Polyimide Fiberglass Cloth Sheet

D333 Polyimide Glass Cloth Laminated Sheet consists of woven glass cloth impregnated and bonded with a polyimide thermosetting resin, laminated under high temperature and pressure. The woven glass cloth shall be alkali-free and treated by KH560.

D333 possesses high heat resistance, excellent physical properties and mechanical strength, and radiation-proof property. It is intended for C-class (200ºC) electrical motors or electrical equipments as insulating structural components or parts. It is applicable for the electrical motors or equipments requiring higher mechanical property under thermal state.  

1 Performance Requirements for Sheets

 1.1 Appearance

    The surface of sheet shall be flat and smooth, free of air bubbles, wrinkles or cracks and reasonably free of other small imperfections such as scratches, dents etc. The edges of sheet shall be tidy and be free of delaminations and cracks. The color shall be substantially uniform, but a few stains are permissible.

 1.2 Dimension and allowed deviation

   1.2.1 Length and Width of Sheets (see Table 1)