CN85106772A - The manufacture method of washable and wiping-able sodium silicate inorganic coating for buildings - Google Patents
The manufacture method of washable and wiping-able sodium silicate inorganic coating for buildings Download PDFInfo
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- CN85106772A CN85106772A CN 85106772 CN85106772A CN85106772A CN 85106772 A CN85106772 A CN 85106772A CN 85106772 CN85106772 CN 85106772 CN 85106772 A CN85106772 A CN 85106772A CN 85106772 A CN85106772 A CN 85106772A
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Abstract
The present invention is the manufacture method of inorganic architectural coatings.
Water glass is cheap, good film-forming property, but poor water resistance.As 106 coating that make with water glass and polyvinyl alcohol scrubbing resistance not.The using silica-sol wash complex manufacturing costs an arm and a leg.With the phosphoric acid salt that contracts is that the sodium-potassium silicate coating of solidifying agent divides two-pack, matching while using, and construction is inconvenient.The present invention has overcome the shortcoming of above-mentioned existence.Add a small amount of composite assistant and filler with sodium silicate aqueous solution and make strong adhesion, hardness height, water-fast, scrubbing resistance, ageing-resistant, interior exterior wall water-soluble inorganic building coating that cost is low.
Description
The invention belongs to the manufacture method of novel scrubbing resistance inorganic architectural coatings.
Sodium silicate aqueous solution is cheap, good film-forming property.But the greatest problem that exists is a poor water resistance at present.Building coating with its system is not water-fast as 106, not scrubbing resistance, and unstable product quality.Occurred polyvinyl formal coating on the basis of 106 coating, performance is slightly improved than the former, but most of product scrub resistance is still undesirable.Over nearly one, two year, people are doing many work aspect the water glass water tolerance, for example, sodium silicate solution is made silicon solution by Zeo-karb, make coating again.This method is the concentration that sodium silicate solution is diluted to 4-10%, again about concentrating under reduced pressure to 30%, uses for system coating after the exchange.This method complex process, facility investment is big.Dilution, exchange, regeneration, concentrated a large amount of starting material, the moving fuel of all consuming.Silicon sol is in drying process in addition, and volumetric shrinkage is bigger, easily produces bad phenomenon such as be full of cracks.Therefore, all piece together during coating with the modification of organic polymer film forming matter in system, Zhi coating cost height like this, coating price costliness (about 3,000 yuan/ton) should not be extensive use of.In addition, the water glass coating that also has mineral acid (as sulfuric acid, hydrochloric acid) modification.Paint adhesion is reduced.Paint adhesion is bad, will lose practical value.Except that above-mentioned two kinds of methods, the sodium-potassium silicate coating of the also useful phosphate firming agent that contracts.This coating is two-pack, during construction, and matching while using, construction is inconvenient.In addition, the normal and polyacrylate dispersion assembly usefulness of this sodium-potassium silicate coating is to improve its fragility, in case be full of cracks.The water tolerance of this coating mainly is to utilize solidifying agent to solve.Thereby, the price of this coating also more expensive (about 1,700 yuan/ton).
In order to overcome above-mentioned shortcoming, present inventors have carried out a large amount of research and discussions, add the NEW PAINT SYSTEMS FOR BUILDINGS that composite assistant makes water-fast, scrubbing resistance, inexpensive (the low 2-3 of more above-mentioned like product price doubly) with sodium silicate solution finally.Feature of the present invention is to be weight concentration that 45～48 parts of 28～30% sodium silicate solutions mix with a small amount of composite assistant, makes the base-material of coating under normal temperature, normal pressure.Adding active filler, pigment then disperses to form through grinding.Used composite assistant is that first polyacrylic acid solution 5-10 part and urea 2-7 part of 5% are formed by weight concentration.This recombiner adds, and not only can make water glass coating have water-fast, scrubbing resistance, strong adhesion, hardness height, and manufacturing process is simple, easy construction, cheap.So this composite assistant only has above-mentioned effect, the reason first just polyacrylic acid not only has stronger acidity (PH=2-3), and general inorganic building material there is stronger sticking power, itself has snappiness again, it has the effect of sodium ion in the exchange water glass, and is difficult for producing gelatin phenomenon in the reaction process.Its chemical equation is:
It two is effects of another composition urea in the composite assistant, and urea can also make the crosslinked macromole that becomes three dimensional structure between inorganic macromole except that making the water glass tackify, and water-resistant coating, sticking power and scrub resistance are strengthened, and its chemical equation is:
Above-mentioned water tolerance, scrub resistance and sticking power are the coefficient results of composite assistant each component.The component of composite assistant is indispensable.Otherwise, bad, the poor adhesive force of the water tolerance of filming.For example, in sodium silicate solution, add 30 parts at the beginning of polyacrylic acid solution, and do not add urea, the coating that makes is tested, though that its result films is water insoluble, film adhesive is extremely low.Otherwise light adds urea and first polyacrylic acid solution, and identical result is also arranged.
