2021年2月25日星期四

Polyimide / Zirconium Tungstate Composite Film

Polyimide (PI) is one of the best comprehensive performance of organic polymer materials, with excellent mechanical, dielectric and other properties, is widely used in many fields.\

Zirconium tungstate (ZrW2O8) is a kind of expansive material with isotropic negative thermal excellence, modern industry it with the prepared polyimide composite, PI/ZrW2O8 composite film, this film has very important applications in industry.


PI/ZrW2O8 composite films with ZrW2O8 content of 0%, 3%, 6%, 10%, 25%, and 50% ZrW2O8 were successfully prepared by in situ polymerization, through the contrast test found that after joining ZrW2O8, the high temperature strength of PI/ZrW2O8 composite films had a very big impact, no change in quality and thermal effect in the wood between 200 and 450 °C. It was further verified that the polyamic acid was fully imidized at 350 °C, indicating that the material had high heat resistance and high decomposition temperature. The thermal decomposition temperature of the film filled with ZrW2O8 powder increases with the increase of ZrW2O8 powder content.

Polyimide / zirconium tungstate composite films can be used for wrapping material slot insulation of motor and cable, transparent polyimide film can be used as a solar cell plate soft, can be used in the manufacture of gas separation membrane, used for a variety of separation, such as hydrogen / nitrogen and nitrogen / oxygen / nitrogen or carbon dioxide, methane, etc., it can also be used as pervaporation membrane and ultrafiltration membrane from air hydrocarbon raw material gas and alcohol. Polyimide / zirconium tungstate composite film is of great importance in separation of organic gas and liquid because of its excellent heat resistance and resistance to change.

Polyimide / zirconium tungstate composite film picture polyimide / zirconium tungstate composite film is a kind of polymer negative thermal expansion material which is widely used. It is widely used in aerospace, aviation,

microelectronics and other high-end industries.

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