阅读说明：本技术 漆包线脱漆剂及其制备方法 (Enameled wire paint remover and preparation method thereof ) 是由 汪东华 成天忠 霍浩 况金权 于 2020-08-27 设计创作，主要内容包括：本发明涉及脱漆剂领域,公开了一种漆包线脱漆剂及其制备方法。所述漆包线脱漆剂包括如下质量份数的各组分：酮类20份～70份、酰胺类10份～50份、有机碱1份～30份、抑制挥发剂0.1份～10份、缓蚀剂0.1份～8份、助焊剂0.1份～5份、增稠剂0.1份～3份,其中,所述酮类包括N-乙烯基吡咯烷酮、1,1,3-三甲基环己烯酮、4-甲基-3-戊烯-2-酮、甲基异丁基甲酮、苯丙酮和甲基环己酮中的一种或几种。所述漆包线脱漆剂脱漆更加高效彻底；可以有效地避免金属材料腐蚀的问题；并且还可以确保金属材料具有较好的防腐能力和提高焊接牢固度；还不含卤素和重金属,其对人身和环境危害性较小,更加低毒环保；此外,使用方便,加温浸泡即可。普遍适用于漆包线清漆涂层的去除。(The invention relates to the field of paint removers, and discloses an enameled wire paint remover and a preparation method thereof. The enameled wire paint remover comprises the following components in parts by weight: 20-70 parts of ketones, 10-50 parts of amides, 1-30 parts of organic alkali, 0.1-10 parts of a volatile inhibitor, 0.1-8 parts of a corrosion inhibitor, 0.1-5 parts of a soldering flux and 0.1-3 parts of a thickening agent, wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethyl cyclohexenone, 4-methyl-3-pentene-2-ketone, methyl isobutyl ketone, propiophenone and methyl cyclohexanone. The enameled wire paint remover is more efficient and thorough in paint removal; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; the environment-friendly paint also does not contain halogen and heavy metal, has less harm to human bodies and the environment, and is lower in toxicity and more environment-friendly; in addition, the use is convenient, and the product can be soaked in warm water. Is generally applicable to the removal of varnish coatings of enameled wires.)

1. The enameled wire paint remover is characterized by comprising the following components in parts by mass:

20 to 70 parts of ketone, 10 to 50 parts of amide, 1 to 30 parts of organic base, 0.1 to 10 parts of volatile inhibitor, 0.1 to 8 parts of corrosion inhibitor, 0.1 to 5 parts of soldering flux and 0.1 to 3 parts of thickener;

wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methylcyclohexanone.

2. The wire enamel remover according to claim 1, wherein the wire enamel remover comprises the following components in parts by mass: 28 to 68 parts of ketone, 13 to 40 parts of amide, 3 to 25 parts of organic alkali, 0.3 to 8 parts of volatile inhibitor, 0.1 to 6 parts of corrosion inhibitor, 0.1 to 4 parts of soldering flux and 0.1 to 2 parts of thickener.

3. The wire enamel remover according to claim 2, wherein the wire enamel remover comprises the following components in parts by mass: 65 parts of ketones, 30 parts of amides, 3 parts of organic alkali, 1 part of volatile inhibitor, 0.15 part of corrosion inhibitor, 0.1 part of soldering flux and 0.15 part of thickener.

4. The wire enamel remover according to claim 1, wherein the amide comprises one or more of formamide, hydrocinnamamide, N-dimethylformamide and N, N-dimethylacetamide.

5. The wire enamel remover according to claim 1, wherein the organic base comprises one or more of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

6. The wire enamel remover according to claim 1, wherein the volatilization inhibitor comprises one or more of polyethylene glycol, benzyl alcohol and isopropanol.

7. The wire enamel remover according to claim 1, wherein the corrosion inhibitor comprises one or more of MET-Na, TH-551, LAN-826, unirich nox-109 and REOMENT-38.

8. The wire enamel remover according to claim 1, wherein the flux comprises one or more of succinic acid, rosin flux and malic acid.

