CN104672980B - A kind of enameled wire varnish remover - Google Patents
A kind of enameled wire varnish remover Download PDFInfo
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- CN104672980B CN104672980B CN201510075010.6A CN201510075010A CN104672980B CN 104672980 B CN104672980 B CN 104672980B CN 201510075010 A CN201510075010 A CN 201510075010A CN 104672980 B CN104672980 B CN 104672980B
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- China
- Prior art keywords
- enameled wire
- inorganic salt
- organic solvent
- polar organic
- varnish remover
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- 239000002966 varnish Substances 0.000 title claims abstract description 24
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 20
- 239000003495 polar organic solvent Substances 0.000 claims abstract description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 63
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical group [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 51
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 31
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 26
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 21
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 18
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000001110 calcium chloride Substances 0.000 claims description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 14
- 229940113088 dimethylacetamide Drugs 0.000 claims description 13
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 10
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 6
- 238000005660 chlorination reaction Methods 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 69
- 238000003756 stirring Methods 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002585 base Substances 0.000 abstract description 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical group 0.000 abstract description 2
- 150000001447 alkali salts Chemical class 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000002798 polar solvent Substances 0.000 abstract 1
- 210000003298 dental enamel Anatomy 0.000 description 28
- 229920000728 polyester Polymers 0.000 description 25
- 238000013019 agitation Methods 0.000 description 22
- 239000002131 composite material Substances 0.000 description 18
- 229920003055 poly(ester-imide) Polymers 0.000 description 15
- 229960001760 dimethyl sulfoxide Drugs 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- 239000004962 Polyamide-imide Substances 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001896 cresols Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 150000002466 imines Chemical class 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229920005479 Lucite® Polymers 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 a kind of enameled wire varnish remover, a kind of paint stripper that multiple enameled wire coat is had removal effect and preparation method thereof.Enameled wire varnish remover is made up of with inorganic salt polar organic solvent, and its percentage by weight consists of: polar organic solvent: 90%～99.9%, the dielectric constant 30～50 of described polar organic solvent；Inorganic salt: 0.1%～10%, described inorganic salt is alkali metal or alkali salt.The preparation method of the enameled wire varnish remover of the present invention is: joins in container by a certain amount of polar solvent and inorganic salt in proportion, stirs at a certain temperature.Various enameled wire coat can effectively be removed by the paint stripper that the present invention provides.Use the present invention enameled wire varnish remover enamel-covered wire is carried out depainting, have easy to operate, applied widely, paint stripping rate is fast, effective, efficiency is high, to features such as metal base not corrosion.
Description
Technical field
The invention belongs to paint stripper technical field, be specifically related to one and multiple enameled wire coat is had
Paint stripper except effect and preparation method thereof.
Background technology
Enamel-covered wire is a kind of conventional industry consumptive material, and the matrix copper cash in enamel covered wire is anaerobic or hypoxia copper
Bar, copper content, more than 95%, is the copper scrap resource of high-quality, and suitable Direct Regeneration utilizes, to copper scrap
Need before recycling to remove the paint on enamel-covered wire.Additionally, when welding in order to by enamel-covered wire
Firm welding, also the paint of enamel-covered wire welding position is removed totally more by need.At present, mainly
Use combustion method or Mechanical Method that enamel-covered wire is carried out depainting.Use combustion method depainting, not only pollute environment,
Give off environmentally harmful garbage, and serious shadow can be produced to needing the copper material quality reclaimed
Ring, be the most also unfavorable for the recycling of face coat.Mechanical Method depainting is used to have complex operation,
Waste time and energy, the shortcomings such as paint removal efficiency is low.
In recent years, the composition of some paint strippers is disclosed, such as patent of invention ZL200910155396.6
Open a kind of enameled wire varnish remover, this paint stripper has each component of following weight portion to be prepared from: dichloro
Methane 835～865 parts, methanol 77～83 parts, lucite considers 6.7～7.3 parts to be worth doing, nitric acid 17～23
Part, liquid paraffin 4.5～6.5 parts, annular dimethyl polysiloxane 37～43 parts.Patent of invention
Paint stripper disclosed in ZL200510105928.7, relates to big organic molten of the volatility such as dichloromethane
Agent.Patent of invention ZL03140354.9 discloses a kind of for polyester, polyesterimide enameled copper round wire
The paint stripper of paint film, comprises formic acid, chloroform, cresols, additive, each constituent content hundred
Proportion by subtraction is as follows: formic acid: 30%-50%, chloroform: 30%-40%, cresols: 5%-35%,
Additive: 0%-5%.
