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Heat dissipation insulating coating as well as preparation method and application thereof

A technology of insulating coatings and particles, which is applied in the direction of epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor heat dissipation performance of wire insulation coatings, achieve superior aging resistance, good heat dissipation performance, and prevent safety hidden effect

Active Publication Date: 2020-04-10
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a heat dissipation insulating coating and its preparation method and application, which solves the problem of poor heat dissipation performance of the existing wire insulating coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment is the preparation of thermal insulation coating

[0044] (1) Preparation of polyurethane resin: mix 1,6-hexamethylene diisocyanate and fluoroethyl vinyl ether polyol according to the mass fraction of 70%:20%, and then add 10% 1,6-hexamethylene diisocyanate Alcohol is used as a cross-linking agent. In a reaction kettle at 230°C, dimethylethanolamine is used as a catalyst to react at a stirring speed of 1800r / min for 30min to obtain a polyurethane resin.

[0045] (2) Preparation of film-forming agent: Weigh propylene glycol methyl ether acetate, ethylene glycol, propylene glycol, methyl laurate and hexanediol butyl ether acetate in sequence at a mass ratio of 20:20:15:5. Mix propylene glycol methyl ether acetate, ethylene glycol, propylene glycol, methyl laurate and hexanediol butyl ether acetate at room temperature (25° C.), and stir at a speed of 1500 r / min for 1 hour to obtain a film-forming agent.

[0046] (3) Preparation of heat-dissipating and insu...

Embodiment 2

[0048] This embodiment is the preparation of thermal insulation coating

[0049] (1) Preparation of polyurethane resin: mix 1,6-hexamethylene diisocyanate and fluoroethyl vinyl ether polyol according to the mass fraction of 70%:20%, and then add 10% 1,6-hexamethylene diisocyanate Alcohol is used as a cross-linking agent. In a reaction kettle at 230°C, dimethylethanolamine is used as a catalyst to react at a stirring speed of 1800r / min for 30min to obtain a polyurethane resin.

[0050](2) Preparation of film-forming agent: Weigh propylene glycol methyl ether acetate, ethylene glycol, propylene glycol, methyl laurate and hexanediol butyl ether acetate in sequence at a mass ratio of 20:20:15:5. Mix propylene glycol methyl ether acetate, ethylene glycol, propylene glycol, methyl laurate and hexanediol butyl ether acetate at room temperature (25° C.), and stir at a speed of 1500 r / min for 1 hour to obtain a film-forming agent.

[0051] (3) Preparation of heat-dissipating and insul...

Embodiment 3

[0058] Carry out performance test to the cured thermal insulation coating that embodiment 1~2 makes, the insulating coating that comparative example 1 cures and the commercial coating of curing

[0059] (1) The heat-dissipating insulating coating cured in Examples 1-2, the insulating coating cured in Comparative Example 1 and the cured commercial coating were respectively tested under the conditions of 60° C. and 300W ultraviolet lamp radiation.

[0060] The heat dissipation insulating coating provided by embodiment 1 has an aging resistance time of 4800h, the heat dissipation insulating coating provided by embodiment 2 has an aging resistance time of 4000h, the insulating coating provided by comparative example 1 has an aging resistance time of 3000h, and the commercial coating has an aging resistance time of 2000h aging time.

[0061] To sum up, the heat-dissipating and insulating coating in Example 1 has great advantages in weather resistance and excellent aging resistance....

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Abstract

The invention relates to the technical field of insulating coatings, in particular to a heat dissipation insulating coating as well as a preparation method and application thereof. Under the radiationcondition of a 300W ultraviolet lamp at 60 DEG C, the heat dissipation insulating coating has the aging-resistant time of 4800h, the aging-resistant performance is excellent, and the maintenance frequency and the maintenance cost can be greatly reduced; the volume resistivity of the cured coating is larger than 1012 ohm.m, the alternating current dielectric strength is larger than 35 kv / mm, bareconductor electric leakage can be effectively prevented, and potential safety hazards caused by bare conductor breakdown are prevented; the comprehensive thermal radiation coefficient of the cured coating is greater than 0.89 epsilon, and the cured coating has good heat dissipation performance and can effectively prevent the ablation phenomenon of bare conductor after lightning stroke.

Description

technical field [0001] The invention relates to the technical field of insulating coatings, in particular to a heat-dissipating insulating coating and its preparation method and application. Background technique [0002] The overhead bare wires of the urban distribution network are erected close to buildings, trees, and fish ponds, which cannot reach a safe distance, and short-circuit power outages and electric shock casualties are prone to occur. The bare wires of the rural distribution network are caused by bird damage, tree bamboo, and small animal contact, resulting in line trips and power outages, and even damage to the line body, which seriously affects the safe and stable operation of the distribution network. Therefore, the overhead bare wires of the distribution network need certain insulation measures to ensure safe operation. Now common insulation methods include installing insulating ferrules, using containment, supporting insulators, installing interphase space...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D163/00C09D5/25C09D7/61C09D7/80
CPCC08K2003/265C08K2003/385C08K2201/003C08L2201/08C08L2203/20C09D5/00C09D175/04C09D7/61C09D7/70C09D7/80C08L63/00C08K13/04C08K7/28C08K3/38C08K3/26
Inventor 吕旺燕岳楹超董重里聂铭黄丰
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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