CN112708294A - Inorganic silicate interior wall coating and preparation method thereof - Google Patents
Inorganic silicate interior wall coating and preparation method thereof Download PDFInfo
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- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
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Abstract
The invention discloses an inorganic silicate interior wall coating and a preparation method thereof, wherein the inorganic silicate interior wall coating is prepared from the following raw materials in parts by mass: 500 parts of water 300-containing material, 1-10 parts of dispersing agent, 1-10 parts of defoaming agent, 1-10 parts of flatting agent, 1-10 parts of pH regulator, 500 parts of modified inorganic filler 200-containing material, 300 parts of modified inorganic film-forming base material, 30-100 parts of organic emulsion and 1-10 parts of thickening agent; the inorganic silicate paint has simple and reasonable composition, good stability, little pollution, little release of volatile gases such as formaldehyde, benzene and the like, smooth and clean surface, good water resistance, difficult shedding, hardness of 2H and above, first-grade adhesive force, surface drying time of less than 1H, contrast ratio of 0.95 and above, stable storage at low temperature of minus 5 +/-2 ℃ and no obstacle when being coated twice in the construction process, and meets the requirement of the inorganic silicate paint on the inner wall of a building.
Description
(I) technical field
The invention belongs to the building coating industry, relates to interior wall coating used for decoration and a preparation method thereof, and particularly relates to a preparation method of a modified inorganic filler.
(II) background of the invention
Organic coatings have been widely used for a long time because of their excellent decorativeness, variety of products, and low cost. However, as the main raw materials of the organic building coating are derived from resources such as coal, petroleum, natural gas and the like, a large amount of byproducts, volatile solvents and residual monomers are generated in the preparation and construction processes, which not only causes environmental pollution, but also causes a large amount of energy waste. With the rise of modern buildings and the popularization of environmental awareness, people have higher and higher requirements on building coatings, and the building coatings at home and abroad are developing towards low VOC (volatile organic compounds), function composition and high-performance high-grade. The inorganic paint is prepared with silicate and phosphate compound as adhesive and through adding pigment, stuffing and assistant. The inorganic coating shows the superiority which is difficult to compare with the organic coating in various aspects, and the water-based inorganic coating has good air permeability, stain resistance and excellent environmental protection performance by analyzing the characteristics of the material; however, the general aqueous inorganic silicate coating has the problems of poor stability, poor mechanical properties of a coating film, easy differentiation and cracking, poor initial water resistance of a coating layer and the like, and in order to adapt to market development steps and realize sustainable development, research and development of an inorganic silicate coating with stable and efficient performance have become a new trend aiming at the defects of the inorganic silicate coating.
The traditional paint preparation process mainly comprises three stages of auxiliary agent dispersion, high-speed pulping and paint mixing. During pulping, a large amount of inorganic fillers such as heavy calcium carbonate, talcum powder, wollastonite, kaolin and the like are added, so that the production cost of the material can be reduced, the hardness, rigidity or dimensional stability of the material can be improved, the mechanical property of the material is improved, and the material is endowed with certain special physical and chemical properties such as corrosion resistance, weather resistance, flame retardance, insulativity and the like. However, the inorganic powder filler and the matrix, i.e. the organic polymer, have different surface or interface properties and poor compatibility, so that the inorganic powder filler is difficult to be uniformly dispersed in the matrix, and the greatest difficulty of the inorganic silicate coating at present is insufficient stability in the later period, and the improper treatment and use of the raw materials can cause serious post-thickening and toning problems of the system, which are related to the properties of the inorganic silicate. Firstly, the silicate or silica sol contains a large amount of silicate with various structures (see figure 1), and the silicate with different polymerization degrees permeates into the cement substrate and is tightly combined with the cement substrate in a chemical bonding way, so the durability of the inorganic material is better than that of the common emulsion paint, and the durability is better over time, which is the reason that the European area with the most developed inorganic paint responds to 'paint inorganic treatment'; at the same time, however, Si-OH in the silicate will be present together with Mg contained in the inorganic filler, especially ground calcium carbonate2+、Cu2+And the curing reaction is repeated to finally generate difficult alkali metal carbonate, which is the root of poor stability of the inorganic silicate coating (the curing reaction is shown in figure 2). Therefore, the stability of the inorganic silicate coating system is mainly that the activity of Si-OH in silicate is too high and the filler contains too much polyvalent metal ion impurities, and the direct or excessive filling of unmodified and purified silicate and filler often leads to very serious thickening of the final finished product, and meanwhile, the coating system has the defects of certain mechanical property reduction, brittleness and the like. Chinese patent CN106893365A discloses a preparation method of a light calcium/heavy calcium active composite material, which adopts solid paraffin and stearic acid modified light calcium/heavy calcium composite powder to improve the filling performance of inorganic nonmetallic mineral fillers. The price of the light calcium is higher than that of the heavy calcium,the use amount of light calcium in the modification process is large, the comprehensive cost of the light calcium is far higher than that of heavy calcium, and meanwhile, the light calcium is obtained by a series of chemical processes of high-temperature calcination, carbonization and reduction of calcium carbonate ore and the like. Although the chemical composition of light calcium is the same as that of heavy calcium, the light calcium is difficult to ensure complete carbonization in the production process, the alkalinity of the final product is higher than that of the heavy calcium, and the light calcium also contains a certain concentration of high-activity calcium ions, and the high-activity calcium ions can react with potassium silicate or silica sol to seriously affect the stability of the inorganic coating, so the light calcium cannot be used for the inorganic coating. For the same reason, light calcium carbonate is also used with caution in the latex paint, and if the light calcium carbonate is slightly poor in quality or is excessively used, the latex paint can be seriously thickened. Based on the fact, large-scale coating enterprises generally do not use light calcium in the building latex paint in order to ensure the stability of products. In addition, the material is modified by adopting organic paraffin and stearic acid, and potential toxicity is possibly caused to the final resin product. Chinese patent CN103788749A discloses a superfine ground calcium carbonate filler modified by dimethyl silicone oil for coating, which is modified by dimethyl silicone oil, alginic acid, bauxite, vanadium boride, calcium laurate, triacetin and an auxiliary agent, so that the superfine ground calcium carbonate is easier to disperse and be compatible in a base material, but the adopted modifier is expensive, and the raw material contains a lot of organic substances, thus causing potential toxicity. Therefore, in addition to the requirements of particle size and particle size distribution, the surface of the inorganic powder filler must be modified to improve the physicochemical properties of the surface, enhance the compatibility with the matrix, i.e., organic polymer or resin, and the like, and the dispersibility in the organic matrix, so as to improve the mechanical strength and the comprehensive properties of the material; in addition, the stabilized potassium silicate and silica sol can effectively reduce the number of silanol groups and the curing reaction degree in the coating system, thereby ensuring that the coating system can be stably stored for a long time.
