CN104672980A - Enamelled wire paint remover - Google Patents
Enamelled wire paint remover Download PDFInfo
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- CN104672980A CN104672980A CN201510075010.6A CN201510075010A CN104672980A CN 104672980 A CN104672980 A CN 104672980A CN 201510075010 A CN201510075010 A CN 201510075010A CN 104672980 A CN104672980 A CN 104672980A
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- inorganic salt
- organic solvent
- polar organic
- enameled wire
- chloride
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses an enamelled wire paint remover, and particularly relates to a paint remover capable of removing a variety of enamelled wire paint films and a preparation method thereof. The enamelled wire paint remover is composed of the following component in percentages by weight: 90-99.9% of polar organic solvent and 0.1-10% of inorganic salt, wherein the dielectric constant of the polar organic solvent is 30-50, and the inorganic salt is an alkali metal or an alkali earth metal salt. The preparation method of the enamelled wire paint remover disclosed by the invention comprises the following steps: adding the polar organic solvent and the inorganic salt into a container in a certain proportion, and stirring uniformly at a certain temperature. The paint remover disclosed by the invention can be used for effectively removing a variety of enamelled wire paint films. The enamelled wire paint remover disclosed by the invention is used for removing paint from enamelled wires, and has the characteristics of convenience in operation, wide application range, high paint removal speed, good effect, high efficiency, non corrosion on metal substrates, and the like.
Description
Technical field
The invention belongs to paint remover technical field, be specifically related to a kind ofly multiple enameled wire coat is had to paint remover of removal effect and preparation method thereof.
Background technology
Enameled wire is a kind of conventional industrial consumptive material, and the matrix copper cash in enamel covered wire is anaerobic or low-oxygen copper pole, and copper content, more than 95%, is the copper scrap resource of high-quality, and suitable Direct Regeneration utilizes, and before recycling needs the paint on enameled wire to remove to copper scrap.In addition, when welding in order to by enameled wire firm welding, also need the paint of enameled wire weld to remove totally more.At present, combustion method or mechanical process is mainly adopted to carry out depainting to enameled wire on the market.Adopt combustion method depainting, not only contaminate environment, gives off environmentally harmful waste, and can produce serious influence to needing the copper material quality reclaimed, and is also unfavorable for the recycling of top coat in addition.Adopt mechanical process depainting to have complex operation, waste time and energy, the shortcomings such as paint removal efficiency is low.
In recent years, disclose the composition of some paint removers, as patent of invention ZL200910155396.6 discloses a kind of enameled wire varnish remover, this paint remover has each component of following weight part to be prepared from: methylene dichloride 835 ~ 865 parts, methyl alcohol 77 ~ 83 parts, 6.7 ~ 7.3 parts, synthetic glass bits, 17 ~ 23 parts, nitric acid, whiteruss 4.5 ~ 6.5 parts, X 2-1401 37 ~ 43 parts.Paint remover disclosed in patent of invention ZL200510105928.7, relates to the organic solvent that the volatility such as methylene dichloride are large.Patent of invention ZL03140354.9 discloses a kind of paint remover for polyester, polyesterimide enameled copper round wire paint film, comprise formic acid, trichloromethane, cresols, additive, each component concentration per-cent is as follows: formic acid: 30%-50%, trichloromethane: 30%-40%, cresols: 5%-35%, additive: 0%-5%.
Existing patented technology and commercially available many different sorts chemical strippers, also exist depainting limitednumber, paint stripping rate be slow, efficiency is low, paint remover volatility is large, to limitation such as base material corrosion are large.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of easy to operate, applied widely, paint stripping rate is fast, effective, efficiency is high, volatility is little, to the incorrosive enameled wire varnish remover of metal base.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of enameled wire varnish remover, and the component of this enameled wire varnish remover is (weight percent):
Polar organic solvent: 90% ~ 99.9%, the specific inductivity 30 ~ 50 of described polar organic solvent;
Inorganic salt: 0.1% ~ 10%, described inorganic salt are basic metal or alkaline earth salt.
