CN109939908A - Acid and alkali-resistance coating processing technology - Google Patents
Acid and alkali-resistance coating processing technology Download PDFInfo
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- CN109939908A CN109939908A CN201910193702.9A CN201910193702A CN109939908A CN 109939908 A CN109939908 A CN 109939908A CN 201910193702 A CN201910193702 A CN 201910193702A CN 109939908 A CN109939908 A CN 109939908A
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Abstract
The present invention relates to a kind of acid and alkali-resistance coating processing technologys, the following steps are included: successively cleaning tank body using alkali and hot water, then it is dried after tank body being impregnated 1-2h in acid, inside courtyard is coated on to the inner surface of the tank body, form inner coating, wherein, by weight, inside courtyard includes: 15-25 parts of magnesium powder, 5-20 parts of silica solution, 5-15 parts of silane coupling agent, 0.5-2.5 parts of coalescing agent, 5-8 parts of dimercapto 2-ethyl hexyl ethanoate stannous methide, 5-20 parts of organic polymer emulsion, 15-40 parts of alcohols solvent, 5-20 parts of glycerol ether compound, 5-25 parts of water；The partial size of the magnesium powder is 300-500nm；Rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight, rustproof lacquer includes: 40-60 parts of PTFE Ultramicro-powder, 10-20 parts of hydroxy-ethyl acrylate, 30-40 parts of organic solvent；The partial size of PTFE Ultramicro-powder is 500-800nm.Acid and alkali-resistance coating of the invention can be resistant to the corrosion of strong acid, highly basic, strong to the adhesive force of tank body.
Description
Technical field
The present invention relates to coat preparing technology field more particularly to a kind of acid and alkali-resistance coating processing technologys.
Background technique
Currently, domestic aluminium pot is typically all to be used in above cosmetics, since the aluminium in aluminium pot has certain lively type,
PH value is only applicable in the neutral products within the scope of 5-9, and is not applied for holding some special acid or alkaline contents
Object, because that can generate coating shedding, content pollution after using, these acid or alkaline contents even can corrode aluminium pot, make
At the serious phenomenon such as perforation, leakage.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of acid and alkali-resistance coating processing technology, technique letter
Single, acid and alkali-resistance coating can be resistant to the corrosion of strong acid, highly basic, strong to the adhesive force of tank body.
The present invention provides a kind of acid and alkali-resistance coating processing technology, acid and alkali-resistance coating includes inner coating and external coating, is added
Work technique the following steps are included:
(1) tank body is successively cleaned using alkali and hot water, is dried after tank body is then impregnated 1-2h in acid, the tank body
Material includes aluminium；The pH value of the alkali is 10-12, and the pH value of the acid is 3-5；
(2) inside courtyard is coated on to the inner surface of the tank body, forms inner coating, wherein by weight, the inside courtyard
It include: 15-25 parts of magnesium powder, 5-20 parts of silica solution, 5-15 parts of silane coupling agent, 0.5-2.5 parts of coalescing agent, dimercapto acetic acid is different
5-8 parts of monooctyl ester stannous methide, 5-20 parts of organic polymer emulsion, 15-40 parts of alcohols solvent, 5-20 parts of glycerol ether compound,
5-25 parts of water；The partial size of the magnesium powder is 300-500nm；
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein with weight
Meter, the rustproof lacquer include: 40-60 parts of PTFE Ultramicro-powder, 10-20 parts of hydroxy-ethyl acrylate, 30-40 parts of organic solvent；Institute
The partial size for stating PTFE Ultramicro-powder is 500-800nm.
Further, internally coated with a thickness of 5-10 μm, external coating with a thickness of 2-5 μm.
Further, it in step (1), when cleaning tank body using alkali, is carried out using spray process, spray time 5-
10min。
Further, in step (1), the temperature of the hot water is 60-80 DEG C.
Further, in step (2), the silane coupling agent be amino silane, epoxy radicals silicone hydride, vinyl silanes,
One or more of acyloxy silane and hydrosulphonyl silane.
Further, in step (2), the coalescing agent is propandiol butyl ether and/or dipropylene glycol methyl ether.
