CN105366987A - Water repellent agent for foam concrete - Google Patents
Water repellent agent for foam concrete Download PDFInfo
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- CN105366987A CN105366987A CN201510827487.5A CN201510827487A CN105366987A CN 105366987 A CN105366987 A CN 105366987A CN 201510827487 A CN201510827487 A CN 201510827487A CN 105366987 A CN105366987 A CN 105366987A
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- China
- Prior art keywords
- foamed concrete
- hydrophober
- silane
- foam concrete
- fluorocarbon resin
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Abstract
The invention relates to the technical field of building materials, and aims at providing a water repellent agent for foam concrete. The water repellent agent for the foam concrete is composed of the following components by the weight percentage: 5-10% of a fluorocarbon resin emulsion, 10-20% of a styrene-acrylic emulsion, 1-5% of a silane coupling agent, 0.1-0.5% of a surfactant, 0.2-0.5% of a film-forming auxiliary agent, and 65-80% of water. With utilization of strong hydrophobic properties of fluorocarbon resin, the water repellent agent for the foam concrete is developed through formula design. The product is permeated to flaky or bulk foam concrete by a soaking or spraying way, the water absorption rate of the foam concrete is decreased significantly, and at the same time, the influence on other properties of the foam concrete is low.
Description
Technical field
The invention belongs to building materials technology field, be specifically related to a kind of foamed concrete hydrophober.
Background technology
Foamed concrete has the advantages such as lightweight, heat-insulation and heat-preservation, fire prevention, easy construction, the feature of environmental protection be good, is widely used in the engineering such as architectural exterior insulation, fire-blocking belt.But because it has comparatively high water absorbing capacity, easily cause thermal conductivity to rise, easily occur the bad phenomenon such as cracking, hollowing when heat-insulating property declines and mortar is smeared on surface, therefore need to carry out hydrophobic process to foamed concrete.At present, the main method being used for improving foamed concrete hydrophobicity performance adds hydrophober in foamed concrete preparation process.But, current commercially available hydrophober adopts silane to be main component usually, due to this composition and the incompatible feature of cement composition, can have a negative impact after a procedure to performances such as foamed concrete ultimate compression strength, dry densities, hydrophobicity performance increase neither be clearly simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, provides a kind of foamed concrete hydrophober.
For technical solution problem, solution of the present invention is as follows:
A kind of foamed concrete hydrophober is provided, is made up of the component of following weight per-cent: fluorocarbon resin emulsion 5 ~ 10%, benzene emulsion 10 ~ 20%, silane coupling agent 1 ~ 5%, tensio-active agent 0.1 ~ 0.5%, film coalescence aid 0.2 ~ 0.5%, water 65 ~ 80%.
In the present invention, described silane coupling agent is tetraethoxy, methyltrimethoxy silane, Union carbide A-162, n-propyl triethoxyl silane, dodecyl Trimethoxy silane, APTES, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane, gamma-mercaptopropyltriethoxysilane, vinyltrimethoxy silane, vinyl three ('beta '-methoxy oxyethyl group) silane, two-(trimethoxy-silylpropyl) amine, two-(triethoxysilylpropyltetrasulfide) amine, two (trimethoxy the is silica-based) ethane of 1,2-, 3,3,3-trifluoro propyl triethoxyl silane, or at least one in ten difluoro heptyl propyl trimethoxy silicanes.
In the present invention, described glass or plastic containers or anion surfactant.
In the present invention, described film coalescence aid is the one in alcohol, alcohol ester, alcohol ether or alcohol ether-ether.
In the present invention, mass content >=10% of the fluorine in described fluorocarbon resin emulsion.
Benzene emulsion is commercially available Building class benzene emulsion.
In the present invention, described tensio-active agent is alkylphenol polyoxyethylene or polyoxyethylene sorbitan monooleate.
In the present invention, described film coalescence aid is Lauryl Alcohol ester or butyl glycol ether.
The preparation preparation process of foamed concrete hydrophober of the present invention is: join in high speed dispersor by all raw materials, stirs 30 ~ 60 minutes, namely obtain foamed concrete hydrophober product with the speed of 800 ~ 1000 revs/min.
The using method of product in the present invention:
Foamed concrete hydrophober is penetrated in the foamed concrete of sheet or bulk in the mode of soaking or spray.If employing immersion way, soak time is 10 ~ 30min; If employing spray pattern, sprinkling consumption is 0.2 ~ 0.5kg/m
2; After to be dried, treated foamed concrete can be used for the engineering such as architectural exterior insulation, fire-blocking belt.After process, the saturated water absorption of foamed concrete can reduce by 20% ~ 80%.