9. The wire enamel remover according to claim 1, wherein the thickener comprises one or more of polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, and hydroxyethyl cellulose.

10. A preparation method of an enameled wire paint remover is characterized by comprising the following steps:

mixing ketones and amides to obtain a first mixture, wherein the mass ratio of the ketones to the amides is (20-70): (10-50);

and (2) putting an organic base into the first mixture at normal temperature and normal pressure to perform a dissolving operation, so as to obtain a second mixture, wherein the mass ratio of the organic base to the first mixture is (1-30): (30-120);

adding a volatile inhibitor, a corrosion inhibitor, a soldering flux and a thickening agent into the second mixture in sequence, and uniformly stirring to a transparent state to obtain the enameled wire paint remover, wherein the mass ratio of the second mixture to the volatile inhibitor to the corrosion inhibitor to the soldering flux to the thickening agent is (31-150): (0.1-10): (0.1-8): (0.1-5): (0.1 to 3).

Technical Field

The invention relates to the field of paint removers, in particular to an enameled wire paint remover and a preparation method thereof.

Background

The enameled wire is a main variety of winding wires and consists of a conductor and an insulating layer, and a bare wire is annealed and softened and then is subjected to painting and baking for multiple times. The enamel wire is widely used in industry, but problems such as weak welding occur during use because the varnish film on the enamel wire weakens the firmness of the welding portion, and thus it is necessary to depaint the enamel wire at the welding portion before welding. In addition, when recycling the enameled wire, in order to obtain a clean bare wire, it is also necessary to perform a depainting process on the surface of the wire using the enameled wire.

However, many of the prior wire strippers contain halogenated hydrocarbons and even heavy metal components. It is understood that halogen is a strong toxic group, halogenated hydrocarbons are generally more toxic than parent hydrocarbons, and after being absorbed through skin, halogenated hydrocarbons invade nerve centers or act on internal organs to cause poisoning; and has strong volatility and is harmful to the ozone layer. Heavy metals can irreversibly change the structure of proteins, thereby affecting the functions of tissue cells and poisoning people, and most feasibly, once the heavy metals enter rivers and soil, the heavy metals cannot be biodegraded, and if the heavy metals are accumulated in animals and plants and eaten by human beings, the heavy metals can cause heavy metal poisoning. Heavy metals may also accumulate in certain organs of the human body, causing chronic poisoning. Besides the environmental protection problems of harming human bodies and environment, the paint remover has higher corrosivity to the base material while removing the paint, and easily damages the base material to cause resource waste. In addition, many of the existing paint removers have the problems of low paint removing efficiency and incomplete removal.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the enameled wire paint remover which is more efficient, low in toxicity, environment-friendly and more thorough in paint removal, and particularly is more beneficial to welding of enameled wires after paint removal, and the preparation method thereof.

The purpose of the invention is realized by the following technical scheme:

an enameled wire paint remover comprises the following components in parts by mass:

20 to 70 parts of ketone, 10 to 50 parts of amide, 1 to 30 parts of organic base, 0.1 to 10 parts of volatile inhibitor, 0.1 to 8 parts of corrosion inhibitor, 0.1 to 5 parts of soldering flux and 0.1 to 3 parts of thickener;

wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methylcyclohexanone.

In one embodiment, the enameled wire paint remover comprises the following components in parts by mass: 28 to 68 parts of ketone, 13 to 40 parts of amide, 3 to 25 parts of organic alkali, 0.3 to 8 parts of volatile inhibitor, 0.1 to 6 parts of corrosion inhibitor, 0.1 to 4 parts of soldering flux and 0.1 to 2 parts of thickener.

In one embodiment, the enameled wire paint remover comprises the following components in parts by mass: 65 parts of ketones, 30 parts of amides, 3 parts of organic alkali, 1 part of volatile inhibitor, 0.15 part of corrosion inhibitor, 0.1 part of soldering flux and 0.15 part of thickener.

