CN1205993A - Cement waterproofing agent and its preparation - Google Patents
Cement waterproofing agent and its preparation Download PDFInfo
- Publication number
- CN1205993A CN1205993A CN 98115815 CN98115815A CN1205993A CN 1205993 A CN1205993 A CN 1205993A CN 98115815 CN98115815 CN 98115815 CN 98115815 A CN98115815 A CN 98115815A CN 1205993 A CN1205993 A CN 1205993A
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- monomer
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- concrete
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0059—Graft (co-)polymers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention relates to the technology of using polymer emulsion as the effective component of mortar, concrete or artificial stone. The waterproofing agent is prepared with styrene, butyl acrylate, and methyl methacrylate monomers through emulsion polymerization at pH 8-10,70-86 deg.c and the presence of initiator. It is diluted to 20 times before being used to replace water added into concrete, and its use can resist water, resist pressure and prevent crack.
Description
The invention belongs to polymer emulsion that use obtains by carbon-to-carbon unsaturated bond reaction effective ingredient technical field, particularly a kind of cement waterproof agent and preparation method thereof as mortar, concrete or rostone.
Concrete itself is porous, is not that institute has living space and all has aggregate with solid-state filling wherein.Cement can produce hole through hydro-combination process, also can produce bubble in the concrete whipping process.When free-water with after hole in the concrete combines, the concrete structure of final molding just has water permeability, water is under static pressure or capillary action like this, promptly can enter concrete structure, pass in time concrete structure is produced destruction, the structure outward appearance is also outmoded gradually, in eclipse, produces stain and causes and fade.Although the concrete production selects for use high-quality aggregate, cement to mix and stir with suitable proportion and fully maintenance, the inherent hole still can't be eliminated fully in the concrete, makes buildings can not reach real waterproof.Mostly adopt flexible water technology and rigid waterproofing technology to solve both at home and abroad to this.The flexible water technology promptly adopts flexible waterproof material to impose building surface to carry out waterproof, and flexible waterproof material is divided into coiled material and waterproof paint, has certain flexible elasticity.But the bituminous matter coiled material is easily aging, and high temperature easily trickles, fragile under low temperature splitting, and heat construction influences environment and often scalds the staff, and should not construct operational difficulty at complex region; EPDM rubber rolling material is easy hollowing then, and through some freeze-thaw cycle, coiled material is thrown off (being hollowing) with the buildings matrix, and seam is a lot of when constructing, as long as place water inlet is arranged, because coiled material bottom hollowing, the water route is communicated with, often cause the big area seepage, and be difficult for finding drain-source, be difficult to repair.The then most poor durability of waterproof paint, low temperature is difficult for construction, is subjected to certain limitation in the application.The measure of rigid waterproofing major technique is to mix water-resisting agent, water reducer, swelling agent etc. in cement concrete, mix water-resisting agent, water reducer can improve concrete impermeability and water-absorbent, by reducing concrete water-cement ratio, increase concrete density, reduce pore quantity or make the concrete hydrophobic reach the waterproof purpose, but this two classes admixture all can not solve concrete shrinkage this key problem that ftractures, concrete is cracking in a single day, and waterproof is not just known where to begin yet.Add swelling agent, then in hydration process, produce products such as a large amount of ettringite or calcium hydroxide, produce necessarily and expand, the contraction that comes compensating concrete, thus reach impervious leakproof purpose.But swelling agent is used in underground works mostly, little, the high humidity of underground activities temperature variation, and concrete is dry to be shunk and expands with heat and contract with cold for a short time, and waterproof effect is better, is used for then not satisfactory on the ground.In recent years, a lot of engineerings adopt the technical measures of rigid plate and flexible joint composite water-proof, be the hard and soft of so-called an amount of structural distortion in conjunction with waterproof layer, rigid plate mainly is to adopt self-compacting concrete, hydrophobic concrete or expansive concrete, from (in advance) prestressed concrete etc., divide plate to establish seam, with flexible materials filletings such as ointment, but boundary position intractable, and the caulking compounds quality often do not pass a test, through one winter freeze-thaw cycle, very easily embrittlement, ointment and concrete are thrown off fully, become drain-source, cause the waterproof failure.
