CN110644732B - Spraying process of waterproof white stone paint - Google Patents
Spraying process of waterproof white stone paint Download PDFInfo
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- CN110644732B CN110644732B CN201910942756.0A CN201910942756A CN110644732B CN 110644732 B CN110644732 B CN 110644732B CN 201910942756 A CN201910942756 A CN 201910942756A CN 110644732 B CN110644732 B CN 110644732B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F263/00—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00
- C08F263/02—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00 on to polymers of vinyl esters with monocarboxylic acids
- C08F263/04—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00 on to polymers of vinyl esters with monocarboxylic acids on to polymers of vinyl acetate
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the technical field of exterior wall decorative materials, in particular to a spraying process of waterproof white stone paint, which comprises the following steps: (1) base layer treatment: cleaning broken slag and dirt on the wall; (2) scraping the filling material in batches; (3) setting a parting line, (4) spraying primer: spraying a layer of colored primer, wherein the color of the primer is consistent with that of the finish paint, and spraying black primer on the dividing line; (5) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, and spraying finish paint after ash removal; (6) spraying a finish paint: polishing finish paint after the finish paint is dried and solidified, then removing ash, and spraying finish paint; according to the invention, after the primer is sprayed, the primer is polished once, so that a base surface can be leveled, an isolation layer is formed, aging of the finish paint caused by water vapor and alkaline substances from the interior of the wall surface is avoided, and the surface roughness can be improved by polishing the primer, so that the finish paint is better combined with the primer.
Description
Technical Field
The invention relates to the technical field of exterior wall decorative materials, in particular to a spraying process of waterproof white stone paint.
Background
The stone paint is a synthetic resin emulsion sand wall type building paint which is prepared by taking natural granite, broken stone and stone powder as aggregate, taking synthetic resin emulsion as base materials and being assisted by a plurality of auxiliary agents, has the texture and the decoration effect of natural stone, and is deeply favored by vast owners and constructors in the decoration engineering of the outer wall of a high-rise building.
The spraying process flow of the real stone paint is as follows: the method comprises the steps of base layer treatment, batch scraping of filling materials, polishing, ash removal, rolling coating of primer, spraying of two side finishing paints and spraying of finishing paint, and as the primer adopts a rolling coating method, the roughness of the surface of the primer is smaller, the combination of the primer and the finishing paint is not facilitated, the thickness of the finishing paint needs to be increased in order to improve the combination degree of the primer and the finishing paint, the thickness of the finishing paint is increased, the waste of the coating is caused, and the cracking probability is increased.
Disclosure of Invention
The purpose of the invention is that: overcomes the defects in the prior art and provides a spraying process of the water-proof white stone paint with thin finish paint coating, low cracking rate and high adhesion.
In order to solve the technical problems, the invention adopts the following technical scheme:
a spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall;
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.1-2.5mm, drying, polishing once, and then removing ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2-3cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the color of the primer is consistent with that of the finish paint, and spraying black primer on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, and spraying finish paint after ash removal;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, then removing ash, and spraying the finish paint.
Further, the uneven broken slag on the wall in the step (1) is firstly polished once by using sand skin paper, and then is washed and dried by using clear water to scrape the filling material in batches.
Further, the ash cleaning operation in the steps (2), (5) and (6) is carried out by adopting clear water.
Further, the thickness of the primer in the step (4) is 0.08-0.2mm
Further, the thickness of the finishing paint in the step (5) is 1.2-1.5mm.
Further, the finishing paint comprises the following components in parts by mass: 10-15 parts of modified polyvinyl acetate emulsion, 0.6-0.8 part of vinyl pyrrolidone derivative film forming auxiliary agent, 0.12-0.28 part of modified cellulose ether, 0.12-0.18 part of DSX3290 thickener, 0.1-0.12 part of defoamer, 0.15-0.18 part of bactericide trichlorocarbanilide, 70-75 parts of color sand and 100 parts of water, wherein the pH value of the real stone paint is 9-10.
Further, the modified polyvinyl acetate emulsion is obtained by graft copolymerization of an organosilicon monomer and vinyl acetate in the presence of acrylic ester.
Further, the addition amount of the organic silicon monomer is 4.5-5.8% of the mass of the vinyl acetate.
Further, the modified cellulose ether is a polydimethylsilane modified cellulose ether.
