Water-tree-retardant crosslinked polyethylene cable material and cable prepared from same
A cross-linked polyethylene, anti-water tree technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of shortening the service life of cables, corrosion of steel strips, copper strips, and degradation of insulation performance, so as not to produce water trees, The effect of stable water blocking performance and high qualified rate of finished products
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Embodiment 1
[0050] Implementation example 1 is an embodiment of the water-tree-resistant crosslinked polyethylene cable material of the present invention, and implementation examples 2-6 are implementation examples of using water-tree-resistant cables.
[0051] Implementation example 1
[0052] A water-tree-resistant XLPE cable material is characterized in that it is composed of the following raw materials in parts by weight:
[0053] Linear low-density polyethylene: 60-80 parts;
[0054] Styrene: 6-10 parts;
[0055] Polyurethane thermoplastic elastomer: 3 to 8 parts;
[0056] Polyethylene glycol: 3 to 6 parts;
[0057] Ethylene-ethyl acetate copolymer: 5-8 parts;
[0058] Polyethylene wax or paraffin: 3 to 5 parts;
[0059] Commercially available model 4030 nucleating agent for cable plastics: 0.2 to 0.8 parts;
[0060] Di-tert-butyl peroxide: 0.5 to 1 part;
[0061] Benzoyl peroxide: 0.2 to 1 part;
[0062] Antioxidant of type 300 for commercially available plastics or an...
Embodiment 2
[0102] please see figure 1 , a water tree resistant cross-linked polyethylene cable 10, comprising a conductor 1, an insulating layer 2 coated on the conductor 1 by extrusion and extrusion, and a cross-linked polyethylene sheath layer 5 outside the insulating layer. It is characterized in that there is a composite water-blocking layer 3 outside the insulating layer, an armor layer 4 is outside the composite water-blocking layer, and the cross-linked polyethylene sheath layer is extruded and coated on the outside of the armor layer; the composite water-blocking layer is composed of a first water-blocking film layer 32 and baseband layer 31, the baseband layer is close to the insulating layer; the first water-blocking film layer is bonded on the baseband layer; the material of the cross-linked polyethylene sheath layer is the anti-water tree in the prior art XLPE cable material or the anti-water tree XLPE cable material described in Example 1.
Embodiment 3
[0104] please see figure 2 , a water tree resistant cross-linked polyethylene cable 10, comprising a conductor 1, an insulating layer 2 coated on the conductor 1 by extrusion and extrusion, and a cross-linked polyethylene sheath layer 5 outside the insulating layer. It is characterized in that there is a composite water-blocking layer 3 outside the insulating layer, an armor layer 4 is outside the composite water-blocking layer, and the cross-linked polyethylene sheath layer is extruded and coated on the outside of the armor layer; the composite water-blocking layer is composed of a first water-blocking film Layer 32, baseband layer 31, and second water-blocking film layer 30, the second water-blocking film layer is close to the insulating layer; the first water-blocking film layer and the first water-blocking film layer are respectively bonded to the two sides of the baseband layer The material of the cross-linked polyethylene sheath layer is the water-tree-resistant cross-l...
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