CN102295851B - Alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions - Google Patents
Alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions Download PDFInfo
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- CN102295851B CN102295851B CN201110236396.6A CN201110236396A CN102295851B CN 102295851 B CN102295851 B CN 102295851B CN 201110236396 A CN201110236396 A CN 201110236396A CN 102295851 B CN102295851 B CN 102295851B
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Abstract
The invention discloses an alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions. The curing agent comprises ethyl silicate-40, absolute ethyl alcohol, deionized water, boron anhydrous, sodium fluosilicate, 20 percent of dilute phosphoric acid and acetic acid. The prepared alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent disclosed by the invention is a curing agent without chloride ions. The corrosion triggering factor is reduced. The salt spray resistance performance is greatly improved.
Description
Technical field
The present invention relates to not chloride ion-containing alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of one.
Background technology
Zinc-rich coating is generally divided into two kinds of the rich zinc of aqueous inorganic and alcohol dissolubility inorganic zinc-richs.
The rich zinc of aqueous inorganic is suitable for constructing under drying conditions, and harsher to construction environment requirement, difficulty of construction is higher, and alcohol dissolubility inorganic zinc-rich, by reacting and solidify with airborne water vapour, is especially applicable to the construction under south China super-humid conditions.At present, this priming paint develops into the inorganic paint of preservative property, weathering resistance, excellent heat resistance gradually.
Alcohol soluble inorganic zinc silicate anti-corrosive coating divides solidifying agent and two components of zinc slurry.Described zinc slurry is uniformly mixed and is formed by zinc powder, electric conductive dustproof pigment, host and alcoholic solvent, does not relate to chemical transformation.Described solidifying agent is taking alkyl silicate as starting raw material, at H
+under the effect of ion, hydrolysis generates silanol (Si-OH), between rear silanol, there is condensation reaction, form the tetraethyl silicate condenses with part of hydroxyl, when the tetraethyl silicate of partial hydrolysis is coated on steel surface, can further absorb airborne moisture and condensation cross-linking, and react with steel surface active iron and form zinc-silicic acid-iron complex, simultaneously also with the surface reaction of zinc particles, finally form the hard zinc silicate paint film of one deck.
CN 1887985A discloses a kind of environment-friendly type inorganic zinc silicate workplace primer, by base-material and solidifying agent by weight 0.5～3.5: 1 forms.Wherein, each component title and the parts by weight of base-material are respectively: propylene glycol monomethyl ether 7.0～15.0, modified alta-mud 0.3～0.8, hydroxy ethyl fiber cellulose solution 5.0～15.0, soybean lecithin dispersion agent 0.1～0.7, titanium dioxide 1.0～4.0, kaolin 2.0～15.0, talcum powder 3.0～16.0, ferrophosphorus powder 5.0～20.0, zinc powder 30.0～70.0.The each component title of solidifying agent and parts by weight are: dehydrated alcohol 20～45.0, propylene glycol monomethyl ether 10.0～40.0, hydrochloric acid soln 4.1～8.1, tetraethoxy 25.0～50.0.
CN 1908089A discloses a kind of environment-friendly type inorganic zinc silicate workplace primer, by base-material and solidifying agent by weight 0.5～3.5: 1 forms.Wherein, each component title and the parts by weight of base-material are respectively: propylene glycol monomethyl ether 7.0～15.0, modified alta-mud 0.3～0.8, hydroxy ethyl fiber cellulose solution 5.0～15.0, soybean lecithin dispersion agent 0.1～0.7, titanium dioxide 1.0～4.0, kaolin 2.0～15.0, talcum powder 3.0～16.0, ferrophosphorus powder 5.0～20.0, zinc powder 30.0～70.0; The each component title of solidifying agent and parts by weight are: dehydrated alcohol 20.0～45.0, propylene glycol monomethyl ether 10.0～40.0, hydrochloric acid soln 4.1～8.1, tetraethoxy 25.0～50.0.
