CN103146299B - Alcohol soluble self-adhering paint that a kind of moisture-resistant is sticky and preparation method thereof - Google Patents

Alcohol soluble self-adhering paint that a kind of moisture-resistant is sticky and preparation method thereof Download PDF

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CN103146299B
CN103146299B CN201310109320.6A CN201310109320A CN103146299B CN 103146299 B CN103146299 B CN 103146299B CN 201310109320 A CN201310109320 A CN 201310109320A CN 103146299 B CN103146299 B CN 103146299B
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alcohol
parts
epoxy resin
molten nylon
moisture
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CN103146299A (en
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王成宜
陈永凤
史昌明
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Jiangsu Jiahe Electronic Materials Co ltd
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LIYANG JIAHE ELECTRONIC MATERIAL CO Ltd
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Abstract

The invention discloses sticky alcohol soluble self-adhering paint of a kind of moisture-resistant and preparation method thereof, the method adopts M-and P-cresols, dimethylbenzene, butanols as mixed solvent, and the molten nylon of ES-08, IC alcohol, epoxy resin is as main raw material, and coordinating with lubrication prescription is that auxiliary agent forms.Add the molten nylon of alcohol in a device to dissolve as intermediate semi-finished products using mixed solvent, then add epoxy resin and certain proportion lubricant gives modification, further reaction cost product.The present invention due to have employed high molecular, high softening-point, good moisture resistance epoxy resin as the cooperation modified resin of the molten nylon of alcohol, the lubrication prescription of adding proper ratio and the mixed solvent with progressively steadily evaporation coordinate, and the moisture-resistant significantly improving enameled wire self-adhesion paint glues characteristic; Make the finished product obtained have good homogeneous and stability in storage simultaneously; Have employed the lower chemical composition of chemically reactive in formula to coordinate, reduce product in process of production to the requirement of working condition, make the performance of product more stable simultaneously.

