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LED light-cured insulating paint capable of being directly welded and preparation method of LED light-cured insulating paint

An insulating varnish and light-curing technology, which is applied in the direction of insulators, coatings, electrical components, etc., can solve the problems of increasing process steps, no replacement, increasing labor costs and work efficiency of downstream customers

Pending Publication Date: 2022-03-01
瑞通高分子科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many companies have started to develop UV-cured enameled wire insulating varnish, but no one has studied LED-cured enameled wire insulating varnish, and there is no alternative to traditional solderable polyurethane paint. For products that cannot be directly soldered, only Remove the paint by chemical or mechanical methods, increase the process steps, increase the labor cost and work efficiency of downstream customers, and the UV-LED light-curing insulating varnish we propose is very forward-looking and valuable. It can not only be used in In terms of performance, it replaces traditional polyurethane insulating paint, and has low energy consumption, environmental protection and high efficiency that traditional polyurethane insulating paint does not have

Method used

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  • LED light-cured insulating paint capable of being directly welded and preparation method of LED light-cured insulating paint
  • LED light-cured insulating paint capable of being directly welded and preparation method of LED light-cured insulating paint
  • LED light-cured insulating paint capable of being directly welded and preparation method of LED light-cured insulating paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 prepares polyester polyol

[0040] The coating is prepared according to the formula in Table 1.

[0041] JZC-1 JZC-2 1 Phthalic acid 55.00 51.50 2 Adipic acid 11.80 16.5 3 ethanolamine 5.5 4.0 4 Ethylene glycol 24.0 27.0 5 Trimethylolpropane 3.2 3.0 total 100.0 100.0

[0042]First put 1, 2, 3, 4, 5 into the reaction kettle according to the proportion, heat up and stir, when the temperature reaches 160°C, start to add antioxidant, pass nitrogen and xylene, react at 200°C for 12-15 hours, acid When the value is <3mgKOH / g, stop heating, vacuumize for 1h, remove xylene and water, and obtain light yellow viscous hydroxyl-terminated polyester with a molecular weight of about 2000g / mol.

Embodiment 2

[0043] Embodiment 2 prepares polyurethane acrylate

[0044]

[0045] First, add self-made polyester polyol JZC-1 and catalyst to the isocyanate, control the reaction temperature at 65-68°C for 2 hours, then add HEA, catalyst, and polymerization inhibitor dropwise, control the reaction temperature at 75-78°C for 2.5 hours, and test The isocyanate value is less than 1%, and the product can be obtained.

[0046]

[0047]

[0048] First, add self-made polyester polyol JZC-2 and catalyst to the isocyanate, control the reaction temperature at 65-68°C for 2 hours, then add HEA, catalyst and polymerization inhibitor dropwise, control the reaction temperature at 75-78°C for 2.5 hours, test The isocyanate value is less than 1%, and the product can be obtained.

Embodiment 3

[0049] Embodiment 3 prepares the UV-LED photocurable insulation coating that can be directly welded

[0050] 3-A 3-B 3-C 3-D 3-E 1 611B-85 35.0 - - - - 2 PUA-A - 35.0 - - - 3 PUA-B - - 35.0 - - 4 PUA-C - - - 35.0 - 5 PUA-D - - - - 35.0 6 DR-E522 5.0 5.0 5.0 5.0 5.0 7 L-6030 8.0 8.0 8.0 8.0 8.0 8 62158 8.0 8.0 8.0 8.0 8.0 9 SR531 19.0 19.0 19.0 19.0 19.0 10 DMAA 5.5 5.5 5.5 5.5 5.5 11 PHEA 16.0 16.0 16.0 16.0 16.0 12 TPO 0.5 0.5 0.5 0.5 0.5 13 819 1.5 1.5 1.5 1.5 1.5 14 Z-6030 1.0 1.0 1.0 1.0 1.0 15 Auxiliary 0.5 0.5 0.5 0.5 0.5

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Abstract

The invention relates to a preparation method of a directly-weldable UV-LED photocuring insulating paint coating for enameled wires, the directly-weldable UV-LED photocuring insulating paint coating comprises an oligomer, a monomer, a photoinitiator, an adhesion promoter and a surface additive, and the oligomer is a mixture of urethane acrylate, modified epoxy acrylate, polyester modified acrylate and acrylate. The polyurethane acrylate is obtained by reaction of hydroxyl-containing acrylate, isocyanate, polyester polyol, a polymerization inhibitor and a catalyst; wherein the polyester polyol is obtained by reaction of isophthalic acid, adipic acid, ethanolamine, ethylene glycol, trimethylolpropane and a catalyst; the catalyst is an organic bismuth catalyst selected from bismuth naphthenate. According to the UV-LED light-cured insulating paint, on the basis that the adhesive force and the thermal performance are guaranteed, tin soldering can be conducted at the temperature of 390 DEG C, no residues exist within 5 seconds, the breakdown strength reaches 80 kv / mm, and the saline pinhole is 0.

Description

technical field [0001] The invention belongs to the field of preparation of UV-LED (ultraviolet light curing) coatings, and in particular relates to a UV-LED photocuring insulating varnish for enameled wires and a preparation method thereof. Background technique [0002] Enameled wire insulating varnish is one of the necessary conditions to ensure the normal operation of electrical equipment, and occupies an important position in the field of electrical insulation. At present, the mainstream products in China are still traditional solvent-based heat-curing insulating varnishes, which not only consume a lot of heat energy, but also contain a large amount of flammable, explosive and toxic solvents such as benzene and ketone esters, which will evaporate in the construction environment. Threat to human health and cause environmental pollution, so it is very important to develop a new type of non-polluting and low-energy-consumption insulating varnish, and UV-curable insulating v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/16C09D7/63C09D5/25
CPCC09D175/16C09D7/63H01B3/308C08K5/5425C08K5/5435
Inventor 王艳辉余宗萍杨鹏飞
Owner 瑞通高分子科技(浙江)有限公司
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