In one embodiment, the amide includes one or more of formamide, hydrocinnamamide, N-dimethylformamide, and N, N-dimethylacetamide.

In one embodiment, the organic base comprises one or more of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

In one embodiment, the propellant suppressant comprises one or more of polyethylene glycol, benzyl alcohol, and isopropyl alcohol.

In one embodiment, the corrosion inhibitor includes one or more of MET-Na, TH-551, LAN-826, UNIRICHNOX-109, and REMOMENT-38.

In one embodiment, the soldering flux includes one or more of succinic acid, rosin soldering flux and malic acid.

In one embodiment, the thickener comprises one or more of polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide and hydroxyethyl cellulose.

A preparation method of an enameled wire paint remover comprises the following steps:

mixing ketones and amides to obtain a first mixture, wherein the mass ratio of the ketones to the amides is (20-70): (10-50);

and (2) putting an organic base into the first mixture at normal temperature and normal pressure to perform a dissolving operation, so as to obtain a second mixture, wherein the mass ratio of the organic base to the first mixture is (1-30): (30-120);

adding a volatile inhibitor, a corrosion inhibitor, a soldering flux and a thickening agent into the second mixture in sequence, and uniformly stirring to a transparent state to obtain the enameled wire paint remover, wherein the mass ratio of the second mixture to the volatile inhibitor to the corrosion inhibitor to the soldering flux to the thickening agent is (31-150): (0.1-10): (0.1-8): (0.1-5): (0.1 to 3).

Compared with the prior art, the invention has at least the following advantages:

the enameled wire paint remover comprises the following components in parts by mass: 20-70 parts of ketones, 10-50 parts of amides, 1-30 parts of organic alkali, 0.1-10 parts of a volatile inhibitor, 0.1-8 parts of a corrosion inhibitor, 0.1-5 parts of a soldering flux and 0.1-3 parts of a thickening agent, wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethyl cyclohexenone, 4-methyl-3-pentene-2-ketone, methyl isobutyl ketone, propiophenone and methyl cyclohexanone. The enameled wire paint remover adopts ketones as a main solvent to replace common halogenated hydrocarbons such as dichloromethane and the like, adopts amides as a cosolvent, adopts organic base as an activating agent, and is assisted by the synergistic cooperation of a volatile agent, a corrosion inhibitor, a soldering flux and a thickening agent, so that the paint removing speed is high, and the paint removing effect is good; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; does not contain halogen and heavy metal, and has less harm to human body and environment. In addition, the paint is convenient to use, can be heated and soaked, and is generally suitable for removing varnish coatings of enameled wires.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a flow chart illustrating the steps of a method for preparing a wire enamel remover according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, the enameled wire paint remover comprises the following components in parts by mass: 20 to 70 parts of ketone, 10 to 50 parts of amide, 1 to 30 parts of organic base, 0.1 to 10 parts of volatile inhibitor, 0.1 to 8 parts of corrosion inhibitor, 0.1 to 5 parts of soldering flux and 0.1 to 3 parts of thickener; wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methylcyclohexanone. The enameled wire paint remover adopts ketones as a main solvent to replace common halogenated hydrocarbons such as dichloromethane and the like, adopts amides as a cosolvent, adopts organic base as an activating agent, and is assisted by the synergistic cooperation of a volatile agent, a corrosion inhibitor, a soldering flux and a thickening agent, so that the paint removing speed is higher and the paint removing effect is better; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; does not contain halogen and heavy metal, and has less harm to human body and environment. In addition, the paint is convenient to use, can be heated and soaked, and is generally suitable for removing varnish coatings of enameled wires.