Inventive principle describes:
The present invention utilizes the strong-hydrophobicity energy of fluorocarbon resin, with fluorocarbon resin emulsion for important source material, and in conjunction with benzene emulsion and other functional agent, can significantly reduce foamed concrete water-intake rate.Hydrophober of the present invention penetrates in foamed concrete by soaking or spraying, instead of add in foamed concrete preparation process.The object done like this to reduce foamed concrete water-intake rate, do not have a negative impact again to foamed concrete mechanical property, heat-insulating property.After the drying, saturated water absorption can effectively reduce treated foamed concrete, thus improves foamed concrete heat-insulating property in use, anti-freezing property and workability.
Relative to prior art, beneficial effect of the present invention is:
The present invention utilizes fluorocarbon resin strong-hydrophobicity energy, develops a kind of foamed concrete hydrophober through formulating of recipe.This product is penetrated in the foamed concrete of sheet or bulk by immersion or spray pattern, significantly reduces foamed concrete water-intake rate, simultaneously little to other performance impact of foamed concrete.
Embodiment
Embodiment 1
A kind of foamed concrete hydrophober, be made up of the component of following weight per-cent: fluorocarbon resin emulsion (Oil repellent >=10%) 5%, benzene emulsion (Building class) 10%, γ-glycidyl ether oxygen propyl trimethoxy silicane 5%, alkylphenol polyoxyethylene 0.1%, Lauryl Alcohol ester 0.2%, water 79.7%.Preparation method is: join in high speed dispersor by all raw materials, stir speed (S.S.) 800 revs/min, stirs 60 minutes.
By immersion way just hydrophober penetrate in foamed concrete, soak time 10min, after to be dried, foamed concrete saturated water absorption decline 30%.
Penetrate in foamed concrete by spray pattern by hydrophober, sprinkling consumption is 0.2kg/m
2, after to be dried, foamed concrete saturated water absorption declines 20%.
Embodiment 2
A kind of foamed concrete hydrophober, be made up of the component of following weight per-cent: fluorocarbon resin emulsion (Oil repellent >=10%) 10%, benzene emulsion (Building class) 20%, γ-(methacryloxypropyl) propyl trimethoxy silicane 4.7%, alkylphenol polyoxyethylene 0.1%, Lauryl Alcohol ester 0.2%, water 65%.Preparation method is: join in high speed dispersor by all raw materials, stir speed (S.S.) 800 revs/min, stirs 60 minutes.
By immersion way just hydrophober penetrate in foamed concrete, soak time 10min, after to be dried, foamed concrete saturated water absorption decline 70%.
Penetrate in foamed concrete by spray pattern by hydrophober, sprinkling consumption is 0.2kg/m
2, after to be dried, foamed concrete saturated water absorption declines 50%.
Embodiment 3
A kind of foamed concrete hydrophober, be made up of the component of following weight per-cent: fluorocarbon resin emulsion (Oil repellent >=10%) 8%, benzene emulsion (Building class) 15%, γ-glycidyl ether oxygen propyl trimethoxy silicane 2%, γ-(methacryloxypropyl) propyl trimethoxy silicane 3%, polyoxyethylene sorbitan monooleate 0.5%, butyl glycol ether 0.5%, water 71%.Preparation method is: join in high speed dispersor by all raw materials, stir speed (S.S.) 1000 revs/min, stirs 30 minutes.
By immersion way just hydrophober penetrate in foamed concrete, soak time 30min, after to be dried, foamed concrete saturated water absorption decline 80%.
Penetrate in foamed concrete by spray pattern by hydrophober, sprinkling consumption is 0.5kg/m
2, after to be dried, foamed concrete saturated water absorption declines 65%.
Embodiment 4
A kind of foamed concrete hydrophober, be made up of the component of following weight per-cent: fluorocarbon resin emulsion (Oil repellent >=10%) 8%, benzene emulsion (Building class) 20%, γ-glycidyl ether oxygen propyl trimethoxy silicane 1%, polyoxyethylene sorbitan monooleate 0.3%, butyl glycol ether 0.3%, water 70.4%.Preparation method is: join in high speed dispersor by all raw materials, stir speed (S.S.) 900 revs/min, stirs 50 minutes.
By immersion way just hydrophober penetrate in foamed concrete, soak time 20min, after to be dried, foamed concrete saturated water absorption decline 75%.
