| 摘要 |
<p>The coating consists of a layer of mica, a glass fabric and a layer of PTFE. The layer of mica is obtd. by winding a band of glass fibre fabric inmpregnated with a agglutinant holding mica particles, in one or several layers. The PTFE layer is formed by winding in one or more layers, or by extrusion over the mica layer. The glass fabric layer is obtd. by winding a tape or weaving fibres directly around the previous layer. It retains its dielectric and thermal properties between -200 and 1000 deg.C, and changes into a gel at high temps., which maintains insulation and ensures insulation and sealing when cooled down.</p> |