Polar organic solvent and inorganic salt reaction form complex compound, improve the polarity of organic solvent, promote the solvation of polar organic solvent, and then improve the depainting ability of solvent.
Enameled wire varnish remover of the present invention, is preferably prepared from (weight percent) by following component:
Polar organic solvent: 95%-99%; Described polar organic solvent comprises DMF (DMF), N,N-dimethylacetamide (DMAc), N-Methyl pyrrolidone (NMP), dimethyl sulfoxide (DMSO) (DMSO) etc.
Inorganic salt: 1%-5%, inorganic salt comprise lithium chloride (LiCl), magnesium chloride (MgCl
2), calcium chloride (CaCl
2) etc.
The enameled wire varnish remover paint removing effect adopting the polar organic solvent of aforementioned proportion and inorganic salt to be mixed to form is good, depainting scope is wide, multiple enameled wire coat can be removed, the enameled wire coats such as urethane, polyester, polyester-imide can be removed, the composite paint film of polyamidoimide and polyester, polyester-imide etc. can also be removed.
Preferably, described enameled wire varnish remover is prepared from (weight percent) by following component:
DMF (specific inductivity 36.7): 90% ~ 99.9%;
At least one in calcium chloride, magnesium chloride, lithium chloride: 0.1% ~ 10%.
Adopt DMF to mix with at least one in calcium chloride, magnesium chloride, lithium chloride and form paint remover, paint stripping rate is fast, can remove various enameled wire coat, especially can remove polyester paint film within half hour in 2 hours.
Preferably, described enameled wire varnish remover is prepared from (weight percent) by following component:
N-Methyl pyrrolidone (specific inductivity 32.2)+dimethyl sulfoxide (DMSO) (specific inductivity 48.9): 90% ~ 99.9%; Wherein: the weight ratio of N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO) is 1:9 ~ 9:1.
Lithium chloride+calcium chloride: 0.1% ~ 10%.The weight ratio of lithium chloride and calcium chloride is 1:9 ~ 9:1.
Adopt the enameled wire varnish remover of this preferred version, the composite paint film of energy effective elimination polyamidoimide and polyester.
Preferably, enameled wire varnish remover is prepared from (weight percent) by following component:
DMF (specific inductivity 36.7)+N,N-dimethylacetamide (specific inductivity 37.8): 90% ~ 99.9%; Wherein: the weight ratio of DMF and N,N-dimethylacetamide is 1:9 ~ 9:1.
Lithium chloride+magnesium chloride: 0.1% ~ 10%, wherein: the weight ratio of lithium chloride and magnesium chloride is 1:9 ~ 9:1.
Adopt the enameled wire varnish remover of this preferred version, the composite paint film of energy effective elimination polyamidoimide and polyester-imide.
The preparation method of enameled wire varnish remover of the present invention: join in container by each component in proportion, stirs, until inorganic salt dissolve completely at room temperature ~ 120 DEG C.
When paint remover of the present invention uses, enameled wire is cut into segment (1 ~ 2cm), immerses in enameled wire varnish remover of the present invention, at room temperature ~ 100 DEG C, stir certain hour, the paint on enameled wire will come off.
Advantage of the present invention and beneficial effect: 1) paint stripping rate is fast, can remove various enameled wire coat in 2 hours; 2) paint removal efficiency is high, and depainting area reaches more than 95%; 3) applied widely, not only can remove the enameled wire coats such as urethane, polyester, polyester-imide, the composite paint film of polyamidoimide and polyester, polyester-imide etc. can also be removed; 4) can remove for multiple wire enamel simultaneously, more be conducive to suitability for industrialized production; 5) paint remover preparation and use working method easy, paint remover can repeated multiple timesly use.
