摘要
Ethylene-methacrylate-glycidyl(EMG)copolymer is employed to strengthen polyethylene terephthalate(PET)/glass fiber(GF)blends.This paper starts from investigating the effects of various EMG contents on mechanical properties,thermal properties and fractured surface morphology of PET/GF blends.All of the above-mentioned properties own extreme limits of EMG concentration.The crystallization ability of the blends increases with an increment in EMG content,whereas the crystallinity keeps stable at a relatively high level of 0-20 wt.%EMG loading.The tension,bending and impact properties of PET blends are enhanced with the addition of a self-made three-dimensional hierarchical porous carbon sponge(3DC)based on an optimal additive amount.Results indicate that EMG possesses the capabilities of increasing the toughness of PET/GF blends remarkably and transforming the blends from brittle fracture to tough fracture.According to the results,the blends exhibit the best overall properties as the content of EMG reaches 10-15 wt.%.
基金
supported by the Special Support Plan for High-Level Talents of Guangdong Province(No.2017TQ04N840)
Science and Technology Planning Project of Guangdong Province(No.2017A030313081).
