CN104211354A - Self-closing repairing coating enhanced waterproof material - Google Patents
Self-closing repairing coating enhanced waterproof material Download PDFInfo
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Abstract
The invention relates to a self-closing repairing coating enhanced waterproof material. By adopting the self-closing repairing coating enhanced waterproof material, the problem of water leakage caused by cracks in a concrete base and a waterproof coating after long-time use in the prior art is mainly solved. By adopting the technical scheme of the self-closing repairing coating enhanced waterproof material comprising acrylic ester, silicates, a surface active agent, a powdery filler and high-water-absorbency resin such as a high-modulus ethylene-vinyl acetate copolymer emulsion, polyvinyl alcohol or polyimide, the problem is well solved, wherein the acrylic ester consists of butyl acrylate and methyl methacrylate and methacrylic acid; thus, the self-closing repairing coating enhanced waterproof material can be used in the industrial production of a polymer cement waterproof material.
Description
Technical field
The present invention relates to self-closing reparation film and strengthen water-proof material, particularly about combination of rigidity and flexibility cement group water-proofing material.
Background technology
Cement group water-proofing material development is in recent years very fast, and forms some series, as polymer modified cement based waterproof coatings, rigid polymer cement (dry mixing) waterproof mortar etc., based on rigid polymer cement waterproofing material.Rigidity water-proofing material modification adopts the technology such as admixture organic polymer, water-resisting agent, water reducer, swelling agent, the contraction of minimizing and compensation water mud material, prevents cracking, and reduce and the pore of refiner material, make concrete finer and close, anti-permeability performance greatly improves.The ageing resistance of this kind of material is good, but due to they be rigid material, therefore, the dilatation that matrix is larger cannot be adapted to.If basic unit is due to dry shrinkage or the cracking that expands with heat and contract with cold, water-proof material also by drawing crack or layering, will affect waterproof effect, and its use range is very limited, and not be suitable on the ground or the big area integral waterproofing engineering of roofing.
In recent years, in Japan and German and domestic some areas, one has the very high polymer cement ratio ratio of cement (polymkeric substance with), its value is 50% or higher, pasty state or the soup compound (coating) that sometimes can reach a kind of polymer modification of 100% or higher are widely used in apartment by the membranaceous water-proof material as a kind of liquid applications type, vault, the buildings such as underground tank, though it uses not by a lot of restriction, but because it executes man-hour requirement Site, polymer cement ratio, water cement ratio is high, therefore it is thinner also to there is disposable film, multiple tracks is needed to construct, the time-consuming shortcoming such as to take a lot of work.
EP0055035Al and EP0038126Al proposes composition and the preparation method of the cement-based material of high breaking strength, be with hydraulic cement, cement weight 1% ~ 15% water-soluble polymers or after aqueous dispersion polymers and water paddle formula high-shear impeller be kneaded into plasticity bulk material, mixing on double roll mill, then adopt extrude or mould pressing method shaping, obtained compact structure, macroscopic defects are few, the High Strength Cement-Based Materials of High anti bending strength.But this material is rigid material, and large to water sensitivity, and under hygrometric state, its strength retention is low.
Disclose a kind of waterproof paint in CN1048871A, it is resin emulsion class coating that this coating belongs to vinylformic acid (ester).Do not specifically note in the document that vinylformic acid (ester) is the concrete component of resin emulsion, and only reflect coating in document, do not introduce and form waterproof roll situation with cement based.
A kind of laminated composite waterproof rolling materials is disclosed in CN2340608Y.This coiled material is composited by waterproof protective layer, fiber-reinforced layer, water-proof material and fiber reinforcement non-skid finish successively, and wherein waterproof protective layer is equipped with special cement, softening agent, stablizer, pigment and appropriate high quality filler by acrylate to make.But do not point out the component of acrylate in the document.
A kind of acrylic acid is disclosed in CN2517580Y.It is formed by plastics film and the non-woven fabric compounded of two sides, wherein non-woven fabrics coated thereon one deck polyacrylic water-proof protective membrane, but do not disclose acrylic acid concrete component equally.