Embodiment
The present invention is described in detail below by specific embodiment.
Embodiment 1:
Measure DMF (DMF), specific inductivity 36.7,40mL (heavy 37.92g), takes calcium chloride (CaCl
2) 0.58g, join in round-bottomed flask, oil bath room temperature lower magnetic force stirs, and calcium chloride is dissolved in DMF completely, obtains depainting solution.
Added by the polyester enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 73 minutes, polyester enamel covered wire surface paint film removes completely.
Add in above-mentioned depainting solution by the polyester and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 60 minutes, polyester and polyamidoimide composite paint film enamel covered wire surface paint film remove completely.
After depainting, after copper rod and paint film being filtered, paint remover reusable edible, paint removing effect is substantially constant.
Embodiment 2
Measure N,N-dimethylacetamide (DMAc), specific inductivity 37.8,40mL (heavy 37.48g), takes magnesium chloride (MgCl
2) 4.16g, join in round-bottomed flask, oil bath 120 DEG C of lower magnetic forces stir, and magnesium chloride is dissolved in N,N-dimethylacetamide completely, obtains depainting solution.
Added by the polyester-imide enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 45 minutes, polyester-imide enamel covered wire surface paint film removes completely.
Add in above-mentioned depainting solution by the polyester-imide and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 110 minutes, polyester-imide and polyamidoimide composite paint film enamel covered wire surface paint film remove completely.After depainting, after copper rod and paint film being filtered, paint remover reusable edible, paint removing effect is substantially constant.
Embodiment 3:
Measure N, dinethylformamide (DMF), specific inductivity 36.7,40mL (heavy 37.92g), takes lithium chloride (LiCl) 0.038g, joins in round-bottomed flask, oil bath room temperature lower magnetic force stirs, lithium chloride is dissolved in DMF completely, obtains depainting solution.Added by the polyester enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 100 minutes, polyester enamel covered wire surface paint film removes completely.
Comparative example 3:
Measure DMF (DMF), specific inductivity 36.7,40mL (heavy 37.92g), join in round-bottomed flask, room temperature lower magnetic force stirs with embodiment 3 grade long-time.Added by the polyester enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 300 minutes, polyester enamel covered wire surface paint film still has residual.
When other experiment conditions are consistent, adding by inorganic salt, the depainting time obviously shortens.
Embodiment 4:
Measure N, N-N,N-DIMETHYLACETAMIDE (DMAc), specific inductivity 37.8,40mL (heavy 37.48g), takes lithium chloride (LiCl) 0.038g, joins in round-bottomed flask, oil bath room temperature lower magnetic force stirs, lithium chloride is dissolved in N,N-dimethylacetamide completely, obtains depainting solution.Added by the polyester enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 60 minutes, polyester enamel covered wire surface paint film removes completely.
Comparative example 4:
Measure N,N-dimethylacetamide (DMAc), specific inductivity 37.8,40mL (heavy 37.48g), join in round-bottomed flask, room temperature lower magnetic force stirs with embodiment 4 grade long-time.Added by the polyester enamel covered wire being cut into 1 ~ 2 centimetre in above-mentioned depainting solution, oil bath 60 DEG C of lower magnetic forces stir.After 300 minutes, polyester enamel covered wire surface paint film still has residual.
When other experiment conditions are consistent, adding by inorganic salt, the depainting time obviously shortens.
