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A kind of golden polyurethane paint and preparation method thereof, enameled wire

A polyurethane coating and polyurethane solution technology, applied in the direction of polyurea/polyurethane coatings, coatings, cables, etc., can solve the problems of easy decolorization, decline in electrical properties of enameled wires, and the inability of hue to meet actual production needs.

Active Publication Date: 2021-11-19
苏州东特绝缘科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional golden polyurethane enameled wire is easy to decolorize, the coloring effect of golden dye is poor, and the hue cannot meet the actual production needs
In addition, the surface of the enameled wire prepared by the currently commercially available golden polyurethane coating is prone to produce a large number of pinholes and particles, which will easily lead to a decrease in the electrical properties of the enameled wire, and in severe cases will cause a short circuit in the enameled wire

Method used

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  • A kind of golden polyurethane paint and preparation method thereof, enameled wire
  • A kind of golden polyurethane paint and preparation method thereof, enameled wire
  • A kind of golden polyurethane paint and preparation method thereof, enameled wire

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preparation example Construction

[0033] The present invention also provides a kind of preparation method of golden polyurethane coating, it comprises the steps:

[0034] The raw material components of the golden polyurethane paint according to any one of the present invention are mixed.

[0035] In one of the embodiments, in the step of mixing the raw material components of the golden polyurethane paint, the golden dye is first added to a dispersing solvent and mixed to obtain a golden dye dispersion, then the golden dye dispersion is mixed with the polyurethane solution, and then hot water is added. The cured phenolic resin was mixed to obtain a golden polyurethane paint.

[0036] Further, in the above mixing step, the grinding wheel is used for sufficient grinding or ultrasonic stirring for mixing, so as to achieve the purpose of mixing uniformly. Wherein, the grinding is performed at a heating temperature of 60-80 degrees centigrade for 2-3 hours at a rotation speed of 7500-8500 rpm and a linear speed of ...

Embodiment 1

[0039] A preparation method for golden polyurethane paint, comprising the steps of:

[0040] Add 3g tin sulfide golden dye, 100g amide solvent (N-methylpyrrolidone) in the homogenizer, grind 2h under rotating speed 3000rpm afterwards, then add 400g polyurethane solution (the solid content of polyurethane solution is 35wt%), then heat up to 60 degrees Celsius, and then disperse with ultrasonic stirring at 25 kHz for 2 hours. Add 52g of thermosetting phenolic resin (p-tert-butylphenolic resin), then heat to 60 degrees Celsius, grind for 2 hours with a grinding wheel at a speed of 8000rpm and a linear speed of 40m / s, and then filter with a 200-mesh filter screen to obtain golden polyurethane coating.

[0041] A preparation method for an enameled wire, comprising the steps of:

[0042] Use a mold to coat the above-mentioned golden polyurethane coating on the ∮0.05mm copper wire. The number of times of coating is 12 times, and it is enough to repeat the back coating for many time...

Embodiment 2

[0044] A preparation method for golden polyurethane paint, comprising the steps of:

[0045] Add 5g tin sulfide golden dye, 150g amide solvent (N-methylpyrrolidone) in the homogenizer, grind 2h under rotating speed 3000rpm afterwards, then add 500g polyurethane solution (the solid content of polyurethane solution is 35wt%), then heat up to 60 degrees Celsius, and then disperse with ultrasonic stirring at 25 kHz for 2 hours. Add 80g of thermosetting phenolic resin (p-tert-butylphenolic resin), then heat to 60 degrees Celsius, grind for 2 hours with a grinding wheel at a speed of 8000rpm and a linear speed of 40m / s, and filter with a 200-mesh filter screen to obtain golden polyurethane coating.

[0046] A preparation method for an enameled wire, comprising the steps of:

[0047]Use a mold to coat the above-mentioned golden polyurethane coating on the ∮0.05mm copper wire. The number of times of coating is 12 times, and it is enough to repeat the back coating for many times. Pla...

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Abstract

The invention discloses a golden polyurethane coating, a preparation method thereof and an enameled wire. Wherein, the golden polyurethane coating comprises the following components by mass: 400-500 parts of polyurethane solution, 3-5 parts of golden dye, 100-150 parts of dispersing solvent, 50-80 parts of thermosetting phenolic resin, wherein the golden dye selected from tin sulfide, and the dispersing solvent is selected from aromatic solvents or amide solvents. Tin sulfide with good heat resistance is added to the above-mentioned golden polyurethane paint as a golden dye, and the distribution ratio of each component is reasonable, and neither is dispensable. It has been verified by the inventor's experiment that compared with the golden polyurethane paint containing other golden dyes, the golden dye of the present invention does not decompose at high temperature and has good coloring performance.

Description

technical field [0001] The invention relates to the field of insulating coatings, in particular to a golden polyurethane coating, a preparation method thereof, and an enameled wire. Background technique [0002] Golden polyurethane coating is an important insulating coating. It not only has excellent electrical, mechanical and chemical properties, but also has direct solderability, so it is widely used in precision coils, motors, instruments, household appliances and other weak electrical products. The traditional golden polyurethane enameled wire is easy to decolorize, and the coloring effect of golden dye is poor, and the hue cannot meet the actual production needs. In addition, the surface of the enameled wire prepared by the currently commercially available golden polyurethane coating is prone to produce a large number of pinholes and particles, which may easily lead to a decrease in the electrical properties of the enameled wire, and even cause a short circuit in the en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D161/08C09D7/61C09D7/63C09D5/25H01B7/02
CPCC08K2003/3009C08L2203/202C09D175/04C09D7/61C09D7/63H01B3/308H01B7/02C08L61/06C08K3/30C08K5/18
Inventor 姚晓刚陈言臣李春江邹春旺奚寅春王文杰
Owner 苏州东特绝缘科技有限公司