Description

Alcohol soluble self-adhering paint that a kind of moisture-resistant is sticky and preparation method thereof
Technical field
The present invention relates to a kind of enameled wire self-adhesion paint and preparation method thereof, particularly a kind of possess sticky alcohol soluble self-adhering paint of moisture-resistant and preparation method thereof.
Background technology
Alcohol soluble self-adhering paint is a kind of self-adhesion paint had the call in self-binding enamel wire paint, adhesion characteristic is dissolved owing to possessing lower alcohols (ethanol, methyl alcohol), improve the working (machining) efficiency of coil, be widely used in the manufacture there is (no) the special electronic wire of skeleton such as electroacoustic coil, magnetic card coil, telefault, special purpose micromotor coil.
The nylon (PA) of usual employing alcohol dissolubility as the main film forming material of such self-adhesion paint, then coordinates using resol as modified resin sintetics.In actual applications, because the molten nylon of alcohol has water absorbability and low-crystalline (hardness is lower), often cause (≤Φ 0.10mm) at room temperature sticky line (sticky axle) when producing fine dimension wire, therefore finished wire rod must adopt harsh condition of storage (≤25 DEG C, air conditioner dehumidification) store, cause finished wire rod often to glue axle to scrap, quality is very unstable; The high chemically reactive of resol, cause the production technique of product very narrow, enameled wire finished product storage period is short.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides and a kind ofly can meet production of wirerods requirement, have the alcohol soluble self-adhering paint that moisture-resistant glues function.
Present invention also offers a kind of preparation method of this alcohol soluble self-adhering paint.
Technical scheme: for solving the problems of the technologies described above, the alcohol soluble self-adhering paint that a kind of moisture-resistant provided by the invention is sticky, moiety is as follows by weight: M-and P-cresols 35 ~ 44 parts, dimethylbenzene 35 ~ 48 parts, 5 ~ 9 parts of butanols, 4.4 ~ 4.9 parts of molten nylon of ES-08 alcohol, 4.4 ~ 4.9 parts of molten nylon of IC alcohol, 1.2 ~ 1.8 part of 607 epoxy resin, 1.2 ~ 1.8 part of 604 epoxy resin, 0.12 ~ 0.15 part of lubrication prescription.
Preferably, described lubrication prescription adopts amine hydroxybenzene.
Provided by the invention have the alcohol soluble self-adhering paint that moisture-resistant glues function, its step comprises as follows: (1) by weight, take M-and P-cresols 35 ~ 44 parts, dimethylbenzene 35 ~ 48 parts, 5 ~ 9 parts, butanols, drop into and be uniformly mixed with in the reactor of agitator, be heated to 45 ~ 50 DEG C, add 4.4 ~ 4.9 parts of molten nylon of ES-08 alcohol, the molten nylon of ES-08 alcohol is buied by Shanghai Zhen Wei matrix material company limited, 4.4 ~ 4.9 parts of molten nylon of IC alcohol, the molten nylon of IC alcohol is buied by BASF stock company, stir and be heated to 90 ~ 100 DEG C, insulation 2.5 ~ 3h, until the molten nylon of ES-08 alcohol and the molten nylon of IC alcohol dissolve completely, then 50 ~ 60 DEG C are cooled to, generate work in-process A,
(2) by 1.2 ~ 1.8 part of 607 epoxy resin, 1.2 ~ 1.8 part of 604 epoxy resin, put into respectively in the reactor of above-mentioned work in-process A and stir, 2 ~ 3h is incubated until 607 epoxy resin and the dissolving of 604 epoxy resin mix at 50 ~ 60 DEG C of temperature, generate work in-process B, adopt 607 epoxy resin and 604 epoxy resin of high molecular in this step, because these two kinds of resins are low oxirane value resins, therefore the wet viscosity of finished product can effectively be improved, in process of production the conditions permit of producing is had to the rangeability of certain limit simultaneously, reduce the requirement to working condition, add the yield rate of production.
(3) work in-process B is cooled to 40 ~ 45 DEG C, adds 0.12 ~ 0.15 part of lubrication prescription, and insulated and stirred 1 ~ 1.5h at this temperature;
(4) finished product prepared by step (3) adopts >=250 object filtering nets, after filtration obtained product.
Beneficial effect: the present invention due to have employed high molecular, high softening-point, good moisture resistance epoxy resin as the cooperation modified resin of the molten nylon of alcohol, the lubrication prescription of adding proper ratio and the mixed solvent with progressively steadily evaporation coordinate, and the moisture-resistant significantly improving enameled wire self-adhesion paint glues characteristic; Between each component simultaneously selected, there is good intermiscibility, in conjunction with process matched therewith, make the finished product obtained have good homogeneous and stability in storage; Have employed the lower chemical composition of chemically reactive in formula to coordinate, reduce product in process of production to the requirement of working condition, make the performance of product more stable simultaneously.After testing, obtained according to the inventive method self-adhesion paint reaches following performance perameter index:
A, outward appearance: as clear as crystal, mechanical impurity homogeneous liquid;
B, viscosity: 50 ± 10 seconds (T-4 cup/30 DEG C);
C, solids content: 12 ± 1%(180 DEG C/1g/1h).
The enameled wire moisture-resistant viscosity adopting the present invention to manufacture can be good, use and the memory cycle long, can reduce simultaneously and transport and carrying cost.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1:
The alcohol soluble self-adhering paint that moisture-resistant is sticky, moiety is as follows by weight: M-and P-cresols 35 parts, dimethylbenzene 48 parts, 5 parts of butanols, 4.9 parts of molten nylon of ES-08 alcohol, 4.9 parts of molten nylon of IC alcohol, 1.2 part of 607 epoxy resin, 1.2 part of 604 epoxy resin, 0.12 part of amine hydroxybenzene.
The preparation method of the alcohol soluble self-adhering paint that described moisture-resistant glues, its step comprises as follows:
(1) by weight, by 35 parts of M-and P-cresols, 48 parts of dimethylbenzene, 5 parts of butanols add in the reactor with agitator and are uniformly mixed, and unlatching is heated to 45 ~ 50 DEG C, progressively add 4.9 parts of molten nylon of ES-08 alcohol, 4.9 parts of molten nylon of IC alcohol, stir simultaneously and be warmed up to 90 ~ 100 DEG C, insulation 2.5h, until the molten nylon of ES-08 alcohol and the molten nylon CL of IC alcohol, be then cooled to 50 ~ 60 DEG C, generate work in-process A;
(2) by 1.2 part of 607 epoxy resin, 1.2 part of 604 epoxy resin, progressively puts into respectively in the reactor of above-mentioned work in-process A material, fully stirs, at 50 ~ 60 DEG C of temperature, be incubated 2h until 607 epoxy resin and 04 epoxy resin is molten mixes, produce work in-process B;
(3) work in-process B is cooled to about 40 ~ 45 DEG C, adds 0.12 part of amine hydroxybenzene, and insulated and stirred 1h at this temperature;
(4) finished product is obtained with >=250 mesh filter screens filtrations.
Embodiment 2:
The alcohol soluble self-adhering paint that moisture-resistant is sticky, moiety is as follows by weight: M-and P-cresols 39 parts, dimethylbenzene 41 parts, 7 parts of butanols, 4.6 parts of molten nylon of ES-08 alcohol, 4.6 parts of molten nylon of IC alcohol, 1.5 part of 607 epoxy resin, 1.5 part of 604 epoxy resin, 0.13 part of amine hydroxybenzene.
The preparation method of the alcohol soluble self-adhering paint that described moisture-resistant glues, its step comprises as follows:
(1) by weight, by 39 parts of M-and P-cresols, 41 parts of dimethylbenzene, 7 parts of butanols add in the reactor with agitator and are uniformly mixed, and unlatching is heated to 45 ~ 50 DEG C, progressively add 4.6 parts of molten nylon of ES-08 alcohol, 4.6 parts of molten nylon of IC alcohol, stir simultaneously and be warmed up to 90 ~ 100 DEG C, insulation 3h, until the molten nylon of ES-08 alcohol and the molten nylon of IC alcohol dissolve completely, be then cooled to 50 ~ 60 DEG C, produce work in-process A;
(2) by 1.5 part of 607 epoxy resin, 1.5 part of 604 epoxy resin, progressively puts into respectively in the reactor of above-mentioned work in-process A material, fully stirs, at 50 ~ 60 DEG C of temperature, be incubated 3h until 607 epoxy resin and the dissolving of 604 epoxy resin mix, produce work in-process B;
(3) work in-process B is cooled to about 40 ~ 45 DEG C, adds 0.13 part of amine hydroxybenzene, and insulated and stirred 1.5h at this temperature;
(4) finished product is obtained with >=250 mesh filter screens filtrations.
Embodiment 3:
The alcohol soluble self-adhering paint that moisture-resistant is sticky, moiety is as follows by weight: M-and P-cresols 44 parts, dimethylbenzene 35 parts, 9 parts of butanols, 4.4 parts of molten nylon of ES-08 alcohol, 4.4 parts of molten nylon of IC alcohol, 1.8 part of 607 epoxy resin, 1.8 part of 604 epoxy resin, 0.15 part of amine hydroxybenzene.
The preparation method of the alcohol soluble self-adhering paint that described moisture-resistant glues, its step comprises as follows:
(1) by weight, by 44 parts of M-and P-cresols, 35 parts of dimethylbenzene, 9 parts of butanols add in the reactor with agitator and are uniformly mixed, and unlatching is heated to 45 ~ 50 DEG C, progressively add 4.4 parts of molten nylon of ES-08 alcohol, 4.4 parts of molten nylon of IC alcohol, stir simultaneously and be warmed up to 90 ~ 100 DEG C, insulation 3h, until the molten nylon of ES-08 alcohol and the molten nylon of IC alcohol dissolve completely, be then cooled to 50 ~ 60 DEG C, produce work in-process A;
(2) by 1.8 part of 607 epoxy resin, 1.8 part of 604 epoxy resin, progressively puts into respectively in the reactor of above-mentioned work in-process A material, fully stirs, at 50 ~ 60 DEG C of temperature, be incubated 3h until 607 epoxy resin and the dissolving of 604 epoxy resin mix, produce work in-process B;
(3) work in-process B is cooled to about 40 ~ 45 DEG C, adds 0.15 part of amine hydroxybenzene, and insulated and stirred 1.5h at this temperature;
(4) finished product is obtained with >=250 mesh filter screens filtrations.
Comparative example 1:
(1) by weight, by 44 parts of M-and P-cresols, 35 parts of dimethylbenzene, add in the reactor with agitator and are uniformly mixed, and unlatching is heated to 45 ~ 50 DEG C, progressively add 8.8 parts of molten nylon of IC alcohol, stir simultaneously and be warmed up to 90 ~ 100 DEG C, insulation 2.5 ~ 3h, until the molten nylon of IC alcohol dissolves completely, then be cooled to 50 ~ 60 DEG C, produce work in-process A;
(2) by 1.6 part of 601 epoxy resin, 1.6 part of 284 resin (butylated phenolic resin), progressively puts into respectively in the reactor of above-mentioned work in-process A material, fully stirs, at 50 ~ 60 DEG C of temperature, be incubated 2 ~ 3h until dissolving mixes, produce work in-process B;
(3) work in-process B is cooled to about 40 ~ 45 DEG C, adds 0.15 part of amine hydroxybenzene, and insulated and stirred 1.5h at this temperature;
(4) finished product is obtained with >=250 mesh filter screens filtrations.
The self-adhesion paint adopting above method obtained indicates in table 1 through enameled wire test performance.
Table 1
As shown in Table 1, the self-adhesion paint adopting the present invention to make efficiently solves the problem of sticky axle through enameled wire, moisture-resistant glues Be very effective.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (2)