Embodiment 5
Measure N-Methyl pyrrolidone (NMP), specific inductivity 32.2,20mL (20.56g), dimethyl sulfoxide (DMSO) (DMSO), specific inductivity 48.9,20mL (22g), takes lithium chloride (LiCl) 1.0g, calcium chloride (CaCl
2) 1.24g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, calcium chloride are dissolved in N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO) mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 33 minutes, polyester and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
Embodiment 6
Measure N-Methyl pyrrolidone (NMP), specific inductivity 32.2,4.3mL (4.42g), dimethyl sulfoxide (DMSO) (DMSO), specific inductivity 48.9,35.7mL (39.27g), takes lithium chloride (LiCl) 0.25g, calcium chloride (CaCl
2) 2.25g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, calcium chloride are dissolved in N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO) mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 38 minutes, polyester and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
Embodiment 7
Measure N-Methyl pyrrolidone (NMP), specific inductivity 32.2,36.2mL (37.21g), dimethyl sulfoxide (DMSO) (DMSO), specific inductivity 48.9,3.8mL (4.18g), takes lithium chloride (LiCl) 2.25g, calcium chloride (CaCl
2) 0.25g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, calcium chloride are dissolved in N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO) mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 31 minutes, polyester and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
Embodiment 8
Measure N, dinethylformamide (DMF), specific inductivity 36.7,20mL (18.89g), N, N-N,N-DIMETHYLACETAMIDE (DMAc), specific inductivity 37.8,20mL (18.73g), takes lithium chloride (LiCl) 1.0g, magnesium chloride (MgCl
2) 1.12g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, magnesium chloride are dissolved in DMF and N,N-dimethylacetamide mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester-imide and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 43 minutes, polyester-imide and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
Embodiment 9
Measure N, dinethylformamide (DMF), specific inductivity 36.7,4mL (3.78g), N, N-N,N-DIMETHYLACETAMIDE (DMAc), specific inductivity 37.8,36mL (33.71g), takes lithium chloride (LiCl) 0.2g, magnesium chloride (MgCl
2) 1.8g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, magnesium chloride are dissolved in DMF and N,N-dimethylacetamide mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester-imide and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 50 minutes, polyester-imide and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
Embodiment 10
Measure N, dinethylformamide (DMF), specific inductivity 36.7,35.9mL (33.91g), N, N-N,N-DIMETHYLACETAMIDE (DMAc), specific inductivity 37.8,4.1mL (3.84g), takes lithium chloride (LiCl) 1.8g, magnesium chloride (MgCl
2) 0.2g, join in round-bottomed flask, oil bath 60 DEG C of lower magnetic forces stir, and lithium chloride, magnesium chloride are dissolved in DMF and N,N-dimethylacetamide mixed solvent completely, obtain depainting solution.Add in above-mentioned depainting solution by the polyester-imide and polyamidoimide composite paint film enamel covered wire that are cut into 1 ~ 2 centimetre, oil bath 60 DEG C of lower magnetic forces stir.After 38 minutes, polyester-imide and polyamidoimide composite paint film enamel covered wire surface paint film are removed.
The present invention can summarize with other the specific form without prejudice to spirit of the present invention and principal character.Therefore, no matter from which point, above-mentioned experimental program of the present invention all can only be thought explanation of the present invention and can not limit the present invention, claim indicates scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (8)
1. an enameled wire varnish remover, is characterized in that, consisting of of percentage:
Polar organic solvent: 90% ~ 99.9%, the specific inductivity 30 ~ 50 of described polar organic solvent;
Inorganic salt: 0.1% ~ 10%, described inorganic salt are basic metal or alkaline earth salt.
2. enameled wire varnish remover according to claim 1, is characterized in that, consisting of of percentage:
Polar organic solvent: 95%-99%;
Inorganic salt: 1%-5%.
3. enameled wire varnish remover according to claim 1 and 2, is characterized in that,
Described polar organic solvent is at least one in DMF, N,N-dimethylacetamide, N-Methyl pyrrolidone, dimethyl sulfoxide (DMSO); Described inorganic salt are at least one in lithium chloride, magnesium chloride, calcium chloride.
4. enameled wire varnish remover according to claim 3, is characterized in that,
Described polar organic solvent is DMF;
Described inorganic salt are at least one in calcium chloride, magnesium chloride, lithium chloride.
