CN112341125B - Preparation method of anti-whiskering cement color decoration mortar - Google Patents
Preparation method of anti-whiskering cement color decoration mortar Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
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- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
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- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/166—Macromolecular compounds comprising sulfonate or sulfate groups obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
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- C08G12/38—Ureas; Thioureas and melamines
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Abstract
The invention relates to the field of building material preparation, in particular to a preparation method of anti-whiskering cement color decorative mortar; according to the invention, the modified lithium slag and the modified melamine water reducer are added into the cement-based colored decorative mortar, and the addition of the two components can effectively prevent the occurrence of the efflorescence phenomenon of the material, so that the decorative mortar which is free of efflorescence and has good mechanical properties and constructability is prepared; the cement colorful decorative mortar has strong bonding force with a base layer, and has various colors and shapes, thereby meeting the aesthetic requirements of different groups; the construction is convenient, the coating can be smeared, rolled and even sprayed, the construction time is saved, and the advantages of the ceramic tile are greater especially on the difficult construction parts such as internal and external corners; the durability is good, and the phenomena of hollowing and peeling can not occur; the manufacturing cost and the production energy consumption are both very low, and the method has great economic and environmental protection values.
Description
Technical Field
The invention relates to the field of building material preparation, in particular to a preparation method of a whiskering-resistant cement color decorative mortar.
Background
The cement-based colored decorative mortar has the advantages of stable performance, safety, durability, convenient construction, environmental protection and the like, and becomes the future development direction of building wall decorative materials in China.
CN107640925A discloses MH series non-cement-based colored decorative mortar and a processing technology thereof, which belong to the technical field of new decorative material processing. It mainly comprises the following components in unit volume: 52-58 kg of quartz sand, 8-12 kg of ash calcium powder, 9-18 kg of heavy calcium carbonate, 6-8 kg of light calcium carbonate, 25-40 kg of rubber powder, 0.5-1 kg of flame retardant, 0.35-0.45 kg of thixotropic lubricant, 0-3 kg of pigment and 0.1-0.6 kg of antifreeze. The beneficial effects of the invention are: after the preparation method and the processing technology are used for preparation, the problem that the construction of the outer wall cannot be carried out due to low temperature in the early winter in the north is solved; the lap joint has no color difference, so that local repair is convenient; the dry powder is convenient to store and transport, and saves manpower, material resources and financial resources; compared with the real stone paint, the dosage per square is greatly reduced.
CN102464480A discloses color STUCCO wall decoration mortar, which comprises the following components: portland cement, aluminate cement, anhydrite, quartz sand, redispersible latex powder, lignocellulose, hydroxypropyl methyl cellulose, a water repellent and an iron oxide pigment; also discloses a construction process of the color STUCCO wall decoration mortar, which comprises the following steps: cleaning a wall base surface; leveling a wall base plane by using interface mortar; preparing colorful STUCCO wall decoration mortar; leveling color STUCCO wall decoration mortar on the leveled interface mortar; and (6) coating protective paint. The invention aims to provide the colorful STUCCO wall decoration mortar and the construction process thereof, which can very simply and conveniently reproduce colorful fair-faced concrete layers on different base planes by adopting the colorful STUCCO wall decoration mortar, and the cement color cannot be damaged due to the high-alkali environment formed in the concrete pouring process.
CN111268991A provides a compound high color-retention color decorative mortar, which comprises the following components in parts by weight: 10-12 parts of high-alumina cement, 5-7 parts of white cement, 5-7 parts of alpha high-strength gypsum, 3-4 parts of polyvinylidene fluoride resin powder, 0.1-0.2 part of a water repellent, 0.1-0.2 part of an alkali-resistant inhibitor, 0.2-0.3 part of hydroxypropyl methyl cellulose, 0.1-0.15 part of tartaric acid, 0.5-0.8 part of wood fiber, 5-10 parts of 200-mesh quartz powder, 45-50 parts of 70-140-mesh quartz sand and 10-20 parts of 40-70-mesh quartz sand.
Soluble alkali in the mortar is a source of efflorescence of the material, and the cement color decoration mortar prepared by the invention and the prior patent has the problems of efflorescence, easy alkali return, easy fading, poor weather resistance and the like, thereby seriously restricting the application and popularization of the cement color decoration mortar.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of the anti-whiskering cement color decorative mortar.
