CN103484880B - A kind of method removing enamelled coating - Google Patents
A kind of method removing enamelled coating Download PDFInfo
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- CN103484880B CN103484880B CN201310441673.6A CN201310441673A CN103484880B CN 103484880 B CN103484880 B CN 103484880B CN 201310441673 A CN201310441673 A CN 201310441673A CN 103484880 B CN103484880 B CN 103484880B
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- paint
- enamelled coating
- removing liquid
- iron plate
- dispersing agent
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Abstract
The present invention discloses a kind of method removing enamelled coating, after the method comprises the steps: that workpiece is incubated 10 ~ 20 minutes at-15 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid contains the sodium hydroxide of 5 ~ 7wt%, the trolamine of 1 ~ 1.5wt%, the dispersing agent MF of 0.5 ~ 1wt%, the disodium-hydrogen of 0.01 ~ 0.1wt%, surplus is water.The inventive method is simple to operate, and paint removal is effective, applied widely, and environmental pollution is few.
Description
Technical field
The present invention relates to a kind of method removing paint layer on surface of workpiece.
Background technology
For preventing iron workpiece from getting rusty, usually at surface spraying one deck rust preventive coating of iron tool, the phenomenons such as enamelled coating is aging because long-term exposure can go out, come off, or workpiece is when keeping in repair, as welding, need the enamelled coating of workpiece surface thoroughly to be removed, again to spray paint or to keep in repair.Existing method of chemical treatment paint remover used is mostly organic solvent type, big for environment pollution.Baking thermal treatment rule easily produces obnoxious flavour, and has a negative impact to workpiece substrate.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of method removing enamelled coating.
To achieve these goals, the invention provides following technical scheme:
A kind of method removing enamelled coating, after comprising the steps: that workpiece is incubated 10 ~ 20 minutes at-15 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid contains the sodium hydroxide of 5 ~ 7wt%, the trolamine of 1 ~ 1.5wt%, the dispersing agent MF of 0.5 ~ 1wt%, the disodium-hydrogen of 0.01 ~ 0.1wt%, surplus is water.
Further, the temperature of described paint-removing liquid is 40 ~ 50 DEG C.
Further, described hyperacoustic frequency is 0.1 ~ 10MHz.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
The preparation of sample: spray the enamelled coating that one deck 0.2mm is thick on the iron plate through sanding and polishing process, paint vehicle is red lion board alcohol acid antirust paint, carries out spraying operation according to the description of product.
The iron plate of spraying enamelled coating is cooled to-30 DEG C, and keep after 15 minutes at such a temperature, immersing temperature is rapidly that in the paint-removing liquid of 40 DEG C, (paint-removing liquid contains the sodium hydroxide of 5wt%, the trolamine of 1.5wt%, the dispersing agent MF of 0.5wt%, the disodium-hydrogen of 0.1wt%, surplus is water), be the ultrasonication 30min of 5MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface comes off completely, place after 2 hours, rust is not returned in iron plate surface.
Reference examples 1: the iron plate of spraying enamelled coating is without cooling process, direct immersion temperature is that in the paint-removing liquid of 40 DEG C, (paint-removing liquid contains the sodium hydroxide of 5wt%, the trolamine of 1.5wt%, the dispersing agent MF of 0.5wt%, surplus is water), be the ultrasonication 30min of 5MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface removes area 78 ~ 80%, place after 2 hours, rust is slightly returned in iron plate surface.
Dispersing agent MF is purchased from Anyang dragon's fountain Chemical Co., Ltd..
Embodiment 2
The preparation of sample: spray the enamelled coating that one deck 0.3mm is thick on the iron plate through sanding and polishing process, paint vehicle is old man's board epoxy-based lacquers 15570, carries out spraying operation according to the description of product.
The iron plate of spraying enamelled coating is cooled to-20 DEG C, and keep after 20 minutes at such a temperature, immersing temperature is rapidly that in the paint-removing liquid of 45 DEG C, (paint-removing liquid contains the sodium hydroxide of 6wt%, the trolamine of 1wt%, the dispersing agent MF of 1wt%, the disodium-hydrogen of 0.01wt%, surplus is water), be the ultrasonication 30min of 10MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface comes off completely, place after 2 hours, rust is not returned in iron plate surface.
Reference examples 2: the iron plate of spraying enamelled coating is without cooling process, direct immersion temperature is that in the paint-removing liquid of 45 DEG C, (paint-removing liquid contains the sodium hydroxide of 6wt%, the trolamine of 1wt%, the dispersing agent MF of 1wt%, surplus is water), be the ultrasonication 30min of 10MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface removes area 80 ~ 81%, place after 2 hours, rust is slightly returned in iron plate surface.
Embodiment 3
The preparation of sample: spray the enamelled coating that one deck 0.4mm is thick on the iron plate through sanding and polishing process, paint vehicle is red lion board alcohol acid antirust paint, carries out spraying operation according to the description of product.
