CN111574140A - Dry-mixed color waterproof dustproof mortar and preparation method thereof - Google Patents
Dry-mixed color waterproof dustproof mortar and preparation method thereof Download PDFInfo
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- CN111574140A CN111574140A CN201910506926.0A CN201910506926A CN111574140A CN 111574140 A CN111574140 A CN 111574140A CN 201910506926 A CN201910506926 A CN 201910506926A CN 111574140 A CN111574140 A CN 111574140A
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Finishing Walls (AREA)
Abstract
The invention relates to the field of building materials, in particular to dry-mixed colored waterproof dustproof mortar which is mainly prepared from the following raw materials in parts by mass: 25-35 parts of white cement, 40-55 parts of quartz sand, 10-25 parts of heavy calcium carbonate, 0.6-1.5 parts of redispersible latex powder, 0.4-1 part of modified water repellent, 0.01-0.05 part of starch ether, 0.06-0.15 part of hydroxypropyl cellulose ether, 0.01-1.2 parts of inorganic pigment, 0.06-0.2 part of surfactant, 0.02-0.15 part of retarder, 0.5-3.0 parts of brightener and 0.4-1.0 part of wood fiber. The invention has the characteristics of rich colors and light weight of the organic coating, and has the advantage of good durability of the inorganic material.
Description
Technical Field
The invention relates to the field of building materials, in particular to dry-mixed colored waterproof dustproof mortar and a preparation method thereof.
Background
The materials of the exterior wall finishing layer on the market at present comprise various materials such as paint, real stone paint, porcelain facing brick, marble, granite, metal, glass curtain wall, cement-based decorative mortar and the like. The installation process of marble, granite, metal, glass curtain wall and other materials is complex, the cost is high, and the safety and reliability of the porcelain facing brick are poor, so the facing of the building is mostly made of paint. However, the weather resistance of the coating is poor, the durability is not enough, and the coating is difficult to satisfy developers and owners. Therefore, it is necessary to develop a wall material which is easy to install, low in cost, waterproof, dustproof, weather-resistant and durable.
Facing mortar mainly takes imitation bricks at present. With the development of technology, the technology of facing mortar is also updated, and the most typical technological progress is from the traditional type of portland cement as a single cementitious material to a mixed gel system.
At present, the facing mortar mainly comprises the following components:
1. the conventional ordinary portland cement is used as a main inorganic cementing material, and the surface of the facing mortar is usually required to be coated with paint;
2. the ternary system is a composite gelled material consisting of CAC, POP and gypsum to reduce efflorescence and color difference, and the surface of the facing mortar is not coated with paint but needs finish treatment, namely, the water resistance is poor;
3. the low-cement common silicon system reduces the efflorescence, color difference and poor water resistance by reducing the mixing amount of common Portland cement and adding an alkali inhibitor, and needs finish treatment.
Therefore, the existing color facing mortar is still immature in technology, cannot find a balance point for inhibiting efflorescence, color difference, water resistance and flexibility, and cannot enable the coating to have good water resistance and flexibility without efflorescence and color difference.
Disclosure of Invention
The invention provides dry-mixed colorful waterproof and dustproof mortar, which not only has the decoration of paint, but also has the waterproof and dustproof performance of the waterproof mortar and the durability of concrete.
The invention is realized by the following technical scheme:
scheme I)
The dry-mixed colorful waterproof dustproof mortar is mainly prepared from the following components in parts by mass:
further, the modified water repellent is mainly prepared from the following raw materials: sodium hydroxide, methyl silicic acid, inorganic salt and an auxiliary agent;
wherein the molar ratio of the sodium hydroxide to the methyl silicic acid to the inorganic salt is 2:1:1, and the mass percentage of the auxiliary agent in the total raw materials is 0.02-0.1%. By adopting the scheme, the modified water repellent has the characteristics of water resistance and dust prevention.
The inorganic salt is any one of chloride or sulfate.