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 300 parts by mass of cement, 180 parts by mass of 120-parts by mass of heavy calcium carbonate, 600 parts by mass of 450-parts by mass of river sand, 0.8-2.1 parts by mass of water reducing agent, 6-12 parts by mass of latex powder and 14-24 parts by mass of pigment, stirring for 30-60min under anhydrous condition, then adding 180 parts by mass of 100-parts by mass of water, stirring uniformly, adding 1.5-4.5 parts by mass of water repellent potassium methyl silicate, 0.1-0.5 part by mass of hydroxypropyl methyl cellulose and 0.2-0.4 part by mass of defoaming agent, stirring continuously for 5-10min, adding 30-100 parts by mass of modified lithium slag and 40-60 parts by mass of gypsum powder, and stirring uniformly to obtain the anti-efflorescence color cement mortar decoration.
The modified lithium slag is prepared by the following method:
according to the mass portion, 50-100 portions of lithium slag, 0.1-0.8 portion of triethanolamine, 0.1-0.5 portion of triethylamine and 21-58x10 -3 Uniformly mixing parts of cashew base ionic liquid active agent and 0.1-0.5 part of acetone sulfonate formaldehyde condensate, adding 70-120 parts of water, uniformly mixing and stirring, transferring into a wet grinder to wet-grind for 1-5h, and dehydrating to obtain the modified lithium slag.
The water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 55-68 parts by mass of melamine, 10-18 parts by mass of urea and 26-58 parts by mass of 30-40% glyoxal aqueous solution into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 8.5-9.5 by using 0.01-0.05mol/L ammonia water, controlling the temperature to be 75-90 ℃, reacting for 30-60min, adding 2.3-5.8 parts by mass of sodium bisulfite and 0.5-3.2 parts by mass of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 9.5-10.5, and continuously reacting for 60-120min to obtain the modified melamine water reducer.
The cashew nut-based ionic liquid active agent is prepared by the following method:
according to the mass parts, under the protection of nitrogen, 30-50 parts of epoxy chloropropane, 78-92 parts of cardanol, 2-5 parts of tetrabutylammonium bromide and 1-4 parts of potassium carbonate are stirred for 10-15 hours at 80-90 ℃, then 0.4-1.2 parts of (benzo-18-crown-6) -4' -amine and 1.2-3.2 parts of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH value of the system is controlled to be more than 10, and the mixture is stirred for 3-5 hours at the temperature of 100-120 ℃. Cooling, and distilling under reduced pressure to remove the solvent to obtain the cashew base ionic liquid activator.
1-aminopropyl-3-methylimidazole bromine salt participates in the reaction as the amino ionic liquid, and the partial reaction equation is shown as follows:
the reaction of epichlorohydrin and cardanol, and then the reaction of (benzo-18-crown-6) -4' -amine is carried out, and the partial reaction equation is shown as follows:
the cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 2.5-4.8: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow or iron oxide red.
The latex powder is vinyl acetate/ethylene versatate copolymer powder or ethylene/vinyl acetate copolymer powder.
According to the preparation method of the anti-efflorescence cement color decoration mortar, the modified lithium slag and the modified melamine water reducing agent are added into the cement-based color decoration mortar, the two components are added, the efflorescence phenomenon of the material can be effectively prevented, and the decoration mortar which is free of efflorescence and good in mechanical property and constructability is prepared; the modified melamine water reducing agent can reduce the amount of soluble alkali and carriers thereof in the early stage of mortar,
the modified lithium slag not only can inhibit the efflorescence effect, but also can effectively reduce the early shrinkage value of cement mortar and enhance the crack resistance of mortar;
the cement colorful decorative mortar has strong bonding force with a base layer, and has various colors and shapes, thereby meeting the aesthetic requirements of different groups; the construction is convenient, the coating can be smeared, rolled and even sprayed, the construction time is saved, and the advantages of the ceramic tile are greater especially on the difficult construction parts such as internal and external corners; the durability is good, and the phenomena of hollowing and peeling can not occur; the manufacturing cost and the production energy consumption are very low, and the method has great economic and environmental protection values.
