CN106519781A - Preparation method and use of powdery coating removal composition - Google Patents
Preparation method and use of powdery coating removal composition Download PDFInfo
- Publication number
- CN106519781A CN106519781A CN201611002905.8A CN201611002905A CN106519781A CN 106519781 A CN106519781 A CN 106519781A CN 201611002905 A CN201611002905 A CN 201611002905A CN 106519781 A CN106519781 A CN 106519781A
- Authority
- CN
- China
- Prior art keywords
- powdery paints
- removing composition
- paint removing
- coating
- paint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C09D9/005—Chemical paint or ink removers containing organic solvents
-
- 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
- C09D9/04—Chemical paint or ink removers with surface-active agents
Abstract
The invention discloses a use of tert-butyl hydroperoxide in preparation of a powdery coating removal composition and the coating removal composition. The coating removal composition comprises, by mass, 48 to 60% of dichloromethane, 15 to 30% of methanol, 15 to 25% of tert-butyl hydroperoxide, 1 to 2% of liquid paraffin and 0.2 to 1% of sodium hydroxide. The coating removal composition provided by the invention has the advantages of low cost, less pollution, short coating removal time and strong penetrability, can realize complete separation of the coating and a base and does not produce corrosion to the base. The coating removal composition provided by the invention also has strong depainting ability to the thick coating, is recyclable and reused after being soaked or rinsed, is especially suitable for removing the metal surface coating, comprises epoxy resin, polyurethane or acrylic resin, and can provide a technical support for development of an industrial cleaning agent.
Description
Technical field
The invention belongs to industry cleaning link field, more particularly, to a kind of powdery paints paint removing composition and its preparation side
Method and application.
Background technology
Organic solvent type paint stripper with dichloromethane as main solvent is paint stripper common on the market.Existing dichloromethane
Highly basic or strong acid can be added in alkane type paint stripper, paint film is dissolved so as to remove paint film beneficial to organic solvent, but it is existing
In dichloromethane paint stripper, want to reach preferable paint removing effect, the concentration of highly basic strong acid is typically more than 3%, and dichloromethane
Content it is also higher, the highly basic strong acid condition of aforementioned proportion easily causes corrosion to metal base, while the content mistake of organic solvent
Height, also so that the toxicity of paint stripper and environmental pollution are increased, additionally, existing dichloromethane type paint stripper priming paint is de- with base material
From effect on driving birds is not good, easily paint film residual being left in positions such as the turnings of base material, and which being during disengaging, paint film is dissolved
Waste liquid is formed in paint stripper, causes liquid waste processing complicated, reclaim difficult, recycling number of times is not high, and existing depainting
Agent reaches obvious paint removing effect and needs 0.5 ~ 1h, and overall efficiency is not high.
Therefore, develop efficient, and take into account safety, economy, process convenient, be provided simultaneously with preferably corroding base material low taking off
Paint agent is one of current urgent need to solve the problem, is had important practical significance.
The content of the invention
It is an object of the invention to according to deficiency of the prior art, there is provided a kind of powdery paints paint removing composition.Institute
Powdery paints paint removing composition is stated with, depainting power excellent performance low to metal protection, post processing is easy, and paint stripping rate is fast etc.
Advantage.
Another object of the present invention is to provide the preparation method of above-mentioned powdery paints paint removing composition.
It is still another object of the present invention to provide above-mentioned powdery paints paint removing composition is clear in the coating for preparing metal surface
Application in lotion.
The purpose of the present invention is achieved through the following technical solutions：
Application of the tertbutanol peroxide in powdery paints paint removing composition is prepared, the tertbutanol peroxide are de- in powdery paints
Mass content in coating compositions is no less than 15%；Contain highly basic in the powdery paints paint removing composition.
Inventor has found, in powdery paints paint removing composition, adds appropriate tertbutanol peroxide, can lift powder
The depainting performance of coating paint removing composition.
