CN101250030B - Cement hydrophober and method for preparing same - Google Patents
Cement hydrophober and method for preparing same Download PDFInfo
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- CN101250030B CN101250030B CN2008100352664A CN200810035266A CN101250030B CN 101250030 B CN101250030 B CN 101250030B CN 2008100352664 A CN2008100352664 A CN 2008100352664A CN 200810035266 A CN200810035266 A CN 200810035266A CN 101250030 B CN101250030 B CN 101250030B
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Abstract
The invention provides a cement moisture repel and a process for preparation. The steps comprise heating higher fatty acid to melt, adding with emulsifying agent A, then adding basic compounds aqueous suspension to react in 1-4 hours with the temperature of 80-90 DEG C, adding with emulsifying agent B to stir and emulsify, and then obtaining the cement moisture repel, wherein the quality of addition of the emulsifying agent A is 0.5-5% of the quality of the basic compounds, the emulsifying agent B is 0.2-3% of the basic compounds, and the mol ratio of the higher fatty acid and the basic compounds is 1:0.5-2. The process for preparation of the invention is simple in process route, easy to obtain raw materials and low in cost, and has the advantages of small grain diameter, low viscosity, fine stability, low usage and excellent water resistance and hydrophobicity performance. Further, the cement moisture is provided with the excellent hydrophobicity performance in light-weight mixed concrete with air-bubble, simultaneously overcomes shortages of defoaming for the light-weight mixed concrete with air-bubble in the prior art.
Description
Technical field
The present invention relates to a kind of cement water repellent for building and preparation method thereof, be particularly useful for the cement water repellent in the bubble mixing light concrete.
Background technology
Anti-water, hydrophobic range of product for building on the market are various, and meal, paste, emulsion-type are arranged, and wherein receive an acclaim because of emulsion-type hydrophober is easy to use.
Waterproof, hydrophober generally are divided into two types: a kind of is non-response type, be blended in sand-cement slurry, concrete, the gypsum, its effective constituent and inorganics only are the mutual fillings of inert, machinery, the waterproof of this type, hydrophober large usage quantity, and effect is not lasting; Another kind of type is a response type, be between waterproof, hydrophobic effective constituent and the hydrated cementitious product chemical reaction to have taken place, formation is with the interface structure of chemical bond combination, strengthening the waterproof, the hydrophobicity performance that cause cement by the interface improves, this type waterproof, hydrophober consumption are less, effect obviously, lasting.
Zhang Jie is coated in sand-cement slurry, concrete, the gypsum outside by interior blending with the waterproof hydrophober of stearic acid, potassium hydroxide, trolamine, citric acid, organic silicone oil, emulsifying agent preparation in TECHNOLOGY (2004/7) " making of waterproof hydrophober ", waterproof, hydrophobic effect are better, but this waterproof hydrophober cost is higher, and is used in and has tangible froth breaking side effect in the bubble mixing light concrete.
Summary of the invention
The objective of the invention is to disclose a kind of cement water repellent and preparation method thereof, to overcome the above-mentioned defective that prior art exists.
The higher fatty acid heat temperature raising to fusing, is added emulsifying agent A, add the basic cpd aqeous suspension then, reacted 1～4 hour down, form water-in-oil emulsion at 80～90 ℃;
Add emulsifying agent B, stirred 1～3 hour, obtain emulsion oil-in-water, be cement water repellent; Emulsifying agent A add-on is 0.5～5% of a basic cpd quality;
The add-on of emulsifying agent B is 0.2～3% of a basic cpd quality;
The mol ratio of higher fatty acid and basic cpd is 1: 0.5～2.
Said higher fatty acid is the saturated or unsaturated fatty acids of C12～C30, preferably a kind of in lauric acid, stearic acid, triacontanoic acid or the palmitinic acid;
Said basic cpd is selected from a kind of of calcium hydroxide, magnesium hydroxide, zinc hydroxide, calcium oxide, magnesium oxide or zinc oxide;
In the said basic cpd aqeous suspension, the mass content of basic cpd is 1～15%;
Said emulsifying agent A is selected from a kind of in Witconol AL 69-66, polyoxyethylene-polyoxypropylene block co-polyether, fatty alcohol-polyoxyethylene ether or the Span60;
Said emulsifying agent B is selected from a kind of of polyoxyethylene sorbitan monostearate, alkylphenol polyoxyethylene or polyoxyethylene sorbitan monooleate;
Viscosity≤the 500cps of the cement water repellent of method for preparing, particle size range 20～200nm., weight solid content are 10～50%.