Drawings
Fig. 1 is a fourier infrared spectrum of a sample of cashew-based ionic liquid active agent prepared in example 3:
at 2955cm -1 The telescopic absorption peak of hydrocarbon exists nearby and is 1610/1498cm -1 The absorption peak of benzene ring is 1658cm -1 An absorption peak of 1252cm is present near the carbon-carbon double bond -1 A telescopic absorption peak of a phenyl ether bond exists nearby, so that cardanol participates in the reaction; at 3302cm -1 The absorption peak of hydroxyl group is at 696cm -1 An out-of-plane bending absorption peak of hydroxyl exists nearby, so that epichlorohydrin participates in the reaction; at 3087cm -1 An antisymmetric telescopic absorption peak of ammonium ions exists nearby, and is 1408cm -1 An asymmetric variable-angle absorption peak of ammonium ions exists nearby, which indicates that benzyltriethylammonium chloride participates in the reaction; at 960cm -1 An absorption peak of a carbon-nitrogen single bond exists nearby, which indicates that the 1-aminopropyl-3-methylimidazole bromine salt participates in the reaction; at 1179cm -1 NearbyThe presence of an absorption peak for the ether bond indicates that (benzo-18-crown-6) -4-ylamine is involved in the reaction.
Detailed Description
The invention is further illustrated by the following specific examples:
in the experiment, the drying shrinkage rate of the mortar is tested according to section 12 in JGJ/T70-2009 mortar basic performance test method; scraping the prepared mortar on a calcium silicate board with the size of 200mm multiplied by 5mm by a spatula, curing for 7 days, placing the cured sample in 50ml of deionized water with the molding surface facing downwards, collecting the leachate, drying and weighing in a 100 ℃ baking oven after 4 hours, and testing the saltpetering performance of the mortar.
Example 1
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 200kg of cement, 120kg of heavy calcium carbonate, 450kg of river sand, 0.8kg of water reducing agent, 6kg of latex powder and 14kg of pigment, stirring for 30min under anhydrous condition, then adding 100kg of water, adding 1.5kg of water repellent methyl potassium silicate, 0.1kg of hydroxypropyl methyl cellulose and 0.2kg of defoaming agent after stirring uniformly, continuing stirring for 5min, adding 30kg of modified lithium slag and 40kg of gypsum powder, and stirring uniformly to obtain the anti-whiskering cement color decoration mortar.
The modified lithium slag is prepared by the following method:
50kg of lithium slag, 0.1kg of triethanolamine, 0.1kg of triethylamine, 2.1g of cashew base ionic liquid activator and 0.1kg of acetone sulfonate formaldehyde condensate are uniformly mixed, 70kg of water is added, the mixture is uniformly mixed and stirred, and then the mixture is transferred into a wet grinder to be wet-milled for 1 hour and then is dehydrated to obtain the modified lithium slag.
The water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 55kg of melamine, 10kg of hydroxyl urea and 26kg of glyoxal aqueous solution with the mass percentage content of 30% into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 8.5 by using 0.01mol/L ammonia water, controlling the temperature to rise to 75 ℃, reacting for 30min, adding 2.3kg of sodium bisulfite and 0.5kg of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 9.5, and continuing to react for 60min to obtain the modified melamine water reducer.
The cashew nut-based ionic liquid active agent is prepared by the following method:
30g of epichlorohydrin, 78g of cardanol, 2g of tetrabutylammonium bromide and 1g of potassium carbonate are stirred at 80 ℃ for 10 hours under the protection of nitrogen, then 0.4g of (benzo-18-crown-6) -4' -ylamine and 1.2g of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH of the system is controlled to be more than 10, and the mixture is stirred at 100 ℃ for 3 hours. Cooling, and distilling under reduced pressure to remove the solvent to obtain the cashew base ionic liquid activator.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 2.5: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow.
The latex powder is vinyl acetate/ethylene versatate copolymer powder.
The cement color decorative mortar prepared by the experiment has the drying shrinkage value of 187 multiplied by 10 -6 The amount of the pantobase was 0.0496 g.
Example 2
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 240kg of cement, 150kg of heavy calcium carbonate, 550kg of river sand, 1.4kg of water reducing agent, 9kg of latex powder and 20kg of pigment, stirring for 45min under anhydrous condition, then adding 150kg of water, adding 2.5kg of water repellent methyl potassium silicate, 0.2kg of hydroxypropyl methyl cellulose and 0.3kg of defoaming agent after stirring uniformly, continuing stirring for 8min, adding 70kg of modified lithium slag and 50kg of gypsum powder, and stirring uniformly to obtain the anti-whiskering cement color decoration mortar.
