CN103979871A - Hydrophobic polymer emulsion and its application - Google Patents
Hydrophobic polymer emulsion and its application Download PDFInfo
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- CN103979871A CN103979871A CN201410194182.0A CN201410194182A CN103979871A CN 103979871 A CN103979871 A CN 103979871A CN 201410194182 A CN201410194182 A CN 201410194182A CN 103979871 A CN103979871 A CN 103979871A
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- type polymer
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Abstract
The invention provides a hydrophobic polymer emulsion and its application. An emulsification system having little influence on the cement performances including setting time, compressive strength and flexural strength and functional monomers are synthesized into a hydrophobic polymer emulsion for a polymer cement base waterproof material by an emulsion polymerization method; and then on the basis of the hydrophobic polymer emulsion, the polymer cement base waterproof material can be manufactured. The material has excellent waterproof and moisture-proof performances, can be used for water and moisture prevention of toilet, wall, roofing and basement of buildings, and bridge and tunnel; and the material has good affinity with cement mortar, and the waterproof layer surface can be directly coated with the cement mortar, without affecting the bond behavior.
Description
Technical field
The invention belongs to the synthetic and waterproof system constructing technology field of hydrophobic type polymer emulsion, be specifically related to hydrophobic type polymer emulsion that synthetic and cement performance merge mutually and prepare the method for hydrophobic type water-proof material with this.
Background technology
Cement-based polymers emulsion, as architectural waterproof material, is used widely in China.But due to the intrinsic structure hole of sand-cement slurry, concrete and the hydrophilic feature of emulsion, the in the situation that of moist or contact water, water can enter waterproof layer inside by these holes, water-proof coating is substantially in water wet condition, this will cause the body of wall of upstream face moister, the long-term furniture moldy metamorphism by wall, the impact use function of in the past may causing.At vault, malaria all has adverse influence to electrical equipment facility and the automobile of parking etc.In coastland, salt fog also can corrode metope, causes steel bar corrosion, destroys wall body structure.On bridge pier over strait,, also may there is bar construction safety problem in immersion, the erosion of seawater to bridge pier.Therefore there is respiratory function at these basal planes or entirety formation, possess again the waterproof layer of hydrophobic performance, have actively and significance for addressing the above problem.
In existing polymer emulsion system, on sand-cement slurry or concrete pool time, structural strength impact greatly, unsuitable emulsification system often causes cement-based polymers material structure intensity significantly to reduce to most emulsification systems.In the situation that emulsion amount is fewer, due to the impact of some group of emulsifying agent, make system can not form polymer network structure, also can not form concrete rigid structure, cause waterproof layer to lose efficacy.And too much emulsion generally forms polymer network structure, can not bring into play concrete performance, low strength, and the in the situation that of normal contact water, coating is easy to foaming or reduce intensity, causes losing water-proof function.
New through looking into, the correlative study that utilizes hydrophobic polymer emulsion and cement admixture to build hydrophobic waterproof system there is not yet report.
Summary of the invention
The object of the present invention is to provide a kind of hydrophobic type polymer emulsion and application thereof, select and cement performance, comprise that time of coagulation, resistance to compression, less emulsification system and the functional monomer of folding strength impact pass through emulsion polymerisation process synthetic polymer cement group water-proofing material hydrophobic type polymer emulsion.Manufacture based on this polymer cement-based waterproof material, its composition comprises hydrophobic type polymer emulsion, cement based composite materials again, defoamer, water reducer etc.Form the waterproof layer with hydrophobic function by waterproof construction, there is excellent waterproof damp proof insulation performance, can be used for waterproof, the protection against the tide such as toilet, metope, roofing, vault and bridge, tunnel of buildings; Have good avidity with sand-cement slurry, sand-cement slurry can, directly at this waterproof layer covering surface, not affect adhesive property.
For achieving the above object, the present invention adopts following technical scheme:
Select a kind of emulsifier system, this emulsification system is:
1) hydrophobic side is alkane or aralkyl hydrocarbon segment, and water-wet side is the anionic emulsifier of succinate, sulfonate;
2) co-emulsifier is nonionic emulsifier;
Emulsifier system is selected to consider that polyvalent ion is had to satisfactory stability, can be mixed with cement stabilizing.Simultaneously less on strength of cement impact, be conducive to form the silicate cement rigid structure with intensity.