CN 101619196A discloses a kind of high temperature resistant inorganic primer for zinc silicate shop of not containing benezene solvent, is made up of by weight 1: 1.5～4 solidifying agent and slurry; Wherein: the each composition title of solidifying agent and parts by weight are respectively ammoniacal liquor 0～2, sodium ethylate 0～2, Potassium monofluoride 0～2, tetraethyl silicate 15～50, AMP-950～2, sulfuric acid 0.05～1, coarse whiting 0～0.3, potassium hydroxide 0～0.5, distilled water 3～15, industrial alcohol 5～10, propylene glycol monomethyl ether 15～60, silicone resin 0～10.Adopt the priming paint heatproof of above-mentioned solidifying agent can reach 800 DEG C.
The solidifying agent production technique of prior art is to use hydrochloric acid catalysis silicate hydrolyzate, and add the auxiliary moisture absorption of a small amount of zinc chloride to solidify, but chlorion radius is little, penetrativity is strong, therefore it is easy to penetrate minimum hole in oxide film, arrive metallic surface, and form soluble compound with metal interaction, the structure of oxide film is changed.Simultaneously chlorion also have very strong can be by the ability of metal adsorption, they are preferentially by metal adsorption, and from metallic surface, oxygen are drained.
Because oxygen is determining the passive state of metal, adsorption site on chlorion and oxygen contention metallic surface, passivation ion and the metal that even can replace in absorption form muriate, and the absorption of muriate and metallic surface is also unstable, form soluble substance, so just caused the acceleration of corrosion.
Summary of the invention
One of object of the present invention is to provide a kind of alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of excellent performance.
One of object of the present invention is also the alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the not chloride ion-containing that a kind of excellent performance is provided.
The present invention is directed to the deficiencies in the prior art, the mechanism that causes corrosion to be accelerated from chlorion, by a series of screening experiments, finally selected rare H
3pO
4as hydrolyst, boric anhydride and Sodium Silicofluoride, as moisture absorption Curing material, have made the alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of excellent performance with acetic acid.
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, its composition comprises according to weight percent:
The each component sum of described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent is 100%.
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, its composition preferably includes according to weight percent:
The each component sum of described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent is 100%.
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, its composition is preferably according to weight percent:
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, its composition is preferably according to weight percent:
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, is preferably only grouped into by above-mentioned 7 kinds of one-tenth., alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, is preferably only made up of tetraethyl silicate-40, dehydrated alcohol, deionized water, boric anhydride, Sodium Silicofluoride, 20% dilute phosphoric acid and acetic acid.
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, not chloride ion-containing.
Tetraethyl silicate-40 of the present invention, another name ethyl silicate 40, tetraethoxy, English name is Ethyl silicate-40 or tetraethyl orthosilicate.Described tetraethyl silicate-40 are known product, and it can commercially availablely obtain, and also can obtain according to the preparation method of prior art/new technology, and the present invention no longer repeats with regard to its source.
Boric anhydride of the present invention, it is known product, its molecular formula is B
2o
3, molecular weight is about 69.62, and it can commercially availablely obtain, and also can obtain according to the preparation method of prior art/new technology, and the present invention no longer repeats with regard to its source.
Sodium Silicofluoride of the present invention, it is known product, Chinese another name: sodium hexafluorisilicate, English name is Sodiumfluorosilicate, Sodiumsilicofluorate or Sodiumhexafluorosilicate, its chemical formula is Na
2siF
6, relative molecular mass is about 188.06.It can commercially availablely obtain, and also can obtain according to the preparation method of prior art/new technology, and the present invention equally no longer repeats with regard to its source.
Dilute phosphoric acid of the present invention, preferred concentration is 10～30%, most preferable concentrations is 20%.Described concentration is weight percentage (being also mass percent), represents with wt%.
Alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, its preparation method can, according to prior art, be mixed to get by simple component.
The present invention is by selecting specific composition combination, i.e. rare H
3pO
4as hydrolyst, boric anhydride and Sodium Silicofluoride, as moisture absorption Curing material, have been realized the not alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of chloride ion-containing with acetic acid, and have improved the salt spray resistance of inorganic zinc silicate anti-corrosive coating.
Useful technique effect of the present invention is, the prepared alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, and not chloride ion-containing solidifying agent, it has reduced corrosion priming factors, and salt spray resistance improves a lot.