The modified lithium slag is prepared by the following method:
and (2) uniformly mixing 80kg of lithium slag, 0.3kg of triethanolamine, 0.3kg of triethylamine, 3.4g of cashew-based ionic liquid active agent and 0.3kg of acetone sulfonate formaldehyde condensate, adding 90kg of water, uniformly mixing and stirring, transferring into a wet grinder, wet grinding for 2 hours, and dehydrating to obtain the modified lithium slag.
The water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 62kg of melamine, 14kg of hydroxyurea and 37kg of glyoxal aqueous solution with the mass percent content of 35% into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 9 by using 0.03mol/L ammonia water, controlling the temperature to rise to 80 ℃, reacting for 45min, adding 3.8kg of sodium bisulfite and 2.1kg of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 10, and continuing to react for 90min to obtain the modified melamine water reducer.
The cashew nut-based ionic liquid active agent is prepared by the following method:
under the protection of nitrogen, 35g of epichlorohydrin, 90g of cardanol, 4g of tetrabutylammonium bromide and 2g of potassium carbonate are stirred at 84 ℃ for 12 hours, then 0.6g of (benzo-18-crown-6) -4' -ylamine and 1.9g of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH of the system is controlled to be more than 10, and the mixture is stirred at 110 ℃ for 4 hours. Cooling, and distilling under reduced pressure to remove the solvent to obtain the cashew base ionic liquid activator.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 3.6: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron oxide red.
The latex powder is ethylene/vinyl acetate copolymer powder.
The cement color decoration mortar prepared by the experiment has the drying shrinkage value of 154 multiplied by 10 -6 The amount of the pantobase was 0.0438 g.
Example 3
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 300kg of cement, 180kg of heavy calcium carbonate, 600kg of river sand, 2.1kg of water reducing agent, 12kg of latex powder and 24kg of pigment, stirring for 60min under anhydrous condition, then adding 180kg of water, adding 4.5kg of water repellent methyl potassium silicate, 0.5kg of hydroxypropyl methyl cellulose and 0.4kg of defoaming agent after stirring uniformly, continuing stirring for 10min, adding 100kg of modified lithium slag and 60kg of gypsum powder, and stirring uniformly to obtain the anti-whiskering cement color decoration mortar.
The modified lithium slag is prepared by the following method:
100kg of lithium slag, 0.8kg of triethanolamine, 0.5kg of triethylamine, 5.8g of cashew base ionic liquid activator and 0.5kg of acetone sulfonate formaldehyde condensate are uniformly mixed, 120kg of water is added, the mixture is uniformly mixed and stirred, and then the mixture is transferred into a wet grinder to be wet-milled for 5 hours and then is dehydrated to obtain the modified lithium slag.
The water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 68kg of melamine, 18kg of hydroxyl urea and 58kg of 40 mass percent aqueous solution of glyoxal into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 9.5 by using 0.05mol/L ammonia water, controlling the temperature to rise to 90 ℃, reacting for 60min, adding 5.8kg of sodium bisulfite and 3.2kg of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 10.5, and continuing to react for 120min to obtain the modified melamine water reducer.
Under the protection of nitrogen, 50g of epichlorohydrin, 92g of cardanol, 5g of tetrabutylammonium bromide and 4g of potassium carbonate are stirred at 90 ℃ for 15 hours, then 1.2g of (benzo-18-crown-6) -4' -ylamine and 3.2g of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH of the system is controlled to be more than 10, and the mixture is stirred at 120 ℃ for 5 hours. Cooling, and distilling under reduced pressure to remove the solvent to obtain the cashew-based ionic liquid activator.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 4.8: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow.
The latex powder is ethylene/vinyl acetate copolymer powder.
The drying shrinkage value of the cement color decorative mortar prepared by the experiment is 147 multiplied by 10 -6 The amount of pantobase is 0.0409 g.
