CN109486417B - Water-based sand-containing alkali-resistant heat-insulating composite intermediate coating - Google Patents

Water-based sand-containing alkali-resistant heat-insulating composite intermediate coating Download PDF

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CN109486417B
CN109486417B CN201811346965.0A CN201811346965A CN109486417B CN 109486417 B CN109486417 B CN 109486417B CN 201811346965 A CN201811346965 A CN 201811346965A CN 109486417 B CN109486417 B CN 109486417B
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parts
agent
water
zoldine
laponite
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CN109486417A (en
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朱若衡
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CHANGSHA PINPAI PAINT CO.,LTD.
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Guangzhou Vis Paint Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

The invention relates to a water-based sand-containing alkali-resistant heat-insulating composite intermediate coating which comprises, by weight, 10-20 parts of deionized water, 0.4-0.7 part of modified cellulose mixture, 20-30 parts of pigment and filler, 2-5 parts of auxiliary agent, 1-3 parts of film-forming auxiliary agent, 30-40 parts of water-based alkali-resistant acrylic resin, 10-20 parts of hollow ceramic beads, 10-15 parts of pigment, 0.4-0.7 part of LAPONITE RD and ZOLDINETMXL-29SE2-7 parts, and OPTIEL CK 1-2 parts. The invention adds LAPONITE RD and ZOLDINETMXL-29SE improves the performance of the coating, and can realize the functions of three layers of coating, namely putty, primer and middle layer, namely LAPONITE RD and ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is tested by practice, and the obtained coating has strong binding power, good alkali resistance and good weather resistance.

Description

Water-based sand-containing alkali-resistant heat-insulating composite intermediate coating
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based sand-containing alkali-resistant heat-insulating composite intermediate coating.
Background
In the prior art, the coating for coating a flat wall surface can be generally divided into 5 layers, namely putty, primer, a middle layer, finish paint and finish paint. The putty is a decorative material for leveling the surface of a wall body, is thick paste paint before being used for paint construction, and is an essential product before painting. The putty is directly applied to an object, and mainly aims to fill the pores of a construction surface and correct the curve deviation of the construction surface, so that a foundation is laid for obtaining a uniform and smooth paint surface. Prepared by adopting a small amount of paint base, auxiliary agent, a large amount of filler and a proper amount of coloring pigment. The primer is the first layer of a paint system, is a coating which is directly applied to the surface of an object to serve as a firm foundation of the finish, and needs to be firmly attached to the surface of the object so as to increase the adhesive force of the upper coating and improve the decoration of the finish. The intermediate layer can shield gaps, can also play a role in texture, such as marble texture, and has good bonding force with the finish paint, and the strength of the intermediate layer is similar to that of the finish paint. Topcoats, which have decorative and protective functions such as color, gloss, texture, etc., also require resistance to harsh environments, and have different gloss levels exhibited. The finish paint is generally applied after the primer is applied, so that the effects of dust prevention and scrubbing resistance can be achieved.
Therefore, the prior art needs three working procedures for treating the paint, the three working procedures are completed in three times, the working procedures are complicated, and time and labor are wasted. CN201710416193.2 discloses a super-hydrophobic contamination-resistant multicolor paint, which comprises the following components in percentage by weight: 10-30% of protective sol, 30-50% of dispersed phase base paint and 20-50% of continuous phase varnish, wherein the protective colloid salt is one or more of LAPONITE-S482, LAPONITE-RDS and LAPONIE-RD. Although LAPONIE-RD is applied to the field of paint coating, the technical proposal does not give the related technical suggestion of three-in-one coating. JP5546241B2 discloses dispersed polymer pigments, in particular dispersed polymer backbones formed from polymers having at least one reactive carbodiimide group, carbodiimide compounds including Carbodilite V-02, V-04, E-01, ZOLDINE XL-29 SE. The technical proposal refers to that the dispersed polymer pigment of the invention can be used for paint priming paint, finishing paint and the like. However, this solution also does not give any technical teaching regarding a further three-in-one coating.