Existing patented technology and commercially available many variety classes chemical strippers, also exist depainting kind
Class is limited, paint stripping rate is slow, efficiency is low, paint stripper volatility big, to limitation such as base material corrosion are big.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of model easy to operate, applicable
Enclose wide, paint stripping rate is fast, effective, efficiency is high, volatility is little, paint incorrosive to metal base
Envelope curve paint stripper.
In order to solve above-mentioned technical problem, the technical scheme is that a kind of enameled wire varnish remover,
The component of this enameled wire varnish remover is (percentage by weight):
Polar organic solvent: 90%～99.9%, the dielectric constant 30～50 of described polar organic solvent；
Inorganic salt: 0.1%～10%, described inorganic salt is alkali metal or alkali salt.
Polar organic solvent forms complex with inorganic salt reaction, improves the polarity of organic solvent, promotes
The solvation of polar organic solvent, and then improve the depainting ability of solvent.
The enameled wire varnish remover of the present invention, is preferably and is prepared from (percentage by weight) by following component:
Polar organic solvent: 95%-99%；Described polar organic solvent includes N, N-dimethyl methyl
Amide (DMF), DMAC N,N' dimethyl acetamide (DMAc), N-Methyl pyrrolidone (NMP),
Dimethyl sulfoxide (DMSO) etc..
Inorganic salt: 1%-5%, inorganic salt includes lithium chloride (LiCl), magnesium chloride (MgCl2), chlorine
Change calcium (CaCl2) etc..
The polar organic solvent using aforementioned proportion is de-with the enameled wire varnish remover that inorganic salt is mixed to form
Painting effective, depainting scope is wide, can remove multiple enameled wire coat, can remove polyurethane, polyester,
The enameled wire coats such as polyester-imide, it is also possible to removing polyamidoimide and polyester, polyester-imide etc.
Composite paint film.
Preferably, described enameled wire varnish remover is prepared from (percentage by weight) by following component:
N,N-dimethylformamide (dielectric constant 36.7): 90%～99.9%；
At least one in calcium chloride, magnesium chloride, lithium chloride: 0.1%～10%.
N,N-dimethylformamide is used to mix with at least one in calcium chloride, magnesium chloride, lithium chloride
Being combined into paint stripper, paint stripping rate is fast, it is possible to removed various enameled wire coat in 2 hours, especially
Polyester paint film can be removed within half an hour.
Preferably, described enameled wire varnish remover is prepared from (percentage by weight) by following component:
N-Methyl pyrrolidone (dielectric constant 32.2)+dimethyl sulfoxide (dielectric constant 48.9):
90%～99.9%；Wherein: the weight ratio of N-Methyl pyrrolidone and dimethyl sulfoxide 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.
Use the enameled wire varnish remover of this preferred version, can effectively remove polyamidoimide and polyester
Composite paint film.
Preferably, enameled wire varnish remover is prepared from (percentage by weight) by following component:
N,N-dimethylformamide (dielectric constant 36.7)+DMAC N,N' dimethyl acetamide (dielectric constant
37.8): 90%～99.9%；Wherein: N,N-dimethylformamide and the weight of DMAC N,N' dimethyl acetamide
Amount ratio 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.
Use the enameled wire varnish remover of this preferred version, can effectively remove polyamidoimide sub-with polyester
The composite paint film of amine.
The preparation method of the enameled wire varnish remover of the present invention: in proportion each component is joined in container,
Stir at room temperature～120 DEG C, until inorganic salt is completely dissolved.
When the paint stripper of the present invention uses, enamel-covered wire is cut into segment (1～2cm), immerses the present invention
Enameled wire varnish remover in, at room temperature～100 DEG C stir certain time, the paint on enamel-covered wire will take off
Fall.