Preferably, the modified water repellent is prepared by the following steps:
synthesis of sodium methyl silicate: dissolving sodium hydroxide in 3 times of water, adding methylsilicic acid and adjuvant, reacting at 90-150 deg.C, and filtering to remove impurities to obtain clear solution;
② synthesizing methylsilicate: adding inorganic salt into the solution prepared in the step I, fully reacting to generate a white paste, and finishing the reaction when the pH value of the paste is between 6 and 8;
thirdly, drying: drying the paste obtained in the step II, grinding and packaging.
Scheme two)
The preparation method of the dry-mixed colorful waterproof dustproof mortar comprises the following steps:
adding 25-35 parts of white cement, 40-55 parts of quartz sand, 10-25 parts of heavy calcium carbonate, 0.6-1.5 parts of redispersible latex powder, 0.4-1 part of modified water repellent, 0.01-0.05 part of starch ether, 0.06-0.15 part of hydroxypropyl cellulose ether, 0.01-1.2 parts of inorganic pigment, 0.06-0.2 part of surfactant, 0.02-0.15 part of retarder, 0.5-3.0 parts of brightener and 0.4-1.0 part of wood fiber into a stirrer, and uniformly stirring.
Compared with the prior art, the invention has the following beneficial effects:
the organic coating has the characteristics of rich colors and light weight, and simultaneously has the advantage of good durability of inorganic materials.
The invention has good air permeability and hydrophobicity, can form a colorful outer wall decoration system with a breathing function, has the functions of moisture prevention and seepage prevention due to the good hydrophobic function, and is particularly suitable for buildings with higher requirements on hydrophobic air permeability.
The present invention uses inorganic material as main material and the coating has excellent alkali resistance, stain resistance and impact resistance. Because of high air permeability, the mortar can avoid indoor moisture and mildew, and the service life of the mortar for the external wall made of the mortar is more than 30 years.
The raw materials of the invention are all natural mineral materials, do not contain volatile organic compounds such as free formaldehyde, benzene and the like, and are nontoxic, tasteless and environment-friendly products. The pigment is natural iron oxide mineral pigment, so the weather resistance and the color retention are very excellent, and the building can be completely protected from being corroded and damaged by natural environment, industrial waste gas and microorganisms, thereby prolonging the service life of the building and effectively reducing the resource waste caused by secondary decoration.
The invention has good elasticity and low contractibility, is equivalent to forming an elastic waterproof heat-insulating layer on the appearance of a building, can not crack due to the alternate change of cold and heat in the weather after coating, and can bear the tiny cracks of a wall body. The coating has a thickness of more than 1.5-2.5 mm, so that the waterproof and anti-seepage effect is particularly good, and the coating is resistant to pressure and collision, does not fall off, and has particular toughness.
The invention has high construction speed, improves the construction efficiency by 100 percent compared with the tile pasting method, has 50 percent lower price compared with the traditional tile pasting method, and is equal to the construction of high-quality paint. In addition, the decorative mortar material is light, so that the load of a building structure can be reduced, the building structure can not fall off, and the falling and smashing accidents of the ceramic tiles are avoided. The decorative mortar has integrity, no gap is generated, water can be prevented from permeating into a wall structure, and the service life of a building structure can be prolonged.
Detailed Description
The present invention is further described below with reference to examples. It will be understood by those skilled in the art that the following examples are not intended to limit the scope of the present invention, and that any modifications and variations based on the present invention are within the scope of the present invention.
Example 1
The dry-mixed colorful waterproof dustproof mortar is mainly prepared from the following components in parts by mass:
white cement 25 parts
55 parts of quartz sand
19 parts of heavy calcium carbonate
0.6 part of redispersible latex powder
0.4 portion of modified water repellent
Starch ether 0.01 part
0.15 part of hydroxypropyl cellulose ether
0.01 part of inorganic pigment
0.06 part of surfactant
0.02 part of retarder
Whitening agent 0.5 parts
0.4 part of wood fiber.
The modified water repellent is mainly prepared from the following raw materials: sodium hydroxide, methyl silicic acid, inorganic salt and an auxiliary agent;
wherein the molar ratio of the sodium hydroxide to the methyl silicic acid to the inorganic salt is 2:1:1, and the mass percentage of the auxiliary agent in the total raw materials is 0.03%. By adopting the scheme, the modified water repellent has the characteristics of water resistance and dust prevention.