Therefore, the invention provides a preparation method of the inorganic silicate interior wall coating, the synthesis method is simple to operate, the modified inorganic filler, the stabilized potassium silicate, the silica sol and the emulsion are uniformly dispersed, the stability of a coating system is improved, the interfacial compatibility and the dispersion stability of the inorganic filler in a matrix are greatly improved, the addition amount is increased, and the cost of a product is reduced. The modified silicate coating has the advantages of no toxicity, low VOC content, better flame retardance, better adhesive force than pure inorganic silicate coatings, shorter surface drying time, coating film hardness of 3H or above and the like, and has good industrial prospect.
Disclosure of the invention
In order to overcome the defects and shortcomings of the prior art, the invention mainly aims to provide an inorganic silicate interior wall coating and a preparation method thereof. Aiming at the important problems of poor stability, poor water resistance, easy pulverization and the like of the existing silicate coating, the organic modifier is utilized to improve the interface compatibility and the dispersibility of the inorganic filler in the matrix, increase the addition amount and reduce the cost of the product; meanwhile, the stabilized potassium silicate and silica sol are adopted, so that the number of silanol groups is reduced, and the reaction activity of the silanol groups is reduced. The modified and purified inorganic filler and the potassium silicate have the advantages of good dispersion stability, no toxicity, no odor, quick drying of a coating, smooth and clean surface, good water resistance and difficult shedding, reduce the reaction activity of the potassium silicate in the inorganic coating and meet the requirement of the inorganic silicate coating on the building inner wall. Solves the problems of insufficient stability, serious post thickening, difficult color mixing, easy pulverization and the like of an inorganic coating system, and has good industrial prospect.
The technical scheme of the invention is as follows:
the invention provides an inorganic silicate interior wall coating, which is prepared from the following raw materials in parts by mass: 500 parts of water 300-containing material, 1-10 parts of dispersing agent, 1-10 parts of defoaming agent, 1-10 parts of flatting agent, 1-10 parts of pH regulator, 500 parts of modified inorganic filler 200-containing material, 300 parts of modified inorganic film-forming base material, 30-100 parts of organic emulsion and 1-10 parts of thickening agent;
the modified inorganic filler is prepared by the following method: placing an organic modifier a and an inorganic filler in a stirring tank, adding organic alcohol and water, stirring for 1-5 hours, placing in a drying oven at 50-150 ℃ for drying for 1-5 hours, and then grinding to obtain a modified inorganic filler; the organic modifier a is one or more of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, vinyltriacetoxysilane, vinyltri-tert-butylhydroperoxide, N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, aniline methyl triethoxysilane and gamma-mercaptopropyltrimethoxysilane; the inorganic filler is one or a mixture of more of titanium dioxide, calcined kaolin, heavy calcium carbonate and talcum powder; the organic alcohol is one or more of ethanol, ethylene glycol, propanol, propylene glycol or glycerol; the mass ratio of the inorganic filler to the organic modifier a is 1:0.01-1.0, preferably 1: 0.02-0.08; the mass ratio of the inorganic filler to the organic alcohol is 1: 0.1-1.0, preferably 1: 0.7-0.7; the mass ratio of the inorganic filler to the water is 1: 0.05-1.0, preferably 1: 0.6-0.2;
the modified inorganic film-forming base material is one or a mixture of more of modified silica sol, modified potassium silicate and modified sodium silicate, and the modified potassium silicate is prepared by the following method: stirring the organic modifier b in a three-neck flask to fully hydrolyze and condense the organic modifier b, adding potassium silicate, stirring and mixing, finally adding a stabilizer, and standing at room temperature for 2-4h to obtain modified potassium silicate; under the same condition, replacing potassium silicate with silica sol or sodium silicate to respectively obtain modified silica sol or modified sodium silicate; the organic modifier b is one or more of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, vinyltriacetoxysilane, vinyltri-tert-butylhydroperoxide, N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, aniline methyl triethoxysilane and gamma-mercaptopropyltrimethoxysilane; the organic modifier b and the organic modifier a are both organic modifiers, and the letters have no meanings; the stabilizer is one or more of inorganic coating stabilizer STAB PG, inorganic coating stabilizer STAB PV, potassium silicate coating stabilizer LOPON827 and silicate coating stabilizer LOPON @ ST; the mass ratio of the potassium silicate to the organic modifier b is 1:0.01-0.1, preferably 1: 0.04-0.07; the mass ratio of the potassium silicate to the stabilizer is 1:0.01-0.1, preferably 1: 0.01-0.02;
the dispersing agent is one or more of fatty acid dispersing agents CK-921 and CK-922 of New materials science and technology Limited of Tianjin Gaoka, dioctyl sodium sulfosuccinate dispersing agent (OT-75) of Shandong Yousio chemical science and technology Limited, and dispersing agent 5040;
the defoaming agent is one or more of mineral oil CK-231, CK-232 and CK-233 of New Material science and technology Limited, Shandong Yousio chemical engineering science and technology Limited, and NXZ defoaming agent;
the leveling agent is one or more of organic silicon CK-113, CK-114 and CK-115 of Tianjin Gaoka New Material science and technology Limited and polyurethane RM-2020 of Shandong Youso chemical science and technology Limited;
the pH regulator is one or more of 2-amino-2-methyl-1-propanol (AMP-95), monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine and N-methylethanolamine;
the thickening agent is one of carboxymethyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, methyl cellulose and ethyl cellulose;
the organic emulsion is one of styrene-acrylic emulsion, silicone-acrylic emulsion and pure acrylic emulsion.
