Abstract :
The introduction and development of biaxially-oriented poly(ethylene naphthalate) film (PEN film) in Japan has been compared with the biaxially-oriented poly(ethylene terephthalate) film (the PET film), which is usually mass-produced for electrical and audio-visual uses. Its physical, mechanical, electrical, thermal, chemical, optical and surface properties and radiation resistance were reviewed and its superiority over the PET film, such as a higher Young´s modulus, a higher Tc, higher long-term heat-resistance, a smaller thermal shrinkage coefficient, smaller oligomer extraction, better hydrolysis resistance, better radiation resistance and a lower surface friction coefficient were illustrated. Taking advantage of these excellent properties, its practical applications to electrical and electronic, audio-visual and miscellaneous uses in Japan were exemplified and a new direction for its future development and application has been suggested.
Keywords :
Young´s modulus; dielectric properties; dielectric thin films; electric breakdown; insulating thin films; optical properties; organic insulating materials; polymer films; radiation effects; tensile strength; thermal resistance; Japan; PEN film; Young´s modulus; audio-visual applications; biaxially-oriented film; chemical properties; electrical applications; electrical properties; electronic applications; hydrolysis resistance; long-term heat-resistance; mechanical properties; oligomer extraction; optical properties; physical properties; poly(ethylene naphthalate) films; radiation resistance; surface friction coefficient; surface properties; thermal properties; thermal shrinkage coefficient; Anti-freeze; Capacitors; Electric motors; Electric resistance; Magnetic films; Polymer films; Positron emission tomography; Production; Resistance heating; Thermal resistance;