For satisfying requirements such as water-resistant coating, scrub resistance, stability, flowability and sticking power, the present inventor has also done a large amount of experiments to each component concentration of composite assistant and the first polyacrylic polymerization degree and has groped.(specific requirement sees Table 1).Experimental results show that just polyacrylic content is advisable between 5-10%.Its content is less than 5% or all influential greater than 10% pair of above-mentioned requirements.Its polymerization degree is advisable between 3-4.When the polymerization degree equaled 6, the viscosity of this coating will be 2 times of 4 increases than the polymerization degree, makes that coating brushing performance is bad.If the polymerization degree is less than 3, effect is also bad, and the levelling property of coating is poor, and this mainly is that π key in the vinylformic acid causes.Content of urea is advisable at 2-7%.Its content is greater than 7%, and is economical inadequately; Will influence water tolerance and scrub resistance and sticking power etc. less than 2%.
The shelf-time of (performance sees Table 3) customer requirements coating is long as much as possible except every performance of coating itself.The base-material of the coating that makes with present method, by viscosimetric analysis repeatedly, three middle of the month its base-material viscosity do not have considerable change.This explanation is when sealing is preserved, and this coating is stable.The fact also is like this, has deposited so far more than 4 months with the coating that this base-material is produced, and every index does not have considerable change.
The manufacture method of washable and wiping-able sodium silicate inorganic coating for buildings.
This method for producing paint is simple, facility investment is little, as long as 1-2 platform stirred pot can be produced in batches.During manufacturing, take by weighing each component, under stirring urea is added in the sodium silicate solution by table 1 proportioning, add polyacrylic acid solution just again, stir, add various fillers and pigment again, stir, grind the fineness that is distributed to requirement and can pack warehouse-in after by table 3 requirement quality inspection.
Coating formula table 1
The powder fineness will be more than 280 orders in the table, and whiteness is greater than 80.
Example formulations table 2
The technical indicator table 3 of rubbing-resistant paint
Reference:
1, coating test method, first, second (national standard).
2, Changsha urban construction scientific research institution, the building coating method of inspection (draft).1984.12。
3, Anhui Province's company standard Anhui Q/JC07-84, " interior wall rubbing-resistant paint ", Anhui Province bureau of standard measurement publishes, and 1984.
4, Anhui Province's company standard Anhui Q/JC05-84, " inorganic exterior coating ", Anhui Province bureau of standard measurement publishes.1984。
5, artillery ordnance institute, the 43rd institute of the Ministry of Electronics Industry, 47-55,74 76,78,80,81,82,87,121 experimental records, 1985.
6, Japanese publication, class-mark: CO9G1/02, clear 52-34928 application: 1977.3.28 announces: 1978.10.19
7, Japanese publication, class-mark: C09J1/02, clear 53-83457 application: 1978.7.7 announces: 1980.1.23
8, United States Patent (USP): 4,313,861
9, the big gloomy English three of Japan, acrylate and polymkeric substance thereof, Chemical Industry Press.
1974.7。
10, the precious a kind of jade of Chinese Wu, Lu Zhang, Lian Huizhen, material of construction chemistry, China Construction Industry Press, 1984.6.