Further, the inorganic silicate interior wall coating is prepared from the following raw materials in parts by mass: 500 parts of 320-one water, 2-7 parts of dispersing agent, 2-8 parts of defoaming agent, 2-7 parts of flatting agent, 1-8 parts of pH regulator, 460 parts of modified inorganic filler, 300 parts of modified inorganic film-forming base material 170-one organic emulsion and 4-7 parts of thickening agent.
Further, the inorganic filler is one of the following compositions: (1) mixing the heavy calcium carbonate and the titanium dioxide according to the mass ratio of 3: 1; (2) mixing the heavy calcium carbonate with the titanium dioxide and the talcum powder according to the mass ratio of 20:8: 7; (3) mixing heavy calcium carbonate with talcum powder and calcined kaolin according to the mass ratio of 25:8: 8; (4) mixing the heavy calcium carbonate with titanium dioxide, calcined kaolin and talcum powder according to the mass ratio of 1:0.3-0.4:0.2-0.4: 0.2-0.4; the titanium dioxide is one of R706, R900, R902, R931, R960, R102, R103, R104 and R105, the mesh number of talcum powder is 325-1500, the mesh number of calcined kaolin is 500-1500, and the mesh number of heavy calcium carbonate is 400-1400.
Further, the inorganic film-forming binder is composed of one of the following: (1) mixing the modified potassium silicate and the modified silica sol in a mass ratio of 1:0.1-2, preferably 1: 0.5-1.5; (2) mixing the modified potassium silicate, the modified sodium silicate and the modified silica sol in a mass ratio of 1:0.1-2:0.1-2, preferably 1: 1: 0.5-1.5; the silica sol is alkaline silica sol; the modulus of the potassium silicate is 2.0-4.0, and the modulus of the sodium silicate is 2.0-4.0.
Further, the organic modifier a and the organic modifier b are preferably one of gamma-aminopropyltrimethoxysilane, gamma- (2, 3-glycidoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane and vinyl trimethoxysilane respectively.
Further, the stabilizer is preferably LOPON @ ST.
The invention also provides a preparation method of the inorganic silicate interior wall coating, which comprises the following steps: adding water, a dispersing agent, a defoaming agent, a flatting agent and a pH regulator into a stirring tank according to the formula amount, and stirring for the first time for 5-15min at the rotating speed of 500-1500 r/min; then adding modified inorganic filler, and stirring for 20-60min at the speed of 1000-; then adding the modified inorganic film-forming base material and the organic emulsion, stirring for the third time for 5-15min at the rotating speed of 500-1000r/min, finally adding the thickening agent, stirring for the fourth time for 20-50min at the rotating speed of 400-1000r/min, and discharging to obtain the inorganic silicate interior wall coating.
Further, the first stirring condition is preferably 600-; the second stirring condition is preferably 1500-; the third stirring condition is preferably 700-1000r/min for 10-15 min; the fourth stirring condition is preferably 700-1000r/min for 30-50 min.
The basic principle of the invention is as follows: the magnesium oxide in the heavy calcium carbonate has chemical curing reaction with silicate, so that the inorganic filler and the potassium silicate have serious thickening effect in an inorganic coating system, meanwhile, the surfaces of inorganic filler powders such as heavy calcium carbonate, talcum powder, calcined kaolin, titanium dioxide and the like are hydrophilic, poor compatibility with organic high polymer, easy agglomeration, easy instability of later-stage coating, foaming, peeling and the like, in order to improve the stable system and commercial use value of an inorganic silicate coating system, heavy calcium carbonate in the system needs to be modified and purified, potassium silicate silica sol needs to be stabilized, modified inorganic particles and film-forming base materials, in the process of preparing the water-based paint, because the activity is reduced, a good compatibility and dispersion stability are formed among the purified and modified inorganic base material, the emulsion and the filler, the agglomeration is avoided, and the later coating is more uniform.
The organic modifier is a molecular bridge capable of connecting organic matters and inorganic particles, and has double reactive groups (general formula is Y-R-SiX)3) (ii) a Y is an organic group with reactivity, such as vinyl, amino, epoxy, sulfydryl, alkyl and the like, R is a saturated or unsaturated carbon chain, and X is a group easy to hydrolyze, such as alkoxy, ethoxy, acetoxyl, halogen and the like, and is mainly used for the purpose of connecting inorganic particles. The reaction mechanism is as follows: (1) purifying and modifying inorganic calcium carbonate: the X group in the organic modifier is hydrolyzed to generate silanol (Y-R-Si-OH), only one silanol group of three Si-OH groups on the silane coupling agent generally generates hydrogen bond bonding with-OH on the surface of the inorganic filler, silicon hydroxyl is dehydrated to form-Si-O-bonding on the surface of inorganic filler powder, and the remaining two Si-OH groups are connected with other silanes or are in a free state. Therefore, the organic end of the coupling agent reacts with and winds the organic emulsion in the coating, the surface energy of the inorganic filler powder is finally reduced, the dispersibility is improved, and the surface is oleophilic, so that the affinity between the filler and the high polymer is increased. Meanwhile, the free silanol group can generate chemical crosslinking with inorganic binder potassium silicate or silica sol in the construction process, thereby improving the crosslinking curing density of the coating and shortening the drying time. (2) Stabilizing treatment of inorganic film-forming base material: existence in pure potassium silicate and silica solA large amount of active silanol groups, particularly pure potassium silicate, is easy to generate post-thickening due to chemical curing generated between inorganic fillers with higher activity and without purification, so that an inorganic coating system is gelated and discarded. The organic silicon modifier is also subjected to dehydration condensation with Si-OH on the surfaces of pure potassium silicate and silica sol, so that the number of active silanol groups is reduced, the steric hindrance is increased due to alkyl groups introduced by the silane coupling agent while the silanol groups are reduced, an effective balance is formed between the stability and the activity of the potassium silicate due to the same charge repulsion, and finally, the inorganic base material, the emulsion and the modified and purified filler in an inorganic coating system are in a uniformly dispersed state.
