CN1676551A - Method for preparing high modulus potassium metasilicate solution for coating - Google Patents
Method for preparing high modulus potassium metasilicate solution for coating Download PDFInfo
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- CN1676551A CN1676551A CN 200410022168 CN200410022168A CN1676551A CN 1676551 A CN1676551 A CN 1676551A CN 200410022168 CN200410022168 CN 200410022168 CN 200410022168 A CN200410022168 A CN 200410022168A CN 1676551 A CN1676551 A CN 1676551A
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- potassium silicate
- potassium
- distilled water
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- nano silicon
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Abstract
This invention provides a making method of high modulus potassium metalsilicate solution for coating use. The proportions of raw materials are: 3.2-3.5-module potassium metalsilicate 40-62, nano silica 5-11, distilled water 20-50. The preparation procedure is: pre-heat potassium metalsilicate to 60-70deg.C and fully mix round; add distilled water into the nanometer silica and wet the nanometer silica; mix round at 4500 turn/min high speed to add wet silica into potassium metalsilicate agent, and continue stir for 2-4 hours under 60-70deg.C; at last add slowly the excessive distilled water, use 10% potassium hydroxide to adjust its Ph value to 12-13 to get colorless, stably storing high modulus potassium metalsilicate agent. This invention is used as bond for water inorganic potassium salt rich zinc coating.
Description
Technical field
The invention provides a kind of preparation method of potassium silicate solution, particularly relate to the preparation method of a kind of coating with the high-module potassium silicate solution.
Background technology
The fast-drying aqueous inorganic silicate zinc-rich paint of room temperature at home and abroad is used widely in the large-scale steel structure long-effective corrosion engineering because of its excellent performance, its used binding agent is a silicate solutions, and silicon oxide in the silicate solutions and alkali-metal mol ratio (abbreviation modulus) directly influence snappiness, water tolerance, preservative property, set time and the sticking power etc. of zinc-rich anti-corrosive paint.And common its modulus of commercially available potassium silicate solution is lower, and modulus is generally 3.2～3.5, can not satisfy the requirement of aqueous inorganic silicate zinc-rich paint to binding agent.At present, one of method for preparing the high-module potassium silicate solution is to add precipitated silica, as Chinese patent CN1254736A, this method has improved the mol ratio of potassium silicate solution theoretically, but material therefor is a particle diameter is 1.5～120 microns precipitated silica, the dissolving difficulty, products therefrom is a kind of not dissolve silica particulate liquid that contains in a large number, do not reach the purpose of high-module potassium silicate solution truly, therefore, the coating made from the low modulus potassium silicate of its coating made and usefulness is compared and be there is no substantial improvement; Another kind method is to add the silicon gel in common commercially available potassium silicate solution, though improved the modulus of potassium silicate solution, but the silicon oxide particle that contains a large amount of nanoscales in the solution of this method preparation, make its package stability poor, a little less than the zinc powder covering property, easy to crack by the zinc-rich paint coating that this binding agent is made, low with metal sticking power, thick being coated with property is poor.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of silica dioxide granule or solid oxidation silicon of not containing fully is provided, water white transparency, and modulus reaches 5.1～5.6 the coating preparation method with the high-module potassium silicate solution.
The coating of the present invention proportioning of the raw materials used component of preparation method of high-module potassium silicate solution, the % meter is modulus 3.2～3.5 potassium silicate solutions 40～62, nano silicon 5～11, distilled water 20～50 by weight.Wherein, the nano silicon median size is generally less than 50 nanometers, preferably less than 10 nanometers.The operation steps of its preparation method is as follows:
1) potassium silicate solution is preheated to 60～70 ℃ in reactor, keeps rotating speed fully to stir for 500～2500 rev/mins;
2) nano silicon is added in the distilled water, the maintenance rotating speed stirred 0.5～1 hour for 150～500 rev/mins, left standstill to make nano silicon fully wetting in 2～3 hours;
3) rotating speed more than or equal to 4500 rev/mins high-speed stirring under, in 1.5～4 hours, slowly add step 2) nano silicon of gained, and under 60～70 ℃ of temperature, continue to stir, insulation 2～4 hours;
4) stir and slowly to add remaining distilled water down, with weight % concentration be 10% potassium hydroxide solution to adjust its pH value be 12～13, get water white high-module potassium silicate solution.Its performance index are as shown in table 1.