Comparative example 1
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 200kg of cement, 120kg of heavy calcium carbonate, 450kg of river sand, 0.8kg of water reducing agent, 6kg of latex powder and 14kg of pigment, stirring for 30min under anhydrous condition, then adding 100kg of water, adding 1.5kg of water repellent methyl potassium silicate, 0.1kg of hydroxypropyl methyl cellulose and 0.2kg of defoaming agent after stirring uniformly, continuing stirring for 5min, adding 40kg of gypsum powder, and stirring uniformly to obtain the anti-whiskering cement color decorative mortar.
The water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 55kg of melamine, 10kg of hydroxyl urea and 26kg of glyoxal aqueous solution with the mass percentage content of 30% into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 8.5 by using 0.01mol/L ammonia water, controlling the temperature to rise to 75 ℃, reacting for 30min, adding 2.3kg of sodium bisulfite and 0.5kg of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 9.5, and continuing to react for 60min to obtain the modified melamine water reducer.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 2.5: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow.
The latex powder is vinyl acetate/ethylene versatate copolymer powder.
The drying shrinkage value of the cement color decoration mortar prepared by the experiment is 241 multiplied by 10 -6 The amount of pantobase was 0.0817 g.
Comparative example 2
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
200kg of cement, 120kg of heavy calcium carbonate, 450kg of river sand, 6kg of latex powder and 14kg of pigment are mixed and stirred for 30min under anhydrous condition, then 100kg of water is added, 1.5kg of water repellent methyl potassium silicate, 0.1kg of hydroxypropyl methyl cellulose and 0.2kg of defoaming agent are added after uniform stirring, 30kg of modified lithium slag and 40kg of gypsum powder are added after continuous stirring for 5min, and the anti-efflorescence cement color decorative mortar can be obtained after uniform stirring.
The modified lithium slag is prepared by the following method:
50kg of lithium slag, 0.1kg of triethanolamine, 0.1kg of triethylamine, 2.1g of cashew base ionic liquid activator and 0.1kg of acetone sulfonate formaldehyde condensate are uniformly mixed, 70kg of water is added, the mixture is uniformly mixed and stirred, and then the mixture is transferred into a wet grinder to be wet-milled for 1 hour and then is dehydrated to obtain the modified lithium slag.
The cashew nut-based ionic liquid active agent is prepared by the following method:
under the protection of nitrogen, 35g of epichlorohydrin, 90g of cardanol, 4g of tetrabutylammonium bromide and 2g of potassium carbonate are stirred at 84 ℃ for 12 hours, then 0.6g of (benzo-18-crown-6) -4' -ylamine and 1.9g of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH of the system is controlled to be more than 10, and the mixture is stirred at 110 ℃ for 4 hours. Cooling, and distilling under reduced pressure to remove the solvent to obtain the cashew base ionic liquid activator.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 2.5: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow.
The latex powder is vinyl acetate/ethylene versatate copolymer powder.
The drying shrinkage value of the cement color decoration mortar prepared by the experiment is 224 multiplied by 10 -6 The amount of the pantobase was 0.0762 g.
Comparative example 3
A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 200kg of cement, 120kg of heavy calcium carbonate, 450kg of river sand, 6kg of latex powder and 14kg of pigment, stirring for 30min under anhydrous condition, then adding 100kg of water, adding 1.5kg of water repellent methyl potassium silicate, 0.1kg of hydroxypropyl methyl cellulose and 0.2kg of defoaming agent after stirring uniformly, adding 40kg of gypsum powder after continuously stirring for 5min, and stirring uniformly to obtain the anti-whiskering cement color decorative mortar.
The cement is obtained by blending high-alumina cement and white cement according to the mass ratio of 2.5: 1.
The gypsum powder is anhydrous gypsum powder.
The pigment is iron yellow.
The latex powder is vinyl acetate/ethylene versatate copolymer powder.
The cement color decoration mortar prepared by the experiment has the drying shrinkage value of 314 multiplied by 10 -6 The amount of pantobase was 0.1127 g.
