Semi-conductive internal shielding material composition, semi-conductive internal shielding material and manufacturing method thereof, as well as medium and low-pressure and 110KV cable

A low-voltage cable, inner shielding technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve the problem of not being able to use 110kV rated cables, and achieve the effect of high cleanliness

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A low-voltage cable, inner shielding technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve the problem of not being able to use 110kV rated cables, and achieve the effect of high cleanliness

CN103665529AActive Publication Date: 2014-03-26CHINA PETROLEUM & CHEM CORP +1

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preparation example Construction

[0043] According to the preparation method of the semi-conductive inner shielding material for 110 kV cables of the present invention, the present invention utilizes the self-weight , the conditions for mixing and contacting with the crosslinking agent in a high-speed mixer are not particularly limited. Preferably, the conditions for mixing and contacting in step (2) include: contact temperature is 60-80°C, preferably 65-70°C; contact time Specifically, the mixed contact can be first mixed with the semi-conductive inner shielding cable material premix granules for 110 kV cables and the cross-linking agent for 5-8 minutes, and then left to stand after mixing to allow the cross-linking agent to soak into the 110 kV cables. Semi-conductive inner shielding material 2-3h, preferably 2.5-3h.

[0044] According to the method for preparing a semi-conductive inner shielding material for 110 kV cables of the present invention, preferably, the method further includes vacuum packaging the...

Embodiment 5

[0053] The extrusion process parameters of Example 5 are the same as those of Example 1 above, but all operations are carried out in ordinary workshops without providing dust-free and positive pressure preparation conditions.

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Abstract

The invention relates to a semi-conductive internal shielding material composition. The composition contains an ethylene-butyl acrylate copolymer, an ethylene-vinyl acetate copolymer, an antioxidant, a cross-linking agent, a dispersant, lubricating oil, an anti-copper agent and acetylene carbon black, wherein relative to 100 parts by weight of ethylene-acrylate, the content of the ethylene-vinyl acetate copolymer is 50-65 parts by weight, the content of the acetylene carbon black is 50-72 parts by weight, the content of the antioxidant is 0.1-1.5 parts by weight, the content of the cross-linking agent is 0.5-2.5 parts by weight, the content of the dispersant is 1-10 parts by weight, the content of the lubricating oil is 1-12 parts by weight, and the content of the anti-copper agent is 0.05-1.2 parts by weight. The invention further relates to a semi-conductive internal shielding material for a medium and low-pressure and 110KV cable and a manufacturing method thereof, as well as the medium and low-pressure and 110KV cable. When the semi-conductive internal shielding material provided by the invention is used for extruding the cable, and the phenomenon of scorching can be avoided.

Description

technical field [0001] The invention relates to a semiconductive inner shielding material composition, a semiconductive inner shielding material for medium and low voltage cables, a method for making the same, and medium and low voltage cables; a semiconductive inner shielding material for 110 kV cables, a method for preparing the same, and a 110 kV cable. Background technique [0002] Wire and cable are indispensable basic materials for transmitting electric energy, transmitting information and manufacturing various electrical instruments, and are widely used in electric power, construction, petrochemical, transportation and other fields. A cable with reliable quality should not only contain excellent insulating materials, but also contain shielding materials that can make the electric field evenly distributed and improve the electrical strength and service life of the cable. Copolymers of ethylene and strong polar monomers such as ethylene-vinyl acetate copolymer (EVA), et...

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Application Information

Patent Timeline

26 Mar 2014

Publication

CN103665529A

IPC: C08L23/08; C08L33/08; C08L31/04; C08K13/02; C08K3/04; C08K5/25; C08K5/14; C08K5/20; C08J3/24; B29C47/92; H01B9/02; B29C48/92

CPC: B29C48/92; C08L23/0869; C08J3/246; C08J2323/08; C08J2423/08; C08K2201/001; C08L2203/202; H01B9/02

Inventors: 赵和英; 于涛