5. enameled wire varnish remover according to claim 3, is characterized in that,
Described polar organic solvent is DMF;
Described inorganic salt are the mixture of calcium chloride and magnesium chloride, and wherein the weight ratio of calcium chloride and magnesium chloride is 1:9 ~ 9:1.
6. enameled wire varnish remover according to claim 3, is characterized in that,
Described polar organic solvent is the mixture of N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO), wherein: the weight ratio of N-Methyl pyrrolidone and dimethyl sulfoxide (DMSO) is 1:9 ~ 9:1;
Described inorganic salt are the mixture of lithium chloride and calcium chloride, and wherein the weight ratio of lithium chloride and calcium chloride is 1:9 ~ 9:1.
7. enameled wire varnish remover according to claim 3, is characterized in that,
Described polar organic solvent is the mixture of DMF and N,N-dimethylacetamide, and wherein the weight ratio of DMF and N,N-dimethylacetamide is 1:9 ~ 9:1;
Described inorganic salt are the mixture of lithium chloride and magnesium chloride, and wherein the weight ratio of lithium chloride and magnesium chloride is 1:9 ~ 9:1.
8. the preparation method of enameled wire varnish remover according to claim 1, is characterized in that, joins in container in proportion by polar organic solvent and inorganic salt, stirs, until inorganic salt dissolve completely at room temperature ~ 120 DEG C.
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| CN201510075010.6A CN104672980B (en) | 2015-02-12 | 2015-02-12 | A kind of enameled wire varnish remover |
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| CN201510075010.6A CN104672980B (en) | 2015-02-12 | 2015-02-12 | A kind of enameled wire varnish remover |
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| CN104672980A true CN104672980A (en) | 2015-06-03 |
| CN104672980B CN104672980B (en) | 2016-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183369A (en) * | 2019-05-23 | 2019-08-30 | 安徽京控环境技术服务有限公司 | A method of the separating-purifying N-Methyl pyrrolidone from useless paint stripper |
| CN111876011A (en) * | 2020-07-07 | 2020-11-03 | 中华制漆(新丰）有限公司 | Paint removing composition and preparation method thereof |
| CN115301952A (en) * | 2022-07-19 | 2022-11-08 | 珠海格力绿色再生资源有限公司 | Method for recovering copper material from enameled wire |
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| CN1035524A (en) * | 1988-02-29 | 1989-09-13 | 于国胜 | Low-poison paint stripper and method for making thereof |
| JPH05171076A (en) * | 1991-12-25 | 1993-07-09 | Neos Co Ltd | Paint remover |
| CN101412863A (en) * | 2007-10-16 | 2009-04-22 | 西安工业大学 | Low-volatile low-toxic paint remover |
| CN104231713A (en) * | 2013-06-17 | 2014-12-24 | 西门子数控（南京）有限公司 | Paint remover and paint removing method thereof |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035524A (en) * | 1988-02-29 | 1989-09-13 | 于国胜 | Low-poison paint stripper and method for making thereof |
| JPH05171076A (en) * | 1991-12-25 | 1993-07-09 | Neos Co Ltd | Paint remover |
| CN101412863A (en) * | 2007-10-16 | 2009-04-22 | 西安工业大学 | Low-volatile low-toxic paint remover |
| CN104231713A (en) * | 2013-06-17 | 2014-12-24 | 西门子数控（南京）有限公司 | Paint remover and paint removing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183369A (en) * | 2019-05-23 | 2019-08-30 | 安徽京控环境技术服务有限公司 | A method of the separating-purifying N-Methyl pyrrolidone from useless paint stripper |
| CN111876011A (en) * | 2020-07-07 | 2020-11-03 | 中华制漆(新丰）有限公司 | Paint removing composition and preparation method thereof |
| CN115301952A (en) * | 2022-07-19 | 2022-11-08 | 珠海格力绿色再生资源有限公司 | Method for recovering copper material from enameled wire |
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| CN104672980B (en) | 2016-09-28 |
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