CN103725064A - Polyamide enamelled wire insulating varnish and preparation method thereof - Google Patents

Abstract

The invention discloses polyamide enamelled wire insulating varnish which is characterized by being prepared from raw materials in parts by weight (kilogram) as follows: 13-17 parts of nylon 12, 14-20 parts of E-12 epoxy resin, 3-7 parts of calcium carbonate powder, 11-13 parts of polyamide resin, 11-14 parts of amino resin, 2-3 parts of neopentyl glycol, 4-6 parts of ethanediol, 10-11 parts of phthalic anhydride, 10-13 parts of adipic acid, 9-12 parts of glycerinum, 16-19 parts of 1,6-hexanediol diacrylate, 3-5 parts of 2-ethylhexyl phosphate, 6-7 parts of polyacrylamide, 2-3 parts of a cross-linking agent TAC (triallyl cyanurate), 5-7 parts of dimethyldichlorosilance, 1-2 parts of aluminum sulfate, 7-9 parts of an assistant, 80-100 parts of m, p-cresol and 110-120 parts of xylene. The temperature classification of a prepared wire enamel film is improved to155 DEG C or above, a film stripping and twisting test result shows that the adhesiveness of the film is high, and the heat resistance and the bond performance of the enamelled wire are remarkably improved.

Description

A kind of polyamide enamelled wire insullac and preparation method thereof

Technical field

The present invention relates to a kind of wire enamel properties-correcting agent, especially a kind of polyamide enamelled wire insullac and preparation method thereof.

Background technology

Enameled wire is a kind of electrical material, and it is at the high-strength insulating layer of a circular copper line surface processing thin layer, plays the effect with external insulation.By specification, can be processed into than hair thin lousiness line also, as thick cotton covered wire as thumb.Enameled wire has good insulation effect and waterproof ability.Aspect electrical equipment application very extensive, as electric motor, generator, water pump, electro-magnet, welding machine, household electrical appliance, cableless communication, loud speaker, tg, transformer etc.Wire enamel is the necessary insulating material of producing enameled wire, wire enamel requires to have good tack, physical strength, insulating property, resistance toheat, wear resisting property, salt spray resistance and adverse environment resistant performance etc., but there is thermotolerance, wear no resistance in common wire enamel, insufficient strength, heat-resisting level be lower than the problems such as 120 ℃, is difficult to meet the requirement of varying environment.Need to improve the formula of wire enamel and production technique, further improve the performance of enamel-cover paint, reduce its production cost.

Summary of the invention

Object of the present invention is just to provide a kind of polyamide enamelled wire insullac and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of polyamide enamelled wire insullac, it is characterized in that, by following weight part (kilogram) raw material make: nylon 12 13-17, E-12 epoxy resin 14-20, Paris white 3-7, polyamide resin 11-13, aminoresin 11-14, neopentyl glycol 2-3, ethylene glycol 4-6, Tetra hydro Phthalic anhydride 10-11, hexanodioic acid 10-13, glycerine 9-12, 1, 6 hexanediyl ester 16-19, ethylhexyl dihydrogen phosphate 3-5, polyacrylamide 6-7, linking agent TAC 2-3, dimethyldichlorosilane(DMCS) 5-7, Tai-Ace S 150 1-2, auxiliary agent 7-9, M-and P-cresols 80-100, dimethylbenzene 110-120,

Described auxiliary agent is made by following raw materials in part by weight: nano mica powder 0.2-0.3, Silane coupling agent KH550 1-2, Resorcinol 1-2, dipentaerythritol acrylate 5-7, linking agent TAC2-3, polyisobutene 2-3, dimethylaminoethyl methacrylate 10-12, ethyl ester butyl ester 4-6, Tenox PG 2-3, coix seed oil 1-2; Its preparation method is by each mixing of materials, is heated to 60-70 ℃, and stirring reaction 30-40 minute, obtains.

The preparation method of described polyamide enamelled wire insullac, is characterized in that comprising the following steps:

(1), take in dimethylbenzene, the reactor of M-and P-cresols input with agitator and be uniformly mixed, be heated to 45-55 ℃, add nylon 12, stir and be heated to 145-185 ℃, after dissolving completely to nylon 12, add again Paris white, polyacrylamide, neopentyl glycol, ethylene glycol, Tetra hydro Phthalic anhydride, hexanodioic acid, glycerine, insulation 4-5 hour;

(2), step (1) reaction mass is cooled to 70-80 ℃, add dimethyldichlorosilane(DMCS), 1,6 hexanediyl ester, ethylhexyl dihydrogen phosphate, linking agent TAC, auxiliary agent, keep temperature, stirring reaction 2-3 hour;

(3) add leftover materials, again, be warming up to 105-125 ℃, continue stirring reaction 2-3 hour;

(4), cooling material is to 45-60 ℃, is ground to 20-40 μ m slurry, filter and get final product.

The present invention has following beneficial effect: the enameled wire coat temperature classification making is brought up to more than 155 ℃, and paint film shows that through peeling off twisting test-results the tack of paint film is strong, has significantly improved resistance toheat and the adhesive property of enameled wire.

