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Corona-resistant cable and preparation method thereof

A corona and cable resistance technology, applied in power cables, cable/conductor manufacturing, insulated cables, etc., can solve the problems of low corona resistance, easy aging and cracking, poor corona resistance, etc. Effects of corona, good insulation, good corona resistance

Inactive Publication Date: 2020-12-18
广西昌用电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a corona-resistant cable and its preparation method in view of the problems that the cable has low corona resistance performance, poor corona resistance effect and easy aging and cracking.

Method used

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  • Corona-resistant cable and preparation method thereof
  • Corona-resistant cable and preparation method thereof
  • Corona-resistant cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for a corona-resistant cable, comprising the following steps:

[0037] a. Preparation of corona-resistant coating: by weight, take 55 parts of acrylic resin, 500 parts of ethanol, 0.2 parts of N,N'-diisopropylcarbodiimide and 33 parts of dragon's blood extract into the reaction kettle , heat up to 95°C, heat preservation reaction for 70 minutes, then add 0.11 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium and 16 parts of porphyrin compound, heat up to 130°C, heat heat reaction for 30 minutes, and then After cooling to room temperature, add 0.15 parts of cetyltrimethylammonium bromide and stir evenly to obtain a corona-resistant coating;

[0038] Wherein, the porphyrin compound is porphine or tetraphenylporphyrin.

[0039] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 4 parts of dragon's blood, add water to immerse, boil for 40 minutes, then filter, collect the filter resi...

Embodiment 2

[0049] A preparation method for a corona-resistant cable, comprising the following steps:

[0050] a. Preparation of corona-resistant coating: by weight, take 65 parts of acrylic resin, 550 parts of ethanol, 0.5 parts of N,N'-diisopropylcarbodiimide and 43 parts of dragon's blood extract into the reaction kettle , heat up to 125°C, heat preservation reaction for 90 minutes, then add 0.18 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium and 25 parts of porphyrin compound, heat up to 140°C, heat heat reaction for 60 minutes, then After cooling to room temperature, add 0.25 parts of cetyltrimethylammonium bromide and stir evenly to obtain a corona-resistant coating;

[0051] Among them, the porphyrin compound is 5,15-ethynylphenyl-10,20-phenylporphyrin.

[0052] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 12 parts of dragon's blood, add water to immerse, boil for 60 minutes, then filter, collect the fi...

Embodiment 3

[0062] A preparation method for a corona-resistant cable, comprising the following steps:

[0063] a. Preparation of corona-resistant coating: by weight, take 57 parts of acrylic resin, 510 parts of ethanol, 0.3 parts of N,N'-diisopropylcarbodiimide and 35.5 parts of dragon's blood extract into the reaction kettle , heat up to 100°C, heat preservation reaction for 75 minutes, then add 0.12 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium and 18 parts of porphyrin compound, heat up to 132°C, heat heat reaction for 37 minutes, then After cooling to room temperature, add 0.18 parts of cetyltrimethylammonium bromide and stir evenly to obtain a corona-resistant coating;

[0064] Among them, the porphyrin compound is 5,10,15,20-tetrakis(4-ethynylphenyl)porphyrin.

[0065] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 6 parts of dragon's blood, add water to immerse, boil for 45 minutes, then filter, collect ...

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Abstract

The invention provides a corona-resistant cable and a preparation method thereof, and particularly relates to the technical field of cable materials. Corona-resistant paint obtained by polymerizing acrylic resin, dragon's blood extract and porphyrin compounds is dip-coated on the surface of a wire, and then dry ice powder is sprayed to reinforce the paint dip-coated on the wire. And then the wireis coated with a composite rubber material prepared from enzymolysis carbonate, guayule rubber, carbon aerogel mixing, peanut shell fiber extraction and zirconium oxide, and then coated with an outerprotective layer, so as to prepare the corona-resistant cable. The cable has good corona resistance, oxidation resistance, acid resistance and mechanical strength, the corona resistance can be as longas 450 minutes, the cable still has high corona resistance after being tested for 7 days in high-temperature, high-humidity, oxidizing and acid environments, and the cracking phenomenon does not occur; meanwhile, the insulating property is good, and breakdown is not likely to happen. The method is stable in process, controllable in parameter, easy to repeat and suitable for large-scale production.

Description

【Technical field】 [0001] The invention relates to the technical field of cable materials, in particular to a corona-resistant cable and a preparation method thereof. 【Background technique】 [0002] Cables are wire products used to transmit and distribute electrical energy, consisting of wires and externally wrapped cable material. During the power transmission process of the cable, due to the high voltage, corona discharge phenomenon is prone to occur, which has a negative impact on power transmission. Corona refers to the phenomenon that partial discharge occurs on the surface of a charged body in a gas or liquid medium. It often occurs around the high-voltage cable and near the tip of the charged body. In these places, a large number of charges are easy to accumulate to form a local high-intensity electric field. When the intensity is greater than that of the air When the field strength required for ionization is reached, the air will be ionized, resulting in a corona dis...

Claims

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Application Information

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IPC IPC(8): H01B7/17H01B7/02H01B7/18H01B7/28H01B9/00H01B13/16H01B13/22H01B3/30C09D133/04C09D7/63C09D5/25C08L15/00C08L97/02C08K7/24C08K3/22
CPCC08K2003/2244C08L15/00C08L2205/16C09D133/04C09D7/63H01B3/308H01B7/02H01B7/17H01B7/18H01B7/2813H01B9/00H01B13/16H01B13/22C08K5/19C08L97/02C08K7/24C08K3/22
Inventor 方瑞莲陈善球韦伟洪
Owner 广西昌用电线电缆有限公司
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