Advantages of the present invention and beneficial effect: 1) paint stripping rate is fast, it is possible to and in 2 hours, removing is each
Plant enameled wire coat；2) paint removal efficiency is high, and depainting area reaches more than 95%；It is 3) applied widely,
It is possible not only to remove the enameled wire coats such as polyurethane, polyester, polyester-imide, it is also possible to removing polyamide
Acid imide and the composite paint film of polyester, polyester-imide etc.；4) multiple wire enamel can be simultaneous for enter
Row removing, is more beneficial for industrialized production；5) preparation and the use operational approach of paint stripper are easy,
Paint stripper can repeated multiple times use.
Detailed description of the invention
The present invention is described in detail below by specific embodiment.
Embodiment 1:
Measuring DMF (DMF), dielectric constant 36.7,40mL (weighs 37.92g),
Weigh calcium chloride (CaCl2) 0.58g, join in round-bottomed flask, magnetic agitation under oil bath room temperature,
Make calcium chloride be dissolved completely in DMF, obtain depainting solution.
The polyester enamel covered wire being cut into 1～2 centimetre is added in above-mentioned depainting solution, at oil bath 60 DEG C
Magnetic agitation.After 73 minutes, polyester enamel covered wire surface paint film removes completely.
The polyester being cut into 1～2 centimetre is added above-mentioned with polyamidoimide composite paint film enamel covered wire
In depainting solution, magnetic agitation at oil bath 60 DEG C.After 60 minutes, polyester is combined with polyamidoimide
Paint film enamel covered wire surface paint film removes completely.
After depainting, after copper rod and paint film being filtered, paint stripper reusable edible, paint removing effect is the most not
Become.
Embodiment 2
Measuring N,N-dimethylacetamide (DMAc), dielectric constant 37.8,40mL (weighs 37.48g),
Weigh magnesium chloride (MgCl2) 4.16g, join in round-bottomed flask, magnetic agitation at oil bath 120 DEG C,
Make magnesium chloride be dissolved completely in N,N-dimethylacetamide, obtain depainting solution.
The polyester-imide enamel covered wire being cut into 1～2 centimetre is added in above-mentioned depainting solution, oil bath 60 DEG C
Lower magnetic agitation stirs.After 45 minutes, polyester-imide enamel covered wire surface paint film removes completely.
The polyester-imide being cut into 1～2 centimetre is added with polyamidoimide composite paint film enamel covered wire
In above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.Polyester-imide and polyamide acyl after 110 minutes
Imines composite paint film enamel covered wire surface paint film removes completely.After depainting, after copper rod and paint film are filtered,
Paint stripper reusable edible, paint removing effect is basically unchanged.
Embodiment 3:
Measuring DMF (DMF), dielectric constant 36.7,40mL (weighs 37.92g),
Weigh lithium chloride (LiCl) 0.038g, join in round-bottomed flask, magnetic agitation under oil bath room temperature,
Make lithium chloride be dissolved completely in DMF, obtain depainting solution.1～2 will be cut into
Centimetre polyester enamel covered wire add in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.100 points
After clock, polyester enamel covered wire surface paint film removes completely.
Comparative example 3:
Measuring DMF (DMF), dielectric constant 36.7,40mL (weighs 37.92g),
Joining in round-bottomed flask, under room temperature, magnetic agitation is long-time with embodiment 3 grade.1～2 li will be cut into
The polyester enamel covered wire of rice adds in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.300 minutes
Rear polyester enamel covered wire surface paint film still has residual.
In the case of other experiment conditions are consistent, by the addition of inorganic salt, the depainting time substantially shortens.
Embodiment 4:
Measuring N,N-dimethylacetamide (DMAc), dielectric constant 37.8,40mL (weighs 37.48g),
Weigh lithium chloride (LiCl) 0.038g, join in round-bottomed flask, magnetic agitation under oil bath room temperature,
Make lithium chloride be dissolved completely in N,N-dimethylacetamide, obtain depainting solution.1～2 will be cut into
Centimetre polyester enamel covered wire add in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.60 points
After clock, polyester enamel covered wire surface paint film removes completely.
Comparative example 4:
Measuring N,N-dimethylacetamide (DMAc), dielectric constant 37.8,40mL (weighs 37.48g),
Joining in round-bottomed flask, under room temperature, magnetic agitation is long-time with embodiment 4 grade.1～2 li will be cut into
The polyester enamel covered wire of rice adds in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.300 minutes
Rear polyester enamel covered wire surface paint film still has residual.