The inorganic salt is any one of chloride or sulfate, and can be potassium chloride, zinc chloride, magnesium sulfate, zinc sulfate or potassium sulfate.
The adjuvant described in this example was a model a-306 defoamer from xingpo chemical building materials ltd, suzhou.
Preferably, the modified water repellent is prepared by the following steps:
synthesis of sodium methyl silicate: firstly, dissolving sodium hydroxide in water (the mass ratio of the sodium hydroxide to the water is 1:3), then adding methyl silicic acid and an auxiliary agent to fully react at the temperature of 100 ℃, and then filtering to remove impurities to obtain a clear solution;
② synthesizing methylsilicate: adding inorganic salt into the solution prepared in the step I, fully reacting to generate a white paste, and finishing the reaction when the pH value of the paste is between 6 and 8;
thirdly, drying: drying the paste obtained in the step II, grinding and packaging.
Scheme two)
The preparation method of the dry-mixed colorful waterproof dustproof mortar comprises the following steps:
adding white cement, quartz sand, ground calcium carbonate, redispersible latex powder, a modified water repellent, starch ether, hydroxypropyl cellulose ether, inorganic pigment, a surfactant, a retarder, a whitening agent and wood fiber into a stirrer and uniformly stirring.
Example 2
The dry-mixed colorful waterproof dustproof mortar is mainly prepared from the following components in parts by mass:
white cement 35 parts
40 parts of quartz sand
23 parts of heavy calcium carbonate
1.5 parts of redispersible latex powder
0.7 portion of modified water repellent
Starch ether 0.05 part
0.06 part of hydroxypropyl cellulose ether
1.2 parts of inorganic pigment
0.2 portion of surfactant
0.15 part of retarder
Whitening agent 3.0 parts
1.0 part of wood fiber.
Further, the modified water repellent is mainly prepared from the following raw materials: sodium hydroxide, methyl silicic acid, inorganic salt and an auxiliary agent;
wherein the molar ratio of the sodium hydroxide to the methyl silicic acid to the inorganic salt is 2:1:1, and the mass percentage of the auxiliary agent in the total raw materials is 0.03%. By adopting the scheme, the modified water repellent has the characteristics of water resistance and dust prevention.
The inorganic salt is any one of chloride or sulfate.
The adjuvant described in this example was a model a-306 defoamer from xingpo chemical building materials ltd, suzhou.
Preferably, the modified water repellent is prepared by the following steps:
synthesis of sodium methyl silicate: firstly, dissolving sodium hydroxide in water (the mass ratio of the sodium hydroxide to the water is 1:3), then adding methyl silicic acid and an auxiliary agent to fully react at the temperature of 90 ℃, and then filtering to remove impurities to obtain a clear solution;
② synthesizing methylsilicate: adding inorganic substances into the solution prepared in the step I, fully reacting to generate a white paste, and finishing the reaction when the pH value of the paste is between 6 and 8;
thirdly, drying: drying the paste obtained in the step II, grinding and packaging.
Scheme two)
The preparation method of the dry-mixed colorful waterproof dustproof mortar comprises the following steps:
accurately weighing white cement, quartz sand, heavy calcium carbonate, redispersible latex powder, a modified water repellent, starch ether, hydroxypropyl cellulose ether, inorganic pigment, a surfactant, a retarder, a whitening agent and wood fiber, adding into a stirrer, and uniformly stirring.
Example 3
The dry-mixed colorful waterproof dustproof mortar is mainly prepared from the following components in parts by mass:
30 portions of white cement
48 parts of quartz sand
20 portions of heavy calcium carbonate
1.0 part of redispersible latex powder
0.7 portion of modified water repellent
Starch ether 0.03 portion
0.10 part of hydroxypropyl cellulose ether
0.6 part of inorganic pigment
0.1 part of surfactant
0.08 portion of retarder
Whitening agent 2.0 parts
0.7 part of wood fiber.
