A kind of preparation technology of torsion-resistant flexible cable
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A preparation process and technology for flexible cables, applied in the field of cables, can solve the problems of economic loss, wrinkling and twisting of the cable sheath, hidden safety hazards, etc., and achieve the effect of improving softness and good resistance to twisting.
Active Publication Date: 2017-10-24
HEFEI XINGCHEN ELECTRIC WIRE & CABLE
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Abstract
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Problems solved by technology
[0003] For wind power cables used outdoors, the sheath of the cable is often wrinkled and twisted, causing the equipment connected to the cable to fail to work normally. The same problem reappears shortly after the cable is replaced, which poses a safety hazard and also causes economic losses.
Method used
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Embodiment 1
[0018] A preparation process for a twist-resistant flexible cable, comprising the following steps:
[0019] (1) Twisting multiple tinned copper wires of the same diameter into a conductor core;
[0020] (2) Three layers of polypropylene tape are wrapped around the conductor core;
[0021] (3) Synchronously extrude the insulating layer of EPDM rubber and the insulating layer of silicone rubber on the outside of the polypropylene belt, the insulating layer of EPDM rubber is set on the inner side, and the insulating layer of silicone rubber is set on the outer side;
[0022] The components and parts by weight of the insulating layer of EPDM rubber are: 80 parts of EPDM rubber, 20 parts of superfine talcum powder, 20 parts of calcium carbonate, 2 parts of vinyltrisilane, 5.5 parts of microcrystalline paraffin, oxidized 0.2 parts of zinc, 1 part of benzophenone, 0.1 parts of pentaerythritol triallyl ether, 46 parts of aluminum hydroxide, 0.2 parts of anti-aging agent RD;
[0023]...
Embodiment 2
[0026] Embodiment 2 steps are identical with embodiment 1, difference is:
[0027] The components and parts by weight of the insulating layer of EPDM rubber are: 90 parts of EPDM rubber, 26 parts of superfine talcum powder, 16 parts of calcium carbonate, 4 parts of vinyltrisilane, 4 parts of microcrystalline paraffin, oxidized 0.6 parts of zinc, 1.5 parts of benzophenone, 0.3 parts of pentaerythritol triallyl ether, 56 parts of aluminum hydroxide, 1 part of anti-aging agent RD;
[0028] The components and parts by weight of the silicone rubber insulating layer are: 84 parts of methyl vinyl silicone rubber, 4 parts of binary ethylene propylene rubber, 25 parts of white carbon black, 3 parts of hydroxyl silicone oil, tetrakis [β-(3,5- 0.5 parts of tertiary butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.3 parts of 2-hydroxy-4-n-octyloxybenzophenone, 5 parts of zinc borate, and 12 parts of antimony trioxide.
Embodiment 3
[0030] The steps of Example 3 are the same as those of Example 1, except that the antioxidant is bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide.
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Abstract
The invention discloses a preparation process of a warp-resistant flexible cable. The preparation process comprises the following steps of intertwisting a plurality of tin-coated copper wires with same diameter for forming a conductor wire core; winding three layers of polypropylene tapes outside the conductor wire core; synchronously extracting a terpolymer EP rubber insulating layer and a silicone rubber insulating layer outside the polypropylene tapes, wherein the terpolymer EP rubber insulating layer is arranged inside, and the silicone rubber insulating layer is arranged outside; and extruding a chlorinated polyethylene sheath outside the silicone rubber insulating layer. According to the preparation process of the warp-resistant flexible cable, the tin-coated copper wires are used as the conductor wire core; the three layers of polypropylene tapes are wound outside the conductor wire core; simultaneously the terpolymer EP rubber insulating layer and the silicone rubber insulating layer are extruded; finally the chlorinated polyethylene sheath is extruded; and double insulating layers are arranged. The flexible cable prepared according to the preparation process has high warp resistance and can withstand a low temperature of minus 45 DEG C. Furthermore the flexible cable is suitable for outdoor operation.
Description
technical field [0001] The invention belongs to the field of cables, and in particular relates to a preparation process of twist-resistant flexible cables. Background technique [0002] The cable is usually a rope-like cable twisted by several or groups of wires [at least two in each group]. Each group of wires is insulated from each other and is often twisted around a center. Insulating covering. Cables can be divided into power cables, communication cables and control cables according to their uses. Compared with overhead lines, cables have the advantages of small insulation distance between lines, small footprint, underground laying without occupying space above the ground, not affected by surrounding environmental pollution, high reliability of power transmission, and no interference to personal safety and the surrounding environment. Small. But the cost is high, the construction and maintenance are more troublesome, and the manufacture is also more complicated. Ther...
Claims
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Application Information
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