It should be further noted that ketones have excellent solubility, low toxicity, film forming property, chemical stability and complexing ability, and ketones are used as a main solvent, so that the enameled wire paint remover has better solubility and permeability, can remove a paint film on an enameled wire more quickly and thoroughly, is less toxic and environment-friendly compared with common halogenated hydrocarbons such as dichloromethane, and reduces harm to human bodies and environment. Further, the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methylcyclohexanone. The N-vinyl pyrrolidone is an organic solvent with excellent performance, is low in toxicity and environment-friendly, and can improve the dissolution and permeability of the enameled wire paint remover by adopting the N-vinyl pyrrolidone as a main solvent of the enameled wire paint remover, so that the enameled wire paint remover can be more efficient and thorough in paint film removal on an enameled wire, and in addition, the harm to human bodies and the environment can be reduced. Certainly, in order to improve the paint removing performance of the enamel wire paint remover, one or more of ketones 1,1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methylcyclohexanone are adopted as a compound solvent for compounding, so that the synergistic effect can be achieved, the paint removing speed of the enamel wire paint remover is higher, the effect is better, and the problem of corrosion of metal materials can be effectively avoided; and the halogen and heavy metal are not contained, so that the harm to human bodies and the environment is small, and the toxicity is low and the environment is protected.

In order to further improve the high-efficiency, low-toxicity and environment-friendly performance of the wire enamel remover, for example, in one embodiment, the wire enamel remover comprises the following components in parts by mass: 28 to 68 parts of ketone, 13 to 40 parts of amide, 3 to 25 parts of organic alkali, 0.3 to 8 parts of volatile inhibitor, 0.1 to 6 parts of corrosion inhibitor, 0.1 to 4 parts of soldering flux and 0.1 to 2 parts of thickener. By adjusting the proportion of the components of the enameled wire paint remover, the chemical performance of the enameled wire paint remover can be optimized, so that a better paint removing effect can be achieved, and the comprehensive performance is optimized.

In order to further improve the high-efficiency, low-toxicity and environment-friendly performance of the wire enamel remover, for example, in one embodiment, the wire enamel remover comprises the following components in parts by mass: 65 parts of ketones, 30 parts of amides, 3 parts of organic alkali, 1 part of volatile inhibitor, 0.15 part of corrosion inhibitor, 0.1 part of soldering flux and 0.15 part of thickener. Therefore, the chemical performance of the enameled wire paint remover can be optimized by adjusting the component proportion of the enameled wire paint remover, so that a better paint removing effect can be achieved, and the comprehensive performance is optimized.

It should be noted that, the dissolution and penetration force of many existing enamel wire strippers is not strong enough, which easily causes the paint film on the enamel wire to remain after soaking and stripping, and thus is not beneficial to recycling or welding the enamel wire, so it is necessary to further improve the dissolution and penetration performance of the enamel wire stripper, for example, by using amides as a cosolvent, the penetration and solubility of the enamel wire stripper to the enamel wire can be greatly improved, so that the enamel wire stripper can more efficiently and thoroughly remove the paint film on the enamel wire. For example, in one embodiment, the amide includes one or more of formamide, hydrocinnamamide, N-dimethylformamide, and N, N-dimethylacetamide. Therefore, by adopting the ketone as the cosolvent and the amide as the cosolvent, the dissolving effect which is twice the result with half the effort can be achieved, the dissolving permeability of the enameled wire paint remover is enhanced, and the paint film on the enameled wire is rapidly and thoroughly removed. For another example, the amide is formamide, so that the formamide has active reactivity and special dissolving capacity, is an excellent organic solvent and an eluent, can reduce the preparation cost and improve the dissolving capacity of the enameled wire paint remover by adopting the formamide as a cosolvent of the enameled wire paint remover, so that the paint remover has higher paint removing speed and better effect; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; and the halogen and heavy metal are not contained, so that the harm to human bodies and environment is small. For another example, the amide is N, N-dimethylacetamide, and it can be understood that N, N-dimethylacetamide can be optionally mixed with organic solvents such as water, alcohol, ether, ester, benzene, chloroform, aromatic compounds, and the like, and can be used as an electrolytic solvent, a paint scavenger, and the like. For another example, the amide compound comprises a mixture of formamide, phenylacrylamide, N-dimethylformamide and N, N-dimethylacetamide, wherein the mass ratio of the formamide to the phenylacrylamide to the N, N-dimethylformamide to the N, N-dimethylacetamide is (3-20): (2-15): (4-10): (1-7), so that the dissolving assisting effect can be improved by adopting the compound amides with a specific ratio, and the dissolving capacity of the enameled wire paint remover can be improved, so that the paint removing speed is higher and the paint removing effect is better; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; and the halogen and heavy metal are not contained, so that the harm to human bodies and environment is small.

