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Corona-resistant coating for cable and preparation method of coating

A corona resistance and coating technology, applied in polyether coatings, coatings and other directions, can solve the problems of easy aging and cracking, low corona resistance performance, poor corona resistance effect, etc., achieving good insulation, not easy to crack and aging , The effect of not easy to break down

Inactive Publication Date: 2020-12-29
广西昌用电线电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a corona-resistant coating for cables and its preparation method in view of the problems that the corona-resistant coatings currently used for cables have low corona-resistant properties, poor corona-resistant effects and easy aging and cracking.

Method used

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  • Corona-resistant coating for cable and preparation method of coating
  • Corona-resistant coating for cable and preparation method of coating
  • Corona-resistant coating for cable and preparation method of coating

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A corona-resistant coating for cables, comprising the following raw materials in parts by weight: 45 parts of acrylic resin, 500 parts of ethanol, 0.3 parts of N,N'-diisopropylcarbodiimide, 1.2 parts of perfluoropolyether, 30 parts of dried blood extract, 7 parts of mica, 2.5 parts of graphite boron nitride, 0.11 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium, 15 parts of porphyrin compound, 4 parts of zirconium oxide and 0.13 parts of cetyltrimethylammonium bromide.

[0033] Wherein, the porphyrin compound is porphine or tetraphenylporphyrin.

[0034] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 5 parts of dragon's blood, add water to immerse, boil for 45 minutes, then filter, collect the filter residue to obtain the filter residue I, add 30 parts of ethanol to the filter residue I, and heat it at 80 ° C. Heating under reflux for 60 minutes, then filtering, collecting the filter residue to ...

Embodiment 2

[0044] A corona-resistant coating for cables, comprising the following raw materials in parts by weight: 65 parts of acrylic resin, 700 parts of ethanol, 1.1 parts of N,N'-diisopropylcarbodiimide, 2.4 parts of perfluoropolyether, 60 parts of dried blood extract, 19 parts of mica, 6.5 parts of graphite boron nitride, 0.23 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium, 23 parts of porphyrin compound, 11 parts of zirconium oxide and 0.21 parts of cetyltrimethylammonium bromide.

[0045] Among them, the porphyrin compound is 5,15-ethynylphenyl-10,20-phenylporphyrin.

[0046] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 13 parts of dragon's blood, add water to immerse, boil for 55 minutes, then filter, collect the filter residue to obtain the filter residue I, add 80 parts of ethanol to the filter residue I, and heat it at 90°C Heating under reflux for 90 minutes, and then filtering, collecting the fil...

Embodiment 3

[0056] A corona-resistant coating for cables, comprising the following raw materials in parts by weight: 50 parts of acrylic resin, 550 parts of ethanol, 0.5 parts of N,N'-diisopropylcarbodiimide, 1.5 parts of perfluoropolyether, 40 parts of dragon's blood extract, 10 parts of mica, 3 parts of graphite-type boron nitride, 0.15 parts of benzylidene dichlorobis(tricyclohexylphosphine) ruthenium, porphyrin compound 18 parts, 6 parts of zirconia and 0.15 parts of cetyltrimethylammonium bromide; the particle size of zirconia is 50 nanometers; the molecular weight of perfluoropolyether is 3000Da.

[0057] Among them, the porphyrin compound is 5,10,15,20-tetrakis(4-ethynylphenyl)porphyrin.

[0058] The preparation method of the dragon's blood extract is as follows: according to the weight ratio, take 7 parts of dragon's blood, add water to immerse, boil for 47 minutes, then filter, collect the filter residue to obtain the filter residue I, add 38 parts of ethanol to the filter residu...

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Abstract

The invention provides a corona-resistant coating for a cable and a preparation method of the corona-resistant coating, and particularly relates to the technical field of cable materials. The coatingis prepared from the following raw materials: acrylic resin, ethanol, N,N'-diisopropylcarbodiimide, perfluoropolyether, resina draconis extract, mica, graphite type boron nitride, benzylidene-bis(triphenylphosphine)ruthenium dichloride, porphyrin compound, zirconium oxide and hexadecyltrimethylammonium bromide. The preparation method comprises the following steps: a, primary catalytic reaction; b,stabilizing treatment; c, secondary catalytic reaction; d, charging of nitrogen; and e, pre-coordination treatment. The coating disclosed by the invention can be well attached to a wire, does not generate air intermittence, has an air isolation effect and a highly conjugated structure, can play a role in preventing corona from multiple aspects, has corona resistance of 250 minutes, is not easy tocrack, has good insulativity and is not easy to break down. 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 coating for cables 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...

Claims

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Application Information

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IPC IPC(8): C09D187/00C09D171/00C09D7/61C09D7/65C09D5/25C08G81/02
CPCC09D187/005C09D7/61C09D7/65C09D5/00C08G81/021C08K2003/2244C08K2003/385C08L71/00C08K3/22C08K3/34C08K3/38
Inventor 陈善球方瑞莲韦伟洪
Owner 广西昌用电线电缆有限公司
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