长玻璃纤维增强PA66复合材料的综合性能及其影响因素研究

利用定制的熔融浸渍装置制备了长玻璃纤维增强聚酰胺66(PA66/LGF)复合材料,并对其力学性能、界面黏结性等进行了表征,探讨了玻璃纤维含量、润滑剂含量、相容剂含量以及切粒长度等因素对复合材料性能的影响,得到了PA66/LGF复合材料优化的配方设计与切粒长度.结果表明,当玻璃纤维含量为43％(质量分数,下同)、切粒长度...

Study on comprehensive properties and influencing factors of long glass fiber reinforced PA66 composites

Long glass fiber reinforced polyamide 66 （PA66/LGF） composites are widely used in automobile and other industries due to their excellent comprehensive performance. In this paper， the PA66/LGF composites were prepared by a custom?made melt impregnation equipment， and the mechanical properties， interfacial adhesion and other properties of PA66/LGF composites were characterized. The effects of a series of influence， such as the glass fiber content， lubricant content， compatibilizer content， and pellet length， on the comprehensive properties of composites were investigated. Finally， we summarized the optimal formula design and pellet length for the preparation of PA66/LGF composites. The tensile strength， the elongation at break， the flexural strength， the notched impact strength and the non?notched impact strength of the PA66/LGF composites with a glass fiber content of 43 % and a pellet length of 12 mm prepared in this study were 230 MPa， 7.1 %，369 MPa，62 kJ/m²，90 kJ/m²，respectively.