In order to further improve the paint removing capacity of the enameled wire paint remover, the enameled wire paint remover also adopts organic base as an activating agent, and the activating agent can improve the penetration of the enameled wire paint remover into a paint film, destroy the adhesive force between the paint film and a matrix, swell and fall the paint film, accelerate the damage of a macromolecular chain segment of the paint film, enhance the diffusion rate of the paint remover in the paint film, and improve the penetration, swelling and wrinkling capacity of the paint film. For example, in one embodiment, the organic base comprises one or more of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylenetetramine, and tetraethylenepentamine. Therefore, the paint removing efficiency of the enameled wire paint remover can be improved, the paint removing effect can be improved, and the enameled wire paint remover is beneficial to recycling, welding and other operations of the enameled wire. As another example, the organic base is triethanolamine; for another example, the organic base is a mixture of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylene tetramine and tetraethylenepentamine, wherein the mass ratio of the triethanolamine, the dimethylethanolamine, the diethylenetriamine, the triethylene tetramine and the tetraethylenepentamine is (0.2-10): (0.1-7): (0.2-8): (0.1-4): (0.4-5), so, the organic base obtained by compounding the organic bases according to a specific ratio is used as an activating agent, the dissolution and permeability of the enameled wire paint remover are further improved, the paint removing performance of the enameled wire paint remover can be improved, and the recycling and welding of the enameled wire are facilitated.

In order to reduce the harm of the enameled wire paint remover to human bodies and environment, prevent the volatilization of a main solvent, a cosolvent and an organic base, ensure that molecules of the main solvent penetrate into a paint film as much as possible, reduce the volatilization of the main solvent, prolong the effective action time of the paint film and improve the paint removing efficiency, for example, in one embodiment, the volatilization inhibiting agent comprises one or more of polyethylene glycol, benzyl alcohol and isopropanol. So, can avoid at the depainting in-process, volatile substances diffuses, improves the safety in utilization, alleviates enameled wire depainting agent is to human and environmental hazard nature. As another example, in one embodiment, the propellant-inhibiting agent is polyethylene glycol, benzyl alcohol, or isopropyl alcohol, and in another embodiment, the propellant-inhibiting agent is a mixture of polyethylene glycol, benzyl alcohol, and isopropyl alcohol. Therefore, the enameled wire paint remover does not contain halogen and heavy metal by adding the volatile inhibiting agent into the enameled wire paint remover, has small harm to human bodies and environment, and can be generally suitable for removing the varnish coating of the enameled wire.

