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A low-temperature fast-curing glass fiber-wrapped wire impregnation resin and preparation method thereof

A technology of glass fiber-wrapped wire and impregnated resin, which is applied in the direction of coating, polyester coating, etc., can solve the problems of long curing time, hard and brittle toughness of the paint film, high curing temperature, etc., to avoid cracking of the insulating structure, mechanical and chemical resistance Guaranteed effect

Active Publication Date: 2017-02-22
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, especially for the problems of hard and brittle paint film and poor toughness, high curing temperature and long curing time in the prior art, and to provide a low-temperature fast-curing glass fiber Covered wire impregnating resin and preparation method thereof

Method used

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  • A low-temperature fast-curing glass fiber-wrapped wire impregnation resin and preparation method thereof
  • A low-temperature fast-curing glass fiber-wrapped wire impregnation resin and preparation method thereof
  • A low-temperature fast-curing glass fiber-wrapped wire impregnation resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0051] Add 384kg of linseed oil and 135kg of glycerol into the reactor Ⅰ, add 0.2kg of lithium hydroxide under stirring, keep warm at 265℃~270℃ for 30 minutes, cool down to 200℃, and add 320kg of polyester powder material, 0.1kg of zinc acetate, heated up to 230°C to 240°C, and after 3 hours of heat preservation and reaction, turn on the vacuum pump to make the vacuum in the reactor reach above 0.086MPa in 29 minutes. After reacting for 1 hour, add 200kg of isobenzene Formic acid, 98kg of tris (2-hydroxyethyl) isocyanurate (hereinafter referred to as Saike), 0.4kg of stannous chloride, the temperature is controlled to react at 230°C, the reaction is refluxed for 2 hours, and the vacuum pump is turned on to make the reaction The vacuum degree in the kettle reaches above 0.086MPa in 30 minutes, and when the gelation time reaches (280°C±1°C, 85s), the reaction ends, and the hyperbranched polyester resin is prepared for use.

Embodiment 1-2

[0053] Add 400kg of tung oil and 160kg of trimethylolpropane into the reactor Ⅰ, add 0.2kg of lithium hydroxide under stirring, keep warm at 250℃~255℃ for 30 minutes, cool down to 200℃, and add 360kg of polyester Powder, 0.1㎏ zinc acetate, heat up to 255℃~260℃, after 4 hours of heat preservation reaction, turn on the vacuum pump, make the vacuum degree in the reactor reach above 0.086MPa in 20 minutes, after 2 hours of reaction, add 220㎏ m-benzene in sequence Diformic acid, 75㎏ Saike, 0.4㎏ stannous chloride, control the temperature to react at 200°C, reflux for 3 hours, turn on the vacuum pump, make the vacuum in the reactor reach 0.086MPa or more in 24 minutes, when the gelling time When the temperature reaches (280°C±1°C, 70s), the reaction ends, and a hyperbranched polyester resin is prepared for future use.

Embodiment 1-3

[0055] Add 148kg of linseed oil, 257kg of tung oil, 94kg of glycerol, and 36kg of trimethylolpropane into the reactor Ⅰ, add 0.2kg of lithium hydroxide under stirring, and keep warm at 275℃~280℃ for 30 minutes , lower the temperature to 200°C, add 300kg of polyester powder and 0.1kg of zinc acetate, heat up to 240°C-250°C, and after 3.5 hours of heat preservation, turn on the vacuum pump to make the vacuum in the reactor reach above 0.086MPa in 27 minutes. After reacting for 2.5 hours, add 180 kg of isophthalic acid, 60 kg of SEC, and 0.4 kg of stannous chloride in sequence, control the temperature to react at 225 ° C, and react at reflux for 3.5 hours. Turn on the vacuum pump to make the vacuum in the reactor at It reached above 0.086MPa in 21 minutes, and when the gelation time reached (280°C±1°C, 105s), the reaction was over, and the hyperbranched polyester resin was prepared for use.

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Abstract

The invention discloses a low-temperature rapid-curing impregnating resin for a glass-fiber-clad conductor and a preparation method of the low-temperature rapid-curing impregnating resin. The impregnating resin is characterized by being prepared from the following components in parts by mass: 1,000 parts of hyperbranched polyester resin, 1,140 to 1,350 parts of solvent A, 120 to 150 parts of thermoplastic phenolic resin, 70 to 100 parts of modified etherified amino resin, and 20 to 40 parts of accelerant. The preparation method comprises the steps of preparing the hyperbranched polyester resin through a catalyst; preparing the accelerant; feeding the hyperbranched polyester resin and the solvent A into a reactor; heating to 120 DEG C; uniformly agitating; cooling to less than 80 DEG C; feeding the thermoplastic phenolic resin and the modified etherified amino resin; uniformly agitating; cooling to less than 50 DEG C; feeding the accelerant; uniformly agitating; and filtering to obtain the filtrate which is the impregnating resin. The impregnating resin is applicable to the manufacturing of glass fiber winding coil parts of an electric welder, a plasma cutting machine, a voltage stabilizer, a dry type transformer, an electric reactor of a large generator unit and the like.

Description

technical field [0001] The invention belongs to an impregnating resin for electrical insulation and its preparation, and relates to a low-temperature fast-curing impregnating resin for glass fiber-wrapped wires and a preparation method thereof. The low-temperature fast-curing glass fiber-wrapped wire impregnating resin prepared by the invention is specially used for impregnating the glass fiber-wrapped wire. Background technique [0002] Glass wire covered wire is formed by wrapping two layers of non-alkali glass wire in opposite directions on the wire, dipping impregnated resin and then baking. It has the advantages of good corona resistance, strong overload capacity, and low cost. It is widely used in electric welding. Manufacture of glass filament winding and coil parts such as machine, plasma cutting machine, voltage stabilizer, dry-type transformer and reactor of large generator set. At present, the low-temperature fast-curing impregnation resin used for glass fiber-cl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D161/06C09D161/10C09D161/32C09D7/12C08G63/685
CPCC08G63/6854C08L2205/03C09D7/63C09D167/00C08L61/06C08L61/32C08K5/19
Inventor 马卜张先来文清云支肖琼
Owner SICHUAN DONGFANG INSULATING MATERIAL
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