In conclusion, the inorganic filler modified and purified by the organic modifier has hydrophilicity and lipophilicity, and after the organic modifier is added into the stabilized silicate coating, the inorganic film-forming material, the organic emulsion and the modified filler can be uniformly dispersed in water, so that the organic modified silicate coating has certain compatibility, the phase separation phenomenon is not easy to occur, and the storage stability of the silicate coating is greatly prolonged due to the low curing reaction between the silanol group and the inorganic filler.
Compared with the prior art, the invention has the following beneficial effects:
(1) the modified inorganic filler has simple preparation method, good interface compatibility and dispersion stability in the matrix, increased addition amount and capability of effectively reducing the cost of products. Compared with pure potassium silicate, the stabilized potassium silicate has lower reactivity, achieves synergistic balance between activity and stability, and is beneficial to improving the storage stability of the whole coating system.
(2) The invention provides an inorganic silicate interior wall coating, which has simple and reasonable composition, good stability, little pollution, almost no release of volatile gases such as formaldehyde, benzene and the like, smooth and clean surface, good water resistance, difficult shedding, hardness of 2H and above, first-grade adhesive force, surface drying time of less than 1H, contrast ratio of 0.95 and above, stable storage at low temperature (-5 +/-2) DEG C, no obstacle after being coated twice in the construction process, and capability of meeting the requirement of the inorganic silicate coating on the interior wall of a building.
(3) The preparation method of the inorganic silicate coating provided by the invention has the advantages of simple and safe process, strong operability, low cost and good industrial value.
(IV) description of the drawings
FIG. 1 Structure of alkali silicate, Q0、Q1、Q2Represents the number of Si-O-Si.
FIG. 2 is a diagram of the reaction of an alkali metal silicate with a polyvalent metal ion.
FIG. 3 is a schematic diagram showing the modification of silica sol and potassium silicate.
FIG. 4 is a reaction mechanism diagram of a silane coupling agent.
FIG. 5 is a schematic diagram of the purification modification of ground calcium carbonate.
FIG. 6 is a flow chart of the preparation of inorganic silicate interior wall coating.
FIG. 7 IR spectrum of modified inorganic filler in example 1.
FIG. 8 is a graph of the contact angle to water before and after modification of the sample of ground calcium carbonate of example 1; a is unmodified, θ is 0 °; b is modified, and θ is 16.6 °.
FIG. 9 is a drawing of a coating film of an inorganic silicate interior wall coating in example 1.
FIG. 10 modified potassium silicate infrared spectrum of example 1.
(V) detailed description of the preferred embodiments
The present invention is further illustrated by the following specific examples, but the scope of the invention is not limited thereto.
In the embodiment of the invention, the defoaming agent is one or more of mineral oil CK-231, CK-232 and CK-233 of New Material science and technology Limited in Tianjin Gaoka, organic silicon defoaming agent and NXZ defoaming agent of Shandong Yousio chemical science and technology Limited; the dispersing agent is one or more of fatty acids CK-921 and CK-922 of New materials science and technology Limited of Tianjin Gaoka, dioctyl sodium sulfosuccinate (OT-75) of Shandong Youso chemical science and technology Limited, and dispersing agent 5040; the leveling agent is one or more of organic silicon CK-113, CK-114 and CK-115 of Tianjin Gaoka New Material science and technology Limited and polyurethane RM-2020 of Shandong Youso chemical science and technology Limited.
The pure acrylic emulsion, the styrene-acrylic emulsion and the silicone-acrylic emulsion are purchased from Shandong Yousio chemical technology Co. The titanium dioxide is purchased from DuPont of America, and the model is one of R706, R900, R902, R931, R960, R102, R103, R104 and R105. Talcum powder is purchased from Taiding Huaxin mineral products processing Co., Ltd, sea city, 325 meshes 1500. The calcined kaolin is purchased from mineral products, Limited liability company of Shanxi Jinkun with the mesh number of 500-1500. The heavy calcium carbonate is purchased from Shandong Yousio chemical engineering Co., Ltd, and the mesh number is 400-1400.
The inorganic coating stabilizer STAB PG and the inorganic coating stabilizer STAB PV are purchased from Shanghai Kangji chemical industry Co., Ltd; silicate coating stabilizer LOPON827 available from Aohan chemical engineering, Inc. in Oriental, Beijing; the silicate coating stabilizer LOPON @ ST was purchased from Onhames Korea, Inc., Beijing Oriental.
The silica sol is alkaline silica sol and is purchased from Shandong Yousio chemical technology Co.
Example 1
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 25g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane (KH-560) and 300g of ground calcium carbonate (1250 meshes) are placed in a stirring tank, 200g of absolute ethyl alcohol and 50g of water are added, the mixture is stirred for 5 hours, the mixture is placed in an oven at 80 ℃ for drying for 2 hours, and then the mixture is ground and ground into powder, so that 325g of modified inorganic filler, namely the modified inorganic filler, is obtained. The result of detection by an infrared absorption spectrometer FTIR (instrument model Nicolet 6700) is shown in figure 7, and the organic modifier and the heavy calcium carbonate successfully form chemical combination.
The contact angle of the heavy calcium carbonate and the modified inorganic filler was measured by using a contact angle measuring instrument model SL200KB, and it can be seen from FIG. 8 that the contact angle of the KH-560 modified heavy calcium carbonate with water was increased to 16.6 degrees compared with the unmodified heavy calcium carbonate.
(2) Modified potassium silicate: placing 15g of vinyl triethoxysilane and 220g of pure potassium silicate in a three-neck flask with a water bath device, stirring at constant temperature of 45 ℃ for 2h, cooling to room temperature, adding 4g of LOPON @ ST stabilizer, standing at room temperature for 3h, and fully premixing to obtain modified potassium silicate239g, structure as shown in figure 10, wherein A, B is pure potassium silicate, C, D, E is modified potassium silicate, 3296cm-1And 1637cm-1Is tensile vibration peak of OH < - > in potassium silicate, 2855cm-1And 2932cm-1is-CH in a silane coupling agent2or-CH3Absorption vibration peak of 1013cm-1Is the antisymmetric stretching vibration peak of Si-O-Si, and can be obtained by analysis, and the silane coupling agent reacts with silanol groups on the potassium silicate.
The same method is adopted to respectively replace pure potassium silicate with sodium silicate and silica sol to respectively obtain 239g of modified sodium silicate and 239g of modified silica sol.
