CN114891377A - Inorganic diatom ooze and preparation method thereof - Google Patents
Inorganic diatom ooze and preparation method thereof Download PDFInfo
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- CN114891377A CN114891377A CN202111501587.0A CN202111501587A CN114891377A CN 114891377 A CN114891377 A CN 114891377A CN 202111501587 A CN202111501587 A CN 202111501587A CN 114891377 A CN114891377 A CN 114891377A
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Images
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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
- 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
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
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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
- 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
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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
- 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
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides inorganic diatom ooze which is prepared from a base material, a pigment, a filler, an auxiliary agent and water. The application also provides a preparation method of the inorganic diatom ooze. This application is through various raw materials and content in adjustment base material, pigment, filler and the auxiliary agent, finally makes inorganic diatom mud both have the purification and adsorb, remove aldehyde function, and the illumination discolours, still has functions such as fire prevention fire-retardant, durable, green.
Description
Technical Field
The invention relates to the technical field of decorative materials, in particular to inorganic diatom ooze and a preparation method thereof.
Background
With the improvement of living standard and the enhancement of health and environmental protection consciousness, people put higher requirements on the selection and use of materials for home decoration. In the increasingly competitive industry, how to meet the use requirements of people on the interior decoration materials of furniture becomes a priority for various manufacturers. At present, the traditional diatom ooze material on the market is organic matter, and although the diatom ooze material has certain adsorption and purification functions, the durability is relatively poor, and the decorative effect is single. In addition, the common diatom ooze can react with oxygen to release a large amount of carbon dioxide and nitrogen in the film forming process, and release extremely toxic smoke dust when meeting high temperature, so that the diatom ooze is not flame retardant.
Therefore, the diatom ooze in the prior art has single decoration, no fireproof and flame-retardant property, low endurance life and high emission of carbide and nitride.
Disclosure of Invention
The invention aims to provide the inorganic diatom ooze which has multiple functions and is green and environment-friendly.
In view of the above, the present application provides an inorganic diatom ooze, which is prepared from a base material, a pigment, a filler, an auxiliary agent and water; taking the inorganic diatom ooze as a base,
the base material comprises: 15-30 parts of water glass, 5-15 parts of silica sol and 5-10 parts of pure acrylic emulsion;
the pigment comprises: 8-15 parts of titanium dioxide, 15-30 parts of photosensitive variable toner and 1-2 parts of photocatalyst;
the filler comprises: 5-15 parts of talcum powder, 5-10 parts of perlite, 3-8 parts of sepiolite, 8-15 parts of diatomite, 3-8 parts of glass powder and 1-5 parts of rock wool fiber;
the auxiliary agent comprises: 0.2-1.0 part by weight of a stabilizer, 0-2.0 parts by weight of a pH regulator, 0.2-0.5 part by weight of a dispersant, 0.1-0.5 part by weight of an antifoaming agent, 0.2-2.0 parts by weight of a flatting agent, 0.2-2.0 parts by weight of a thickener, 0-2.0 parts by weight of a preservative, 0-2.0 parts by weight of a mildew preventive, and 0.1-0.2 parts by weight of a wetting agent.
Preferably, the water glass is selected from potassium water glass, and the modulus of the potassium water glass is 1-4.
Preferably, the average particle size of the silica sol is 10 to 20 nm.
Preferably, the perlite is expanded perlite with the particle size of 300-400 meshes, and the sepiolite with the particle size of 800-1000 meshes.
Preferably, the photosensitive color-changing powder has an average particle size of 2 to 4 μm and a microcapsule structure.
Preferably, the stabilizer is selected from LOPON ST stabilizer, the dispersant is selected from Hydropalat306 dispersant, and the leveling agent is selected from polyurethane leveling agents DSX 3000; the defoaming agent is selected from fomasterNXZ defoaming agent, and the thickening agent is selected from DSX3256 thickening agent.
Preferably, the preservative is selected from QDTS-H and RHA-ZM, the content of the QDTA-H is 0.3-0.5 part by weight, and the content of the RHA-ZM is 0.5-1 part by weight.
Preferably, the pH modifier is selected from SILRES BS 168.
Preferably, the pH of the inorganic diatom ooze is 8.5-10.0.
The application also provides a preparation method of the inorganic diatom ooze, which comprises the following steps:
mixing the pigment, the filler and water according to a ratio to obtain an initial mixture;
and mixing the initial mixture, the auxiliary agent and the base material to obtain the diatom ooze.
The application provides an inorganic diatom ooze, it is obtained by base-material, pigment, filler, auxiliary agent and water preparation, this application through various raw materials and content in adjustment base-material, pigment, filler and the auxiliary agent, finally make inorganic diatom ooze both have purify the absorption, remove aldehyde function, but and illumination discolour, still have functions such as fire prevention fire-retardant, durable, green.