Penetrate in foamed concrete by spray pattern by hydrophober, sprinkling consumption is 0.4kg/m
2, after to be dried, foamed concrete saturated water absorption declines 55%.
Embodiment 5
A kind of foamed concrete hydrophober, be made up of the component of following weight per-cent: fluorocarbon resin emulsion (Oil repellent >=10%) 8.4%, benzene emulsion (Building class) 10%, γ-glycidyl ether oxygen propyl trimethoxy silicane 1%, polyoxyethylene sorbitan monooleate 0.3%, butyl glycol ether 0.3%, water 80%.Preparation method is: join in high speed dispersor by all raw materials, stir speed (S.S.) 900 revs/min, stirs 50 minutes.
By immersion way just hydrophober penetrate in foamed concrete, soak time 20min, after to be dried, foamed concrete saturated water absorption decline 70%.
Penetrate in foamed concrete by spray pattern by hydrophober, sprinkling consumption is 0.4kg/m
2, after to be dried, foamed concrete saturated water absorption declines 50%.
Contrast embodiment
Following comparative example, the saturated water absorption all in above-mentioned 4 cases declines based on maximum case-embodiments 3 and arranges.
Comparative example 1
" fluorocarbon resin emulsion (Oil repellent >=10%) 8% ", " water 71% " in embodiment 3 are replaced by " fluorocarbon resin emulsion (Oil repellent >=10%) 4% ", " water 75% ", and other is same as embodiment 3.Penetrate in foamed concrete by immersion way by hydrophober, foamed concrete saturated water absorption declines 60%, penetrates in foamed concrete by spray pattern by hydrophober, and foamed concrete saturated water absorption declines 40%.
Comparative example 2
" fluorocarbon resin emulsion (Oil repellent >=10%) 8% ", " water 71% " in embodiment 3 are replaced by " fluorocarbon resin emulsion (Oil repellent >=10%) 12% ", " water 67% ", and other is same as embodiment 3.Penetrate in foamed concrete by immersion way by hydrophober, foamed concrete saturated water absorption declines 70%, penetrates in foamed concrete by spray pattern by hydrophober, and foamed concrete saturated water absorption declines 55%.
Comparative example 3
By " benzene emulsion (Building class) 15% ", " water 71% " in embodiment 3, be replaced by " benzene emulsion (Building class) 8% ", " water 78 ", other is same as embodiment 3.Penetrate in foamed concrete by immersion way by hydrophober, foamed concrete saturated water absorption declines 75%, penetrates in foamed concrete by spray pattern by hydrophober, and foamed concrete saturated water absorption declines 50%.
Comparative example 4
By " benzene emulsion (Building class) 15% ", " water 71% " in embodiment 3, be replaced by " benzene emulsion (Building class) 22% ", " water 64 ", other is same as embodiment 3.Penetrate in foamed concrete by immersion way by hydrophober, foamed concrete saturated water absorption declines 65%, penetrates in foamed concrete by spray pattern by hydrophober, and foamed concrete saturated water absorption declines 45%.
Comparative example 5
By " fluorocarbon resin emulsion (Oil repellent >=10%) 8%; benzene emulsion (Building class) 15% ", " water 71% " in embodiment 3, be replaced by " fluorocarbon resin emulsion (Oil repellent >=10%) 4%; benzene emulsion (Building class) 22% ", " water 68% ", other is same as embodiment 3.Penetrate in foamed concrete by immersion way by hydrophober, foamed concrete saturated water absorption declines 60%, penetrates in foamed concrete by spray pattern by hydrophober, and foamed concrete saturated water absorption declines 40%.
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (7)
1. a foamed concrete hydrophober, is characterized in that, is made up of the component of following weight per-cent: fluorocarbon resin emulsion 5 ~ 10%, benzene emulsion 10 ~ 20%, silane coupling agent 1 ~ 5%, tensio-active agent 0.1 ~ 0.5%, film coalescence aid 0.2 ~ 0.5%, water 65 ~ 80%.
2. foamed concrete hydrophober according to claim 1, it is characterized in that, described silane coupling agent is tetraethoxy, methyltrimethoxy silane, Union carbide A-162, n-propyl triethoxyl silane, dodecyl Trimethoxy silane, APTES, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-(methacryloxypropyl) propyl trimethoxy silicane, gamma-mercaptopropyltriethoxysilane, vinyltrimethoxy silane, vinyl three ('beta '-methoxy oxyethyl group) silane, two-(trimethoxy-silylpropyl) amine, two-(triethoxysilylpropyltetrasulfide) amine, two (trimethoxy the is silica-based) ethane of 1,2-, 3,3,3-trifluoro propyl triethoxyl silane, or at least one in ten difluoro heptyl propyl trimethoxy silicanes.