Embodiment
Embodiment mono-
Prepare alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent according to following component proportion, its composition according to weight percent is:
Embodiment bis-
Prepare alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent according to following component proportion, its composition according to weight percent is:
The preparation method of embodiment mono-and embodiment bis-is all method preparations of recording according to prior art, and described preparation method it will be apparent to those skilled in the art that and wants to know and can know.Typical but non-limiting preparation method is as simple hybrid technique.
The not chloride ion-containing of solidifying agent that more than formula makes, is equipped with classical chloride ion-containing solidifying agent the paint film that identical zinc slurry makes, and performance comparison is as follows:
| Chloride ion-containing | Not chloride ion-containing | |
| Zinc content in dry film | 40％ | 40％ |
| Dry film thickness (micron) | 45 | 45 |
| Shock-resistant (cm) | 50 | 50 |
| Sticking power (level) | 2 | 1 |
| Resistance to neutral salt spray | 500h is without obvious rust spot | 700h is without obvious rust spot |
Can verify by above-mentioned simultaneous test, not chloride ion-containing solidifying agent of alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent of the present invention, it has greatly reduced corrosion priming factors, and salt spray resistance is greatly improved compared to prior art, has obtained technically compared with quantum jump.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the each raw material of product of the present invention and the interpolation of ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (6)
1. an alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent, its composition comprises:
The each component sum of described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent is 100%;
Described dilute phosphoric acid concentration is 10～30wt%;
Described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent, not chloride ion-containing.
2. solidifying agent as claimed in claim 1, is characterized in that, the composition of described solidifying agent comprises:
The each component sum of described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent is 100%;
Described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent, not chloride ion-containing.
3. solidifying agent as claimed in claim 1, is characterized in that, the consisting of of described solidifying agent:
4. solidifying agent as claimed in claim 1, is characterized in that, the consisting of of described solidifying agent:
5. solidifying agent as claimed in claim 1 or 2, is characterized in that, described alcohol soluble inorganic zinc silicate anti-corrosive coating curing agent is only made up of tetraethyl silicate-40, dehydrated alcohol, deionized water, boric anhydride, Sodium Silicofluoride, 20wt% dilute phosphoric acid and acetic acid.
6. solidifying agent as claimed in claim 1, is characterized in that, described dilute phosphoric acid concentration is 20wt%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236396.6A CN102295851B (en) | 2011-08-16 | 2011-08-16 | Alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions |
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|---|---|---|---|
| CN201110236396.6A CN102295851B (en) | 2011-08-16 | 2011-08-16 | Alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions |
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| CN102295851A CN102295851A (en) | 2011-12-28 |
| CN102295851B true CN102295851B (en) | 2014-07-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725121B (en) * | 2013-12-11 | 2016-08-17 | 天津美士邦涂料化工有限公司 | A kind of High corrosion resistant shop primer |
| CN103725133B (en) * | 2013-12-11 | 2016-08-17 | 天津美士邦涂料化工有限公司 | A kind of preparation method of shop primer |
| CN106479250A (en) * | 2016-10-14 | 2017-03-08 | 成都蒲江珂贤科技有限公司 | A kind of alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent and preparation method thereof |
| CN108250869A (en) * | 2018-01-19 | 2018-07-06 | 金晓奕 | A kind of method of standard component salt fog resistance |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619195A (en) * | 2008-07-04 | 2010-01-06 | 上海暄洋化工材料科技有限公司 | High-temperature resistant workshop primer and preparation process thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619195A (en) * | 2008-07-04 | 2010-01-06 | 上海暄洋化工材料科技有限公司 | High-temperature resistant workshop primer and preparation process thereof |
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Denomination of invention: Alcohol-soluble inorganic zinc silicate anti-corrosive coating curing agent without chloride ions Effective date of registration: 20171108 Granted publication date: 20140702 Pledgee: Anhui rural commercial bank Limited by Share Ltd Pledgor: Anhui Province Jindun Paint Co., Ltd. Registration number: 2017340000334 |
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Date of cancellation: 20191015 Granted publication date: 20140702 Pledgee: Anhui rural commercial bank Limited by Share Ltd Pledgor: Anhui Province Jindun Paint Co., Ltd. Registration number: 2017340000334 |