CN1532233A - Anti-cracking powder putty - Google Patents
Anti-cracking powder putty Download PDFInfo
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- CN1532233A CN1532233A CNA03108740XA CN03108740A CN1532233A CN 1532233 A CN1532233 A CN 1532233A CN A03108740X A CNA03108740X A CN A03108740XA CN 03108740 A CN03108740 A CN 03108740A CN 1532233 A CN1532233 A CN 1532233A
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- powder
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- powder putty
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Abstract
The anti-cracking powder putty consists of polymer powder 3-4 wt%, cement 27-30 wt%, quartz powder 35-38 wt%, heavy calcium carbonate 30-33 wt%, regulator 0.3-0.5 wt%, powdered assistant 0.5-0.7 wt% and fiber 0.5-1.0 wt%. Before used, it is compounded with water in certain ratio to proper viscosity. The putty has high solid content and thus relatively great thickness in once painting, and the addition of reinforcing polyacrylonitrile fiber makes the putty possess raised anti-cracking performance.
Description
Technical field the present invention relates to a kind of building coating, especially a kind of anti-cracking powder putty of using of construction wall.
Background technology says that in a sense building coating is a kind of work in-process, is only final finished through the construction film forming attached to the coating on the basal plane.In this process, though putty is the supplementary material in the building coating coating process, it is in metope basic unit and play the vital role of bonding transition between filming, and is also bearing the important function that prevents metope cracking, the peeling of filming simultaneously.
At present there are a lot of problems in used wall surface putty on the external wall,, efflorescence easy to crack such as construction, batch scrapes thickness deficiency, seediness or the like, and the variation owing to temperature, humidity simultaneously produces cracking.These problems and then will cause the application metope disadvantages such as paint film to occur have had a strong impact on the quality of external wall.
Summary of the invention for fundamentally avoid the metope of application body of wall to ftracture, peeling, shedding and quality problems such as peel off, the selection of supplementary material---putty is very important.The invention discloses a kind of powder putty of anti-cracking, this putty has advantages such as thick matter, fast dried, easy polishing, strong adhesion, has strengthened its splitting resistance greatly; In addition, because this putty is pulverous, instant packed transportation is used simple.
This anti-cracking powder putty, it is by the polymer powder of the 3-4% of counting by weight percentage, the cement of 27-30%, the silica powder of 35-38%, the coarse whiting of 30-33%, the adjusting material of 0.3-0.5%, the powder auxiliary of 0.5-0.7%, 0.5-1.0%'s is fibrous.Being engaged to appropriate viscosity with water with certain proportion at the construction field (site) uses.
This anti-cracking powder putty of the present invention, wherein, polymer powder is the multipolymer of pulverous acrylate, this polymer powder is acrylate and the alkylmethacrylate polymer powder that obtains through particular processing technology, and emulsion binders such as pure third, phenylpropyl alcohol and vinegar third, vinegar uncle can be arranged.
Used filler wherein cement is the 425# white cement, and coarse whiting is the powder of 400#, and silica powder is the powder of 300#.
Used auxiliary agent is 60% dispersion agent and 40% defoamer.
Used adjusting material is the methylcellulose gum series products of molecular weight about 15000-30000.
Used fiber is that length is the polyacrylonitrile fibre of 1.0-3.0mm; The cross-sectional shape of this fiber is the peanut shape, vertically is the parallel cylindrical cylindricality, and length is the 0.5-12.0 millimeter, and fineness is the 1.5-2.5 dtex, and density is 1.18g/cm
3It is big to have fiber number, characteristics such as intensity height (tensile strength is more than 300Mpa), ductility good (limit elongation is 14-20%), good hydrophilic property, acid-alkali-corrosive-resisting, weathering resistance, photostabilization are good.
In preparation time,, each component of weighing successively fully mixes then and gets final product, and during site operation, is mixed to suitable working viscosity with water with certain proportion and just can criticizes and scraped.