3. foamed concrete hydrophober according to claim 1, is characterized in that, described glass or plastic containers or anion surfactant.
4. foamed concrete hydrophober according to claim 1, is characterized in that, described film coalescence aid is the one in alcohol, alcohol ester, alcohol ether or alcohol ether-ether.
5. according to the foamed concrete hydrophober described in Claims 1-4 any one, it is characterized in that, mass content >=10% of the fluorine in described fluorocarbon resin emulsion.
6. according to the foamed concrete hydrophober described in Claims 1-4 any one, it is characterized in that, described tensio-active agent is alkylphenol polyoxyethylene or polyoxyethylene sorbitan monooleate.
7. according to the foamed concrete hydrophober described in Claims 1-4 any one, it is characterized in that, described film coalescence aid is Lauryl Alcohol ester or butyl glycol ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510827487.5A CN105366987A (en) | 2015-11-25 | 2015-11-25 | Water repellent agent for foam concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510827487.5A CN105366987A (en) | 2015-11-25 | 2015-11-25 | Water repellent agent for foam concrete |
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| CN105366987A true CN105366987A (en) | 2016-03-02 |
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| CN201510827487.5A Pending CN105366987A (en) | 2015-11-25 | 2015-11-25 | Water repellent agent for foam concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101414A (en) * | 2017-12-27 | 2018-06-01 | 江苏蓝圈新材料股份有限公司 | A kind of magnesium oxysulfide concrete hydrophober and preparation method thereof |
| CN108483982A (en) * | 2018-04-27 | 2018-09-04 | 江苏蓝圈新材料股份有限公司 | A kind of special hydrophober of magnesium oxychloride product |
| CN111348813A (en) * | 2020-03-25 | 2020-06-30 | 江苏坤泽科技股份有限公司 | Silt solidified soil with ultrahigh water stability |
Citations (5)
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|---|---|---|---|---|
| JP2875917B2 (en) * | 1990-11-07 | 1999-03-31 | ダウ・コ−ニング・コ−ポレ−ション | Method and composition for making a stone building material water repellent |
| CN103804022A (en) * | 2014-01-17 | 2014-05-21 | 北京奥润开元环保科技研究院有限公司 | Fluorocarbon-type concrete protective agent and preparation method thereof |
| CN103805054A (en) * | 2014-03-04 | 2014-05-21 | 北京市市政工程研究院 | Concrete outer wall protective agent and preparation method thereof |
| CN104311141A (en) * | 2014-09-24 | 2015-01-28 | 青岛佰众化工技术有限公司 | Bare concrete protective agent and preparation method thereof |
| CN104496254A (en) * | 2014-11-24 | 2015-04-08 | 沈阳建筑大学 | Water repellent used for foam concrete and preparation method thereof |
-
2015
- 2015-11-25 CN CN201510827487.5A patent/CN105366987A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2875917B2 (en) * | 1990-11-07 | 1999-03-31 | ダウ・コ−ニング・コ−ポレ−ション | Method and composition for making a stone building material water repellent |
| CN103804022A (en) * | 2014-01-17 | 2014-05-21 | 北京奥润开元环保科技研究院有限公司 | Fluorocarbon-type concrete protective agent and preparation method thereof |
| CN103805054A (en) * | 2014-03-04 | 2014-05-21 | 北京市市政工程研究院 | Concrete outer wall protective agent and preparation method thereof |
| CN104311141A (en) * | 2014-09-24 | 2015-01-28 | 青岛佰众化工技术有限公司 | Bare concrete protective agent and preparation method thereof |
| CN104496254A (en) * | 2014-11-24 | 2015-04-08 | 沈阳建筑大学 | Water repellent used for foam concrete and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101414A (en) * | 2017-12-27 | 2018-06-01 | 江苏蓝圈新材料股份有限公司 | A kind of magnesium oxysulfide concrete hydrophober and preparation method thereof |
| CN108483982A (en) * | 2018-04-27 | 2018-09-04 | 江苏蓝圈新材料股份有限公司 | A kind of special hydrophober of magnesium oxychloride product |
| CN111348813A (en) * | 2020-03-25 | 2020-06-30 | 江苏坤泽科技股份有限公司 | Silt solidified soil with ultrahigh water stability |
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Application publication date: 20160302 |