these composites and the 'hybrid effect' have also been studied.