Embodiment

Described polyamide enamelled wire insullac, it is characterized in that, by following weight part (kilogram) raw material make: nylon 12 13-17, E-12 epoxy resin 14-20, Paris white 3-7, polyamide resin 11-13, aminoresin 11-14, neopentyl glycol 2-3, ethylene glycol 4-6, Tetra hydro Phthalic anhydride 10-11, hexanodioic acid 10-13, glycerine 9-12, 1, 6 hexanediyl ester 16-19, ethylhexyl dihydrogen phosphate 3-5, polyacrylamide 6-7, linking agent TAC 2-3, dimethyldichlorosilane(DMCS) 5-7, Tai-Ace S 150 1-2, auxiliary agent 7-9, M-and P-cresols 80-100, dimethylbenzene 110-120,

Described auxiliary agent by following weight part (kilogram) raw material makes: nano mica powder 0.2-0.3, Silane coupling agent KH550 1-2, Resorcinol 1-2, dipentaerythritol acrylate 5-7, linking agent TAC2-3, polyisobutene 2-3, dimethylaminoethyl methacrylate 10-12, ethyl ester butyl ester 4-6, Tenox PG 2-3, coix seed oil 1-2; Its preparation method is by each mixing of materials, is heated to 60-70 ℃, and stirring reaction 30-40 minute, obtains.

Preparation method comprises the following steps:

(1), take in dimethylbenzene, the reactor of M-and P-cresols input with agitator and be uniformly mixed, be heated to 45-55 ℃, add nylon 12, stir and be heated to 145-185 ℃, after dissolving completely to nylon 12, add again Paris white, polyacrylamide, neopentyl glycol, ethylene glycol, Tetra hydro Phthalic anhydride, hexanodioic acid, glycerine, insulation 4-5 hour;

(2), step (1) reaction mass is cooled to 70-80 ℃, add dimethyldichlorosilane(DMCS), 1,6 hexanediyl ester, ethylhexyl dihydrogen phosphate, linking agent TAC, auxiliary agent, keep temperature, stirring reaction 2-3 hour;

(3) add leftover materials, again, be warming up to 105-125 ℃, continue stirring reaction 2-3 hour;

(4), cooling material is to 45-60 ℃, is ground to 20-40 μ m slurry, filter and get final product.

Use paint of the present invention wire rod main performance index processed as follows:

1, tack is good;

2, temperature classification >=155 ℃, thermal shocking reaches 180 ℃ of paint films and does not open;

3, transformer oil resistant is 1200 hours/105 ℃, and paint film is without damage.

Claims (3)

1. a polyamide enamelled wire insullac, it is characterized in that, by following weight part (kilogram) raw material make: nylon 12 13-17, E-12 epoxy resin 14-20, Paris white 3-7, polyamide resin 11-13, aminoresin 11-14, neopentyl glycol 2-3, ethylene glycol 4-6, Tetra hydro Phthalic anhydride 10-11, hexanodioic acid 10-13, glycerine 9-12, 1, 6 hexanediyl ester 16-19, ethylhexyl dihydrogen phosphate 3-5, polyacrylamide 6-7, linking agent TAC 2-3, dimethyldichlorosilane(DMCS) 5-7, Tai-Ace S 150 1-2, auxiliary agent 7-9, M-and P-cresols 80-100, dimethylbenzene 110-120.

2. auxiliary agent according to claim 1 is made by following raw materials in part by weight: nano mica powder 0.2-0.3, Silane coupling agent KH550 1-2, Resorcinol 1-2, dipentaerythritol acrylate 5-7, linking agent TAC2-3, polyisobutene 2-3, dimethylaminoethyl methacrylate 10-12, ethyl ester butyl ester 4-6, Tenox PG 2-3, coix seed oil 1-2; Its preparation method is by each mixing of materials, is heated to 60-70 ℃, and stirring reaction 30-40 minute, obtains.

3. the preparation method of polyamide enamelled wire insullac according to claim 1, is characterized in that comprising the following steps:

(1), take in dimethylbenzene, the reactor of M-and P-cresols input with agitator and be uniformly mixed, be heated to 45-55 ℃, add nylon 12, stir and be heated to 145-185 ℃, after dissolving completely to nylon 12, add again Paris white, polyacrylamide, neopentyl glycol, ethylene glycol, Tetra hydro Phthalic anhydride, hexanodioic acid, glycerine, insulation 4-5 hour;

(2), step (1) reaction mass is cooled to 70-80 ℃, add dimethyldichlorosilane(DMCS), 1,6 hexanediyl ester, ethylhexyl dihydrogen phosphate, linking agent TAC, auxiliary agent, keep temperature, stirring reaction 2-3 hour;

(3) add leftover materials, again, be warming up to 105-125 ℃, continue stirring reaction 2-3 hour;

(4), cooling material is to 45-60 ℃, is ground to 20-40 μ m slurry, filter and get final product.