Drawings
FIG. 1 is a schematic view of the preparation process of inorganic diatom ooze of the present invention.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
In view of the problems of single decoration, low endurance life and high emission of carbides and nitrides in the inorganic diatom ooze in the prior art, the embodiment of the invention discloses the inorganic diatom ooze, which not only keeps the functions of purification, adsorption and aldehyde removal of the traditional diatom ooze, but also solves the problem of single decoration of the traditional diatom ooze by changing color through illumination, and has the performances of fire resistance, flame retardance, durability, environmental protection and the like. Specifically, the application provides inorganic diatom ooze which is prepared from a base material, a pigment, a filler, an auxiliary agent and water; taking the inorganic diatom ooze as a base,
the base material comprises: 15-30 parts of water glass, 5-15 parts of silica sol and 5-10 parts of pure acrylic emulsion;
the pigment comprises: 8-15 parts of titanium dioxide, 15-30 parts of photosensitive toner and 1-2 parts of photocatalyst;
the filler comprises: 5-15 parts of talcum powder, 5-10 parts of perlite, 3-8 parts of sepiolite, 8-15 parts of diatomite, 3-8 parts of glass powder and 1-5 parts of rock wool fiber;
the auxiliary agent comprises: 0.2-1.0 part by weight of stabilizer, 0-2.0 parts by weight of pH regulator, 0.2-0.5 part by weight of dispersant, 0.1-0.5 part by weight of defoamer, 0.2-2.0 parts by weight of flatting agent, 0.2-2.0 parts by weight of thickener, 0-2.0 parts by weight of preservative, 0-2.0 parts by weight of mildew preventive and 0.1-0.2 parts by weight of wetting agent.
In the diatom ooze provided by the application, the base material comprises water glass, silica sol and pure acrylic emulsion, wherein the water-soluble silicate is commonly called water glass and comprises lithium, sodium, potassium, ammonium water glass and the like. The potassium water glass has better caking property and film forming property than sodium water glass and lower price than lithium water glass and ammonium water glass, so the potassium water glass (K) is selected 2 O〃mSiO 2 〃nH 2 O). The modulus m represents SiO in water glass 2 /K 2 The value of O is generally 1-4, the modulus is high, the water resistance and heat resistance are improved, the film forming property and adhesive force are reduced, a paint film is easy to crack, and when m is larger than 4, the paint film is difficult to dissolve in water and is inconvenient to use. The coating has the advantages of low modulus, excellent film-forming property, poor high-temperature resistance and water resistance, and the modulus for the coating is generally 3-4. The potassium silicate has self-drying property, can react to generate a dry film insoluble in water, can react with substances with hydrophilic groups on the surface to form a film, has non-combustibility and non-smoke property, has good acid resistance, can form amorphous silicic acid gel in the air, can block capillary pores to prevent water from permeating, gradually dries and solidifies, is very slow in natural drying, and is used for accelerating dryingCuring agents may be added to dry and improve water resistance. When water glass is used as a base material, the water resistance is poor, modification is needed, and the modulus can be improved by adding inorganic or organic acid, so that the network structure of the-Si-O-Si-chain is enlarged; adding organic assistant, and substituting part of K with hydrophobic group + The water resistance of the coating film can be improved; the latex is filled in gaps of a-Si-O-Si-reticular structure for composite modification by adopting the latex, so that the residual hydroxyl groups can be shielded, the sensitivity of a coating film to water is reduced, the toughness and the impact resistance are improved, and the coating film has good water resistance, washing resistance and the like. The silicate with proper modulus is selected, has mild property and low pH value, and can be well compounded with the emulsion. The 'high silicon ratio' resin of Taiwan Philadelphia chemical company has the modulus m of 5.7, and the coating has the best comprehensive performance but high price. This application considers selecting products: HX-J2 from Guangxi company of Beijing Hongxing, DY-401 from the Dachen platform company, HQ-001 from Hengqi nanometer company of Suzhou, the technical indexes of which are shown in Table 1;
TABLE 1 technical Performance index of liquid Potassium silicate
As can be seen from Table 1, the modulus of HQ-001 is 4.8-5.6, the water solubility is not as good as HX-J2 and DY-401, and the price is high. Therefore, HX-J2 with a modulus of 3.5-3.7 and SiO is selected 2 The content is 24.50%, and the paint is suitable for preparing paint.