Claims (5)
1. A preparation method of anti-whiskering cement color decorative mortar mainly adopts the following scheme:
mixing 300 parts by mass of cement, 180 parts by mass of 120-180 parts by mass of heavy calcium carbonate, 600 parts by mass of river sand, 0.8-2.1 parts by mass of water reducing agent, 6-12 parts by mass of latex powder and 14-24 parts by mass of pigment, stirring for 30-60min under anhydrous condition, then adding 180 parts by mass of water with the mass of 100, stirring uniformly, adding 1.5-4.5 parts by mass of water repellent potassium methyl silicate, 0.1-0.5 part by mass of hydroxypropyl methyl cellulose and 0.2-0.4 part by mass of antifoaming agent, stirring continuously for 5-10min, adding 30-100 parts by mass of modified lithium slag and 40-60 parts by mass of gypsum powder, and stirring uniformly to obtain the anti-efflorescence cement color mortar decoration;
the modified lithium slag is prepared by the following method:
according to the mass parts, 50-100 parts of lithium slag, 0.1-0.8 part of triethanolamine, 0.1-0.5 part of triethylamine, 2.1-5.8 parts of cashew-based ionic liquid activator and 0.1-0.5 part of acetone sulfonate formaldehyde condensate are uniformly mixed, 70-120 parts of water is added, the mixture is uniformly mixed and stirred, and then the mixture is transferred into a wet grinder to be wet-ground for 1-5h and then is dehydrated to obtain the modified lithium slag;
the water reducing agent is a modified melamine water reducing agent and is prepared by the following method:
adding 55-68 parts by mass of melamine, 10-18 parts by mass of hydroxyurea and 26-58 parts by mass of 30-40% aqueous solution of glyoxal into a reaction kettle, uniformly stirring, adjusting the pH value of the solution to 8.5-9.5 by using 0.01-0.05mol/L ammonia water, controlling the temperature to be 75-90 ℃, reacting for 30-60min, adding 2.3-5.8 parts by mass of sodium bisulfite and 0.5-3.2 parts by mass of sodium metabisulfite into the reaction kettle, adjusting the pH value of the solution to 9.5-10.5, and continuously reacting for 60-120min to obtain the modified melamine water reducer;
the cashew nut-based ionic liquid active agent is prepared by the following method:
according to the mass parts, under the protection of nitrogen, 30-50 parts of epoxy chloropropane, 78-92 parts of cardanol, 2-5 parts of tetrabutylammonium bromide and 1-4 parts of potassium carbonate are stirred for 10-15 hours at 80-90 ℃, then 0.4-1.2 parts of (benzo-18-crown-6) -4' -amine and 1.2-3.2 parts of 1-aminopropyl-3-methylimidazolium bromide are added into a reaction kettle, the pH value of the system is controlled to be more than 10, the mixture is stirred for 3-5 hours at the temperature of 100-plus-material 120 ℃, cooled, and the solvent is removed through reduced pressure distillation, so that the cashew-based ionic liquid active agent is obtained.
2. The method for preparing the color decorative mortar of the anti-whiskering cement according to claim 1, wherein the cement is obtained by blending high alumina cement and white cement in a mass ratio of 2.5-4.8: 1.
3. The method for preparing the saltpetering-resistant cement color decorative mortar according to claim 1, wherein the gypsum powder is anhydrous gypsum powder.
4. The method for preparing the anti-efflorescence cement color decorative mortar according to claim 1, characterized in that the pigment is iron yellow or iron oxide red.
5. The method for preparing the anti-efflorescence cement color decorative mortar according to claim 1, characterized in that the latex powder is vinyl acetate/vinyl versatate copolymer powder or ethylene/vinyl acetate copolymer powder.
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| CN108863225A (en) * | 2018-07-26 | 2018-11-23 | 广东复特新型材料科技有限公司 | A kind of polychromy mortar |
| CN109517141A (en) * | 2018-10-11 | 2019-03-26 | 安徽大学 | Cardanol modified waterborne epoxy curing agent and preparation method thereof |
| CN111268991A (en) * | 2020-03-10 | 2020-06-12 | 浙江华德新材料有限公司 | Compound high-color-retention color decorative mortar |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863225A (en) * | 2018-07-26 | 2018-11-23 | 广东复特新型材料科技有限公司 | A kind of polychromy mortar |
| CN109517141A (en) * | 2018-10-11 | 2019-03-26 | 安徽大学 | Cardanol modified waterborne epoxy curing agent and preparation method thereof |
| CN111268991A (en) * | 2020-03-10 | 2020-06-12 | 浙江华德新材料有限公司 | Compound high-color-retention color decorative mortar |
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