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Structure:Polyimide film is synthesized by polymerizing 4-formic acid-2-anhydride of benzene(PMDA ) and 4.4-diamino-diphenyl-ether oxide (ODA) in strong polar solvents throughthe process of forming film and imine treatment at high temperature.Appearance:Transparent or semi-transparent golden film with smooth and flat surface and withoutany needle cavities, bubbles or electrically conductive impurities.Properties:1) Excellent performance of insulation and mechanism2) Excellent heat-resistance: as low as -269°C and as high as +260°C3) Excellent chemical stability.4) Excellent flame retardant property5) Excellent resistance to radiation6) Good radio-resistance, irradiated with R ray of 10-9, its properties unchanged.7) Complex with many materials, moisture protection and corrosion resistance aregreatly improvedSpecifications:1) Thickness: 0.2mm2) Width: 520, 660mm (can be slit as required)3) Length: 1,500, 2,000m (without joint)4) Full series of grades available
