Semi-conductive shielding material for cross-linked polyethylene cables
A cross-linked polyethylene, semi-conductive technology, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve problems such as inability to adapt to long-distance high-voltage transmission, many residues on the insulating surface, and easy brittleness of the cable sheath , to achieve the effect of eliminating scorch, widening the adaptable temperature range, and improving electrical performance
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[0009] A semi-conductive shielding material for cross-linked polyethylene cables. The components calculated by mass are: 45%-60% EVA material, 30%-40% carbon black, 6%-10% plasticizer, 1% ~2.5 silane cross-linked POE, 0.1%~1% antioxidant, 0.5%~2% hydroxybenzene sulfonic acid, 12%-20% tetrastyrene; the formula components are charged in order for banburying, and then It is extruded and granulated by an extruder, and then made by adding crosslinking agent. The EVA material is a copolymer with an adjustable ratio of ethylene and vinyl acetate. The plasticizer includes one or more of oil, paraffin wax, stearic acid, zinc stearate, and polyethylene wax.
[0010] This method can significantly improve the electrical performance of the external shielding material used for the insulation of cross-linked polyethylene insulated cables of 35KV and below, eliminate the scorch phenomenon during the use of the product, and improve the insulation surface residue; POE modified EVA base material,...
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