Phthalonitrile terminated with polyarylene ether nitrile(PEN-Ph)is widely used in the aero-space and electronics fields due to its high temperature resistance and high chemical stability,etc.After applying post-solid phase chemical reaction technology,Phthalonitrice on the end group of PEN-Ph and the side cyanide group of the molecular chain can interact with each other to from a stable structure,which is transformed from linear to three-dimension network.Thus,the temperature-resistant level and mechani-cal performance are greatly enhanced.Specifically,there are two factors affecting PEN-Ph cross-linking re-action:internal factors mainly include main chain chemical structure,molecular weight and molecular weight distribution,the end-capping groups content;external factors mainly include the heat treatment process,cross-linking agent,and catalyst.Based on this,focusing on how external factors affect the cross-linking behavior and properties of PEN-Ph.In addition,PEN-Ph single-component composites with high temperature resistance,high strength and high modulus have been successfully prepared,which is expec-ted to be used in the fields of capacitor films and flexible copper clad laminates.
维普
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