Further, the molar ratio of polydimethylsilane to cellulose ether is 1:1.
The technical scheme of the invention has the beneficial effects that:
according to the invention, the wall body is divided into a plurality of blocks by arranging the dividing lines, so that the area of a single concrete waterproof layer can be reduced, the expansion and contraction or buckling deformation of the single concrete waterproof layer are reduced, and the generation of coating cracks can be effectively avoided. Meanwhile, the method is convenient to use the parting line as a boundary in construction, and the construction can be carried out more orderly. In addition, the parting line can also increase the aesthetic property of the outer facade of the building and does not appear too monotonous.
According to the invention, the primer is polished once after being sprayed, so that on one hand, the effect of flattening a base surface can be achieved, an isolation layer is formed, the aging of the finish paint caused by water vapor and alkaline substances from the interior of a wall surface is avoided, and on the other hand, the surface roughness can be improved by polishing the primer, so that the finish paint is better combined with the primer. Because the primer has good covering effect, the finish paint is not too thick, so that the waste of the finish paint is avoided, the cracking probability of the paint is reduced, and the spraying effect of the real stone paint is ensured.
According to the invention, the finish paint is polished again after being sprayed, so that the cured finish paint has a polished effect, and the finished paint can be beautiful and glossy after being sprayed, and looks the same as the polished natural marble.
According to the invention, the modified polyvinyl acetate emulsion obtained by graft copolymerization of the organosilicon monomer and the vinyl acetate is used as emulsion, and the organosilicon chain forging is added in the modified polyvinyl acetate emulsion, on one hand, the hydrophobic organosilicon chain segments are introduced into the molecular chains of the modified polyvinyl acetate, and meanwhile, the nonpolar silane groups on the organosilicon molecular side chains are arranged outwards in an oriented manner, so that the water-resistant effect is achieved, the water absorption rate of a real stone paint film is reduced, and the water-whitening resistance of the real stone paint film is effectively improved.
According to the invention, the modified polyvinyl acetate, the modified cellulose ether and the hydrophobic film forming auxiliary agent are used together, so that hydrophilic groups in true Dan Qimo are reduced, the hydrophobicity of a true stone paint film is improved, the water absorption of the true stone paint film after long-time rain washing can be remarkably reduced, and the water absorption, expansion and whitening are avoided.
Detailed Description
The invention will now be further described with reference to specific examples.
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall;
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.1-2.5mm, drying, polishing once, and then removing ash;
(3) Setting a parting line: the invention can reduce the area of a single concrete waterproof layer by dividing the wall into a plurality of blocks with the width of 2-3cm, thereby reducing the expansion and contraction or buckling deformation of the single concrete waterproof layer and effectively avoiding the generation of coating cracks. Meanwhile, the method is convenient to use the parting line as a boundary in construction, and the construction can be carried out more orderly. In addition, the parting line can also increase the aesthetic property of the outer facade of the building and does not appear too monotonous.
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the color of the primer is consistent with that of the finish paint, and spraying black primer on the dividing line; can play a role in flattening a basal plane, improve the adhesive strength, and form an isolation layer to avoid aging of the finishing paint caused by water vapor and alkaline substances from the interior of the wall surface.
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, and spraying finish paint after ash removal; according to the invention, the primer is polished once after being sprayed, so that on one hand, the effect of flattening a base surface can be achieved, an isolation layer is formed, the aging of the finish paint caused by water vapor and alkaline substances from the interior of a wall surface is avoided, and on the other hand, the surface roughness can be improved by polishing the primer, so that the finish paint is better combined with the primer. Because the primer has good covering effect, the finish paint is not too thick, so that the waste of the finish paint is avoided, the cracking probability of the paint is reduced, and the spraying effect of the real stone paint is ensured.
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, then removing ash, and spraying the finish paint. According to the invention, the finish paint is polished again after being sprayed, so that the cured finish paint has a polished effect, and the finished paint can be beautiful and glossy after being sprayed, and looks the same as the polished natural marble.
As a preferred implementation mode, in the step (1), the uneven broken slag on the wall is polished by the sand paper for one time, then the broken slag and the uneven surface of the wall are treated firstly after washing and drying by clean water to scrape the filling material, so that the flatness of the wall can be improved, the bonding strength between the primer and the wall can be improved, and the water resistance of the primer can be improved.