Polymer modified cement base waterproof material of a kind of flexibility and preparation method thereof is disclosed in CN1306949A.Wherein water-soluble polymers can be one in acrylic emulsions, styrene-butadiene latex, ethylene-vinyl acetate copolymer, vinyl acetate between to for plastic-tertiary carbonic ester emulsion, chlorine partial emulsion, vinyl chloride-vinyl acetate-acrylate copolymer emulsion, vinyl acetate emulsion, polychloroprene latex or its combination.But do not point out the concrete component of such as ACRYLIC EMULSION in the document, only list the second-order transition temperature of polymkeric substance as acrylic emulsions, PS9317, Tg=-40 DEG C; S400, Tg=-7 DEG C, BA163, Tg=-7 DEG C; P2438, Tg=-22 DEG C; EVA, Tg=7 DEG C.Find out from the result embodiment, its tensile strength is 1.74 ~ 4.34MPa, but elongation at break is 76 ~ 128%, lower.According to JC/T894-2001 " polymer cement waterproof paint " standard-required, its tensile strength of flexible materials answers >=1.2MPa, and elongation at break is >=200% is salable product; Rigid material requires tensile strength >=1.8MPa, elongation at break >=80%, though obvious above-mentioned document reaches this standard, but still lower.
Based on the feature of cement group water-proofing material high-durability, and its products production and construction in environment is not polluted, to base material wide adaptability, the good characteristics such as constructability, the present inventor conducts in-depth research this kind of material and compares, by the bold improvement to material component formula and production technique thereof, make the polymer cement homogenize material blending dispersion compared with low water-cement ratio and polymer cement ratio, the premium properties of rigidity cement waterproofing material with flexible (acrylate) water-proof material is combined, prepare to have through rolling process again after blade coating and to adapt to matrix deformability, flexible or combination of rigidity and flexibility, structure is more fine and close, water resistance is better, the cement group water-proofing material of excellent durability, even if there is crackle also antileaking later.
Summary of the invention
Technical problem to be solved by this invention is that in prior art, concrete base layer and water-proof material easily occur crackle for a long time and cause leaking water problem, a kind of self-closing reparation film is newly provided to strengthen water-proof material, even if this material has the advantage that crackle also antileaking appears in water-proof material.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of self-closing reparation film strengthens water-proof material, comprises following component by weight percentage:
A) acrylate 15 ~ 50%;
B) silicate 20 ~ 58%;
C) tensio-active agent 0.6 ~ 3.0%;
D) fleut 15 ~ 30%;
E) super absorbent resin 5 ~ 35%;
Wherein the composition of acrylate comprises following component by weight percentage:
1) butyl acrylate 50 ~ 80%;
2) methyl methacrylate 10 ~ 50%;
3) methacrylic acid 0.5 ~ 10%.
In technique scheme, silicate preferred version is be selected from least one in ordinary Portland cement, sulphur aluminium cement, iron aluminium cement, low alkali cement, high-alumina cement or white cement; Tensio-active agent preferred version is for being selected from alkylbenzene polyether sulfonate or alkylarylpolyoxyethylene ether; Powder filler is selected from least one in flyash, silicon ash, volcanic ash, zeolite powder, metakaolin, silica powder, Wingdale, talcum, light calcium carbonate or water-ground limestone; Super absorbent resin is selected from high-module ethene-vinyl acetate copolymer emulsion (VAE), polyvinyl alcohol or polyimide.Silicate more preferably scheme for being selected from ordinary Portland cement or high-alumina cement; Tensio-active agent more preferably scheme for being selected from hexadecyl benzene polyethers sodium sulfonate or dodecylbenzene Soxylat A 25-7.By weight percentage, in acrylate, butyl acrylate content preferable range is 55 ~ 70%, and methyl methacrylate content preferable range is 25 ~ 38%, and methacrylic acid content preferable range is 0.5 ~ 4%; Self-closing reparation film strengthens also containing fiber in water-proof material, and described fiber is selected from least one in steel fiber, inorganic fibre, organic fibre; Steel fiber is selected from least one in carbon steel fiber, Stainless Steel Fibre, metallic glass fiber; Inorganic fibre is selected from least one in chrysotile, acicular wollastonite, glass fibre, alkali resistant mineral wool, carbon fiber; Organic fibre is selected from least one in polypropylene fibre, nylon fiber, polyethylene fibre, polyvinyl alcohol fiber, the fine fiber of modified polypropene, aryl polyimides fiber, sisal hemp, sisal hemp, jute, napier grass.
