Investigation on co-pyrolysis of polyester enamel wire and its pyrolysis product
The pyrolysis products of the polyester enameled wire paint(coke)were separately co-pyrolyzed with the poly-ester enameled wire and the paint of the polyester enameled wire.And the co-pyrolysis behaviors were investigated by X-ray diffraction,morphology analysis,thermogravimetric analysis,Coats-Redfern integral method,infrared analysis and other methods.The results indicated that the obtained coke displayed a high degree of graphitization with folded micro-nano structure on its surface.Although the coke continued pyrolyzed,it increased the weight loss of the polyester enamel paint and reduced 16.9%of pyrolysis activation energy when the coke co-pyrolyzed with the paint.In addition,the coke could lead to more oxygen-containing functional groups such as O—H and C=O and CO2 to escape during the pyrolysis of polyester paint film.This work demonstrated that the co-pyrolysis of coke and polyester enameled wire can further pro-mote the pyrolysis of polyester enameled wire.It can not only contribute to reduce energy consumption,but also further promote the development of copper recovery from waste enameled wires by pyrolysis method.
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