Processing technique of fire retardant semi-conductive cloth tape

Abstract

The invention relates to a process for manufacturing a fire retardation semiconducting cotton tape used in making a power cable conductor and core shielding. The process adopts pure cotton cloth with the thickness ranging between 0.1 and 0.25 mm as raw material, and comprises the following steps that: firstly, a high temperature coating machine is used to coat conducting liquid on the cotton cloth; then, the cotton cloth enters into a high temperature drying zone of the high temperature coating machine from bottom to top in a vertical direction with the drying zone of 14 to 18 meters high andthe drying temperature of between 140 and 150 DEG C, and then is dried and leveled off; subsequently, the cotton cloth is wound up; then, the wound up material passes through a dipping trough filled with nitrogen-phosphor inflaming retarding liquid, and then is dried once again through a high temperature drying box under 80 to 150 DEG C; subsequently, the wound up material is wound up; finally, the material is cut by a dividing and cutting machine to make a cotton tape. The process adopts fire retardant and conducting liquid at the same time during production; therefore, the manufactured cotton tape has excellent flame retardant property and conductive property, and is suitable to be used in inflammable environments such as a high voltage cable.

Description

technical field [0001] The invention relates to a processing technology for manufacturing a flame-retardant semi-conductive cloth tape for electric cable conductors and wire core shielding. Background technique [0002] At present, the semi-conductive cloth tapes used for power cable conductor and core shielding in my country, especially the semi-conductive cloth tapes widely used in high-voltage mine cables and high-voltage marine cables, have good shielding effect and good mechanical strength, but their No flame retardant performance, because the solid colloid contained in it is easy to burn in case of fire, which will cause major safety hazards, so it is not suitable for cables that require flame retardant, such as coal mines and ships. Contents of the invention [0003] The purpose of the present invention is to provide a process for manufacturing a semi-conductive cloth tape with good semi-conductive performance and good flame-retardant performance. [0004] The techn...

AI Technical Summary

Problems solved by technology

[0002] At present, the semi-conductive cloth tapes used for power cable conductor and core shielding in my country, especially the semi-conductive cloth tapes widely used in high-voltage mine cables and high-voltage marine cables, have good shielding effect and good mechanical strength, but their No flame retardant performance, because the solid colloid contained in it is easy to burn in case of fire, which will cause major safety hazards, so it is not suitable for cables that require flame retardant, such as coal mines and ships.