In conclusion, the prior art still lacks a composite coating capable of replacing putty, primer and intermediate layers.
Disclosure of Invention
The first purpose of the invention is to provide a water-based sand-containing alkali-resistant heat-insulating composite intermediate coating which can replace the functions of the original three layers of coatings of putty, primer and an intermediate layer, and can be formed in one step, thereby reducing the construction procedures, improving the construction speed and reducing the construction cost. The technical scheme of the invention is as follows.
The water-based sand-containing alkali-resistant heat-insulating composite intermediate coating comprises, by weight, 10-20 parts of deionized water, 0.4-0.7 part of modified cellulose mixture, 20-30 parts of pigment and filler, 3-8 parts of auxiliary agent, 30-40 parts of water-based alkali-resistant acrylic resin, 10-20 parts of hollow ceramic beads, 10-15 parts of pigment, 0.4-0.7 part of LAPONITE RD and ZOLDINETMXL-29SE2-7 parts, OPTIGEL CK 1-2 parts, wherein LAPONITE RD is a sheet-shaped synthetic silicate aqueous thixotropic agent available from Rockwood, Germany, and ZOLDINETMXL-29SE is a cross-linking agent of polycarbodiimide available from Dow chemical company, USA, the OPTIGEL CK is a chemical inorganic modified bentonite product available from Bike chemical company, Germany, the LAPONITE RD, the ZOLDINETMXL-29SE and saidMass ratio of OPTIGEL CK (1-2): (5-10): (2.5-3).
The intermediate coating can replace the functions of the original three layers of putty, primer and intermediate layer, and needs to provide improvement of construction performance and water resistance in the formula. LAPONITE RD as sheet synthetic silicate aqueous thixotropic agent is insoluble in water but can be hydrated and expanded in water to form colorless and transparent colloid, has excellent thixotropy and yield value even at low concentration, can improve the workability and water resistance of paint, and has zoldinETMXL-29SE is used as a water-based cross-linking agent, and the contained novel polycarbodiimide improves the cross-linking density, improves the integrity of a paint film and enhances the anti-rusting capability. A specially graded and activated inorganically modified bentonite product which exhibits high swelling in water, prevents settling of heavy pigments and fillers, and imparts a high yield value to the coating system, while OPTIGEL CK exhibits a low viscosity in water which is compatible with most emulsions, pigments and fillers, but avoids high concentrations of electrolytes to prevent destruction of the gel structure. The application of OPTIGEL CK can enhance the storage property of the system, the application property of the coating is obviously improved due to the yield value and thixotropy introduced into the system, the OPTIGEL CK can inhibit the precipitation of pigment and filler, and the OPTIGEL CK can be used as a thixotropy control agent, LAPONITE RD and ZOLDINETMXL-29SE is added into the paint to obtain the paint which can realize three functions of putty, primer and intermediate layer. Preferably, the LAPONITE RD and the ZOLDINETMMass ratio of XL-29SE to the OPTIGEL CK (1-2): (5-10): (2.5-3). The applicant develops a new coating process through multi-party tests, and obtains three functions of putty, primer and intermediate layer of a coating. Under the proportion, the obtained coating has strong binding power which is more than 0.80MPa, good alkali resistance which can last for 100 hours, good weather resistance which can last for 700 hours.
Preferably, the modified cellulose mixture is a mixture consisting of modified cellulose and a hydrophobic agent, wherein the modified cellulose comprises hydroxyethyl cellulose and hydroxymethyl cellulose, and the mass ratio of the hydroxyethyl cellulose to the hydroxymethyl cellulose to the hydrophobic agent is (1-2): (2-4): (1.5-3).
Preferably, the water-based alkali-resistant acrylic resin comprises a silicone hybrid resin, and the silicone hybrid resin is prepared by adding 50-70 parts of vinyl siloxane, 50-100 parts of fluorocarbon silane and 30-60 parts of phenyl siloxane into a reaction container, adding ethanol, deionized water and hydrochloric acid, and then carrying out copolycondensation at 40-100 ℃ for 2-12 hours.
Preferably, the pigment and filler comprises one or more of kaolin, barium sulfate, quartz sand and corundum.
Preferably, the pigment is rutile titanium dioxide.
Preferably, the auxiliary agent comprises a dispersing agent, an antifoaming agent, a wetting agent, a preservative and a film-forming auxiliary agent, wherein the film-forming auxiliary agent is one or two of lauryl alcohol ester and dipropylene glycol methyl ether, the dispersing agent is one of oxidized polyethylene wax, sodium hexametaphosphate and alkylphenol polyoxyethylene ether, the antifoaming agent is one of emulsified silicone oil, a high-alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether and polyoxyethylene polyoxypropylene amine ether, the wetting agent is a polyacrylic ammonium salt, and the preservative is carbazone.
Preferably, the mass ratio of the film forming auxiliary agent to other auxiliary agents in the auxiliary agent is (1-4): (1-6). Namely, the mass ratio of the film-forming additive to the dispersant, the defoamer, the wetting agent and the preservative is (1-4): (1-6), the invention needs enough film-forming auxiliary agent to promote the rapid forming of the intermediate coating, thereby improving the construction speed.
Preferably, the intermediate coating further comprises 5-7 parts of natural marble color sand.
Preferably, the coating is prepared by sequentially adding the components into a dispersion kettle, dispersing for 15-20 minutes at the speed of 1000-1200r/min, adding a thickening agent to adjust the viscosity to 90-110KU, and finally preparing into a colored paste.
The thickening agent is one of diphenylmethane diisocyanate type polyurethane, hydrophobic modified alkali-soluble acrylic polymer, magnesium aluminum silicate and sodium carboxymethylcellulose. The viscosity isMeasured by means of a stormer viscometer. The sequential order refers to the order of the raw material table, namely, the deionized water, the modified cellulose mixture, the pigment and filler, the auxiliary agent, the water-based alkali-resistant acrylic resin, the hollow ceramic beads, the pigment, LAPONITE RD and ZOLDINETMXL-29SE, the natural marble color sand are sequentially put into a dispersion kettle to prepare paste.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adds LAPONITE RD and ZOLDINETMXL-29SE improves the performance of the coating, and can realize the function of three layers of coatings, namely putty, primer and a middle layer;
(2) LAPONITE RD and ZOLDINETMThe mass ratio of XL-29SE to the OPTIGEL CK is tested by practice, and the obtained coating has strong binding power, good alkali resistance and good weather resistance.
(3) The coating can be formed in one step, construction procedures are reduced, construction speed is improved, and construction cost is reduced.
Detailed Description
The following further illustrates embodiments of the invention:
in this example, the LAPONITE RD is purchased from Rockwood, Germany, and the ZOLDINETMXL-29SE was purchased from Dow chemical, USA, and the OPTIEL CK was purchased from Bikk chemical, Germany. The organic silicon hybrid resin is prepared by adding 50-70 parts of vinyl siloxane, 50-100 parts of fluorocarbon silane and 30-60 parts of phenyl siloxane into a reaction container, adding 50 parts of ethanol solvent, 50 parts of deionized water and 60 parts of hydrochloric acid with the mass ratio of 10%, and then carrying out copolycondensation at 60 ℃ for 10 hours. The modified cellulose mixture is prepared from hydroxyethyl cellulose, hydroxymethyl cellulose and a hydrophobic agent according to the mass ratio of 1: 2: 2, the film-forming assistant is composed of dodecyl alcohol ester and dipropylene glycol methyl ether according to a mass ratio of 1:2, in the auxiliary agent, the dispersing agent is oxidized polyethylene wax, the defoaming agent is polyoxyethylene polyoxypropylene amine ether, the wetting agent is polyacrylic acid ammonium salt, the preservative is carbazone, the oxidized polyethylene wax, the polyoxyethylene polyoxypropylene amine ether and the polypropyleneThe mass ratio of the acid ammonium salt to the cason is 1:1:1: 2.