Synthetic cement water repellent of the present invention and preparation method thereof, operational path is simple, and starting material are easy to get, with low cost, compared with prior art, it is little that the present invention not only has a particle diameter, the advantage that viscosity is low, and having good stability, consumption is few, the advantage of waterproof hydrophobicity performance excellence.When especially in bubble mixing light concrete, having the hydrophobicity performance excellence, overcome in the prior art shortcoming to bubble mixing light concrete froth breaking.
Specific embodiment
Embodiment 1
In the four-hole boiling flask that has thermometer, add 100 gram lauric acid, be warming up to 85 ℃, after treating all to melt, stir and add 0.37 gram Witconol AL 69-66 down, then 74 gram calcium hydroxides are joined in the 1570.68 gram deionized waters and form suspension, join then in the flask, insulation reaction is after 1 hour, add 0.15 gram emulsifying agent polyoxyethylene octylphenol ether, continue to stir after 2 hours, be cooled to normal temperature, products obtained therefrom median size 20nm, viscosity 500cps, solid content 10%.Particle diameter testing method: JL-1155 type laser particle size distribution tests instrument; Viscosity: NDJ-1 type viscometer, 2# rotor 60rpm.
Embodiment 2
In the four-hole boiling flask that has thermometer, add 100 gram stearic acid, be warming up to 80 ℃, after treating all to melt, whipped state adds 0.1 gram emulsifying agent Span60 down, then 10.2 magnesium hydroxides are joined in the 331 gram deionized waters, form suspension, join in the flask, react after 2 hours, further add emulsifying agent polyoxyethylene sorbitan monooleate 0.1 gram, insulation reaction was cooled to normal temperature after 1 hour, products obtained therefrom median size 65nm, viscosity 250cps, solid content 25%.Testing method is with embodiment 1.
Embodiment 3
In the four-hole boiling flask that has thermometer, add 100 gram triacontanoic acids, be warming up to 90 ℃, after treating all to melt, whipped state adds 0.54 gram emulsifying agent polyethers L81 down, stir, 18 gram zinc oxide are joined 277 gram deionized waters join in the flask, reacted 3 hours, further add emulsifying agent polyoxyethylene sorbitan monostearate 0.36 gram, insulation reaction was cooled to room temperature after 3 hours, products obtained therefrom median size 120nm, viscosity 80cps, solid content 30%.Testing method is with embodiment 1.
Embodiment 4
In the four-hole boiling flask that has thermometer, add 100 gram palmitinic acids, be warming up to 87 ℃, after treating all to melt, whipped state adds 0.98 gram emulsifying agent fatty alcohol-polyoxyethylene ether down, stir, 19.6 gram calcium oxide are joined 121.17 gram deionized waters join in the flask, reacted 4 hours, further add polyoxyethylene nonylphenol ether 0.59 gram, insulation reaction was cooled to room temperature after 2.5 hours, products obtained therefrom median size 180nm, viscosity 20cps, solid content 50%.Testing method is with embodiment 1.
Application Example
Investigate product of the present invention and the water repelling property of contrast sample in bubble mixing light concrete.The contrast sample is according to the method preparation of Zhang Jie in TECHNOLOGY (2004/7) " making of waterproof hydrophober ".
Experimental installation: the bubble starter, Guansheng Construction New Technology Co., Ltd., Guangdong makes.
Experimentation is described: hydrophober is prepared, added to sand-cement slurry; Whipping agent foaming joins foam in the sand-cement slurry and to stir, and makes die trial, and maintenance is 28 days under the normal temperature condition, soaking vat is put in the die trial after 28 days soaked 7 days (dark 1 meter), measures water-intake rate, and other performances are measured in the die trial of end immersion.