The modified inorganic film-forming base material comprises the following components: 55g of modified potassium silicate, 56g of modified sodium silicate and 60g of modified silica sol.
2. Inorganic silicate paint for inner wall
Referring to the flow of FIG. 6, 350g of water, 6.5g of dispersing agent 5040, 8g of defoaming agent CK-231, 7g of leveling agent CK-113 and 8g of 2-amino-2-methyl-1-propanol are added into a stirring tank, and the mixture is stirred for 5min at the rotating speed of 800 r/min; then adding 200g of the modified inorganic filler prepared in the step (1), and stirring for 45min at 1000 r/min; and (3) adding 171g of the modified inorganic film-forming base material prepared in the step (2) and 35g of pure acrylic emulsion, stirring for 5min at the rotating speed of 900r/min, finally adding 7g of hydroxyethyl cellulose, stirring for 30min at the rotating speed of 900r/min, discharging to obtain 792.5g of the inorganic silicate interior wall coating, coating on tinplate, and covering the ground color.
Drying time of the coating: the measurement is performed by a finger-touch method in GB/T1728-79(89), and the measurement is started from the time when the plate surface is coated, and the measurement is performed by lightly touching with a finger until the finger is pressed down on the plate surface properly and forcefully, and the measurement is performed as the cut-off time when no finger print exists.
Coating hardness: the hardness is measured by scratching the coating film with a hard object on the surface of the paint film by a scratch hardness method of GB/T6739-86; the hardness of the pencil is commonly 13 grades from 6B to 6H, and the pencil can be manually operated and also can be tested by an instrument.
Coating adhesion force: according to a grid cutting method of GB/T9286-88, a grid with the space of 1mm is cut by a cutter in a criss-cross mode, the number of the grids is 5 multiplied by 5, and then the grids are graded according to a rating standard specified in GB/T9286-88, wherein the grade 0 is the best, the grade 5 is the worst, and specifically: the 0-level cutting edge is completely smooth, and no lattice falls off; in level 1, a little coating falls off at the intersection of the cuts, but the cross cutting area is not influenced by more than 5 percent; the coating at the intersection of the cuts and/or along the edges of the cuts falls off in the 2-stage, and the affected cross cutting area is obviously more than 5 percent but not obviously more than 15 percent; the 3-level coating partially or completely falls off in large fragments along the cutting edge and/or on the upper part or the whole of different parts of the grid, and the affected cross cutting area is obviously more than 15 percent but not more than 35 percent; the level 4 coating falls off along the cutting edge in large pieces, and/or some of the pieces fall off partially or completely, and the affected cross cutting area is obviously more than 35 percent, but not more than 65 percent; grade 5 spalled to a degree exceeding grade 4.
Paint contrast ratio (hiding ratio): the inorganic coating is uniformly coated on the surface of an object, and the capability of preventing the color of the substrate from appearing is called hiding power through the absorption, reflection and scattering of the coating to light, which is determined by GB/T1726-79 (89). With the minimum amount of coating (g/m) required to cover a unit area2) The hiding power is indicated.
Material workability: the brushing performance is detected according to the GB/T6753.6-86 standard, and the coating is easy to construct and the obtained coating can be quickly leveled without sagging, wrinkling, shrinkage, bleeding, undercut or yellowing and the like in the process of brushing until a dry coating is formed.
And (3) low-temperature stability of the material: according to the national standard of GB/T9755, a paint sample is filled into a plastic or glass container of about 1L, the container is approximately filled and sealed, the container is placed into a low-temperature box at (-5 +/-2) DEG C, the container is taken out after 18 hours, the container is placed in an environment with the standard temperature of 23 +/-2 ℃ and the relative humidity of 50% +/-5% for 6 hours, after the steps are repeated for three times, the container is opened, the sample is fully stirred, and the phenomena of hard blocks, agglomeration and separation are observed, if not, the low-temperature stability is considered to be good.
The results are shown in Table 1.
Example 2
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: putting 8g of gamma-aminopropyltriethoxysilane, 300g of ground calcium carbonate (1400 meshes) and 100g of titanium dioxide (R706) into a stirring tank, adding 250g of anhydrous glycol and 50g of water, stirring for 4 hours, drying in an oven at 70 ℃ for 2.5 hours, grinding, and grinding to obtain 408g of modified inorganic filler.
(2) Modified potassium silicate: 12g of vinyltriethoxysilane and 230g of pure potassium silicate are placed in a three-necked flask with a water bath device, stirred at a constant temperature of 40 ℃ for 2.5h, cooled to room temperature, then added with 3g of LOPON @ ST stabilizer, and kept stand at room temperature for 3h for sufficient premixing, thus obtaining 245g of modified potassium silicate.
And respectively replacing pure potassium silicate with sodium silicate and silica sol by the same method to respectively obtain 245g of modified sodium silicate and 245g of modified silica sol.
The modified inorganic film-forming base material comprises the following components: 100g of modified potassium silicate and 90g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 300g of water, 2g of dispersing agent CK-921, 2g of defoaming agent CK-232, 1g of flatting agent CK-114 and 2g of monoethanolamine are added into a stirring tank, and stirring is carried out for 10min at the rotating speed of 600 r/min; then adding 250g of the modified inorganic filler prepared in the step (1), and stirring for 50min at 850 r/min; and (3) adding 190g of the modified inorganic film-forming base material and 40g of styrene-acrylic emulsion in the step (2), stirring for 8min at the rotating speed of 800r/min, finally adding 1.5g of hydroxyethyl cellulose, stirring for 35min at the rotating speed of 850r/min, and discharging to obtain 788.5g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 3
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 10g of gamma- (methacryloyloxy) propyl trimethoxy silane, 200g of ground calcium carbonate (1250 meshes), 80g of talcum powder (325 meshes) and 70g of titanium dioxide (R900) are placed in a stirring tank, 200g of absolute propanol and 40g of water are added, the mixture is stirred for 1.5h, the mixture is placed in an oven at 60 ℃ for drying for 3h, and then the mixture is ground into powder, so that 360g of modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of vinyl triethoxysilane and 210g of pure potassium silicate are placed in a three-necked flask with a water bath device, stirred at a constant temperature of 40 ℃ for 3 hours, cooled to room temperature, added with 5g of LOPON @ ST stabilizer, and kept stand at room temperature for 3.5 hours for sufficient premixing, so that 225g of modified potassium silicate is obtained.
The same method is adopted to respectively replace pure potassium silicate with sodium silicate and silica sol to respectively obtain 225g of modified sodium silicate and 225g of modified silica sol.
The modified inorganic film-forming base material comprises the following components: 120g of modified potassium silicate and 80g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 320g of water, 3.5g of dispersant CK-922, 4.1g of defoamer CK-233, 3g of leveling agent CK-115 and 2g of diethanolamine are added into a stirring tank, and the mixture is stirred for 8min at the rotating speed of 500 r/min; then adding 280g of the modified inorganic filler in the step (1), and stirring for 40min at 1200 r/min; and (3) adding 200g of the modified inorganic film-forming base material and 45g of the silicone-acrylic emulsion obtained in the step (2), stirring at the rotating speed of 800r/min for 15min, finally adding 6g of sodium carboxymethylcellulose, stirring at the rotating speed of 800r/min for 30min, and discharging to obtain 863.6g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 4
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 10g of vinyltrimethoxysilane, 160g of ground calcium carbonate (1000 meshes), 50g of talcum powder (600 meshes), 40g of calcined kaolin (1500 meshes) and 60g of titanium dioxide (R902) are placed in a stirring tank, 200g of anhydrous propylene glycol and 30g of water are added, the mixture is stirred for 2.0h, the mixture is placed in an oven at 50 ℃ for drying for 4h, then the mixture is ground, and the ground mixture is ground into powder, so that 320g of modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of gamma- (methacryloyloxy) propyl trimethoxy silane and 210g of pure potassium silicate are placed in a three-neck flask with a water bath device, stirred at the constant temperature of 40 ℃ for 3 hours, cooled to the room temperature, then 5g of STAB PG stabilizer is added, and the mixture is kept stand at the room temperature for 3.0 hours and fully premixed to obtain 225g of modified potassium silicate.
The same method is adopted to respectively replace pure potassium silicate with sodium silicate and silica sol to respectively obtain 225g of modified sodium silicate and 225g of modified silica sol.
The modified inorganic film-forming base material comprises the following components: 80g of modified potassium silicate, 80g of modified sodium silicate and 60g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 400g of water, 1g of dispersant OT-75, 3g of organic silicon defoamer, 4g of flatting agent RM-2020 and 3g of triethanolamine are added into a stirring tank, and stirring is carried out for 15min at the rotating speed of 700 r/min; then adding 300g of the modified inorganic filler obtained in the step (1), and stirring for 45min at 1300 r/min; and (3) adding 220g of the modified inorganic film-forming base material and 50g of the pure acrylic emulsion in the step (2), stirring for 10min at the rotating speed of 800r/min, finally adding 6g of hydroxyethyl cellulose, stirring for 55min at the rotating speed of 700r/min, and discharging to obtain 987g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 5
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 13g of gamma- (2, 3-glycidoxy) propyl trimethoxy silane, 250g of ground calcium carbonate (800 meshes), 80g of calcined kaolin (1250 meshes) and 80g of talcum powder (800 meshes) are placed in a stirring tank, 250g of anhydrous glycerol and 27g of water are added, the mixture is stirred for 2.5 hours, the mixture is placed in an oven at 90 ℃ for drying for 1.5 hours, and then the mixture is ground into powder, so that 423g of modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of gamma- (methacryloyloxy) propyl trimethoxy silane and 220g of pure potassium silicate are placed in a three-neck flask with a water bath device, stirred at the constant temperature of 40 ℃ for 3 hours, cooled to the room temperature, then 4g of STAB PV stabilizer is added, and the mixture is kept stand at the room temperature for 3.0 hours and fully premixed to obtain 234g of modified potassium silicate.
By adopting the same method, the sodium silicate and the silica sol are respectively used for replacing pure potassium silicate, and 234g of modified sodium silicate and 234g of modified silica sol are respectively obtained.
The modified inorganic film-forming base material comprises the following components: 120g of modified potassium silicate and 100g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 420g of water, 4g of dispersing agent 5040, 1g of NXZ defoaming agent, 3g of flatting agent CK-113 and 2g of dimethylethanolamine are added into a stirring tank, and the mixture is stirred for 10min at the rotating speed of 900 r/min; then adding 350g of the modified inorganic filler in the step (1), and stirring for 55min at 1400 r/min; and (3) adding 220g of the modified film-forming base material in the step (2) and 60g of styrene-acrylic emulsion, stirring for 10min at the rotating speed of 700r/min, finally adding 5g of hydroxyethyl cellulose, stirring for 45min at the rotating speed of 800r/min, and discharging to obtain 1065g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 6
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 14g of vinyl tris (2-methoxyethoxy) silane, 200g of ground calcium carbonate (600 meshes), 75g of calcined kaolin (1000 meshes), 75g of talcum powder (1000 meshes) and 80g of titanium dioxide (R931) are placed in a stirring tank, 280g of absolute ethyl alcohol and 26g of water are added, the mixture is stirred for 3 hours, the mixture is placed in a 100 ℃ oven for drying for 1 hour, and then the mixture is ground into powder, so that 444g of modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and 220g of pure potassium silicate are placed in a three-neck flask with a water bath device, stirred at the constant temperature of 40 ℃ for 3 hours, cooled to room temperature, then added with 4g of LOPON827 stabilizer, and kept stand at room temperature for 3.0 hours for sufficient premixing to obtain 234g of modified potassium silicate.
By adopting the same method, the sodium silicate and the silica sol are respectively used for replacing pure potassium silicate, and 234g of modified sodium silicate and 234g of modified silica sol are respectively obtained.