Preferably, containing the highly basic less than gross weight 3% in the powdery paints paint removing composition.Normally, it is alkaline
In paint removing composition, the highly basic containing at least 3 mass %, after adding tertbutanol peroxide in paint removing composition, has been surprisingly found that,
The content of highly basic can be significantly reduced, therefore also reduce corrosion of the paint removing composition to metal base.
Preferably, mass content of the tertbutanol peroxide in powdery paints paint removing composition is 15 ~ 25%.
The invention provides a kind of powdery paints paint removing composition, including component as follows by mass percentage：
Dichloromethane 48 ~ 60%
Methanol 15 ~ 30%
Tertbutanol peroxide 15 ~ 25%
Liquid paraffin 1 ~ 2%
Sodium hydroxide 0.2 ~ 1%.
The present invention is added to tertbutanol peroxide in powdery paints paint removing composition, its permeable entrance metal and paint film
The interface of connection, and to destroying the connection between metal and paint film, so that paint film is complete separate from matrix, so as to obtain
Obtain outstanding paint removing effect.Simultaneously as paint film monoblock comes off, can be easily by paint film from powdery paints paint removing composition
Separate in the eluent of composition, eluent is recycled, and more preferable depainting can be obtained within the shorter time
Effect.Meanwhile, tertbutanol peroxide can also reduce the content of highly basic in being added to paint removing composition so that paint stripper neutral and alkali
Concentration is reduced, and reduces the corrosion to metallic matrix, therefore so that paint stripper of the present invention protects base while paint removing effect is good
Material.
Preferably, it is made up of component as follows by mass percentage：
Dichloromethane 55%
Methanol 22%
Tertbutanol peroxide 21%
Liquid paraffin 1.5%
Sodium hydroxide 0.5%.
The preparation method of the powdery paints paint removing composition, comprises the steps：Each component mix homogeneously is obtained final product into institute
State powdery paints paint removing composition.
Further, the described powdery paints paint removing composition of present invention protection is in the coating abluent for preparing metal surface
In application.
Preferably, the coating is epoxy resin, polyurethane or acrylate.
Preferably, alloy of the metal for zinc, aluminum, magnesium, copper, ferrum or its two or more composition.
It is highly preferred that the metal is zinc or aluminum.
Compared with prior art, the present invention has advantages below and beneficial effect：
Powdery paints paint removing composition provided by the present invention is with low cost, and pollution is few, and the depainting time is short, and penetration is strong, 10
The interior energy of minute is kept completely separate coating and matrix completely, and corrosion-free to matrix, the powdery paints depainting group that the present invention is provided
Compound also possesses stronger depainting ability to the coating for applying thickness, and the powdery paints paint removing composition is through immersion or flushing
Recyclable afterwards to reuse, the coating that the powdery paints paint removing composition that the present invention is provided is particularly suited for processing metal surface is clear
Wash, above-mentioned coating includes epoxy resin, polyurethane or acrylate, technical support can be provided for the development of industrial cleaning agent.
Specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment, but embodiment does not do any type of to the present invention
Limit.Unless stated otherwise, the reagent for adopting of the invention, method and apparatus are for the art conventional reagent, method and apparatus.
Unless stated otherwise, agents useful for same of the present invention and material are commercial.
The compound method of paint removing composition：Raw material, ratio feeds intake according to the rules at room temperature, is then stirred with blender
It is uniform, without the need for ripening, i.e., with using.