As a preferred implementation mode, the ash cleaning operation in the steps (2), (5) and (6) in the embodiment adopts clear water for flushing, the cost is low, and the crushed stone can be flushed, so that the flushing efficiency is higher.
As a preferred embodiment, the primer of step (4) in this example has a thickness of 0.08-0.2mm.
As a preferred embodiment, the thickness of the top coat in step (5) in this example is 1.2-1.5mm.
As a preferred embodiment, the composition of the mass parts of the top coat in this example is as follows: 10-15 parts of modified polyvinyl acetate emulsion, 0.6-0.8 part of vinyl pyrrolidone derivative film forming auxiliary agent, 0.12-0.28 part of modified cellulose ether, 0.12-0.18 part of DSX3290 thickener, 0.1-0.12 part of defoamer, 0.15-0.18 part of bactericide trichlorocarbanilide, 70-75 parts of color sand and 100 parts of water, wherein the pH value of the real stone paint is 9-10. According to the invention, the modified polyvinyl acetate, the modified cellulose ether and the hydrophobic film forming auxiliary agent are used together, so that hydrophilic groups in true Dan Qimo are reduced, the hydrophobicity of a true stone paint film is improved, the water absorption of the true stone paint film after long-time rain washing can be remarkably reduced, and the water absorption, expansion and whitening are avoided.
As a preferred embodiment, the modified polyvinyl acetate emulsion in this example is obtained by graft copolymerizing an organosilicon monomer with vinyl acetate in the presence of an acrylic acid ester. According to the invention, the modified polyvinyl acetate emulsion obtained by graft copolymerization of the organosilicon monomer and the vinyl acetate is used as emulsion, and the organosilicon chain forging is added in the modified polyvinyl acetate emulsion, on one hand, the hydrophobic organosilicon chain segments are introduced into the molecular chains of the modified polyvinyl acetate, and meanwhile, the nonpolar silane groups on the organosilicon molecular side chains are arranged outwards in an oriented manner, so that the water-resistant effect is achieved, the water absorption rate of a real stone paint film is reduced, and the water-whitening resistance of the real stone paint film is effectively improved. Preferably, the addition amount of the organosilicon monomer is 4.5-5.8% of the mass of the vinyl acetate.
As a preferred embodiment, the modified cellulose ether in this example is a polydimethylsilane modified cellulose ether, preferably, the molar ratio of polydimethylsilane to cellulose ether is 1:1. On one hand, the hydroxyl number in the cellulose ether is reduced, and on the other hand, the polarity in the cellulose ether molecule is further reduced by taking the polydimethylsilane as a hydrophobic group, and the hydrophilicity of the cellulose ether is reduced, so that the water resistance of the water-proof white stone paint is improved.
Example 1
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall; firstly grinding uneven broken slag on the wall once by using sand skin paper, then flushing and drying by using clear water, and then scraping and filling materials
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.1mm, drying, polishing once, and then flushing with clear water to remove ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the thickness of the primer is 0.08mm, the color of the primer is consistent with that of the finish paint, and black primer is sprayed on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, flushing with clear water to remove ash, and spraying finish paint; the thickness of the finishing paint is 1.2mm;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, flushing with clear water to remove ash, and spraying the finish paint.
The finishing paint comprises the following components in parts by mass: 10 parts of modified polyvinyl acetate emulsion, 0.6 part of vinyl pyrrolidone derivative film forming additive, 0.12 part of modified cellulose ether, 0.12 part of DSX3290 thickener, 0.1 part of defoamer, 0.15 part of bactericide trichlorocarbanilide, 70 parts of colored sand and 100 parts of water, wherein the pH value of the real stone paint is 9.0, the modified polyvinyl acetate emulsion is obtained by grafting and copolymerizing an organosilicon monomer and vinyl acetate in the presence of acrylic ester, the addition amount of the organosilicon monomer is 4.5% of the mass of vinyl acetate, the modified cellulose ether is polydimethylsilane modified cellulose ether, and the molar ratio of polydimethylsilane to the cellulose ether is 1:1.