Selected starting material in the prescription of the present invention, improved the solid content of finished product, added polyacrylonitrile simultaneously with strengthening action, these measures make the putty produce can guarantee that enough once criticizing scrape thickness, effectively prevent the putty layer cracking, and then reduced the probability of coating cracking, improved the quality of finishing system.Compare with traditional wall putty, the putty that uses this prescription to produce has packing and uses advantages such as simple, thick matter, moderate drying speed, easily polishing, strong adhesion, and environment friendly and pollution-free, can be widely used in the coating for wall surface finishing system, especially to the demanding place of splitting resistance.
Embodiment
Embodiment:
Prepare anti-cracking powder putty of the present invention according to above-described preparation method, its component concentration is as follows:
28% 425# white cement;
4% polymer powder WS73S (national starch);
32% 400# water-ground limestone;
34% 300# quartz sand;
0.3% dispersion agent 760 (Cognis);
0.2% defoamer 1922 (Cognis);
0.5% methyl cellulose ether (Bayer)
1.0% 2mm filamentary material (road prestige 2000).
At the construction field (site) above powder and water can be criticized with 2: 1 mixing and stirring and scraped.Use the scraper blade coating on the asbestos model putty for preparing, the putty sample of staple fibre is not added in contrast simultaneously, finds the model moderate drying speed of blade coating putty of the present invention, and without any cracking phenomena, grinability is good, and sticking power is good.This experimental result has illustrated that this powder putty has advantages such as easy polishing, strong adhesion, compares with traditional putty, and splitting resistance is obviously strengthened.And owing to be pulverous, it is simple and convenient that the packed and transported application all compares traditional putty, has wider application prospect.
Claims (9)
1. anti-cracking powder putty, it is by the polymer powder of the 3-4% of counting by weight percentage, the cement of 27-30%, the silica powder of 35-38%, the coarse whiting of 30-33%, the adjusting material of 0.3-0.5%, the powder auxiliary of 0.5-0.7% and 0.5-1.0%'s is fibrous.
2. anti-cracking powder putty according to claim 1 is characterized in that described polymer powder is the multipolymer of pulverous acrylate.
3. anti-cracking powder putty according to claim 1 is characterized in that described cement can be the 425# white cement,
4. anti-cracking powder putty according to claim 1 is characterized in that described coarse whiting can be the powder of 400#,
5. anti-cracking powder putty according to claim 1 is characterized in that described silica powder is the powder of 300#.
6. anti-cracking powder putty according to claim 1 is characterized in that, described auxiliary agent is 60% dispersion agent and 40% defoamer.
7. anti-cracking powder putty according to claim 1 is characterized in that described adjusting material can be the methylcellulose gum powder.
8. anti-cracking powder putty according to claim 1 is characterized in that, described fiber is that length is the polyacrylonitrile fibre of 1.0-3.0mm.
9. anti-cracking powder putty according to claim 8 is characterized in that the cross-sectional shape of this polyacrylonitrile fibre is the peanut shape, vertically is the parallel cylindrical cylindricality, and length is the 0.5-12.0 millimeter, and fineness is the 1.5-2.5 dtex, and density is 1.18g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03108740XA CN1532233A (en) | 2003-03-25 | 2003-03-25 | Anti-cracking powder putty |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03108740XA CN1532233A (en) | 2003-03-25 | 2003-03-25 | Anti-cracking powder putty |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1532233A true CN1532233A (en) | 2004-09-29 |
Family
ID=34283176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA03108740XA Pending CN1532233A (en) | 2003-03-25 | 2003-03-25 | Anti-cracking powder putty |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1532233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369857C (en) * | 2006-06-22 | 2008-02-20 | 上海交通大学 | Environmental protection type multi functional putty for scraping walls of architecture |
-
2003
- 2003-03-25 CN CNA03108740XA patent/CN1532233A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369857C (en) * | 2006-06-22 | 2008-02-20 | 上海交通大学 | Environmental protection type multi functional putty for scraping walls of architecture |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |