| 摘要 |
The coating is comprised, according to an embodiment, of a first inner layer (2) of glass fibres including mica particles surrounding the lead, the pipe or the conduit (1) of a second layer (3) of the same nature as the preceeding layer but crossed therewith, of a third layer (4) consisting of a polymer charged with inorganic compounds of the refractory type, of a fourth layer (5) consisting of a braid of glass fibres coated with resin, and a fifth layer (6) of thermostable polymer charged with refractory inorganic material. When the coating is subjected to a temperature higher than 950<o>C, the organic parts are decomposed and the inorganic parts are melted to give a foam which vitrifies and enables to maintain the sealing and the electric insulation.
|