Example 2
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall; firstly grinding uneven broken slag on the wall once by using sand skin paper, then flushing and drying by using clear water, and then scraping and filling materials
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.2mm, drying, polishing once, and then flushing with clear water to remove ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2.1cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the thickness of the primer is 0.1mm, the color of the primer is consistent with that of the finish paint, and black primer is sprayed on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, flushing with clear water to remove ash, and spraying finish paint; the thickness of the finishing paint is 1.3mm;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, flushing with clear water to remove ash, and spraying the finish paint.
The finishing paint comprises the following components in parts by mass: 10 parts of modified polyvinyl acetate emulsion, 0.6 part of vinyl pyrrolidone derivative film forming additive, 0.15 part of modified cellulose ether, 0.13 part of DSX3290 thickener, 0.1 part of defoamer, 0.15 part of bactericide trichlorocarbanilide, 70 parts of colored sand and 100 parts of water, wherein the pH value of the real stone paint is 9.0, the modified polyvinyl acetate emulsion is obtained by grafting and copolymerizing an organosilicon monomer and vinyl acetate in the presence of acrylic ester, the addition amount of the organosilicon monomer is 4.6 percent of the mass of vinyl acetate, the modified cellulose ether is polydimethylsilane modified cellulose ether, and the molar ratio of polydimethylsilane to the cellulose ether is 1:1.
Example 3
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall; firstly grinding uneven broken slag on the wall once by using sand skin paper, then flushing and drying by using clear water, and then scraping and filling materials
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.4mm, drying, polishing once, and then flushing with clear water to remove ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2.5cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the thickness of the primer is 0.12mm, the color of the primer is consistent with that of the finish paint, and black primer is sprayed on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, flushing with clear water to remove ash, and spraying finish paint; the thickness of the finishing paint is 1.3mm;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, flushing with clear water to remove ash, and spraying the finish paint.
The finishing paint comprises the following components in parts by mass: 12 parts of modified polyvinyl acetate emulsion, 0.7 part of a film forming additive of a vinyl pyrrolidone derivative, 0.2 part of modified cellulose ether, 0.15 part of a DSX3290 thickener, 0.1 part of a defoamer, 0.16 part of a bactericide trichlorocarbanilide, 72 parts of colored sand and 100 parts of water, wherein the pH value of the real stone paint is 9.5, the modified polyvinyl acetate emulsion is obtained by grafting and copolymerizing an organosilicon monomer and vinyl acetate in the presence of acrylic ester, the addition amount of the organosilicon monomer is 5% of the mass of vinyl acetate, the modified cellulose ether is polydimethylsilane modified cellulose ether, and the molar ratio of polydimethylsilane to the cellulose ether is 1:1.
Example 4
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall; firstly grinding uneven broken slag on the wall once by using sand skin paper, then flushing and drying by using clear water, and then scraping and filling materials
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.4mm, drying, polishing once, and then flushing with clear water to remove ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2.8cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the thickness of the primer is 0.18mm, the color of the primer is consistent with that of the finish paint, and black primer is sprayed on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, flushing with clear water to remove ash, and spraying finish paint; the thickness of the finishing paint is 1.4mm;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, flushing with clear water to remove ash, and spraying the finish paint.
The finishing paint comprises the following components in parts by mass: 14 parts of modified polyvinyl acetate emulsion, 0.7 part of vinyl pyrrolidone derivative film forming additive, 0.25 part of modified cellulose ether, 0.16 part of DSX3290 thickener, 0.11 part of defoamer, 0.16 part of bactericide trichlorocarbanilide, 72 parts of colored sand and 100 parts of water, wherein the pH value of the real stone paint is 9.5, the modified polyvinyl acetate emulsion is obtained by grafting and copolymerizing organosilicon monomers and vinyl acetate in the presence of acrylic ester, the addition amount of the organosilicon monomers is 5.2% of the mass of the vinyl acetate, the modified cellulose ether is polydimethylsilane modified cellulose ether, and the molar ratio of polydimethylsilane to the cellulose ether is 1:1.
Example 5
A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall; firstly grinding uneven broken slag on the wall once by using sand skin paper, then flushing and drying by using clear water, and then scraping and filling materials
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.5mm, drying, polishing once, and then flushing with clear water to remove ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 3cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the thickness of the primer is 0.2mm, the color of the primer is consistent with that of the finish paint, and black primer is sprayed on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, flushing with clear water to remove ash, and spraying finish paint; the thickness of the finishing paint is 1.5mm;
(6) Spraying finish paint: and after the finish paint is dried and solidified, polishing the finish paint, flushing with clear water to remove ash, and spraying the finish paint.
