Preparation and properties of waste epoxy resin/polyamide composite materials
To address the difficulty in waste epoxy resin(EP)recycling,EP was used as a filling material for the modifica-tion of polyamide 66(PA66).PA66 grafted with maleic anhydride(PA66-g-MAH)was prepared as a compatibilizer through melt grafting for enhancing the compatibility between PA66 and EP.Then,PA66/EP/PA66-g-MAH com-pounds were prepared through melt extrusion and characterized by using universal mechanical testing machine,thermo-gravimetric analyzer,and scanning electron microscope.The effects of different compatibilizer content on their mechani-cal properties,thermal properties and microscopic morphology were investigated.The addition of PA66-g-MAH en-hanced the compatibility of the compounds,resulting in an increase in the tensile strength and elastic modulus.The PA66/20 wt％EP/3 wt％PA66-g-MAH compound exhibited the optimal comprehensive mechanical performance with tensile strength of 69.2 MPa and an elastic modulus of 678.3 MPa.Moreover,the addition of PA66-g-MAH also in-creased the initial decomposition temperature and the temperature corresponding to the maximum decomposition rate.
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