The object of the present invention is to provide a kind of not only waterproof, resistance to compression but also can prevent fissured cement waterproof agent and preparation method thereof.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: a kind of cement waterproof agent, make by the monomer emulsion polyreaction, and monomer comprises parts by weight 20-30 part vinylbenzene, 20-30 part butyl acrylate, 14-22 part methyl methacrylate.
Monomer also comprises parts by weight 1-2 part vinylformic acid, 1-5 part methacrylic acid.
Also contain parts by weight 5-8 part alizarin assistant, 3-8 part rosin sodium.
The preparation method of described cement waterproof agent, by the monomer that comprises parts by weight 20-30 part vinylbenzene, 20-30 part butyl acrylate, 14-22 part methyl methacrylate under the initiator effect under PH=8-10, T=70-86 ℃ condition emulsion be polymerized.
Monomer also comprises parts by weight 1-2 part vinylformic acid, 1-5 part methacrylic acid.
It is 0.1-0.5 part that initiator is selected ammonium persulphate, consumption for use, and it is 0.05-0.5 part that emulsifying agent is selected aniorfic surfactant such as sodium laurylsulfonate, consumption for use, and water is with deionized water, consumption 40-60 part, pH value Na
2CO
3Solution is regulated; Order of addition(of ingredients) is: under stirring the emulsifying agent adding had in the reactor of deionized water, adds monomer, transfer pH value to prescribed value, add initiator, be warming up to specified temperature with alkali, and back flow reaction 1-2 hour, cooling.
Add 5-8 part alizarin assistant, mixing in the reaction gained emulsion.
Add 3-8 part rosin sodium in the gained emulsion, mixing.
Product using method of the present invention is: dilute with water (1 part of cement waterproof agent adds 20 parts in water) back adds cement, to replace water requirement in the concrete.Can add concrete and carry out various waterproofing work WATER REPELLENT, as swimming pool, pond, toilet, bathroom, kitchen, vault, basis, interior external wall waterproof, tunnel, channel, subway, the impervious leakproof of civil air defense constructions and installations, curve, abnormally-structured waterproof etc.; Can be used for making various cement products, concrete water transmission pipe etc.; Can be used for making water drain, blow-off line, paper mill effluent pipeline etc.; Face decoration materials such as marble, ceramic tile can be used for boning.
Used monomer styrene, methyl methacrylate are hard monomer in the production of the present invention, and butyl acrylate is a soft monomer, and methacrylic acid is a linking agent, the polymkeric substance of making the not only certain intensity of tool but also good snappiness and the elasticity of tool, and freeze-thaw resistance is good.
After replacing the content adding of coagulation water in soil behind the cement water-proof dilution agent of the present invention; form waterproof layer rapidly at body structure surface; simultaneously filled the industrial hole that can't eliminate fully, thereby formed protective layer from inside to outside, reached thorough waterproof effect in inside configuration.When after its dilution and replacing concrete to answer amount of water to add, the hydration process of cement is longer than normal circumstances because of the water yield reduces meeting, but long hydro-combination process reduces the generation of heat, and the minute crack that produces because of drying shrinkage effect in the cement solidification process also can reduce like this.In addition, polymkeric substance both can improve structural strength as skeletal substance in the product of the present invention, made it have certain flexibility and elasticity again, structure tensile strength, compression shear strength, and flexibility all is improved, not easy fracture.
With reference to 96 years version strength grade of concrete proportioning C25 of country, 20 times of product dilute with waters of the present invention are replaced water-contents in the concrete, it is as follows that its technical feature is carried out test result:
(1), time of coagulation: about 1 hour of initial set, final set was less than 6 hours;
(2), flexibility: under 80 ± 2 ℃ of high temperature and-15 ± 2 ℃ of low temperature around φ 10mm cement pole flawless;
(3), cohesive strength:
The strength ratio standard improved 15-20% in tensile strength: 7-28 days;
Compression shear strength: the strength ratio standard improved 10-15% in 28 days;
(4), heat-resisting cold cyclicity :-20-+20 ℃ of freeze-thaw cycle 200 times, weight loss are zero, and flawless occurs.
(5), impermeability: keep hydraulic pressure 1 hour waterproof at 0.5-1.0MPa;
(6), high and low temperature resistance; 3 days flawlesses of 80 ℃ of poach occur;-20 ℃ of freezing 3 days no changes;
(7), alkali resistance: the Ca of 25% weight percent concentration (OH)
2Solution soaking not efflorescence in 500 hours, flawless;
(8), weather resisteant: flawless, efflorescence≤1 grade.
This product does not contain organic solvent in addition, toxicological harmless, and cold construction operation, free from environmental pollution, can make various colored, water-repellent layers according to user's needs, both can make waterproof layer after wiping one's face, can make ornament layer again.Product processes is simple, the cycle is short, easy to operate, production cost is lower.
Further specify the present invention below by embodiment:
Embodiment 1,2, and 3,4 making processes are as follows: put into regulation umber deionized water in stirred autoclave, add anion surfactant and stir evenly, monomer is added in the reactor, transfer pH value to prescribed value with alkali (as sodium bicarbonate).Add initiator (as ammonium persulphate, Potassium Persulphate) and be warming up to prescribed value, back flow reaction specified time.Discharging.Add specified amount alizarin assistant after the discharging, stir evenly.Add regulation umber rosin sodium again, stir evenly into milk sap and get final product.Material consumption and reaction parameter see the following form among each embodiment:
| The embodiment project | ????1 | ????2 | ????3 | ????4 |
| Vinylbenzene (parts by weight) | ????20 | ????20 | ????26 | ????30 |
| Butyl acrylate (parts by weight) | ????25 | ????25 | ????20 | ????30 |
| Methyl methacrylate (parts by weight) | ????14 | ????14 | ????18 | ????20 |
| Methacrylic acid (parts by weight) | ????1 | ????5 | ????3.5 | |
| Vinylformic acid (parts by weight) | ????1 | ????2 | ||
| Initiator (parts by weight) | Potassium Persulphate 0.1 | Ammonium persulphate 0.1 | Ammonium persulphate 0.2 | Ammonium persulphate 0.15 |
| Emulsifying agent (parts by weight) | Sodium laurylsulfonate 0.05 | Sodium laurylsulfonate 0.05 | Sodium laurylsulfonate 0.5 | Dodecyl sodium iodate 0.5 |
| Deionized water (parts by weight) | ????40 | ????45 | ????52 | ????60 |
| Alizarin assistant (parts by weight) | ????8 | ????8 | ????10 | ????6.5 |
| Rosin sodium (parts by weight) | ????5 | ????7.5 | ????3 | |
| PH value | ????8 | ????8 | ????9 | ????10 |
| T(℃) | ????70 | ????70 | ????76±1 | ??85±1 |
| T (hour) | ????1 | ????1 | ????2 | ????1.5 |
Claims (10)
1, a kind of cement waterproof agent is made by the monomer emulsion polyreaction, and the present invention is characterised in that monomer comprises parts by weight 20-30 part vinylbenzene, 20-30 part butyl acrylate, 14-22 part methyl methacrylate.
2, water-resisting agent as claimed in claim 1 is characterized in that, monomer also comprises parts by weight 1-2 part vinylformic acid, 1-5 part methacrylic acid.
3, water-resisting agent as claimed in claim 1 or 2 is characterized in that also containing parts by weight 5-8 part alizarin assistant, 3-8 part rosin sodium.
4, the preparation method of the described cement waterproof agent of claim 1, the present invention is characterised in that, by the monomer that comprises parts by weight 20-30 part vinylbenzene, 20-30 part butyl acrylate, 14-22 part methyl methacrylate under the initiator effect under PH=8-10, T=70-86 ℃ condition emulsion be polymerized.