Further, in step (2), the organic polymer emulsion is vinyl acetate copolymer emulsion and/or styrene-
Acrylate copolymer emulsion.
Further, in step (2), the alcohols solvent is one of n-butanol, isobutanol, isopropanol and ethyl alcohol
Or it is several.
Further, in step (2), the glycerol ether compound be trimethylolpropane triglycidyl ether, 1,
One or more of 4- butanediol diglycidyl ether and ethylene glycol diglycidylether.
Further, in step (3), the organic solvent is butyl acetate, propylene glycol methyl ether acetate and dimethylbenzene
One or more of
According to the above aspect of the present invention, the present invention has at least the following advantages:
Tank body is cleaned using alkali and hot water, the surface cleanness and surface tension of tank body can be improved, is convenient for inside courtyard
It is attached to tank inner surface, then impregnates tank body in acid, passivation is played to the metal on its surface, enhances its acid and alkali-resistance
Ability.The inside courtyard that existing epoxy novolac type is substituted using the inside courtyard of organosol class keeps being resistant to for coating strong
The corrosion of acid, highly basic.
The present invention, wherein the magnesium powder contained can play the role of protecting aluminium pot, works as tank interior when preparing inner coating
When fraction breakage occurs, since magnesium is more active than aluminum chemistry property, magnesium is corroded as anode, prevent aluminium in tank body by into
One step corrosion, to protect tank skin.
PTFE chemical inertness in external coating, acid-alkali-corrosive-resisting play a protective role to the inner coating and tank body of its inside.
There is two layers of protective film above tank inner surface in this way, improves its acid-alkali-corrosive-resisting.
The tank body that process of the invention is crossed can also be applied to strong acid, strong basicity in terms of can be widely applied to cosmetics
Air clearing product in terms of, economic benefit is good.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention and cooperation, detailed description is as follows below.
Specific embodiment
With reference to embodiment, the embodiment of the present invention is furthur described in detail.Following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
Embodiment 1
A kind of acid and alkali-resistance coating processing technology, acid and alkali-resistance coating include with a thickness of 10 μm inner coating and with a thickness of 5 μm
External coating, processing technology the following steps are included:
(1) pH value is used to spray aluminium pot for 12 lye, then spray time 5min uses temperature for 60 DEG C of hot water
Tank body is cleaned, after to be cleaned to neutral, is dried after tank body is impregnated 1h in the acid that pH value is 3.
(2) inside courtyard is coated on to the inner surface of tank body, forms inner coating, wherein by weight, inside courtyard includes: magnesium
15 parts of powder, 10 parts of silica solution, 5 parts of amino silane, 2.5 parts of propandiol butyl ether, 8 parts of dimercapto 2-ethyl hexyl ethanoate stannous methide, second
14.5 parts of sour ethylene copolymerization emulsions, 15 parts of isobutanol, 5 parts of trimethylolpropane triglycidyl ether, 25 parts of water.Wherein, magnesium powder
Partial size be 300nm.
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight,
Rustproof lacquer includes: 60 parts of PTFE Ultramicro-powder, 10 parts of hydroxy-ethyl acrylate, 30 parts of dimethylbenzene.Wherein, the partial size of PTFE Ultramicro-powder is
500nm。
Embodiment 2
A kind of acid and alkali-resistance coating processing technology, acid and alkali-resistance coating include with a thickness of 8 μm of inner coating and outer with a thickness of 3 μm
Coating, processing technology the following steps are included:
(1) pH value is used to spray aluminium pot for 10 lye, then spray time 10min uses temperature for 70 DEG C of heat
Water cleans tank body, after to be cleaned to neutral, dries after tank body is impregnated 2h in the acid that pH value is 5.
(2) inside courtyard is coated on to the inner surface of tank body, forms inner coating, wherein by weight, inside courtyard includes: magnesium
25 parts of powder, 5 parts of silica solution, 15 parts of vinyl silanes, 0.5 part of dipropylene glycol methyl ether, dimercapto 2-ethyl hexyl ethanoate stannous methide 5
Part, 5 parts of vinyl acetate copolymer emulsion, 34.5 parts of isopropanol, 5 parts of 1,4-butanediol diglycidyl ether, 5 parts of water.Wherein, magnesium powder
Partial size be 500nm.