In order to avoid excessive corrosion of the metal material inside the enameled wire during the depainting process, the metal material is ensured to have better corrosion resistance and welding firmness, for example, in one embodiment, the corrosion inhibitor comprises one or more of MET-Na, TH-551, LAN-826, UNIRICHNOX-109 and REMOMENT-38. Therefore, the enameled wire paint remover can avoid corrosion to the metal base material of the enameled wire, and can form a protective film on the surface of the metal base material to protect the surface of the metal base material from being corroded by the paint remover and harmful media in the atmosphere, so that the metal base material keeps the original bright and bright color, the corrosion and color change of the surface of the base material are prevented, the metal base material after paint removal has no corrosion traces, color change and other defects, the quality of repeated paint removal and recoating of the metal base material can be ensured, the generation of defective products is reduced, meanwhile, the protective film can effectively increase the antirust performance of the metal base material, the adhesive force of subsequent painting of the metal base material can be improved, and the enameled wire paint remover is more favorable for welding and other. For example, in one embodiment, the corrosion inhibitor is MET-Na, and it should be noted that MET-Na is abbreviated as sodium mercaptobenzothiazole, and is a corrosion inhibitor with excellent performance, which can avoid the problem of over corrosion of the enamel wire caused by the enamel wire stripper. As another example, the corrosion inhibitor is TH-551, and it can be understood that TH-551 is a benzotriazole derivative, and the manufacturer is American RT company, and it forms an inert chelate protective film on the metal surface by coordination bond, thereby reducing the potential sites on the metal surface, playing a role in passivating the catalytic activity of the metal, and having an excellent inhibiting effect on copper corrosion. For another example, the corrosion inhibitor is LAN-826, and it can be understood that LAN-826 is a general corrosion inhibitor with excellent performance, and the manufacturer is daan chemical engineering ltd, langzhou, and can avoid the problem that the enamel remover causes over corrosion to the metal material inside the enameled wire during the enamel removing process, so as to ensure that the metal material has better corrosion resistance and improve welding firmness. For another example, the corrosion inhibitor is UNIRICHNOX-109, and it can be understood that UNIRICHNOX-109 is a metal deactivator produced by RT corporation in America, and can avoid the problem that the enamel wire enamel remover causes over-corrosion to the metal material in the enamel wire enamel removing process, so as to ensure that the metal material has better corrosion resistance and improve the welding firmness. As another example, the corrosion inhibitor is typically REMOMENT-38, and it is understood that the manufacturer of REMOMENT-38 is CIBAGEIGY, Switzerland, which is capable of forming an inert protective film on a metal surface or forming a chelate with a metal ion, thereby inhibiting the catalytic action of the metal or its ion on the oxidation of the metal substrate.

In order to improve the paint stripping capability of the wire enamel remover and ensure that the metal material of the enameled wire after being stripped has better corrosion resistance and improved welding firmness, for example, in one embodiment, the soldering flux comprises one or more of succinic acid, rosin soldering flux and malic acid. So, be favorable to the enameled wire after carrying out the depainting, welding that can be better just more firm. In another example, the soldering flux is succinic acid, rosin soldering flux or malic acid; for another example, the rosin flux may include one or more of an inactive rosin flux (R), a weakly active rosin flux (RMA), an active rosin flux (RA), and a super active rosin flux (RSA). Therefore, the enameled wire paint remover can improve the welding firmness of the enameled wire while improving the paint removing efficiency.

In order to improve the adhesion of the wire enamel remover to the metallic material of the enameled wire and improve the viscosity, a thickening agent is also used in the preparation of the wire enamel remover, for example, in one embodiment, the thickening agent comprises one or more of polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, and hydroxyethyl cellulose. Therefore, the viscosity of the enameled wire paint remover can be increased, and the dissolving agent can better permeate into the enameled wire for paint removal. For another example, in one embodiment, the thickening agent is polyacrylamide, and for another example, in one embodiment, the thickening agent is a mixture of polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide and hydroxyethyl cellulose, and by compounding the thickening agents, the thickening effect on the enamel wire enamel remover can be better, and the enamel removing performance of the enamel wire enamel remover can be further improved.

In one embodiment, referring to fig. 1, a method for preparing an enameled wire paint remover includes the following steps:

s110, mixing ketones and amides to obtain a first mixture, wherein the mass ratio of the ketones to the amides is (20-70): (10-50).