Table 1: the performance of high-module potassium silicate solution of the present invention:
| Outward appearance | Colourless, clear solution |
| Proportion | ????1.2～1.3 |
| Viscosity (be coated with-4 glasss/s) | ????12～14 |
| PH value | ????12～13 |
| Solid content | ????21～29％ |
| Modulus | ????5.1～5.6 |
Embodiment
Embodiment 1:
Material component:
Modulus 3.5 potassium silicate solutions (solid content 35%) 52.5 grams
Nano silicon (median size 15 nanometers) 7.5 grams
Distilled water 40.0 grams
Preparation:
1) potassium silicate solution is preheated to 66 ℃ in reactor, keeps rotating speed fully to stir for 2500 rev/mins;
2) silicon-dioxide is added in the part distilled water, stir down in 500 rev/mins rotating speeds and left standstill 2 hours in 0.5 hour, make nano silicon fully wetting;
3) under 4500 rev/mins rotating speed, slowly add wetting nano silicon, in 2 hours, add, continue to stir and under 60～65 ℃ temperature, be incubated 2 hours;
4) stir down the slowly remaining distilled water of adding, adjusting its pH value with 10% potassium hydroxide is 12, gets water white transparency high-module potassium silicate solution.Its performance index are as shown in table 2.
Table 2: the performance of high-module potassium silicate solution of the present invention:
| Outward appearance | Colourless, clear solution |
| Proportion | ????1.24 |
| Viscosity (be coated with-4 glasss/s) | ????14 |
| PH value | ????12 |
| Solid content | ????26％ |
| Modulus | ????5.6 |
Zinc powder with 6 microns of above-mentioned high-module potassium silicate solution and fineness mixed by weight 1: 3, left standstill after stirring 15 minutes, be coated in through sandblasting to surperficial Sat2.5 level, the steel surface that surfaceness is 55 microns, 15 minutes surface dryings of coating were done solid work in 24 hours, zinc content is greater than 92% in the coating, sticking power 5.6Mpa (drawing back method), by 5000 hours salt-fog tests (GB/T1771-1991), can be as anticorrosion of steel structure layer life-time service under-40～400 ℃.
Embodiment 2:
Material component:
Modulus 3.2 potassium silicate solutions (solid content 36%) 53.0 grams
Nano silicon (median size is less than 10 nanometers) 6.0 grams
Distilled water 41.0 grams
Preparation:
1) potassium silicate solution is preheated to 70 ℃ in reactor, keeps rotating speed fully to stir for 1500 rev/mins;
2) silicon-dioxide is added in the part distilled water, stir down in 500 rev/mins rotating speeds and left standstill 2.5 hours in 1 hour, make nano silicon fully wetting;
3) under 6000 rev/mins rotating speed, slowly add wetting nano silicon, in 1.5 hours, add, continue to stir and under 65～70 ℃ temperature, be incubated 3 hours;
4) stir down the slowly remaining distilled water of adding, adjusting its pH value with 100% potassium hydroxide is 13, gets water white transparency high-module potassium silicate solution.Its performance index are as shown in table 3.
Table 3: the performance of high-module potassium silicate solution of the present invention:
| Outward appearance | Colourless, clear solution |
| Proportion | ????1.21 |
| Viscosity (be coated with-4 glasss/s) | ????12 |
| PH value | ????13 |
| Solid content | ????24％ |
| Modulus | ????5.2 |
Zinc powder with 7 microns of above-mentioned high-module potassium silicate solution and fineness mixed by weight 1: 3, left standstill after stirring 20 minutes, be coated in through sandblasting to surperficial Sat2.5 level, the steel surface that surfaceness is 67 microns, 15 minutes surface dryings of coating were done solid work in 24 hours, zinc content is greater than 91.2% in the coating, sticking power 6.1Mpa (drawing back method), by 5000 hours salt-fog tests (GB/T1771-1991), can be as anticorrosion of steel structure layer life-time service under-40～400 ℃.
Claims (2)
1, a kind of coating is with the preparation method of high-module potassium silicate solution, and the proportioning that it is characterized in that feed composition % meter by weight is, modulus 3.2～3.5 potassium silicate solutions 40～62, and nano silicon 5～11, distilled water 20～50, its operation steps is as follows:
1) potassium silicate solution is preheated to 60～70 ℃ in reactor, keeps rotating speed fully to stir for 500～2500 rev/mins;
2) distilled water is added in the nano silicon, the maintenance rotating speed stirs after 0.5～1 hour for 150～500 rev/mins, leaves standstill to make nano silicon fully wetting in 2～3 hours;
3) rotating speed greater than 4500 rev/mins high-speed stirring under, in 1.5～4 hours, slowly add step 2) nano silicon of gained, and under 60～70 ℃ of temperature, continue to stir, insulation 2～4 hours;
4) stir down the slowly remaining distilled water of adding, adjusting its pH value with the potassium hydroxide solution of concentration expressed in percentage by weight 10% is 12～13, gets water white transparency high-module potassium silicate solution.