The modified inorganic film-forming base material comprises the following components: 100g of modified potassium silicate and 120g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 450g of water, 3g of CK-921, 4g of CK-231, 3g of CK-114 and 3g of 2-amino-2-methyl-1-propanol are added into a stirring tank, and stirring is carried out for 15min at the rotating speed of 600 r/min; then adding 400g of the modified inorganic filler in the step (1), and stirring for 60min at 1500 r/min; and (3) adding 220g of the modified inorganic film-forming base material and 75g of the silicone-acrylic emulsion obtained in the step (2), stirring at the rotating speed of 800r/min for 10min, finally adding 4g of hydroxyethyl cellulose, stirring at the rotating speed of 800r/min for 40min, and discharging to obtain 1162g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 7
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 16g of vinyl triacetoxysilane, 220g of heavy calcium carbonate (400 meshes), 80g of calcined kaolin (800 meshes), 80g of talcum powder (1250 meshes) and 85g of titanium dioxide (R960) are placed in a stirring tank, 300g of anhydrous glycol and 69g of water are added, stirring is carried out for 3.5h, drying is carried out for 1.5h in an oven with the temperature of 100 ℃, grinding is carried out, and the modified inorganic filler is ground into powder, so that 481g of the modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of vinyl tri (2-methoxyethoxy) silane and 200g of pure potassium silicate are placed in a three-necked flask with a water bath device, stirred for 3 hours at a constant temperature of 40 ℃, cooled to room temperature, then added with 4g of STAB PG stabilizer, and kept stand for 3.0 hours at room temperature for full premixing, thus obtaining 214g of modified potassium silicate.
The same method is adopted to respectively replace pure potassium silicate with sodium silicate and silica sol to respectively obtain 214g of modified sodium silicate and 214g of modified silica sol.
The modified inorganic film-forming base material comprises the following components: 100g of modified potassium silicate, 100g of modified sodium silicate and 80g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 470g of water, 4g of dispersing agent CK-922, 3g of defoaming agent CK-232, 5g of leveling agent CK-115 and 1g of monoethanolamine are added into a stirring tank, and stirring is carried out for 15min at the rotating speed of 700 r/min; then 440g of the modified inorganic filler in the step (1) is added, and the mixture is stirred for 40min at 1200 r/min; and (3) adding 280g of the modified inorganic film-forming base material and 80g of the pure acrylic emulsion in the step (2), stirring for 15min at the rotating speed of 800r/min, finally adding 5g of hydroxyethyl cellulose, stirring for 50min at the rotating speed of 850r/min, and discharging to obtain 1288g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Example 8
1. Modified inorganic filler and modified inorganic film-forming base material
(1) Modified inorganic filler: 19g of vinyl tert-butyl hydroperoxide, 240g of ground calcium carbonate (400 meshes), 85g of talcum powder (1500 meshes), 85g of calcined kaolin (500 meshes) and 90g of titanium dioxide (R103) are placed in a stirring tank, 350g of anhydrous propylene glycol and 81g of water are added, the mixture is stirred for 5 hours, the mixture is placed in an oven at 100 ℃ for drying for 3 hours, and then the mixture is ground into powder, so that 519g of modified inorganic filler is obtained.
(2) Modified potassium silicate: 10g of vinyl triacetoxysilane and 220g of pure potassium silicate are placed in a three-neck flask with a water bath device, stirred for 3h at the constant temperature of 40 ℃, cooled to the room temperature, then 4g of STAB PV stabilizer is added, and the mixture is kept stand for 3.0h at the room temperature for sufficient premixing, thus obtaining 234g of stably modified potassium silicate.
By adopting the same method, the sodium silicate and the silica sol are respectively used for replacing pure potassium silicate, and 234g of modified sodium silicate and 234g of modified silica sol are respectively obtained.
The modified inorganic film-forming base material comprises the following components: 110g of modified potassium silicate, 110g of modified sodium silicate and 80g of modified silica sol.
2. Inorganic silicate paint for inner wall
Firstly, 500g of water, 10g of dispersant OT-75, 10g of defoamer CK-233, 10g of leveling agent RM-2020 and 10g of diethanolamine are added into a stirring tank, and the mixture is stirred for 10min at the rotating speed of 800 r/min; then 460g of modified inorganic filler in the step (1) is added, and the mixture is stirred for 30min at 1500 r/min; and (3) adding 300g of the modified inorganic film-forming base material and 100g of styrene-acrylic emulsion obtained in the step (2), stirring for 15min at the rotating speed of 900r/min, finally adding 10g of hydroxyethyl cellulose sodium, stirring for 45min at the rotating speed of 800r/min, and discharging to obtain 1410g of the inorganic silicate interior wall coating.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
Comparative example 1 preparation of silicate coating with unmodified inorganic Filler
Firstly, 500g of water, 10g of dispersant OT-75, 10g of defoamer CK-233, 10g of leveling agent RM-2020 and 10g of diethanolamine are added into a stirring tank, and the mixture is stirred for 10min at the rotating speed of 800 r/min; then 90g of titanium dioxide (R103), 85g of calcined kaolin (500 meshes), 240g of ground calcium carbonate (400 meshes) and 85g of talcum powder (1500 meshes) are added, and the mixture is stirred for 40min at 1400R/min; then 110g of potassium silicate, 110g of sodium silicate, 80g of silica sol and 100g of styrene-acrylic emulsion are added, the mixture is stirred for 15min at the rotating speed of 900r/min, finally 10g of hydroxyethyl cellulose sodium is added, the mixture is stirred for 30min at the rotating speed of 800r/min, and 1450g of silicate coating is obtained after discharging.
The paint properties were measured by the method of example 1 and the results are shown in Table 1.
The following tables show the data of the coatings prepared in examples 1-8 and comparative example 1, and according to the data, the inorganic silicate interior wall coating prepared by modifying the inorganic filler with a proper amount of organic modifier has better performance.
TABLE 1 Properties of the coatings prepared in examples 1-8, comparative example 1
Table 1 shows that when the unmodified and purified inorganic filler, the pure silicate and the silica sol are added, the adhesion and the hardness of the coating are slightly reduced, and the test result of the low-temperature storage stability at the temperature of minus 5 +/-2 ℃ is unstable.