The preparation method that the present invention's self-closing reparation film strengthens water-proof material is as follows:
A) first the acrylate (comprising butyl acrylate, methyl methacrylate and methacrylic acid) of aequum is mixed with the emulsion of solid content 40 ~ 80%;
B) in the emulsion of a) step, add tensio-active agent, the super absorbent resin of aequum, then mix;
C) after first silicate and powder filler being mixed, then and b) the emulsion Homogeneous phase mixing form slurry that obtains of step, obtain described water-proof material.
So-called " self-closing ", refers to that, when crackle appears in concrete base layer and waterproof coating, film, under the effect of water, can make the performance of crack seal itself by physical and chemical reaction.This process occurs gradually, and first, the water of infiltration is absorbed by film, and namely the waterproof coating near crack can produce volumetric expansion, thus water entry is narrowed, and inhibits the invasion of water; And then, form the absorption of calcium carbonate, solidification and accumulation under the activity gels agent effect of its film in resin, blocking water entry, thus make crack seal itself, play the effect of waterproof.
In the present invention due to acrylic ester emulsion along with dehydration process carries out, polymer beads is progressively close, particulate merges mutually, tightly packed, polymer segment penetrates entanglement mutually, the fillers such as cement are then filled in the space of heaping stand thing, and form non-homogeneity, namely multi-phase material take polymer as the aggregate of external phase.Simultaneously owing to being added with a large amount of cement component in acrylic ester emulsion, cement is different from mineral filler or sand grains, it is that active particle participates in system dehydration process, and self hydrated is formed based on silicate, the aggregated particles of metal hydroxide-containing, be dispersed in polymer segment formed network structure among.Hydroxyl in polymer molecule can react with the oxyhydroxide on cement silicate granules again, formed crosslinked, enhance aggregation structure, constitute more tough film body, thus make the cement group water-proofing material of formation not only be provided with higher tensile strength, substantially increase elongation at break simultaneously.Even and if water-proof material of the present invention is occurring crackle from now on, owing to adding the super absorbent resin of water-swellable, meeting closed crack after the super absorbent resin expansion of water suction, reaches the object of waterproof, achieves good technique effect.
Below by embodiment, the invention will be further elaborated.
Embodiment
[embodiment 1 ~ 6]
1. the mix material proportioning preparing cement group water-proofing material lists in table 1:
Table 1
2. preparation process:
A) first the butyl acrylate of aequum, methyl methacrylate and methacrylic acid and water are made into emulsion;
B) in the emulsion of a) step, add the mixture of the hexadecyl benzene polyethers sodium sulfonate of aequum or itself and dodecylbenzene Soxylat A 25-7, then add high-module ethene-vinyl acetate copolymer emulsion (VAE);
C) after first normal silicate 525 cement or high-alumina cement and flyash, silica powder and calcium carbonate powder filler being mixed, then and b) the material Homogeneous phase mixing form slurry that obtains of step;
D) slurry c) step obtained evenly is coated with on request and scrapes the one side spreading in nonwoven polypropylene fabric, then at about 80 DEG C of temperature after drying, shaped by water-proof material by rolling process, the thickness of water-proof material is 1.0 ~ 3.0 millimeters, and water-proof material weight is 3 ~ 4 kg/m 2; The thickness of nonwoven polypropylene fabric is 0.2 ~ 0.48 millimeter, and the weight of non-woven fabrics is 20 ~ 90 grams/m2, and its concrete data and testing of materials data list in table 2:
Table 2
Note: tensile strength and elongation at break press GB/T23445-2009 " polymer cement waterproof paint " standard test.
