Ethylene propylene rubber insulating fire-resistant medium-voltage power cable for marine engineering and method for producing same
An ethylene-propylene rubber insulation and power cable technology, which is applied in cable/conductor manufacturing, power cables with shielding/conducting layers, circuits, etc., can solve problems such as unsuitable marine engineering and ships, hard materials, and small ship space. , to achieve the effect of superior mechanical properties, improved fire resistance and good insulation properties
Inactive Publication Date: 2013-04-03
JIANGSU YUANYANG DONGZE CABLE
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Problems solved by technology
With the improvement of electrical safety requirements, ordinary flame-retardant cables can no longer meet the requirements of use, and there is an urgent need for matching fire-resistant medium-voltage cables in places with high fire-proof conditions.
At present, either ordinary flame-retardant cables or land-use medium-voltage cables are used to replace them in the market, but both of them are not suitable for marine engineering and ships.
At the same time, due to the relatively narrow space of the ship, the general medium-voltage power cable is insulated with cross-linked polyethylene, and its material is relatively hard, which cannot meet the requirements of the ship for cable flexibility.
Method used
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preparation Embodiment 1
[0020] Among them, the preparation example 1 of the insulating rubber used in the ethylene-propylene rubber insulating layer 4, the steps are as follows: (1) Prepare the raw materials according to the following components and weight content: ethylene-propylene rubber 2470: 16 parts; ethylene-propylene rubber 4044: 7 parts; paraffin wax Oil: 1.0 parts; microcrystalline paraffin: 1.0 parts; white carbon black: 1 part; superfine talc powder: 15 parts; modified calcined clay: 12 parts; vinyltrimethoxysilane (coupling agent A-171): 0.2 parts; 2-mercaptobenzimidazole (antiaging agent MB): 0.4 parts; 2,2,4-trimethyl-1,2-dihydroquinoline polymer (antiaging agent RD): 0.4 parts; Dicumyl oxide (curing agent DCP): 0.8 parts. (2) First mix ethylene propylene rubber 2470 and ethylene propylene rubber 4044 evenly, then add paraffin oil, microcrystalline paraffin, white carbon black, ultrafine talcum powder, and modified calcined clay in an internal mixer for 3 minutes; Then add vinyltrimet...
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Abstract
The invention relates to an ethylene propylene rubber insulating fire-resistant medium-voltage power cable for marine engineering and a method for producing the same. The method for producing the ethylene propylene rubber insulating fire-resistant medium-voltage cable comprises the following steps: extruding and wrapping a semi-conductive conductor shielding layer at the periphery of a stranded annealed copper conductor; winding and wrapping a fire-resistant mica tape; co-extruding and wrapping an ethylene propylene rubber insulating layer and an semi-conductive conductor shielding layer frominside to outside; cladding a metal shielding layer to form shielding insulating core wires; stranding a plurality of shielding insulating core wires into a cable core; extruding and wrapping an inner protecting layer; cladding a copper wire woven armored layer; and finally extruding and wrapping an outer protecting layer. The raw materials of the insulating layer comprise the following components: 16 parts of ethylene propylene rubber 2470, 7-8 parts of ethylene propylene rubber 4044, 1.0-1.5 parts of paraffin oil, 1.0-1.5 parts of microcrystalline paraffin, 1-2 parts of white charcoal, 15-20 parts of super fine talc powder, 12-16 parts of modified calcined clay, 0.2-0.4 part of coupling agent A-171, 0.4-0.6 part of antioxidant which is MB, 0.4-0.6 part of antioxidant which is RD and 0.8-1.4 parts of curing agent which is DCP. The insulating layer of the cable is soft, has good insulating properties, excellent mechanical properties and can resist aging.
Description
technical field [0001] The invention relates to a power cable, in particular to an ethylene-propylene rubber insulated fire-resistant medium-voltage power cable for marine engineering. The invention also relates to a method for manufacturing an ethylene-propylene rubber insulated fire-resistant medium-voltage power cable for marine engineering. Background technique [0002] Along with the application of high-power medium-voltage electrical equipment in ships and marine engineering, marine medium-voltage power cables are increasingly used. With the improvement of electrical safety requirements, ordinary flame-retardant cables can no longer meet the requirements of use, and there is an urgent need for matching fire-resistant medium-voltage cables in places with high fire-proof conditions. At present, either ordinary flame-retardant cables or land-use medium-voltage cables are used to replace them in the market, but both of them are not suitable for marine engineering and ship...
Claims
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IPC IPC(8): H01B9/02H01B13/00
Inventor 李永江陆云春
Owner JIANGSU YUANYANG DONGZE CABLE