The result is as shown in the table:
| The hydrophober numbering | Cement (gram) | Tap water (gram) | Hydrophober | Steam bubble (gram) | Design load (gram) | Become offset (gram) | Before the immersion (gram) | Immersion back (gram) | Suction one | Suction two |
| Embodiment-1 | 455 | 2600 | 0.8％ | 8.9 | 538 | 577 | 558.3 | 610.7 | 9.4％ | 13.5 ％ |
| Embodiment-2 | 455 | 2600 | 0.2％ | 8.9 | 537 | 555 | 534.7 | 585 | 9.4％ | 8.9％ |
| Embodiment-3 | 455 | 2600 | 0.5％ | 8.9 | 540 | 576 | 558 | 610 | 9.4％ | 13.0 ％ |
| Embodiment-4 | 455 | 2600 | 0.8％ | 8.9 | 543 | 576 | 554.3 | 615 | 10.9 ％ | 13.3 ％ |
| The contrast sample | 455 | 2600 | 0.8％ | 8.9 | 545 | 635 | 582 | 716 | 23％ | 25％ |
Illustrate: the preceding weight of soaking of the weight when becoming offset to be meant actual moulding, design load is meant the weight of design;
Quality * 100% before suction one=(quality before immersion back quality-immersion)/immersion
Suction two=(immersion back quality-design load quality)/design load quality * 100%
Judgment criteria: suction one and suction two all≤15% are superior prod.
Conclusion: according to the data in the above form as can be seen, product hygroscopicity value of the present invention is substantially all below 15%, and effect is better than the contrast sample.
Claims (6)
1. the preparation method of a cement water repellent is characterized in that, comprises the steps:
The higher fatty acid heat temperature raising to fusing, is added emulsifying agent A, add the basic cpd aqeous suspension then, reacted 1～4 hour down, form water-in-oil emulsion at 80～90 ℃;
Add emulsifying agent B, stirring and emulsifying 1～3 hour obtains described cement water repellent;
Emulsifying agent A add-on is 0.5～5% of a basic cpd quality;
The add-on of emulsifying agent B is 0.2～3% of a basic cpd quality;
The mol ratio of higher fatty acid and basic cpd is 1: 0.5～2;
Said emulsifying agent A is selected from a kind of in Witconol AL 69-66, polyoxyethylene-polyoxypropylene block co-polyether, fatty alcohol-polyoxyethylene ether or the Span60; Said emulsifying agent B is selected from a kind of of polyoxyethylene sorbitan monostearate, alkylphenol polyoxyethylene or polyoxyethylene sorbitan monooleate.
2. method according to claim 1 is characterized in that, said higher fatty acid is the saturated or unsaturated fatty acids of C12～C30.
3. method according to claim 1 is characterized in that, said higher fatty acid is selected from a kind of in lauric acid, stearic acid, triacontanoic acid or the palmitinic acid.
4. method according to claim 1 is characterized in that said basic cpd is selected from a kind of of calcium hydroxide, magnesium hydroxide, zinc hydroxide, calcium oxide, magnesium oxide or zinc oxide;
5. method according to claim 1 is characterized in that, in the said basic cpd aqeous suspension, the mass content of basic cpd is 1～15%.
6. according to the cement water repellent of each described method preparation of claim 1～5.
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| CN2008100352664A CN101250030B (en) | 2008-03-27 | 2008-03-27 | Cement hydrophober and method for preparing same |
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| CN2008100352664A CN101250030B (en) | 2008-03-27 | 2008-03-27 | Cement hydrophober and method for preparing same |
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| CN101250030A CN101250030A (en) | 2008-08-27 |
| CN101250030B true CN101250030B (en) | 2010-04-07 |
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| CN103911021B (en) * | 2013-01-06 | 2016-06-01 | 北京化工大学 | A kind of transparent magnesium hydroxide liquid dispersion and preparation method and application |
| CN107879658A (en) * | 2017-11-14 | 2018-04-06 | 潍坊友容实业有限公司 | The building materials of salt-soda soil feed ditch efficiency of construction can be improved |
| CN112047645A (en) * | 2020-09-01 | 2020-12-08 | 武汉思越化学技术有限公司 | Multifunctional water repellent for mineral fibers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442386A (en) * | 2002-03-06 | 2003-09-17 | 尚启水 | Grout, concrete waterproof agent and its manufacturing technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442386A (en) * | 2002-03-06 | 2003-09-17 | 尚启水 | Grout, concrete waterproof agent and its manufacturing technology |
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Effective date of registration: 20201013 Address after: 215000 Shengze Town, Wujiang District, Suzhou, Jiangsu Province, No. 1188 West No. two ring road Patentee after: Suzhou Shengze science and Technology Pioneer Park Development Co.,Ltd. Address before: 200235, room 2, building 100, 1107 Qinzhou Road, Shanghai, Xuhui District Patentee before: SHANDONG DONGSHENG NEW MATERIAL Co.,Ltd. |
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