The water-proof material prepared is used for the waterproof of apartment exterior wall, after 8 months, the exterior wall of water-proof material is used to occur crackle, when raining, this material is understood moisture or moisture absorption after 2h and is expanded thus fully fill the effect that crack reaches complete waterproof under chemical action, and exterior wall still can not leak.
[embodiment 7 ~ 10]
1. the mix material proportioning preparing cement group water-proofing material lists in table 3:
Table 3
2. preparation process:
A) first the butyl acrylate of aequum, methyl methacrylate and methacrylic acid and water are made into emulsion;
B) in the emulsion of a) step, add the mixture of the hexadecyl benzene polyethers sodium sulfonate of aequum or itself and dodecylbenzene Soxylat A 25-7, then add high-module ethene-vinyl acetate copolymer emulsion (VAE) and fiber;
C) after first normal silicate 525 cement or high-alumina cement and flyash, silica powder and calcium carbonate powder filler being mixed, then and b) the material Homogeneous phase mixing form slurry that obtains of step;
D) slurry that c) step obtains is carried out performance test, its concrete data and testing of materials data list in table 4:
Table 4
Note: tensile strength and elongation at break press GB/T23445-2009 " polymer cement waterproof paint " standard test.
The water-proof material prepared is used for the waterproof of apartment exterior wall, after 8 months, the exterior wall of water-proof material is used to occur crackle, when raining, this material is understood moisture or moisture absorption after 2h and is expanded thus fully fill the effect that crack reaches complete waterproof under chemical action, and exterior wall still can not leak.
[comparative example]
1. the mix material proportioning preparing cement group water-proofing material lists in table 3:
Table 3
| Embodiment is numbered | 1 |
| Material name | Weight part |
| Normal silicate 525 cement | 67 |
| High-alumina cement | — |
| Flyash | 4 |
| Silica powder | 15 |
| Calcium carbonate | 13 |
| Butyl acrylate | 38 |
| Methyl methacrylate | 18 |
| Methacrylic acid | 1.5 |
| Hexadecyl benzene polyethers sodium sulfonate | 0.8 |
| Dodecylbenzene Soxylat A 25-7 | 1.0 |
| Water | 43 |
2. preparation process:
A) first the butyl acrylate of aequum, methyl methacrylate and methacrylic acid and water are made into emulsion;
B) in the emulsion of a) step, add the mixture of the hexadecyl benzene polyethers sodium sulfonate of aequum or itself and dodecylbenzene Soxylat A 25-7;
C) after first normal silicate 525 cement or high-alumina cement and flyash, silica powder and calcium carbonate powder filler being mixed, then and b) the material Homogeneous phase mixing form slurry that obtains of step;
D) slurry c) step obtained evenly is coated with on request and scrapes the one side spreading in nonwoven polypropylene fabric, then at about 80 DEG C of temperature after drying, shaped by water-proof material by rolling process, the thickness of water-proof material is 1.0 ~ 3.0 millimeters, and water-proof material weight is 3 ~ 4 kg/m 2; The thickness of nonwoven polypropylene fabric is 0.2 ~ 0.48 millimeter, and the weight of non-woven fabrics is 20 ~ 90 grams/m2, and its concrete data and testing of materials data list in table 4:
Table 4
Note: tensile strength and elongation at break press GB/T23445-2009 " polymer cement waterproof paint " standard test.
The water-proof material prepared is used for the waterproof of apartment exterior wall, after 8 months, use the exterior wall of water-proof material to occur the crackle of millimeter, leaking appears in exterior wall.
Claims (6)
1. self-closing reparation film strengthens a water-proof material, comprises following component by weight percentage:
A) acrylate 15 ~ 50%;
B) silicate 20 ~ 58%;
C) tensio-active agent 0.6 ~ 3.0%;
D) fleut 15 ~ 30%;
E) super absorbent resin 5 ~ 35%;
Wherein the composition of acrylate comprises following component by weight percentage:
1) butyl acrylate 50 ~ 80%;
2) methyl methacrylate 10 ~ 50%;
3) methacrylic acid 0.5 ~ 10%.