11, Chinese inscription on ancient bronze objects is hidden, molding sand chemistry, Shanghai science tech publishing house.1984.3
12, Chinese Liu Hui, water glass are the novel stiffening agent of inorganic architectural coatings, coatings industry,
〔4〕，9（1984）。
13, the old sight of China unit, the influence that the solution pH value adsorbs impurity to silicate gel, inorganic chemicals industry, (1), and 28(1985), inorganic chemicals industry press of the Ministry of Chemical Industry.
14, Chinese money is cherished, and non-pressure process is produced the research of silicon sol, inorganic chemicals industry, (3), and 18(1985), inorganic chemicals industry press of the Ministry of Chemical Industry.
15, Chinese younger brother's Peng base, Dai Jiaqi, the preparation of silicon sol and application, inorganic chemicals industry.(5), 39-41(1982), inorganic chemicals industry press of the Ministry of Chemical Industry.
16, Chinese Chen Jia hardwood is brief talked the current situation and development of building coating, coatings industry, (5), and 47(1984), inorganic chemicals industry press of the Ministry of Chemical Industry.
17, Xibei (Northwest) Paint Factory, acrylic latex coating technical indicator, 1985.5.
18, Beijing Red Star building coating factory, JH80-1, JH-82 type inorganic architectural coatings product description, 1985.
19, Tianjin building coating factory, TJW-3 potassium silicate exterior coating working instructions, 1985.
Claims (3)
1, washable and wiping-able sodium silicate inorganic coating for buildings is to add a small amount of composite assistant, active filler, physique filler with 28～30% sodium silicate solution to mix, and disperses to form through grinding.Its feature:
A, described composite assistant are made up of 5% first polyacrylic acid solution and urea.
B, active filler are zinc oxide.
C, physique filler are: zinc sulfide white, fine particle calcium carbonate, talcum powder, ground dolomite, silica powder, mica powder.
2, according to claim 1, sodium silicate solution is got 45-48 part; First polyacrylic acid solution 5-10 part, urea 2-7 part.
3, according to claim 1,2 described, urea is joined in the sodium silicate solution, under agitation add polyacrylic acid solution just, add filler again and fully stirred 40 minutes, grind through colloidal mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85106772A CN85106772B (en) | 1985-09-07 | 1985-09-07 | Process for production of washable and wiping-able sodium silicate inorganic coating for buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85106772A CN85106772B (en) | 1985-09-07 | 1985-09-07 | Process for production of washable and wiping-able sodium silicate inorganic coating for buildings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85106772A true CN85106772A (en) | 1987-05-13 |
| CN85106772B CN85106772B (en) | 1987-08-26 |
Family
ID=4795276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85106772A Expired CN85106772B (en) | 1985-09-07 | 1985-09-07 | Process for production of washable and wiping-able sodium silicate inorganic coating for buildings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85106772B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007085201A1 (en) * | 2006-01-27 | 2007-08-02 | Haolong Zhang | Aqueous coating and method for preparing the same |
| CN100386394C (en) * | 2004-08-25 | 2008-05-07 | 姚惠渥 | Environmental protection inorganic paint |
| CN101985530A (en) * | 2010-05-22 | 2011-03-16 | 袁雪祥 | Water-based inorganic iron oxide red antirust coating and preparation method thereof |
-
1985
- 1985-09-07 CN CN85106772A patent/CN85106772B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386394C (en) * | 2004-08-25 | 2008-05-07 | 姚惠渥 | Environmental protection inorganic paint |
| WO2007085201A1 (en) * | 2006-01-27 | 2007-08-02 | Haolong Zhang | Aqueous coating and method for preparing the same |
| CN101985530A (en) * | 2010-05-22 | 2011-03-16 | 袁雪祥 | Water-based inorganic iron oxide red antirust coating and preparation method thereof |
| CN101985530B (en) * | 2010-05-22 | 2012-10-24 | 袁雪祥 | Water-based inorganic iron oxide red antirust coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85106772B (en) | 1987-08-26 |
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