Further, the modified water repellent is mainly prepared from the following raw materials: sodium hydroxide, methyl silicic acid, inorganic salt and an auxiliary agent;
wherein the molar ratio of the sodium hydroxide to the methyl silicic acid to the inorganic salt is 2:1:1, and the mass percentage of the auxiliary agent in the total raw materials is 0.03%. By adopting the scheme, the modified water repellent has the characteristics of water resistance and dust prevention.
The inorganic salt is any one of chloride or sulfate.
The adjuvant described in this example was a model a-306 defoamer from xingpo chemical building materials ltd, suzhou.
Preferably, the modified water repellent is prepared by the following steps:
synthesis of sodium methyl silicate: firstly, dissolving sodium hydroxide in water (the mass ratio of the sodium hydroxide to the water is 1:3), then adding methyl silicic acid and an auxiliary agent, fully reacting at the temperature of 150 ℃, and then filtering to remove impurities to obtain a clear solution;
② synthesizing methylsilicate: adding inorganic substances into the solution prepared in the step I, fully reacting to generate a white paste, and finishing the reaction when the pH value of the paste is between 6 and 8;
thirdly, drying: drying the paste obtained in the step II, grinding and packaging.
The preparation method of the dry-mixed colorful waterproof dustproof mortar comprises the following steps:
adding white cement, quartz sand, ground calcium carbonate, redispersible latex powder, a modified water repellent, starch ether, hydroxypropyl cellulose ether, inorganic pigment, a surfactant, a retarder, a whitening agent and wood fiber into a stirrer and uniformly stirring.
The white cement described in the above examples was P.W42.5 white Portland cement from Yu rabbit cement Ltd in Jiangxi; the quartz sand adopts a Pu Tian quartz sand factory with the specification of 20-200 meshes; heavy calcium carbonate adopts Fujian Zhangping 325 meshes; the redispersible latex powder adopts Shandong Dakang; the modified water repellent adopts PUTIANZEBA ZSJ-2 type; the starch ether is Fandakang; the viscosity of the hydroxypropyl cellulose ether is 10 ten thousand of that of the Fandakang; the inorganic pigment is Deqing Yifan pigment; the surfactant is SMF-1013 of Xingbang chemical building materials Co., Ltd. of Suzhou; the retarder adopts Beijing Liheng lignocellulose technology development center TB 1601; the whitening agent adopts ZR-940 of Jiangsu Zhentiita chemical Co., Ltd; the wood fiber is yellow pure wood fiber in Hebei Yicheng.
The mortar is sprayed according to the following modes: the slurry is sprayed twice, one time is respectively carried out horizontally and vertically, the pressure of an air pump is kept at 6-8kg/cm2, the thickness is controlled during construction, and phenomena of leakage spraying, flowing and falling, bottom penetration and unevenness are prevented. The temperature is not lower than 5 ℃ during spraying, and the wind power is below 5 grade, so that construction in rainy days is avoided; when the humidity is less than 50%, the surface drying time of the dry-mixed exterior wall color waterproof mortar is 2 hours, and the actual drying time is 24 hours.
When spraying, the muzzle is perpendicular to the wall surface and slightly inclines upwards, and the distance between the muzzle and the wall surface is 300-350 mm. When spraying for the first time, slowly moving the spray gun from left to right in parallel; and when spraying for the second time, vertically moving from the starting end up and down, and paying attention to uniform thickness during spraying. The caliber of a spray gun nozzle can be adjusted between 3 and 10mm according to the thickness of the dry-mixed exterior wall color waterproof mortar, so as to achieve smooth discharging and smooth spraying;
if the color of the dividing line has special requirements, the sealing primer is prepared into corresponding color in advance, and the outer heat-insulating foundation wall is coated once by rolling, so that the coating leakage is avoided;
the decorative paper used for dividing the grids needs to be removed in time after being coated so as to prevent the colored waterproof mortar of the dry-mixed exterior wall from being hard to be removed or prevent the decorative surface from being damaged due to the self-falling of the decorative paper;
the mortar is smeared according to the following modes: the smearing process adopts the construction of an ash supporting plate and a trowel. When in smearing, the thickness is controlled according to the design requirements, the smearing surface is smooth, and the phenomena of bottom penetration and falling are avoided. The decorative surface needing to be rubbed with patterns needs to be balanced integrally;
when the dry-mixed exterior wall color waterproof mortar is not completely dried, floating dust on the surface and burrs of sand grains around the surface can be ground by using tools such as a hair roller and the like, so that the aesthetic feeling of the dry-mixed exterior wall color waterproof mortar is improved.