1. the alcohol soluble self-adhering paint that a moisture-resistant is sticky, it is characterized in that: moiety is as follows by weight: M-and P-cresols 35 ~ 44 parts, dimethylbenzene 35 ~ 48 parts, 5 ~ 9 parts of butanols, 4.4 ~ 4.9 parts of molten nylon of ES-08 alcohol, 4.4 ~ 4.9 parts of molten nylon of IC alcohol, 1.2 ~ 1.8 part of 607 epoxy resin, 1.2 ~ 1.8 part of 604 epoxy resin, 0.12 ~ 0.15 part of lubrication prescription, wherein, described lubrication prescription is amine hydroxybenzene.
2. the preparation method of alcohol soluble self-adhering paint that glues of moisture-resistant described in claim 1, is characterized in that: its step is as follows:
(1) by weight, M-and P-cresols 35 ~ 44 parts is taken, dimethylbenzene 35 ~ 48 parts, 5 ~ 9 parts, butanols, drop into and be uniformly mixed with in the reactor of agitator, be heated to 45 ~ 50 DEG C, add 4.4 ~ 4.9 parts of molten nylon of ES-08 alcohol, 4.4 ~ 4.9 parts of molten nylon of IC alcohol, stir and be heated to 90 ~ 100 DEG C, insulation 2.5 ~ 3h, until the molten nylon of ES-08 alcohol and the molten nylon of IC alcohol dissolve completely, then be cooled to 50 ~ 60 DEG C, generate work in-process A;
(2) by 1.2 ~ 1.8 part of 607 epoxy resin, 1.2 ~ 1.8 part of 604 epoxy resin, puts into respectively in the reactor of above-mentioned work in-process A and stirs, and is incubated 2 ~ 3h until 607 epoxy resin and 604 epoxy resin dissolve mixing, generates work in-process B at 50 ~ 60 DEG C of temperature;
(3) work in-process B is cooled to 40 ~ 45 DEG C, adds 0.12 ~ 0.15 part of lubrication prescription, and insulated and stirred 1 ~ 1.5h at this temperature;
(4) finished product step (3) prepared adopts >=250 object filtering nets, after filtration obtained product;
Wherein, the lubrication prescription described in step (3) is amine hydroxybenzene.
CN201310109320.6A 2013-03-29 2013-03-29 Alcohol soluble self-adhering paint that a kind of moisture-resistant is sticky and preparation method thereof Active CN103146299B (en)

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CN103725192A (en) * 2013-11-25 2014-04-16 铜陵天河特种电磁线有限公司 Wire enamel and preparation method thereof
CN103694873A (en) * 2013-11-27 2014-04-02 王传福 Alcohol soluble self-adhesive wire enamel with heat resistant index of 155 DEG C (grade F) and preparation method thereof
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258446A (en) * 1990-06-06 1993-11-02 Seikoh Chemicals Company, Limited Resin composition
CN101343505A (en) * 2008-08-08 2009-01-14 溧阳佳山电子材料有限公司 Preparation method for fire resistant environment-friendly varnished wire hot melt self-adhering paint

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258446A (en) * 1990-06-06 1993-11-02 Seikoh Chemicals Company, Limited Resin composition
CN101343505A (en) * 2008-08-08 2009-01-14 溧阳佳山电子材料有限公司 Preparation method for fire resistant environment-friendly varnished wire hot melt self-adhering paint

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Address after: No. 2 Junrong Road, Daitou Industrial Park, Liyang, Changzhou City, Jiangsu Province, 213311

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