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight,
Rustproof lacquer includes: 40 parts of PTFE Ultramicro-powder, 20 parts of hydroxy-ethyl acrylate, 30 parts of propylene glycol methyl ether acetate.Wherein, PTFE ultra micro
The partial size of powder is 500nm.
Embodiment 3
A kind of acid and alkali-resistance coating processing technology, acid and alkali-resistance coating include with a thickness of 8 μm of inner coating and outer with a thickness of 5 μm
Coating, processing technology the following steps are included:
(1) pH value is used to spray aluminium pot for 11 lye, then spray time 8min uses temperature for 80 DEG C of hot water
Tank body is cleaned, after to be cleaned to neutral, is dried after tank body is impregnated 1.5h in the acid that pH value is 4.
(2) inside courtyard is coated on to the inner surface of tank body, forms inner coating, wherein by weight, inside courtyard includes: magnesium
10 parts of powder, 20 parts of silica solution, 5 parts of hydrosulphonyl silane, 2 parts of propandiol butyl ether, 5 parts of dimercapto 2-ethyl hexyl ethanoate stannous methide, benzene second
20 parts of alkene-acrylate copolymer emulsion, 20 parts of n-butanol, 10 parts of ethylene glycol diglycidylether, 8 parts of water.Wherein, the grain of magnesium powder
Diameter is 400nm.
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight,
Rustproof lacquer includes: 50 parts of PTFE Ultramicro-powder, 10 parts of hydroxy-ethyl acrylate, 40 parts of butyl acetate.Wherein, the partial size of PTFE Ultramicro-powder
For 600nm.
Embodiment 4
A kind of acid and alkali-resistance coating processing technology, acid and alkali-resistance coating include with a thickness of 5 μm of inner coating and outer with a thickness of 2 μm
Coating, processing technology the following steps are included:
(1) pH value is used to spray aluminium pot for 11.5 lye, then spray time 10min uses temperature for 60 DEG C
Hot water cleans tank body, after to be cleaned to neutral, dries after tank body is impregnated 1.5h in the acid that pH value is 4.5.
(2) inside courtyard is coated on to the inner surface of tank body, forms inner coating, wherein by weight, inside courtyard includes: magnesium
15 parts of powder, 5 parts of silica solution, 6 parts of vinyl silanes, 1 part of dipropylene glycol methyl ether, 8 parts of dimercapto 2-ethyl hexyl ethanoate stannous methide, benzene
15 parts of ethylene-acrylate copolymers lotion, 15 parts of isopropanol, 20 parts of ethylene glycol diglycidylether, 15 parts of water.Wherein, magnesium powder
Partial size be 300nm.
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight,
Rustproof lacquer includes: 50 parts of PTFE Ultramicro-powder, 15 parts of hydroxy-ethyl acrylate, 35 parts of butyl acetate.Wherein, the partial size of PTFE Ultramicro-powder
For 800nm.
Acid and alkali corrosion test is made to tank body handled by the technique in embodiment 1-4, the specific method is as follows: by tank interior
The acid solution that pH value is 3 or the aqueous slkali that pH value is 13 are held, stands and places 180d, is dried after then washing tank interior, is counted
Calculate the mass loss for impregnating front and back tank body, the results showed that, it is placing between 180d days, the tank body of each embodiment processing is without blistering
Or stripping phenomenon occurs, mass loss rate is below 0.1%, illustrates it with acid-alkali-corrosive-resisting performance.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of acid and alkali-resistance coating processing technology, the acid and alkali-resistance coating includes inner coating and external coating, which is characterized in that described
The processing technology of acid and alkali-resistance coating the following steps are included:
(1) tank body is successively cleaned using alkali and hot water, is dried after tank body is then impregnated 1-2h in acid, the material of the tank body
Including aluminium；The pH value of the alkali is 10-12, and the pH value of the acid is 3-5；
(2) inside courtyard is coated on to the inner surface of the tank body, forms inner coating, wherein by weight, the inside courtyard packet
Include: 15-25 parts of magnesium powder, 5-20 parts of silica solution, 5-15 parts of silane coupling agent, 0.5-2.5 parts of coalescing agent, dimercapto acetic acid is different pungent
5-8 parts of ester stannous methide, 5-20 parts of organic polymer emulsion, 15-40 parts of alcohols solvent, 5-20 parts of glycerol ether compound, water
5-25 parts；The partial size of the magnesium powder is 300-500nm；
(3) rustproof lacquer is coated on side of the inner coating far from tank inner surface, forms external coating, wherein by weight,
The rustproof lacquer includes: 40-60 parts of PTFE Ultramicro-powder, 10-20 parts of hydroxy-ethyl acrylate, 30-40 parts of organic solvent；The PTFE
The partial size of Ultramicro-powder is 500-800nm.
2. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: described internally coated with a thickness of 5-10
μm, the external coating with a thickness of 2-5 μm.
3. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (1), cleaned using alkali
It when tank body, is carried out using spray process, spray time 5-10min.
4. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (1), the hot water
Temperature is 60-80 DEG C.
5. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (2), the silane is even
Connection agent is one or more of amino silane, epoxy radicals silicone hydride, vinyl silanes, acyloxy silane and hydrosulphonyl silane.
6. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (2), the film forming is helped
Agent is propandiol butyl ether and/or dipropylene glycol methyl ether.
7. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: described organic high in step (2)
Molecule lotion is vinyl acetate copolymer emulsion and/or interpolymer latex of polystyrene and acrylic ester.
8. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (2), the alcohols is molten
Agent is one or more of n-butanol, isobutanol, isopropanol and ethyl alcohol.
9. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: in step (2), the glycerin ether
Class compound is trimethylolpropane triglycidyl ether, 1,4- butanediol diglycidyl ether and ethylene glycol diglycidylether
One or more of.
10. acid and alkali-resistance coating processing technology according to claim 1, it is characterised in that: described organic in step (3)
Solvent is one or more of butyl acetate, propylene glycol methyl ether acetate and dimethylbenzene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193702.9A CN109939908A (en) | 2019-03-14 | 2019-03-14 | Acid and alkali-resistance coating processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193702.9A CN109939908A (en) | 2019-03-14 | 2019-03-14 | Acid and alkali-resistance coating processing technology |
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| CN109939908A true CN109939908A (en) | 2019-06-28 |
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| CN201910193702.9A Pending CN109939908A (en) | 2019-03-14 | 2019-03-14 | Acid and alkali-resistance coating processing technology |
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| CN1771096A (en) * | 2003-05-09 | 2006-05-10 | 德古萨公司 | Corrosion protection on metals |
| CN101258265A (en) * | 2005-09-09 | 2008-09-03 | 东洋制罐株式会社 | Resin-coated seamless aluminum can and resin-coated aluminum alloy lid |
| CN103571305A (en) * | 2013-10-25 | 2014-02-12 | 中山大桥化工集团有限公司 | Epoxy-magnesium-rich coating and preparation method thereof |
| CN104804621A (en) * | 2015-04-30 | 2015-07-29 | 柳州玲通科技有限责任公司 | Anticorrosive coating |
-
2019
- 2019-03-14 CN CN201910193702.9A patent/CN109939908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1771096A (en) * | 2003-05-09 | 2006-05-10 | 德古萨公司 | Corrosion protection on metals |
| CN101258265A (en) * | 2005-09-09 | 2008-09-03 | 东洋制罐株式会社 | Resin-coated seamless aluminum can and resin-coated aluminum alloy lid |
| CN103571305A (en) * | 2013-10-25 | 2014-02-12 | 中山大桥化工集团有限公司 | Epoxy-magnesium-rich coating and preparation method thereof |
| CN104804621A (en) * | 2015-04-30 | 2015-07-29 | 柳州玲通科技有限责任公司 | Anticorrosive coating |
Non-Patent Citations (5)
| Title |
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| 石玉梅等: "《建筑涂料与涂装技术400问》", 31 March 1996, 化学工业出版社 * |
| 萧莹等: "《致富化工产品生产技术》", 31 August 1995, 安徽科学技术出版社 * |
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Application publication date: 20190628 |
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