The finishing paint comprises the following components in parts by mass: 15 parts of modified polyvinyl acetate emulsion, 0.8 part of vinyl pyrrolidone derivative film forming additive, 0.28 part of modified cellulose ether, 0.18 part of DSX3290 thickener, 0.12 part of defoamer, 0.18 part of bactericide trichlorocarbanilide, 75 parts of color sand and 100 parts of water, wherein the pH value of the real stone paint is 10, the modified polyvinyl acetate emulsion is obtained by grafting and copolymerizing organosilicon monomers and vinyl acetate in the presence of acrylic ester, the addition amount of the organosilicon monomers is 5.8% of the mass of the vinyl acetate, the modified cellulose ether is polydimethylsilane modified cellulose ether, and the molar ratio of polydimethylsilane to the cellulose ether is 1:1.
Performance detection is carried out on the real stone paint film sprayed in the examples 1-5 according to JG/T24-2000 synthetic resin emulsion sand wall building coating standard, and the water whitening resistance of the real stone paint is detected in an important way:
TABLE 1
The true stone paint films in examples 1 to 5 were each cured at a relative humidity of 50% and a temperature of 5, 10, 23, 35℃for 7 days, respectively, and tested for water absorption.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. A spray coating process of water-tolerant white stone paint is characterized in that: the spraying process comprises the following steps:
(1) And (3) base layer treatment: cleaning broken slag and dirt on the wall;
(2) Batch scraping filling material: blade-coating putty with the thickness of 2.1-2.5mm, drying, polishing once, and then removing ash;
(3) Setting a parting line: drawing lines on the wall surface, dividing the wall surface into a plurality of blocks, wherein the width of the dividing lines is 2-3cm,
(4) And (3) spraying primer: spraying a layer of colored primer, wherein the color of the primer is consistent with that of the finish paint, and spraying black primer on the dividing line;
(5) And (3) spraying finishing paint: polishing the surface of the primer after the primer is dried and solidified, and spraying finish paint after ash removal;
(6) Spraying finish paint: polishing finish paint after the finish paint is dried and solidified, then removing ash, and spraying finish paint;
the finishing paint comprises the following components in parts by mass: 10-15 parts of modified polyvinyl acetate emulsion, 0.6-0.8 part of vinyl pyrrolidone derivative film forming auxiliary agent, 0.12-0.28 part of modified cellulose ether, 0.12-0.18 part of DSX3290 thickener, 0.1-0.12 part of defoamer, 0.15-0.18 part of bactericide trichlorocarbanilide, 70-75 parts of color sand and 100 parts of water, wherein the pH value of the real stone paint is 9-10;
the modified cellulose ether is polydimethylsilane modified cellulose ether;
the molar ratio of the polydimethylsilane to the cellulose ether is 1:1;
the modified polyvinyl acetate emulsion is obtained by graft copolymerization of organosilicon monomers and vinyl acetate in the presence of acrylic ester.
2. The process for spraying the water-resistant white stone paint according to claim 1, which is characterized in that: and (2) grinding the uneven broken slag on the wall in the step (1) once by using sand skin paper, flushing and drying by using clear water, and then scraping the filling material in batches.
3. The process for spraying the water-resistant white stone paint according to claim 1, which is characterized in that: the ash cleaning operation in the steps (2), (5) and (6) adopts clear water for flushing.
4. The process for spraying the water-resistant white stone paint according to claim 1, which is characterized in that: the thickness of the primer in the step (4) is 0.08-0.2mm.
5. The process for spraying the water-resistant white stone paint according to claim 1, which is characterized in that: the thickness of the finishing paint in the step (5) is 1.2-1.5mm.
6. The process for spraying the water-resistant white stone paint according to claim 1, which is characterized in that: the addition amount of the organosilicon monomer is 4.5-5.8% of the mass of the vinyl acetate.
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|---|---|---|---|---|
| CN112267649B (en) * | 2020-10-28 | 2021-09-21 | 重庆联筑装饰工程有限公司 | Wall surface stone-like coating construction device and construction process thereof |
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