CN105086735A - Enameled wire insulation varnish - Google Patents

Abstract

The invention discloses enameled wire insulation varnish. The enameled wire insulation varnish comprises, by weight, 50-70 parts of n-butylated urea-formaldehyde resin, 12-26 parts of diaminodiphenylmethane, 5-14 parts of 2-ethyl-4-methylimidazole, 8-19 parts of methyl styrene, 3-12 parts of N-methyl-2-pyrrolidone, 5-7 parts of paraformaldehyde, 1-3 parts of diallyl phthalate, 10-15 parts of benzenediol and 2-5 parts of benzoyl peroxide. The enameled wire insulation varnish can be produced by simple and easy processes, is not mixed with impurities easily, has excellent lubricity, can form a uniform low-foam paint film on the enameled wire surface, reduces the coated insulation varnish amount, reduces a production cost and well guarantees product quality.

Description

A kind of enamelled wire insulated paint

Technical field

The present invention relates to a kind of enamelled wire insulated paint.

Background technology

Insullac is a kind of special varnish in paint class, and insullac is based on high molecular polymer, can be solidified into the important insulating material of insulating film or insulation entirety under certain conditions.The film layer structure of insullac is different from general paint, and its specific resistance is large, good heat conductivity, and has firm mechanical property and good moisture resistance.Existing enameled wire needs at its surface-coated insullac in making processes, therefore can enameled wire meet the requirement of enameled wire user is inseparable with the Performance and quality of the wire enamel that it is coated with, but existing insullac oilness is general, when enamelled wire surface applies, paint film uneven causing easily produces defect, needing the insullac amount increasing coating in order to prevent defect, which enhancing production cost and cannot quality product be ensured.

Summary of the invention

The object of the invention is to solve existing insullac oilness general, when enamelled wire surface applies, paint film uneven causing easily produces defect, needing the insullac amount increasing coating in order to prevent defect, which enhancing production cost and the problem of quality product cannot be ensured.

The technical solution used in the present invention is: a kind of enamelled wire insulated paint, and raw material comprises by weight: 50-70 part normal-butyl etherificate urea-formaldehyde resin, 12-26 part diaminodiphenylmethane, 5-14 part 2-ethyl-4-methylimidazole, 8-19 part vinyl toluene, 3-12 part N-Methyl pyrrolidone, 5-7 part paraformaldehyde, 1-3 part Phthalic acid, diallyl ester, 10-15 part dihydroxy-benzene, 2-5 part benzoyl peroxide;

Preparation method is heated to 90-120 DEG C for normal-butyl etherificate urea-formaldehyde resin is put into reactor; Diaminodiphenylmethane, vinyl toluene, Phthalic acid, diallyl ester and benzoyl peroxide insulated and stirred is added 60 ~ 90 minutes after being cooled to 70-80 DEG C; Add 2-ethyl-4-methylimidazole, N-Methyl pyrrolidone, dihydroxy-benzene and paraformaldehyde, 90-100 DEG C of insulated and stirred 30 ~ 60 minutes.

The invention has the beneficial effects as follows: have employed after after the present invention, insullac produce simple to operation, be not easy to mix impurity, the insullac produced has excellent oilness, when enamelled wire surface apply, paint film is evenly, foaming number is little, decrease and need the insullac amount of coating, reduce production cost, can be good at guarantee quality product.

Embodiment

Embodiment 1: raw material comprises by weight: 50 parts of normal-butyl etherificate urea-formaldehyde resins, 26 parts of diaminodiphenylmethane, 5 parts of 2-ethyl-4-methylimidazoles, 8 parts of vinyl toluenes, 3 parts of N-Methyl pyrrolidone, 5 parts of paraformaldehydes, 3 portions of Phthalic acid, diallyl esters, 15 parts of dihydroxy-benzenes, 5 parts of benzoyl peroxides.

Embodiment 2: raw material comprises by weight: 70 parts of normal-butyl etherificate urea-formaldehyde resins, 12 parts of diaminodiphenylmethane, 14 parts of 2-ethyl-4-methylimidazoles, 19 parts of vinyl toluenes, 12 parts of N-Methyl pyrrolidone, 7 parts of paraformaldehydes, 1 portion of Phthalic acid, diallyl ester, 10 parts of dihydroxy-benzenes, 2 parts of benzoyl peroxides.

Embodiment 3: raw material comprises by weight: 60 parts of normal-butyl etherificate urea-formaldehyde resins, 15 parts of diaminodiphenylmethane, 9 parts of 2-ethyl-4-methylimidazoles, 14 parts of vinyl toluenes, 8 parts of N-Methyl pyrrolidone, 6 parts of paraformaldehydes, 2 portions of Phthalic acid, diallyl esters, 13 parts of dihydroxy-benzenes, 4 parts of benzoyl peroxides.

Those skilled in the art should know; protection scheme of the present invention is not limited only to the above embodiments; various permutation and combination and conversion can also be carried out on the basis of above-described embodiment; under the prerequisite without prejudice to spirit of the present invention, the various conversion that the present invention carries out all are dropped in protection scope of the present invention.

Claims (1)

1. an enamelled wire insulated paint, is characterized in that raw material comprises by weight: 50-70 part normal-butyl etherificate urea-formaldehyde resin, 12-26 part diaminodiphenylmethane, 5-14 part 2-ethyl-4-methylimidazole, 8-19 part vinyl toluene, 3-12 part N-Methyl pyrrolidone, 5-7 part paraformaldehyde, 1-3 part Phthalic acid, diallyl ester, 10-15 part dihydroxy-benzene, 2-5 part benzoyl peroxide;

Preparation method is heated to 90-120 DEG C for normal-butyl etherificate urea-formaldehyde resin is put into reactor; Diaminodiphenylmethane, vinyl toluene, Phthalic acid, diallyl ester and benzoyl peroxide insulated and stirred is added 60 ~ 90 minutes after being cooled to 70-80 DEG C; Add 2-ethyl-4-methylimidazole, N-Methyl pyrrolidone, dihydroxy-benzene and paraformaldehyde, 90-100 DEG C of insulated and stirred 30 ~ 60 minutes.