TABLE 1 comparison of the properties of the conventional coating, the real stone paint decorative material and the dry-mixed color waterproof and dustproof mortar of the invention
Claims (5)
1. The dry-mixed colorful waterproof dustproof mortar is characterized in that: the composite material is mainly prepared from the following raw materials in parts by mass:
2. the dry-mixed colored waterproof and dustproof mortar according to claim 1, wherein:
the modified water repellent is mainly prepared from the following raw materials: sodium hydroxide, methyl silicic acid, inorganic salt, auxiliary agent and water;
wherein the molar ratio of the sodium hydroxide to the methyl silicic acid to the inorganic salt is 2-3:1:1-1.5, and the mass percentage of the auxiliary agent in the total raw materials is 0.02-0.1%.
3. The dry-mixed colored waterproof and dustproof mortar according to claim 2, wherein: the inorganic salt is any one of chloride or sulfate.
4. The dry-mixed colored waterproof and dustproof mortar according to claim 2, wherein: the modified water repellent is prepared by the following steps:
synthesis of sodium methyl silicate: firstly, dissolving sodium hydroxide in water, then adding methyl silicic acid and an auxiliary agent, fully reacting at the temperature of 90-150 ℃, and then filtering to remove impurities to obtain a clear solution;
② synthesizing methylsilicate: adding inorganic salt into the solution prepared in the step I, fully reacting to generate a white paste, and finishing the reaction when the pH value of the paste is between 6 and 8;
thirdly, drying: drying the paste obtained in the step II, grinding and packaging.
5. The method for preparing the dry-mixed colored waterproof and dustproof mortar according to any one of claims 1 to 4, wherein the method comprises the following steps: the method comprises the following steps:
adding 25-35 parts of white cement, 40-55 parts of quartz sand, 10-25 parts of heavy calcium carbonate, 0.6-1.5 parts of redispersible latex powder, 0.4-1 part of modified water repellent, 0.01-0.05 part of starch ether, 0.06-0.15 part of hydroxypropyl cellulose ether, 0.01-1.2 parts of inorganic pigment, 0.06-0.2 part of surfactant, 0.02-0.15 part of retarder, 0.5-3.0 parts of brightener and 0.4-1.0 part of wood fiber into a stirrer, and uniformly stirring to obtain the water-based paint.
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| CN201910506926.0A CN111574140A (en) | 2019-06-12 | 2019-06-12 | Dry-mixed color waterproof dustproof mortar and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921288A (en) * | 2010-07-23 | 2010-12-22 | 朱光皓 | Pasty high-efficiency methyl silanol potassium sodium waterproof agent and preparation method thereof |
| CN102531490A (en) * | 2011-12-19 | 2012-07-04 | 河南省德嘉丽科技开发有限公司 | Ecological low cement-based finishing mortar |
| CN104016633A (en) * | 2014-05-29 | 2014-09-03 | 安徽梦谷纤维材料科技有限公司 | Exterior wall color surface decoration mortar and preparation method thereof |
-
2019
- 2019-06-12 CN CN201910506926.0A patent/CN111574140A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921288A (en) * | 2010-07-23 | 2010-12-22 | 朱光皓 | Pasty high-efficiency methyl silanol potassium sodium waterproof agent and preparation method thereof |
| CN102531490A (en) * | 2011-12-19 | 2012-07-04 | 河南省德嘉丽科技开发有限公司 | Ecological low cement-based finishing mortar |
| CN104016633A (en) * | 2014-05-29 | 2014-09-03 | 安徽梦谷纤维材料科技有限公司 | Exterior wall color surface decoration mortar and preparation method thereof |
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