Example 1
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.7kg of modified cellulose mixture, 30kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.7kg of LAPONITE RD, and ZOLDINETMXL-29SE 7kg, OPTIGEL CK 2kg, rutile titanium dioxide 10kg and natural marble color sand 5 kg; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1: 10: 3.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A1.
Example 2
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.4kg of modified cellulose mixture, 20kg of kaolin, 2kg of auxiliary agent, 1kg of film-forming auxiliary agent, 30kg of organic silicon hybrid resin, 10kg of hollow ceramic beads, 0.4kg of LAPONITE RD, and ZOLDINETMXL-29SE 2kg, OPTIGEL CK 1kg, rutile titanium dioxide 30kg and natural marble color sand 7 kg; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1: 5: 2.5.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A2.
Example 3
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.4kg of LAPONITE RD, and ZOLDINETMXL-29SE 3.2kg, OPTIGEL CK 1.2kg, rutile titanium dioxide 12kg, natural marble color sand 6 kg; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1: 8: 3.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A3.
Example 4
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.4kg of LAPONITE RD, and ZOLDINETMXL-29SE 0.4kg, OPTIGEL CK 0.4kg, rutile titanium dioxide 12kg, natural marble color sand 6 kg; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1:1: 1.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A4.
Example 5
(1) Preparing the following materials according to parts by weight for standby,
20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.4kg of LAPONITE RD and ZOLDINETMXL-29SE 4kg, OPTIELCK 6kg, rutile titanium dioxide 12kg, 6kg natural marble color sand; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1: 10: 20.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A5.
Example 6
(1) Preparing the following materials according to parts by weight for standby,
20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 4kg of LAPONITE RD and ZOLDINETMXL-29SE 0.4kg, OPTIELCK 8kg, rutile titanium dioxide 12kg, 6kg natural marble color sand; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is10：1：2。
(2) The components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A6.
Example 7
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads and ZOLDINETMXL-29SE 7kg, OPTIGEL CK 2kg, rutile titanium dioxide 12kg and natural marble color sand 6 kg;
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A7. LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 0: 3.5: 1.
example 8
(1) Preparing materials of the following components according to parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.7kg of LAPONITE RD, 2kg of OPTIGEL CK, 12kg of rutile titanium dioxide and 6kg of natural marble color sand; laponited, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 7: 0: 20.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A8.
Example 9
(1) Preparing the following components in parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 0.7kg of LAPONITE RD, and ZOLDINETMXL-29SE 7kg, rutile titanium dioxide 12kg and natural marble color sand 6 kg; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 1: 10: 0.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A9.
Example 10
(1) Preparing materials of the following components according to parts by weight for later use, 20kg of deionized water, 0.5kg of modified cellulose mixture, 25kg of kaolin, 5kg of auxiliary agent, 3kg of film-forming auxiliary agent, 40kg of organic silicon hybrid resin, 20kg of hollow ceramic beads, 1.2kg of OPTIGEL CK, 12kg of rutile titanium dioxide and 6kg of natural marble colored sand; LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is 0: 0: 12.
(2) the components are sequentially put into a dispersion kettle and dispersed for 20 minutes at the speed of 1200r/min, and a thickening agent is added to adjust the viscosity to be 100KU, so that a colored paste is prepared, and the colored paste is marked as paint A10.
Comparative examples
The putties, primers, intermediate layers commonly used in the prior art are labeled comparative example B1, comparative example B2, comparative example B3.
Comparative example 1
Preparing putty, namely preparing 350g of quartz powder and 350g of active calcium 250; 90-120g of calcite powder; 5-10g of hydroxypropyl methyl cellulose; 8-12g of polyvinyl alcohol; 3-8g of starch ether; 45-55g of titanium dioxide; 1-3g of polyacrylamide; 1-3g of organosilane powder; 8-12g of borax, which is marked as B1, directly added with water and stirred into paste.