5, preparation method as claimed in claim 4 is characterized in that, monomer also comprises parts by weight 1-2 part vinylformic acid, 1-5 part methacrylic acid.
6, as claim 4 or 5 described preparation methods, it is characterized in that, it is 0.1-0.5 part that initiator is selected ammonium persulphate, consumption for use, it is 0.05-0.5 part that emulsifying agent is selected aniorfic surfactant such as sodium laurylsulfonate, consumption for use, water deionized water, consumption 40-60 part, pH value Na
2CO
3Solution is regulated; Order of addition(of ingredients) is: under stirring the emulsifying agent adding had in the reactor of deionized water, adds monomer, transfer pH value to prescribed value, add initiator, be warming up to specified temperature with alkali, and back flow reaction 1-2 hour, cooling.
7, as claim 4 or 5 described preparation methods, it is characterized in that, add 5-8 part alizarin assistant, mixing in the reaction gained emulsion.
8, preparation method as claimed in claim 7 is characterized in that, adds 3-8 part rosin sodium in the gained emulsion, mixing.
9, preparation method as claimed in claim 6 is characterized in that, adds 5-8 part alizarin assistant in the gained emulsion, mixing.
10, preparation method as claimed in claim 9 is characterized in that, the gained emulsion adds 3-8 part rosin sodium, mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98115815 CN1067038C (en) | 1998-07-10 | 1998-07-10 | Cement waterproofing agent and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98115815 CN1067038C (en) | 1998-07-10 | 1998-07-10 | Cement waterproofing agent and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1205993A true CN1205993A (en) | 1999-01-27 |
| CN1067038C CN1067038C (en) | 2001-06-13 |
Family
ID=5224770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98115815 Expired - Fee Related CN1067038C (en) | 1998-07-10 | 1998-07-10 | Cement waterproofing agent and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067038C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440760A (en) * | 2016-01-12 | 2016-03-30 | 烟台顺隆化工科技有限公司 | Water-proofing agent for use in airport runways |
| CN105504911A (en) * | 2016-01-12 | 2016-04-20 | 烟台顺隆化工科技有限公司 | Waterproof agent for impounding reservoir |
| CN106904895A (en) * | 2017-03-31 | 2017-06-30 | 上饶市天佳新型材料有限公司 | A kind of waterproof mortar liquid material and preparation method thereof and cement-based polymer water-proof mortar |
| CN106930473A (en) * | 2017-03-28 | 2017-07-07 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top board |
| CN112679668A (en) * | 2020-12-11 | 2021-04-20 | 佛山市桐立新材料科技有限公司 | Water-proof wet high-adhesion water-based acrylate copolymer emulsion and preparation method thereof |
-
1998
- 1998-07-10 CN CN 98115815 patent/CN1067038C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440760A (en) * | 2016-01-12 | 2016-03-30 | 烟台顺隆化工科技有限公司 | Water-proofing agent for use in airport runways |
| CN105504911A (en) * | 2016-01-12 | 2016-04-20 | 烟台顺隆化工科技有限公司 | Waterproof agent for impounding reservoir |
| CN106930473A (en) * | 2017-03-28 | 2017-07-07 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top board |
| CN106930473B (en) * | 2017-03-28 | 2019-03-26 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top plate |
| CN106904895A (en) * | 2017-03-31 | 2017-06-30 | 上饶市天佳新型材料有限公司 | A kind of waterproof mortar liquid material and preparation method thereof and cement-based polymer water-proof mortar |
| CN106904895B (en) * | 2017-03-31 | 2019-02-01 | 上饶市天佳新型材料有限公司 | A kind of waterproof mortar liquid material and preparation method thereof and cement-based polymer water-proof mortar |
| CN112679668A (en) * | 2020-12-11 | 2021-04-20 | 佛山市桐立新材料科技有限公司 | Water-proof wet high-adhesion water-based acrylate copolymer emulsion and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1067038C (en) | 2001-06-13 |
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