Main polymer chain section is: acrylate and multipolymer thereof; Acrylate and other ethylene monomer copolymer, ethene-acetate ethylene copolymer etc.By emulsion polymerization technique, in polymer segment, introduce hydrophobic grouping, as the organosilicon radicals such as siloxanes, fluoro-containing group, monomer contain haloid element etc.After making this emulsion and sand-cement slurry, concrete be mixed to form waterproof layer, there is hydrophobic function.
Emulsion of the present invention and cement, quartz sand (powder) are mixed to form water-proof material according to a certain percentage, and general proportioning is controlled at emulsion 10 ~ 50%, water 10 ~ 30%, cement admixture 50 ~ 75%.After construction, waterproof layer entirety forms hydrophobic structure, and obstruction water to structural sheet internal penetration, reaches waterproof moisture-proof effect by pore.The waterproof system building can be flexibility or rigidity structure.
Remarkable advantage of the present invention is:
(1) with the comparison of existing similar waterproof system, waterproof layer entirety and surface all have good hydrophobic performance, and water is difficult for entering silicate sturcture inside by waterproof layer, ensures waterproof effect.This is for improving the function of waterproof layer, ensures that building is impervious, waterproof, moistureproof safety have positive effect.
(2) admixture hydrophobic lotions in concrete, can improve the impervious grade of buildings.Therefore can promote the use of at building foundation, vault, tunnel, bridge.
(3) can be used as the exposed wall water proof of coastland, due to its hydrophobic function, can effectively resist salt fog and corrode, delay steel bar corrosion, ensure buildings work-ing life.
Embodiment
1,hydrophobic lotions is synthetic:
(1) synthon is: acrylate, methacrylic acid, vinylbenzene, vinyl, propenyl organosilane monomer, vinyl propenyl, fluorochemical monomer, halogen-containing vinyl, propenyl monomer etc.
(2) emulsifier system is: hydrophobic side is alkane or virtue, alkane segment, and water-wet side is succinate, sulfonate anionic emulsifying agent; Co-emulsifier is nonionic emulsifier.
(3) emulsion polymerization technique adopts batch production mode, and emulsion solid content is controlled at 40 ~ 50%, and residual monomer content is less than 1.0%.
2, hydrophobic waterproof layer builds:
(1) product is two components, and liquid material is hydrophobic lotions, water, dispersion agent, defoamer etc.Powder is: cement, silica powder (sand) dicalcium powder, pigment etc.Product emulsion consumption per ton is 6 ~ 50%.
(2) will after liquid material and powder stirring mixing, form hydrophobic water-proof coating with multiple tracks roller coat or batch form of construction work of scraping in proportion.
(3) add hydrophobic lotions to concrete in 8 ~ 12% ratio and form hydrophobic structure, for bridge and tunnel water proofing.
Embodiment 1
Hydrophobic lotions polymerization
1, monomer pre-emulsification
In reactor, add water, emulsifying agent, start stirring, add the monomer mixing, carry out pre-emulsification, pre-emulsion is extracted into header tank.
2, in reactor, add bed material, be heated to 75 ~ 80 DEG C of temperature.
3, the respective amount initiator that adds a certain amount of pre-emulsion and prepare in advance, carries out seeding polymerization.
4, without after refluxing, add pre-emulsion and initiator with constant flow rate continuously simultaneously.Keep homo(io)thermism.
5, after reaction finishes, cooling discharge, emulsion solid content is controlled at 50 ± 2%, Tg:-3 DEG C.
Hydrophobic water-proof material is produced
1, cement, quartz sand, dicalcium powder are mixed to packaging by mixing machine in 1:1.2:0.3 ratio.Be powder component.
2, hydrophobic lotions, water, dispersion agent, defoamer, time of coagulation are regulated to auxiliary agent, in following ratio 1:2:0.05:0.01:0.01: mix, packaging, is liquid material.
3, when construction in, is by liquid material: powder=1:1.5 ~ 3 ratio after evenly mixing, criticize scrape or roller coating on the anti-water surface of basic unit.
