摘要
纤维和树脂之间的界面结合强度是决定复合材料性能的关键因素。通过实验研究在玻璃纤维表面涂覆经硅烷偶联剂KH550表面处理的纳米SiO_2以及在PP基体中加入PP-g-MAH对玻璃纤维增强聚丙烯复合材料的界面结合强度和力学性能的影响。结果表明,纳米SiO_2经KH550表面处理后可以降低其表面能,有利于其在纤维表面分散吸附;纤维表面涂覆纳米SiO_2及在PP中加入PP-g-MAH,有利于增强纤维和树脂之间的界面结合强度,复合材料的层间剪切强度提升了116.06%,拉伸强度提升了109.14%,弯曲强度提升了99.85%。
The interfacial bonding strength between fiber and resin is the key factor that determines the performance of composite materials. In this paper,we will study the influence of glass fiber surface coated with nano-SiO2 that was treated by silane coupling agent KH550 and PP-g-MAH addition in PP on the interfacial bonding strength and mechanical properties of glass fiber reinforced polypropylene composites. The results show that KH550 surface treatment can reduce the surface energy of nano-SiO2,which makes the nano-SiO2 be advantageous to disperse on fiber surface. Fiber surface coated with nano-SiO2 and addition of PP-g-MAH in PP is helpful to enhance the interfacial bonding strength between the fiber and resin. Meanwhile,shear strength of composite increased by 116.06%,tensile strength increased by 109. 14%,and bending strength increased by 99. 85%.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2016年第9期49-54,共6页
Fiber Reinforced Plastics/Composites
