Effect of nanoparticle and glass fiber on the hydrothermal aging of polyamide 6
Chunbo Zhang, Chang Liu, Hui Zhao, Wenxian Hu, Guoming Liu, Ying Zhao, Xia Dong, Ke‐Zhi Wang, Jianjun Zhang, Xiangyang Li, Dujin Wang
Abstract
Abstract Hydrothermal aging behavior of polyamide 6 (PA6) and its composites (PA6/calcium carbonate [CaCO 3 ] and PA6/short glass fiber [SGF]) was systematically investigated using infrared spectroscopy, dynamic mechanical analysis, differential scanning calorimetry, and wide‐angle X‐ray diffraction as well as mechanical measurements. It was found that the water absorption mechanism is strongly affected by the presence of fillers. SGF‐reinforced PA6 composites absorb less water than PA6 and PA6/CaCO 3 composites under the same hydrothermal condition. PA6 with 10 wt% SGF exhibits great resistance to hydrothermal aging, which is attributed to the higher crystallinity and larger α‐form fraction.