Embodiment 2
Vault, swimming pool, dam, bridge pier waterproof construction over strait: hydrophobic type emulsion of the present invention is directly mixed in the concrete of above-mentioned engineering, volume is 6 ~ 12% of amount of concrete, before construction, must carry out concrete volume proportioning test, ensure that concrete has the mechanical property of design.Mixing hydrophobic lotions can make concrete structure have hydrophobic performance.The method can effectively stop water and entrained soluble salt to spread to inside concrete, and the reinforcing bar of protection inside configuration is not corroded.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. a hydrophobic type polymer emulsion, it is characterized in that: select and cement performance, comprise time of coagulation, resistance to compression, less emulsification system and the functional monomer of folding strength impact, by emulsion polymerisation process synthetic polymer cement group water-proofing material hydrophobic type polymer emulsion.
2. hydrophobic type polymer emulsion according to claim 1, is characterized in that: primary emulsion water-wet side is succinate, sulfonate.
3. hydrophobic type polymer emulsion according to claim 1, it is characterized in that: main polymer chain section comprises acrylate, acrylate and alkenyl monomer multipolymer and ethylene-vinyl acetate copolymer, on main polymer chain or side chain, embed or access hydrophobic grouping, the group that comprises siloxane groups, fluoro-containing group, contains haloid element by emulsion polymerization technique.
4. hydrophobic type polymer emulsion according to claim 1, is characterized in that: by molecular designing, regulate soft or hard monomer ratio, the second-order transition temperature of controlling polymer emulsion is-25 ~ 15 DEG C.
5. an application for hydrophobic type polymer emulsion as claimed in claim 1, is characterized in that: described hydrophobic type polymer emulsion is for the preparation of polymer cement-based waterproof material.
6. the application of hydrophobic type polymer emulsion according to claim 5, is characterized in that: described polymer cement-based waterproof material is hydrophobic type polymer cement-base waterproof coating, hydrophobic type polymer cement-based waterproof slurry, hydrophobic type polymer cement-based waterproof mortar, hydrophobic type polymer concrete.
7. the application of hydrophobic type polymer emulsion according to claim 5, it is characterized in that: hydrophobic type polymer emulsion is directly mixed with sand-cement slurry, concrete or other inorganic gel materials, form after waterproof layer by construction, maintenance, coating entirety all has hydrophobic function; This waterproof body system is mainly used in kitchen, toilet, metope, roofing, vault and bridge, the waterproof in tunnel, the protection against the tide of buildings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410194182.0A CN103979871A (en) | 2014-05-09 | 2014-05-09 | Hydrophobic polymer emulsion and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410194182.0A CN103979871A (en) | 2014-05-09 | 2014-05-09 | Hydrophobic polymer emulsion and its application |
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| CN103979871A true CN103979871A (en) | 2014-08-13 |
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| CN201410194182.0A Pending CN103979871A (en) | 2014-05-09 | 2014-05-09 | Hydrophobic polymer emulsion and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437735A (en) * | 2018-11-22 | 2019-03-08 | 福建工程学院 | A kind of super-hydrophobic cement and its application method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339018A (en) * | 1999-02-04 | 2002-03-06 | 瓦克化学有限公司 | Aqueous creams of organosilicon compounds |
| CN1477148A (en) * | 2002-07-25 | 2004-02-25 | ���ܿ���ϵͳ����˾ | Hydrophobic Modified polymer |
| CN101568500A (en) * | 2006-11-22 | 2009-10-28 | 陶氏康宁公司 | Cementitious materials |
-
2014
- 2014-05-09 CN CN201410194182.0A patent/CN103979871A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339018A (en) * | 1999-02-04 | 2002-03-06 | 瓦克化学有限公司 | Aqueous creams of organosilicon compounds |
| CN1477148A (en) * | 2002-07-25 | 2004-02-25 | ���ܿ���ϵͳ����˾ | Hydrophobic Modified polymer |
| CN101568500A (en) * | 2006-11-22 | 2009-10-28 | 陶氏康宁公司 | Cementitious materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437735A (en) * | 2018-11-22 | 2019-03-08 | 福建工程学院 | A kind of super-hydrophobic cement and its application method |
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Application publication date: 20140813 |