Comparative example 2
A primer was prepared by adding water to 30g of acrylic resin, 20g of silica, 10g of organobentonite, 20g of calcium carbonate, 5g of butanol, and 5g of butyl stearate, and stirring them to form a paste, which was denoted by B2.
Comparative example 3
An intermediate layer was prepared by adding water to 30g of a hydroxyacrylic acid resin, 10g of organobentonite, 10g of talc, 4g of iron oxide, 4g of carbon powder, 3g of wollastonite powder, 2g of sodium dodecylsulfate, 1g of glycerin, 1.5g of poly-4-methyl-1-pentene, 3g of butyl diglycol, 1g of polyacrylamide, 3g of active zinc oxide, and 1g of sodium gluconate, and stirring them into a paste, which was labeled B3.
Effects of the embodiment
The coatings prepared in the examples and comparative examples were directly sprayed on the base surface at intervals of 2 hours between coating applications and dried for 7 days, and then subjected to technical tests after drying.
Bleed resistance and salting-out resistance test: the test method is according to JG/T210-2007 building interior and exterior wall primer, and the test results are shown in Table 1.
TABLE 1 results of the test for bleed-out resistance and salting-out resistance
Figure BDA0001863988950000071
Figure BDA0001863988950000081
Analysis of the data in Table 1 reveals that example A7 lacks LAPONITE RD and example A8 lacks ZOLDINETMXL-29SE, example A10 lack LAPONITE RD and ZOLDINETMXL-29SE, abnormal in the test of resistance to saltation and to saltation after 24 hours, known as A1-A6 and A9, LAPONITE RD and ZOLDINETMXL-29SE exhibited no abnormality for 72 hours in the presence of the efflorescence resistance and no abnormality for 144 hours in the salting-out resistance, and exhibited better effects than those of comparative examples B1-B3, and even in the absence of OPTIGEL CK in the A9 example, the effects were better than those of comparative examples B1-B3.
And (3) weather resistance test: the coatings prepared in the examples and comparative examples were sprayed directly onto the base surface at intervals of 2 hours between coating applications and dried for 7 days, and the test methods were in accordance with "multilayer building coatings" GB/T9779-2005, and the measured data are data obtained after the coatings were aged on the substrate for 600 hours.
TABLE 2 weather resistance test results
Figure BDA0001863988950000082
Figure BDA0001863988950000091
As is clear from the data in Table 2, the samples A1-A3 showed no cracks, no cracks/grades were observed, all the results were less than 1, all the values of discoloration/grades were less than 2, and the weather resistance effect was significant, the samples A4-A5 showed no cracks, all the results were less than 1.5, all the values of discoloration/grades were less than 2.5, and the weather resistance effect was also good, and the samples A7-A10 and the samples B1-B3 showed not only cracks and blisters, but also the values of discoloration/grades exceeded 3, and all the values of discoloration/grades exceeded 5, and the weather resistance effect was poor.
And (3) testing the bonding strength: according to the test method, ceramic tiles are selected from the base surface according to the external wall flexible putty GB/T23455-2009.