Embodiment 1：
Base material is zine plate, and zine plate is coated for epoxy coating.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 55 |
| Methanol | 22 |
| Tertbutanol peroxide | 21 |
| Liquid paraffin | 1.5 |
| Sodium hydroxide | 0.5 |
Embodiment 2：
Base material is aluminium sheet, and aluminium sheet is coated for acrylate paint.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 48 |
| Methanol | 25 |
| Tertbutanol peroxide | 25 |
| Liquid paraffin | 1.7 |
| Sodium hydroxide | 0.3 |
Embodiment 3：
Base material is aluminium sheet, and aluminium sheet is coated for polyurethane coating.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 60 |
| Methanol | 15 |
| Tertbutanol peroxide | 22.5 |
| Liquid paraffin | 2 |
| Sodium hydroxide | 0.5 |
Embodiment 4：
Base material is aluminium sheet, and aluminium sheet is coated for polyurethane coating.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 53 |
| Methanol | 30 |
| Tertbutanol peroxide | 15 |
| Liquid paraffin | 1.5 |
| Sodium hydroxide | 0.5 |
Embodiment 5
Powdery paints paint removing composition formula is same as Example 4, and difference is that the film thickness of polyurethane coating is on base material
5mm。
Comparative example 1：
Base material is zine plate, and zine plate is coated for epoxy coating.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 70 |
| Methanol | 23 |
| Tertbutanol peroxide | 5 |
| Liquid paraffin | 1.5 |
| Sodium hydroxide | 0.5 |
Comparative example 2：
Base material is aluminium sheet, and aluminium sheet is coated for epoxy coating.Film thickness is 3mm.
Powdery paints paint removing composition formula is as follows：
| Raw material | Quality proportioning（%） |
| Dichloromethane | 73.5 |
| Methanol | 22 |
| Liquid paraffin | 1.5 |
| Sodium hydroxide | 3.0 |
Corresponding coating paint film will be prepared on the metal base of embodiment and comparative example, paint film is prepared with reference to GB/T 1727-
1992.The paint stripper provided in embodiment and comparative example is carried out into soaking and washing, paint removal efficiency method of testing to paint film：Reference
GB/T 1745–89《Paint stripper paint removal efficiency is determined》Tested.Corrosion situation is observed by the naked eye, unchanged
For corrosion-free, there is black splotch for slight erosion, stricture of vagina shape striped occur for heavy corrosion.
Table 1 is paint removing effect in embodiment and comparative example：
Table 1
| Embodiment is numbered | t（Depainting）/min | Depainting situation | Corrosion condition |
| Embodiment 1 | 6 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Embodiment 2 | 10 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Embodiment 3 | 10 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Embodiment 4 | 10 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Embodiment 5 | 10 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Comparative example 1 | 45 | Coating paint film completely disengages from metal surface | Metal surface is corrosion-free |
| Comparative example 2 | 6 | The dissolving of coating paint film departs from metal surface | Metal surface heavy corrosion |
From the point of view of result in table 1, the paint stripper that comparative example 1 ~ 2 is provided is undesirable to the cleaning performance of coating paint film.Peroxidating
The addition of the tert-butyl alcohol is too low, the overlong time that paint film departs from, and is unfavorable for practical application.The present invention with the addition of the tertiary fourth of peroxidating
After alcohol, paint stripper neutral and alkali concentration is reduced, corrosion-free to base material, and cleaning performance protects base material while good.
The abluent cleaning performance provided in the embodiment of the present invention 1 ~ 5 is very good, and the interior energy of 10 minutes takes off coating completely
From metallic substrate surface, there is no any corrosion to metal, and do not stay dead angle, show that the paint film of the paint stripper of present invention offer is clear
Wash efficiency, degree of cleaning and to preferable effect having been reached in the protection of metal base.
Obviously, above-described embodiment is only the citing that clearly explanation is done, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, the change or change of multi-form can also be made on the basis of the above description
It is dynamic.There is no need to be exhaustive to all of embodiment.And thus amplified aobvious and the change of suggestion or variation
Among the protection domain of the invention.
Claims (8)
1. application of the tertbutanol peroxide in powdery paints paint removing composition is prepared, the tertbutanol peroxide is in powdery paints
Mass content in paint removing composition is no less than 15%；Contain highly basic in the powdery paints paint removing composition.