Claims (10)
1. The inorganic silicate interior wall coating is characterized by comprising the following raw materials in parts by mass: 500 parts of water 300-containing material, 1-10 parts of dispersing agent, 1-10 parts of defoaming agent, 1-10 parts of flatting agent, 1-10 parts of pH regulator, 500 parts of modified inorganic filler 200-containing material, 300 parts of modified inorganic film-forming base material, 30-100 parts of organic emulsion and 1-10 parts of thickening agent;
the modified inorganic filler is prepared by the following method: placing an organic modifier a and an inorganic filler in a stirring tank, adding organic alcohol and water, stirring for 1-5 hours, placing in a drying oven at 50-150 ℃ for drying for 1-5 hours, and then grinding to obtain a modified inorganic filler; the organic modifier a is one or more of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, vinyltriacetoxysilane, vinyltri-tert-butylhydroperoxide, N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, aniline methyl triethoxysilane or gamma-mercaptopropyltrimethoxysilane; the inorganic filler is one or a mixture of more of titanium dioxide, calcined kaolin, heavy calcium carbonate or talcum powder; the organic alcohol is one or more of ethanol, ethylene glycol, propanol, propylene glycol or glycerol;
the modified inorganic film-forming base material is one or a mixture of more of modified silica sol, modified potassium silicate and modified sodium silicate, and the modified potassium silicate is prepared by the following method: stirring the organic modifier b in a three-neck flask to fully hydrolyze and condense the organic modifier b, adding potassium silicate, stirring and mixing, finally adding a stabilizer, and standing at room temperature for 2-4h to obtain modified potassium silicate; under the same condition, replacing potassium silicate with silica sol or sodium silicate to respectively obtain modified silica sol and modified sodium silicate; the organic modifier b is one or more of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, gamma- (methacryloyloxy) propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, vinyltriacetoxysilane, vinyltri-tert-butylhydroperoxide, N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, aniline methyl triethoxysilane and gamma-mercaptopropyltrimethoxysilane; the modified inorganic film-forming base material is one or a mixture of more of modified silica sol, modified potassium silicate and modified sodium silicate; the stabilizer is one or more of inorganic coating stabilizer STAB PG, inorganic coating stabilizer STAB PV, potassium silicate coating stabilizer LOPON827 and silicate coating stabilizer LOPON @ ST;
the dispersant is one or more of dispersant CK-921, dispersant CK-922, dispersant OT-75 or dispersant 5040;
the defoaming agent is one or more of a defoaming agent CK-231, a defoaming agent CK-232, a defoaming agent CK-233, an organic silicon defoaming agent and a defoaming agent NXZ;
the leveling agent is one or more of a leveling agent CK-113, a leveling agent CK-114, a leveling agent CK-115 and a leveling agent RM-2020;
the pH regulator is one or more of 2-amino-2-methyl-1-propanol, monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine and N-methylethanolamine;
the thickening agent is one of carboxymethyl cellulose, hydroxyethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, methyl cellulose and ethyl cellulose;
the organic emulsion is one of styrene-acrylic emulsion, silicone-acrylic emulsion and pure acrylic emulsion.
2. The inorganic silicate interior wall coating according to claim 1, wherein the mass ratio of the inorganic filler to the organic modifier a is 1: 0.01-1.0; the mass ratio of the inorganic filler to the organic alcohol is 1: 0.1-1.0; the mass ratio of the inorganic filler to the water is 1: 0.05-1.0.
3. The inorganic silicate interior wall coating according to claim 1, wherein the mass ratio of the potassium silicate to the organic modifier b is 1:0.01 to 0.1; the mass ratio of the potassium silicate to the stabilizer is 1: 0.01-0.1.
4. The inorganic silicate interior wall coating according to claim 1, wherein the inorganic silicate interior wall coating comprises the following raw materials in parts by mass: 500 parts of 320-one water, 2-7 parts of dispersing agent, 2-8 parts of defoaming agent, 2-7 parts of flatting agent, 1-8 parts of pH regulator, 460 parts of modified inorganic filler, 300 parts of modified inorganic film-forming base material 170-one organic emulsion and 4-7 parts of thickening agent.
5. The inorganic silicate interior wall coating according to claim 1, wherein said inorganic filler is one of the following: (1) mixing the heavy calcium carbonate and the titanium dioxide according to the mass ratio of 3: 1; (2) mixing the heavy calcium carbonate with the titanium dioxide and the talcum powder according to the mass ratio of 20:8: 7; (3) mixing heavy calcium carbonate with talcum powder and calcined kaolin according to the mass ratio of 25:8: 8; (4) mixing the heavy calcium carbonate, the titanium dioxide, the calcined kaolin and the talcum powder according to the mass ratio of 1:0.3-0.4:0.2-0.4: 0.2-0.4.
6. The inorganic silicate interior wall coating according to claim 5, wherein said titanium dioxide is one of R706, R900, R902, R931, R960, R102, R103, R104, R105.
7. The inorganic silicate interior wall coating according to claim 1, wherein the modified inorganic film-forming binder comprises one of the following: (1) mixing the modified potassium silicate and the modified silica sol in a mass ratio of 1: 0.1-2; (2) mixing the modified potassium silicate, the modified sodium silicate and the modified silica sol according to the mass ratio of 1:0.1-2: 0.1-2.
8. The inorganic silicate interior wall coating according to claim 1, wherein the organic modifier a and the organic modifier b are each one of γ -aminopropyltrimethoxysilane, γ - (2, 3-glycidoxy) propyltrimethoxysilane, γ - (methacryloyloxy) propyltrimethoxysilane and vinyltrimethoxysilane.
9. A process for the preparation of the inorganic silicate interior wall coating of claim 1, characterized in that the process is carried out according to the following steps: adding water, a dispersing agent, a defoaming agent, a flatting agent and a pH regulator into a stirring tank according to the formula amount, and stirring for the first time for 5-15min at the rotating speed of 500-1500 r/min; then adding modified inorganic filler, and stirring for 20-60min at the speed of 1000-; then adding the modified inorganic film-forming base material and the organic emulsion, stirring for the third time for 5-15min at the rotating speed of 500-1000r/min, finally adding the thickening agent, stirring for the fourth time for 20-50min at the rotating speed of 400-1000r/min, and discharging to obtain the inorganic silicate interior wall coating.
10. The method as set forth in claim 9, wherein the first stirring condition is 600-1000r/min stirring for 10-15 min; the second stirring condition is 1500-; the third stirring condition is 700-; the fourth stirring condition is 700-1000r/min for 30-50 min.
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