Table 3 bond strength test results
Figure BDA0001863988950000092
Figure BDA0001863988950000101
As shown in Table 3, the adhesive force of examples A1-A3 is greater than 0.8MPa, the standard state is not less than 0.60, the water immersion treatment is not less than 0.3, and the freeze-thaw cycle treatment is not less than 0.30, which is better than that of examples A4-A10;
from a review of tables 1-3, it can be seen that the performance criteria of examples 1-3 using the inventive formulations are better than those of comparative examples 1-7, indicating that the coating formulations of the present invention are superior to the prior art by adding LAPONITE RD and ZOLDINETMXL-29SE improves the performance of the coating, and can realize the function of three layers of coatings, namely putty, primer and a middle layer; meanwhile, LAPONITE RD, ZOLDINETMThe mass ratio of XL-29SE to OPTIGEL CK is (1-2): (5-10): (2.5-3), the obtained coating has strong binding power, good alkali resistance and good weather resistance, and the quality proportion is tested by practice.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (7)

1. The water-based sand-containing alkali-resistant heat-insulating composite intermediate coating is characterized by comprising the following components in parts by weight: 10-20 parts of deionized water, 0.4-0.7 part of modified cellulose mixture, 20-30 parts of pigment and filler, 3-8 parts of auxiliary agent, 30-40 parts of water-based alkali-resistant organic silicon hybrid resin, 10-20 parts of hollow ceramic beads, 10-15 parts of pigment, 0.4-0.7 part of LAPONITE RD, and ZOLDINETMXL-29SE2-7 parts, OPTIGEL CK 1-2 parts, wherein LAPONITE RD is a sheet-shaped synthetic silicate aqueous thixotropic agent available from Rockwood, Germany, and ZOLDINETMXL-29SE is a cross-linking agent of polycarbodiimide available from Dow chemical company, USA, the OPTIGEL CK is a chemical inorganic modified bentonite product available from Bike chemical company, Germany, the LAPONITE RD, the ZOLDINETMMass ratio of XL-29SE to the OPTIGEL CK (1-2): (5-10): (2.5-3);
the modified cellulose mixture is a mixture consisting of modified cellulose and a hydrophobic agent, wherein the modified cellulose comprises hydroxyethyl cellulose and hydroxymethyl cellulose, and the mass ratio of the hydroxyethyl cellulose to the hydroxymethyl cellulose to the hydrophobic agent is (1-2): (2-4): (1.5-3); the water-based alkali-resistant organic silicon hybrid resin is prepared by adding 50-70 parts of vinyl siloxane, 50-100 parts of fluorocarbon silane and 30-60 parts of phenyl siloxane into a reaction container, adding ethanol, deionized water and hydrochloric acid, and performing copolycondensation at 40-100 ℃ for 2-12 hours.
2. The aqueous sand-containing alkali-resistant heat-insulating composite intermediate coating as claimed in claim 1, wherein the pigment and filler comprises one or more of kaolin, barium sulfate, quartz sand and corundum.
3. The aqueous sand-containing alkali-resistant heat-insulating composite intermediate coating as claimed in claim 1, wherein the pigment is rutile titanium dioxide.
4. The aqueous sand-containing alkali-resistant heat-insulating composite intermediate coating as claimed in claim 1, wherein the auxiliary comprises a dispersant, a defoaming agent, a wetting agent, a preservative and a film-forming auxiliary, the film-forming auxiliary is one or a mixture of two of dodecyl alcohol ester and dipropylene glycol methyl ether, the dispersant is one of polyethylene oxide wax, sodium hexametaphosphate and alkylphenol polyoxyethylene ether, the defoaming agent is one of emulsified silicone oil, a high-carbon alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether and polyoxyethylene polyoxypropylene amine ether, the wetting agent is polyacrylic ammonium salt, and the preservative is Carson.
5. The water-based sand-containing alkali-resistant heat-insulating composite intermediate coating as claimed in claim 4, wherein the mass ratio of the film-forming auxiliary agent to other auxiliary agents in the auxiliary agents is (1-4): (1-6).
6. The aqueous sand-containing alkali-resistant heat-insulating composite intermediate coating material as claimed in claim 1, further comprising 5 to 7 parts of natural marble color sand.
7. The water-based sand-containing alkali-resistant heat-insulating composite intermediate coating as claimed in any one of claims 1 to 6, wherein the intermediate coating is prepared by sequentially adding the components into a dispersion kettle, stirring at a stirring speed of 1000-1200r/min for 15-20 minutes, adding a thickening agent to adjust the viscosity to 90-110KU, and finally preparing into a colored paste.
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