By mixing ketones and amides, a proper amount of pure water can be added, and after the pure water is fully dissolved and uniformly stirred, a first mixture can be obtained, which is convenient for subsequent preparation of the enameled wire paint remover, wherein the mass ratio of the ketones to the amides is (20-70): (10-50), it can be understood that the same materials are prepared in different proportions, and the performance of the obtained mixture may be different from the nature, in this embodiment, by controlling the specific proportion of the ketone and the amide, the ketone and the amide can have a better synergistic effect, and the preparation of the enameled wire paint remover with better paint removing performance is facilitated. Specifically, the enamel wire enamel remover of the embodiment selects ketones as a main solvent to replace common halogenated hydrocarbons such as dichloromethane and the like, takes amides as a cosolvent, does not contain halogen and heavy metal, has small harm to human bodies and environment, and has higher enamel removing speed and better effect; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness. In order to make the wire enamel remover have better dissolution property and permeability, the paint film on the enameled wire can be removed more quickly and thoroughly, for example, in one embodiment, the ketone comprises one or more of N-vinyl pyrrolidone, 1, 3-trimethylcyclohexenone, 4-methyl-3-penten-2-one, methyl isobutyl ketone, propiophenone and methyl cyclohexanone; therefore, the ketone is used as the main solvent of the enameled wire paint remover, so that the dissolution and permeability of the enameled wire paint remover can be improved, the enameled wire paint remover can be more efficient and thorough in paint film removal on an enameled wire, and in addition, the harm to human bodies and the environment can be reduced. In order to further improve the dissolution and permeability of the enamel wire enamel remover, for example, by using amides as a cosolvent, the penetration and solubility of the enamel wire enamel remover to the enamel wire can be greatly improved, so that the enamel film on the enamel wire can be more efficiently and thoroughly removed by the enamel remover. For example, in one embodiment, the amide includes one or more of formamide, hydrocinnamamide, N-dimethylformamide, and N, N-dimethylacetamide. Therefore, by adopting the ketone as the cosolvent and the amide as the cosolvent, the dissolving effect which is twice the result with half the effort can be achieved, the dissolving permeability of the enameled wire paint remover is enhanced, and the paint film on the enameled wire is rapidly and thoroughly removed.

S120, putting an organic base into the first mixture at normal temperature and normal pressure to perform dissolving operation, and obtaining a second mixture, wherein the mass ratio of the organic base to the first mixture is (1-30): (30-120).

The organic base is used as an activating agent, so that the enameled wire paint remover can penetrate into a paint film, the adhesive force between the paint film and a matrix is damaged, the paint film swells and falls off, the damage to a paint film macromolecular chain segment can be accelerated, the diffusion rate of the paint remover in the paint film is enhanced, and the penetrating, swelling and wrinkling capabilities of the paint film are improved. In order to further improve the paint stripping capability of the wire enamel remover, for example, in one embodiment, the organic base comprises one or more of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine. Therefore, the paint removing efficiency of the enameled wire paint remover can be improved, the paint removing effect can be improved, and the enameled wire paint remover is beneficial to recycling, welding and other operations of the enameled wire. As another example, the organic base is triethanolamine; for another example, the organic base is a mixture of triethanolamine, dimethylethanolamine, diethylenetriamine, triethylene tetramine and tetraethylenepentamine, wherein the mass ratio of the triethanolamine, the dimethylethanolamine, the diethylenetriamine, the triethylene tetramine and the tetraethylenepentamine is (0.2-10): (0.1-7): (0.2-8): (0.1-4): (0.4-5), so, the organic base obtained by compounding the organic bases according to a specific ratio is used as an activating agent, the dissolution and permeability of the enameled wire paint remover are further improved, the paint removing performance of the enameled wire paint remover can be improved, and the recycling and welding of the enameled wire are facilitated.

S130, adding a volatile inhibitor, a corrosion inhibitor, a soldering flux and a thickening agent into the second mixture in sequence, and uniformly stirring to a transparent state to obtain the enameled wire paint remover, wherein the mass ratio of the second mixture to the volatile inhibitor to the corrosion inhibitor to the soldering flux to the thickening agent is (31-150): (0.1-10): (0.1-8): (0.1-5): (0.1 to 3).