2. self-closing reparation film strengthens water-proof material according to claim 1, it is characterized in that silicate is selected from least one in ordinary Portland cement, sulphur aluminium cement, iron aluminium cement, low alkali cement, high-alumina cement or white cement; Tensio-active agent is selected from alkylbenzene polyether sulfonate or alkylarylpolyoxyethylene ether; Powder filler is selected from least one in flyash, silicon ash, volcanic ash, zeolite powder, metakaolin, silica powder, Wingdale, talcum, light calcium carbonate or water-ground limestone; Super absorbent resin is selected from high-module ethene-vinyl acetate copolymer emulsion (VAE), polyvinyl alcohol or polyimide.
3. self-closing reparation film strengthens water-proof material according to claim 2, and it is characterized in that silicate is selected from ordinary Portland cement or high-alumina cement, tensio-active agent is selected from hexadecyl benzene polyethers sodium sulfonate or dodecylbenzene Soxylat A 25-7.
4. self-closing reparation film strengthens water-proof material according to claim 1, and it is characterized in that butyl acrylate content is 55 ~ 70% in acrylate by weight percentage, methyl methacrylate content is 25 ~ 38%, and methacrylic acid content is 0.5 ~ 4%.
5. self-closing reparation film strengthens water-proof material according to claim 1, and it is characterized in that self-closing reparation film strengthens also containing fiber in water-proof material, described fiber is selected from least one in steel fiber, inorganic fibre, organic fibre.
6. self-closing reparation film strengthens water-proof material according to claim 5, it is characterized in that steel fiber is selected from least one in carbon steel fiber, Stainless Steel Fibre, metallic glass fiber; Inorganic fibre is selected from least one in chrysotile, acicular wollastonite, glass fibre, alkali resistant mineral wool, carbon fiber; Organic fibre is selected from least one in polypropylene fibre, nylon fiber, polyethylene fibre, polyvinyl alcohol fiber, the fine fiber of modified polypropene, aryl polyimides fiber, sisal hemp, sisal hemp, jute, napier grass.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104761968A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠市高华电子有限公司 | Radiation heat-insulating coating being excellent in weather resistance and preparation method thereof |
| CN107162468A (en) * | 2017-06-14 | 2017-09-15 | 合肥易美特建材有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN107739584A (en) * | 2017-11-06 | 2018-02-27 | 吉林省翔河建筑材料有限公司 | It is a kind of to be used to paste rubber powder of waterproof roll and preparation method thereof |
| CN108863154A (en) * | 2018-06-20 | 2018-11-23 | 河南阳光防水科技有限公司 | Self-healing capillary crystalline waterproof agent |
| CN110408247A (en) * | 2019-08-12 | 2019-11-05 | 天津海之星水下机器人有限公司 | A kind of underwater structures spraying repair materials and preparation method thereof |
| CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
| CN111501510A (en) * | 2020-06-03 | 2020-08-07 | 吴武基 | Microcrack repairing process for bridge deck |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761968A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠市高华电子有限公司 | Radiation heat-insulating coating being excellent in weather resistance and preparation method thereof |
| CN107162468A (en) * | 2017-06-14 | 2017-09-15 | 合肥易美特建材有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN107739584A (en) * | 2017-11-06 | 2018-02-27 | 吉林省翔河建筑材料有限公司 | It is a kind of to be used to paste rubber powder of waterproof roll and preparation method thereof |
| CN108863154A (en) * | 2018-06-20 | 2018-11-23 | 河南阳光防水科技有限公司 | Self-healing capillary crystalline waterproof agent |
| CN110408247A (en) * | 2019-08-12 | 2019-11-05 | 天津海之星水下机器人有限公司 | A kind of underwater structures spraying repair materials and preparation method thereof |
| CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
| CN111501510A (en) * | 2020-06-03 | 2020-08-07 | 吴武基 | Microcrack repairing process for bridge deck |
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