The iron plate of spraying enamelled coating is cooled to-15 DEG C, and keep after 10 minutes at such a temperature, immersing temperature is rapidly that in the paint-removing liquid of 50 DEG C, (paint-removing liquid contains the sodium hydroxide of 7wt%, the trolamine of 1.5wt%, the dispersing agent MF of 0.5wt%, the disodium-hydrogen of 0.06wt%, surplus is water), be the ultrasonication 50min of 0.1MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface comes off completely, place after 2 hours, rust is not returned in iron plate surface.
Reference examples 3: the iron plate of spraying enamelled coating is without cooling process, direct immersion temperature is that in the paint-removing liquid of 50 DEG C, (paint-removing liquid contains the sodium hydroxide of 7wt%, the trolamine of 1.5wt%, the dispersing agent MF of 0.5wt%, surplus is water), be the ultrasonication 50min of 0.1MHz by frequency simultaneously, take out, rinse, the enamelled coating on iron plate surface removes area 79 ~ 80%, place after 2 hours, rust is slightly returned in iron plate surface.
Method of the present invention is mainly used in removing the epoxy-based lacquers of various surface of workpiece, alkyd paint or unsaturated polyester lacquering, and simple to operate, paint removal is effective, applied widely, and environmental pollution is few.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. remove the method for enamelled coating for one kind, it is characterized in that, after comprising the steps: that workpiece is incubated 10 ~ 20 minutes at-15 ~-30 DEG C, be immersed into ultrasonication 30 ~ 50min in paint-removing liquid, wherein, described paint-removing liquid is containing the sodium hydroxide of 5 ~ 7wt%, the trolamine of 1 ~ 1.5wt%, the dispersing agent MF of 0.5 ~ 1wt%, the disodium-hydrogen of 0.01 ~ 0.1wt%, surplus is water;
The temperature of described paint-removing liquid is 40 ~ 50 DEG C;
Described hyperacoustic frequency is 0.1 ~ 10MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310441673.6A CN103484880B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing enamelled coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310441673.6A CN103484880B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing enamelled coating |
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| Publication Number | Publication Date |
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| CN103484880A CN103484880A (en) | 2014-01-01 |
| CN103484880B true CN103484880B (en) | 2015-11-18 |
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| CN201310441673.6A Active CN103484880B (en) | 2013-09-26 | 2013-09-26 | A kind of method removing enamelled coating |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2227541A (en) * | 1989-01-31 | 1990-08-01 | Bryan John Cooper | Removing a coating from a coated pipe |
| CN1260370A (en) * | 1999-01-08 | 2000-07-19 | 曾绍谦 | Paint stripping method of super-low-temp. gas-assisting for surface layer of thermo-plastic/thermo-set composite material |
| CN1775871A (en) * | 2005-12-12 | 2006-05-24 | 北京科技大学 | Alkali paint remover and its preparing and using method |
| CN1887979A (en) * | 2006-07-14 | 2007-01-03 | 北京科技大学 | Green alkaline paint remover for eliminating coating from electronic circuit board and its prepn and usage |
| CN101747677A (en) * | 2010-01-19 | 2010-06-23 | 安徽江南机械有限责任公司 | Water-based paint remover as well as preparation method and using method thereof |
-
2013
- 2013-09-26 CN CN201310441673.6A patent/CN103484880B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2227541A (en) * | 1989-01-31 | 1990-08-01 | Bryan John Cooper | Removing a coating from a coated pipe |
| CN1260370A (en) * | 1999-01-08 | 2000-07-19 | 曾绍谦 | Paint stripping method of super-low-temp. gas-assisting for surface layer of thermo-plastic/thermo-set composite material |
| CN1775871A (en) * | 2005-12-12 | 2006-05-24 | 北京科技大学 | Alkali paint remover and its preparing and using method |
| CN1887979A (en) * | 2006-07-14 | 2007-01-03 | 北京科技大学 | Green alkaline paint remover for eliminating coating from electronic circuit board and its prepn and usage |
| CN101747677A (en) * | 2010-01-19 | 2010-06-23 | 安徽江南机械有限责任公司 | Water-based paint remover as well as preparation method and using method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李斌等.飞机脱漆剂及脱漆技术.《清洗世界》.2010,第26卷(第1期),全文. * |
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| CN103484880A (en) | 2014-01-01 |
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Inventor after: Huang Jianlin Inventor before: Yang Longxing |
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Effective date of registration: 20170619 Address after: 510000, room 286, No. 508, Zhongshan Road, Tianhe District, Guangdong, Guangzhou Patentee after: Chemical Co.,Ltd. Guangdong Hill Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170619 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 214000 Jiangsu city in Wuxi Province Economic Development Zone Huishan Spring Road No. 588 Patentee before: WUXI YANGGONG MACHINERY MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20180104 Address after: 300000 Tianjin City Economic Development Zone Jizhou District Jun Road No. 12 Patentee after: CECEP GUOHUAN NEW MATERIAL Co.,Ltd. Address before: 510000, room 286, No. 508, Zhongshan Road, Tianhe District, Guangdong, Guangzhou Patentee before: Chemical Co.,Ltd. Guangdong Hill |