2. application according to claim 1, containing the highly basic less than gross weight 3% in the powdery paints paint removing composition.
3. a kind of powdery paints paint removing composition, it is characterised in that including component as follows by mass percentage：
Dichloromethane 48 ~ 60%
Methanol 15 ~ 30%
Tertbutanol peroxide 15 ~ 25%
Liquid paraffin 1 ~ 2%
Sodium hydroxide 0.2 ~ 1%.
4. powdery paints paint removing composition according to claim 3, it is characterised in that by as follows by mass percentage
Component is constituted：
Dichloromethane 55%
Methanol 22%
Tertbutanol peroxide 21%
Liquid paraffin 1.5%
Sodium hydroxide 0.5%.
5. the preparation method of powdery paints paint removing composition described in claim 3 or 4, it is characterised in that comprise the steps：Will
Each component mix homogeneously obtains final product the powdery paints paint removing composition.
6. the powdery paints paint removing composition described in claim 3 prepare metal surface powdery paints abluent in should
With.
7. application according to claim 6, it is characterised in that the powdery paints is epoxy resin, polyurethane or propylene
Acid esters.
8. application according to claim 6, it is characterised in that the metal is zinc, aluminum, magnesium, copper, ferrum or which is two or more
The alloy of composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002905.8A CN106519781B (en) | 2016-11-15 | 2016-11-15 | Powder coating paint removing composition and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002905.8A CN106519781B (en) | 2016-11-15 | 2016-11-15 | Powder coating paint removing composition and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106519781A true CN106519781A (en) | 2017-03-22 |
| CN106519781B CN106519781B (en) | 2020-01-03 |
Family
ID=58351637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611002905.8A Expired - Fee Related CN106519781B (en) | 2016-11-15 | 2016-11-15 | Powder coating paint removing composition and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106519781B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2377710A (en) * | 2001-07-18 | 2003-01-22 | Henkel Kgaa | A paint stripper |
| CN1488687A (en) * | 2002-10-09 | 2004-04-14 | 长沙摩尔环保材料有限公司 | Neutral multifunctional paint remover and manufacturing method thereof |
| CN102337053A (en) * | 2011-11-03 | 2012-02-01 | 英科特(宁波)机电设备有限公司 | Neutral paint stripper |
| CN103543620A (en) * | 2013-11-11 | 2014-01-29 | 刘国政 | Developing film removing liquid for printed circuit board (PCB) |
| CN103980761A (en) * | 2014-05-22 | 2014-08-13 | 陕西师范大学 | ABS (Acrylonitrile Butadiene Styrene) plastic paint remover and paint removal method thereof |
| CN104231716A (en) * | 2014-09-25 | 2014-12-24 | 南通万德科技有限公司 | Industrial paint film separating agent and application thereof |
-
2016
- 2016-11-15 CN CN201611002905.8A patent/CN106519781B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2377710A (en) * | 2001-07-18 | 2003-01-22 | Henkel Kgaa | A paint stripper |
| CN1488687A (en) * | 2002-10-09 | 2004-04-14 | 长沙摩尔环保材料有限公司 | Neutral multifunctional paint remover and manufacturing method thereof |
| CN102337053A (en) * | 2011-11-03 | 2012-02-01 | 英科特(宁波)机电设备有限公司 | Neutral paint stripper |
| CN103543620A (en) * | 2013-11-11 | 2014-01-29 | 刘国政 | Developing film removing liquid for printed circuit board (PCB) |
| CN103980761A (en) * | 2014-05-22 | 2014-08-13 | 陕西师范大学 | ABS (Acrylonitrile Butadiene Styrene) plastic paint remover and paint removal method thereof |
| CN104231716A (en) * | 2014-09-25 | 2014-12-24 | 南通万德科技有限公司 | Industrial paint film separating agent and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106519781B (en) | 2020-01-03 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20200103 Termination date: 20201115 |