In the case of other experiment conditions are consistent, by the addition of inorganic salt, the depainting time substantially shortens.
Embodiment 5
Measure N-Methyl pyrrolidone (NMP), dielectric constant 32.2,20mL (20.56g), two
Methyl sulfoxide (DMSO), dielectric constant 48.9,20mL (22g), weigh lithium chloride (LiCl)
1.0g, calcium chloride (CaCl2) 1.24g, join in round-bottomed flask, magnetic agitation at oil bath 60 DEG C,
Lithium chloride, calcium chloride is made to be dissolved completely in N-Methyl pyrrolidone and dimethyl sulfoxide mixed solvent,
Obtain depainting solution.Polyester and the polyamidoimide composite paint film enamel covered wire of 1～2 centimetre will be cut into
Add in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.Polyester and polyamide acyl after 33 minutes
Imines composite paint film enamel covered wire surface paint film is removed.
Embodiment 6
Measure N-Methyl pyrrolidone (NMP), dielectric constant 32.2,4.3mL (4.42g), two
Methyl sulfoxide (DMSO), dielectric constant 48.9,35.7mL (39.27g), weigh lithium chloride (LiCl)
0.25g, calcium chloride (CaCl2) 2.25g, join in round-bottomed flask, at oil bath 60 DEG C, magnetic force stirs
Mix, make lithium chloride, calcium chloride be dissolved completely in N-Methyl pyrrolidone and dimethyl sulfoxide mixing is molten
In agent, obtain depainting solution.Polyester and the polyamidoimide composite paint film paint of 1～2 centimetre will be cut into
Copper-clad line adds in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.After 38 minutes, polyester is with poly-
Amide imide composite paint film enamel covered wire surface paint film is removed.
Embodiment 7
Measure N-Methyl pyrrolidone (NMP), dielectric constant 32.2,36.2mL (37.21g),
Dimethyl sulfoxide (DMSO), dielectric constant 48.9,3.8mL (4.18g), weigh lithium chloride (LiCl)
2.25g, calcium chloride (CaCl2) 0.25g, join in round-bottomed flask, at oil bath 60 DEG C, magnetic force stirs
Mix, make lithium chloride, calcium chloride be dissolved completely in N-Methyl pyrrolidone and dimethyl sulfoxide mixing is molten
In agent, obtain depainting solution.Polyester and the polyamidoimide composite paint film paint of 1～2 centimetre will be cut into
Copper-clad line adds in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.After 31 minutes, polyester is with poly-
Amide imide composite paint film enamel covered wire surface paint film is removed.
Embodiment 8
Measure DMF (DMF), dielectric constant 36.7,20mL (18.89g),
N,N-dimethylacetamide (DMAc), dielectric constant 37.8,20mL (18.73g), weigh chlorination
Lithium (LiCl) 1.0g, magnesium chloride (MgCl2) 1.12g, join in round-bottomed flask, oil bath 60 DEG C
Lower magnetic agitation, makes lithium chloride, magnesium chloride be dissolved completely in DMF and N, N-bis-
In methylacetamide mixed solvent, obtain depainting solution.The polyester-imide of 1～2 centimetre will be cut into poly-
Amide imide composite paint film enamel covered wire adds in above-mentioned depainting solution, and at oil bath 60 DEG C, magnetic force stirs
Mix.After 43 minutes, polyester-imide is taken off with polyamidoimide composite paint film enamel covered wire surface paint film
Remove.
Embodiment 9
Measure DMF (DMF), dielectric constant 36.7,4mL (3.78g), N, N-
Dimethyl acetylamide (DMAc), dielectric constant 37.8,36mL (33.71g), weigh lithium chloride (LiCl)
0.2g, magnesium chloride (MgCl2) 1.8g, join in round-bottomed flask, magnetic agitation at oil bath 60 DEG C,
Make lithium chloride, magnesium chloride be dissolved completely in N,N-dimethylformamide and DMAC N,N' dimethyl acetamide mixes
In bonding solvent, obtain depainting solution.The polyester-imide of 1～2 centimetre will be cut into polyamidoimide again
Close paint film enamel covered wire and add in above-mentioned depainting solution, magnetic agitation at oil bath 60 DEG C.After 50 minutes
Polyester-imide is removed with polyamidoimide composite paint film enamel covered wire surface paint film.