Through to add suppression volatile agent, corrosion inhibitor, scaling powder and thickener in proper order in the second mixture, stirring to transparent state, can obtain the enameled wire depainting agent, it needs to explain that, this embodiment the enameled wire depainting agent can make through assisting in suppression volatile agent, corrosion inhibitor, scaling powder and thickener cooperateing, the depainting performance of enameled wire depainting agent is more excellent, and low toxicity environmental protection more, can also play the problem of preventing the excessive corrosion of enameled wire after the depainting, especially can also improve the welding performance of metal material in the enameled wire after the depainting. It should be noted that, in order to reduce the harm of the enamel wire stripper to human body and environment, prevent the volatilization of the main solvent, the cosolvent and the organic base, make the molecules of the main solvent penetrate into the paint film as much as possible, reduce the volatilization of the main solvent, prolong the effective action time of the main solvent and improve the stripping efficiency, for example, in one embodiment, the volatilization inhibiting agent comprises one or more of polyethylene glycol, benzyl alcohol and isopropanol. So, can avoid at the depainting in-process, volatile substances diffuses, improves the safety in utilization, alleviates enameled wire depainting agent is to human and environmental hazard nature. As another example, to avoid excessive corrosion of the metallic material inside the enameled wire during the depainting process, the metallic material is ensured to have better corrosion resistance and improved weld integrity, for example, in one embodiment, the corrosion inhibitor includes one or more of MET-Na, TH-551, LAN-826, UNIRICHNOX-109 and REMENT-38. Therefore, the enameled wire paint remover can avoid corrosion to the metal base material of the enameled wire, can improve the adhesive force of subsequent painting of the metal base material, and is more beneficial to welding and other operations. Further, in order to improve the paint removing capability of the wire enamel remover and ensure that the metal material of the enameled wire after paint removing has better corrosion resistance and improved welding firmness, for example, in one embodiment, the soldering flux comprises one or more of succinic acid, rosin soldering flux and malic acid. So, be favorable to the enameled wire after carrying out the depainting, welding that can be better just more firm. Furthermore, in order to improve the adhesion of the wire enamel remover to the metallic material of the enamel wire and increase the viscosity, a thickener is also used in the preparation of the wire enamel remover, for example, in one embodiment, the thickener includes one or more of polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, and hydroxyethyl cellulose. Therefore, the viscosity of the enameled wire paint remover can be increased, and the dissolving agent can better permeate into the enameled wire for paint removal. In addition, the mass ratio of the second mixture, the suppression volatile agent, the corrosion inhibitor, the soldering flux and the thickening agent is (31-150): (0.1-10): (0.1-8): (0.1-5): (0.1-3), so, through controlling the specific ratio of each component, can play better cooperative function, and then improve the paint removing performance, the low-toxicity environmental protection performance and the welding firmness of the enameled wire paint remover.

In addition, in one embodiment, the temperature is controlled to be 110 ℃ to 150 ℃, the enameled wire needing depainting is soaked in the enameled wire depainting agent for 30S to 120S, and depainting operation is carried out, so that a paint film on the enameled wire is dissolved and peeled off.

Compared with the prior art, the invention has at least the following advantages:

the enameled wire paint remover comprises the following components in parts by mass: 20-70 parts of ketones, 10-50 parts of amides, 1-30 parts of organic alkali, 0.1-10 parts of a volatile inhibitor, 0.1-8 parts of a corrosion inhibitor, 0.1-5 parts of a soldering flux and 0.1-3 parts of a thickening agent, wherein the ketones comprise one or more of N-vinyl pyrrolidone, 1, 3-trimethyl cyclohexenone, 4-methyl-3-pentene-2-ketone, methyl isobutyl ketone, propiophenone and methyl cyclohexanone. The enameled wire paint remover adopts ketones as a main solvent to replace common halogenated hydrocarbons such as dichloromethane and the like, adopts amides as a cosolvent, adopts organic base as an activating agent, and is assisted by the synergistic cooperation of a volatile agent, a corrosion inhibitor, a soldering flux and a thickening agent, so that the paint removing speed is high, and the paint removing effect is good; the problem of corrosion of metal materials can be effectively avoided; and can also ensure that the metal material has better corrosion resistance and improve the welding firmness; does not contain halogen and heavy metal, and has less harm to human body and environment. In addition, the paint is convenient to use, can be heated and soaked, and is generally suitable for removing varnish coatings of enameled wires.

The following is a detailed description of the embodiments.