2, the coating as claimed in claim 1 preparation method of high-module potassium silicate solution, the particle diameter that it is characterized in that nano silicon is less than 50nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100221689A CN1297614C (en) | 2004-03-30 | 2004-03-30 | Method for preparing high modulus potassium metasilicate solution for coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100221689A CN1297614C (en) | 2004-03-30 | 2004-03-30 | Method for preparing high modulus potassium metasilicate solution for coating |
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| Publication Number | Publication Date |
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| CN1676551A true CN1676551A (en) | 2005-10-05 |
| CN1297614C CN1297614C (en) | 2007-01-31 |
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| CNB2004100221689A Expired - Fee Related CN1297614C (en) | 2004-03-30 | 2004-03-30 | Method for preparing high modulus potassium metasilicate solution for coating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004393A (en) * | 2014-03-18 | 2014-08-27 | 重庆艾普化工有限公司 | Water-based inorganic zinc-rich anticorrosive paint and preparing method of high-modulus potassium silicate solution |
| CN104386983A (en) * | 2014-10-28 | 2015-03-04 | 南京工业大学 | Water-tolerant silicate coating and preparation method thereof |
| CN104927410A (en) * | 2015-05-19 | 2015-09-23 | 重庆艾普防腐技术有限公司 | High-corrosion-resistance water-based workshop primer |
| US9776913B2 (en) | 2013-08-01 | 2017-10-03 | Corning Incorporated | Methods and apparatus providing a substrate having a coating with an elastic modulus gradient |
| CN111333075A (en) * | 2018-12-18 | 2020-06-26 | 国家能源投资集团有限责任公司 | High-modulus liquid potassium silicate, preparation method and application thereof, Fischer-Tropsch synthesis catalyst and preparation method thereof |
| CN113801504A (en) * | 2021-10-25 | 2021-12-17 | 华麟海(海南)新材料科技有限公司 | Tough anti-permeability antifouling water-based silicate coating for seawater tidal range zone and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4132169A (en) * | 1970-11-06 | 1979-01-02 | Beech Aircraft Corporation | Fuel-air type bomb |
| CN1074439C (en) * | 1999-03-16 | 2001-11-07 | 崔悦 | Anticorrosion paint |
| CN1215140C (en) * | 2003-06-02 | 2005-08-17 | 海洋化工研究院 | Synthesis of high-molar ratio potassium silicate adhesive and aqueous anticorrosive paint composition |
-
2004
- 2004-03-30 CN CNB2004100221689A patent/CN1297614C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9776913B2 (en) | 2013-08-01 | 2017-10-03 | Corning Incorporated | Methods and apparatus providing a substrate having a coating with an elastic modulus gradient |
| CN104004393A (en) * | 2014-03-18 | 2014-08-27 | 重庆艾普化工有限公司 | Water-based inorganic zinc-rich anticorrosive paint and preparing method of high-modulus potassium silicate solution |
| CN104386983A (en) * | 2014-10-28 | 2015-03-04 | 南京工业大学 | Water-tolerant silicate coating and preparation method thereof |
| CN104927410A (en) * | 2015-05-19 | 2015-09-23 | 重庆艾普防腐技术有限公司 | High-corrosion-resistance water-based workshop primer |
| CN111333075A (en) * | 2018-12-18 | 2020-06-26 | 国家能源投资集团有限责任公司 | High-modulus liquid potassium silicate, preparation method and application thereof, Fischer-Tropsch synthesis catalyst and preparation method thereof |
| CN111333075B (en) * | 2018-12-18 | 2022-04-19 | 国家能源投资集团有限责任公司 | High-modulus liquid potassium silicate, preparation method and application thereof, Fischer-Tropsch synthesis catalyst and preparation method thereof |
| CN113801504A (en) * | 2021-10-25 | 2021-12-17 | 华麟海(海南)新材料科技有限公司 | Tough anti-permeability antifouling water-based silicate coating for seawater tidal range zone and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1297614C (en) | 2007-01-31 |
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Granted publication date: 20070131 Termination date: 20110330 |