Embodiment 10
Measure DMF (DMF), dielectric constant 36.7,35.9mL (33.91g),
N,N-dimethylacetamide (DMAc), dielectric constant 37.8,4.1mL (3.84g), weigh chlorination
Lithium (LiCl) 1.8g, magnesium chloride (MgCl2) 0.2g, join in round-bottomed flask, oil bath 60 DEG C
Lower magnetic agitation, makes lithium chloride, magnesium chloride be dissolved completely in DMF and N, N-bis-
In methylacetamide mixed solvent, obtain depainting solution.The polyester-imide of 1～2 centimetre will be cut into poly-
Amide imide composite paint film enamel covered wire adds in above-mentioned depainting solution, and at oil bath 60 DEG C, magnetic force stirs
Mix.After 38 minutes, polyester-imide is taken off with polyamidoimide composite paint film enamel covered wire surface paint film
Remove.
The present invention can come general with the concrete form of other the spirit or central characteristics without prejudice to the present invention
State.Therefore, no matter from the point of view of which point, the above-mentioned experimental program of the present invention all can only be considered this
Invention explanation and the present invention can not be limited, claim indicates the scope of the present invention, and above-mentioned
Illustrate not point out the scope of the present invention, therefore, in the implication suitable with claims of the present invention
With any change in scope, all it is considered as being included within the scope of the claims.
Claims (6)
1. an enameled wire varnish remover, it is characterised in that consisting of of percentage:
Polar organic solvent: 90%～99.9%, the dielectric constant 30～50 of described polar organic solvent；
Inorganic salt: 0.1%～10%；
Described polar organic solvent is N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, N-
At least one in methyl pyrrolidone, dimethyl sulfoxide；Described inorganic salt is lithium chloride, chlorination
At least one in magnesium, calcium chloride.
Enameled wire varnish remover the most according to claim 1, it is characterised in that percentage by weight
Consisting of of number meter:
Polar organic solvent: 95%-99%；
Inorganic salt: 1%-5%.
Enameled wire varnish remover the most according to claim 1, it is characterised in that
Described polar organic solvent is N,N-dimethylformamide；
Described inorganic salt is at least one in calcium chloride, magnesium chloride, lithium chloride.
Enameled wire varnish remover the most according to claim 1, it is characterised in that
Described polar organic solvent is N,N-dimethylformamide；
Described inorganic salt is the mixture of calcium chloride and magnesium chloride, wherein calcium chloride and the weight of magnesium chloride
Amount ratio is 1:9～9:1.
Enameled wire varnish remover the most according to claim 1, it is characterised in that
Described polar organic solvent is the mixture of N-Methyl pyrrolidone and dimethyl sulfoxide, its
In: the weight ratio of N-Methyl pyrrolidone and dimethyl sulfoxide is 1:9～9:1；
Described inorganic salt is the mixture of lithium chloride and calcium chloride, wherein lithium chloride and the weight of calcium chloride
Amount ratio is 1:9～9:1.
Enameled wire varnish remover the most according to claim 1, it is characterised in that
Described polar organic solvent is N,N-dimethylformamide and DMAC N,N' dimethyl acetamide
Mixture, wherein the weight ratio of DMF and N,N-dimethylacetamide is 1:9～9:
1；
Described inorganic salt is the mixture of lithium chloride and magnesium chloride, wherein lithium chloride and the weight of magnesium chloride
Amount ratio is 1:9～9:1.
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| 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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| CN1017441B (en) * | 1988-02-29 | 1992-07-15 | 于国胜 | Low-poison paint stripper and its preparing method |
| JP2964108B2 (en) * | 1991-12-25 | 1999-10-18 | 株式会社ネオス | Paint remover |
| CN101412863A (en) * | 2007-10-16 | 2009-04-22 | 西安工业大学 | Low-volatile low-toxic paint remover |
| CN104231713B (en) * | 2013-06-17 | 2017-01-18 | 西门子数控（南京）有限公司 | Paint remover and paint removing method thereof |
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