The silica sol is also called colloidal silica and has a chemical formula of mSiO 2 ·nH 2 O, is SiO in the order of nanometers 2 The dispersion liquid in water has the grain diameter of 1-100 nm, is much smaller than the emulsion, and is SiO 2 The content is 20-35%, the highest content is 50%, and the dispersibility and the permeability are good. The fine particles can permeate into the base material through capillary action, and generate new silicate inorganic high molecular compounds with certain inorganic salts and metal oxides, and the adhesive force is strong. Through drying or sintering, a firm film can be formed, the film forming temperature is low, the film is compact and hard, static electricity is not generated, the pollution resistance is strong, the film can not be dissolved in water and deteriorated after being formed, and the high temperature resistance is realized. The rubber grains are synthesized into the steel through dehydration and condensation of adjacent-OH groups in Si-OHThe silicon-Si-O-Si-inorganic polymer network structure has the advantages of acid and alkali resistance, high compressive strength and hardness, good air permeability, inertia, no toxicity and stability. The Si-O bond has stronger rigidity, if the control is not good in gel drying, the shrinkage is larger during film forming, the defects of cracking, micropores and the like are easy to occur, and fiber or fibrous and flaky pigments and fillers are often added and organic high molecular film forming substances are added for compounding. The silica sol and the emulsion are in hydrogen bond association, the organic polymer is filled in gaps of a-Si-O-Si-network structure, the residual hydroxyl groups are shielded, the sensitivity of the coating film to water is reduced, the stretching effect of the coating film during cold and hot alternation is relaxed, and the toughness, the impact resistance, the water resistance and the like are improved. The charged property of the surface of the silica sol particle changes along with the pH value of the system, and the pH value is adjusted to 8.5-10.0 and is stabilized in a weak alkaline range when the composite coating is produced. The silica sol has an excessively large particle size and poor storage stability; the coating has the advantages of small particle size, increased dehydration condensation crosslinking reaction, long curing time, loose coating, easy crack generation, poor adhesive force and water resistance, and the best coating is prepared from the antifreezing silica sol with the particle size of 10-20 nm and high clarity and transparency. The method compares and selects CH83 in the Jiangyin national union chemical industry of Jiangyin, JFF-28 in the West outskirt chemical industry of Jiangyin and HX-30 in Guangxing Guangxi company of Beijing, and the technical indexes are shown in Table 2;
TABLE 2 technical Performance index of liquid silica sols
As can be seen from Table 2, the SiO of these 3 silica sols 2 The content difference is small, wherein JFF-28 is antifreeze type, the average grain diameter is 10-20 nm, the rest 2 are non-antifreeze type, and the grain diameter of HX-30 is slightly smaller, so JFF-28 is selected.
The coating with high comprehensive performance can be obtained only by selecting proper emulsion and compounding inorganic resin, and the compatibility principle is the first important point. The pH value of the emulsion is 7-9 generally, the silicate is neutral and strong in alkalinity due to the preparation process, the key point is that the 2 substances are compounded and kept stable, and the high-temperature resistance is good, and the flexibility of a paint film can be improved. VOC in the coating mainly comes from emulsion, solvent, auxiliary agent and pH value regulationThe key point of the production of low VOC coating is that the lowest film-forming temperature of the emulsion is about 0 ℃, the emulsion can form a film without film-forming additives and solvents, and the residual monomer amount is 10 -6 And the emulsion grade, such as self-crosslinking acrylic acid, ethyl acetate copolymer, functional monomer modified emulsion, core-shell emulsion and the like. In the application, 4 low VOC emulsions such as SF-016 (styrene acrylic) of Rohm and Haas, S559 (pure acrylic) of Pasteur Angu, zero VOC emulsion (pure acrylic) of Shanghai Baote environmental protection material company, GP-110 (pure acrylic) of Shanghai Juning industry company and the like are selected for comparison. The emulsions do not need a film-forming assistant, have lower film-forming temperature, extremely low VOC content, do not contain polyoxyethylated alkylphenol emulsifier APE (APE has poor degradability and has interference effect on human body secretion), do not contain ammonia and formaldehyde, and are suitable for preparing low-VOC coatings and modified silicate coatings, and are shown in Table 3 specifically;
table 34 tables of main performance index data for low VOC emulsions
As can be seen from Table 3, the lowest film forming temperature of SF-016 and Baote low VOC emulsions is 0 ℃, S559 is <3 ℃, GP-110 is <5 ℃; in 4 kinds of emulsions, except S559 is styrene-acrylic emulsion, the other 3 kinds are pure acrylic emulsion, and SF-016 has glass transition temperature of-1 deg.C and Baote low VOC emulsion has glass transition temperature of 8 deg.C, from film forming temperature and glass transition temperature, SF-016 is selected preferably.
In the base material of the inorganic diatom ooze, the content of water glass is 15-30 parts by weight, the content of silica sol is 5-15 parts by weight, the content of pure acrylic emulsion is 5-10 parts by weight, more specifically, the content of water glass is 20-25 parts by weight, the content of silica sol is 8-16 parts by weight, and the content of pure acrylic emulsion is 8-12 parts by weight.
Further research in the application proves that the influence factors of the performance of the diatom ooze comprise potassium silicate, silica sol and emulsion, wherein the potassium silicate is used as a main film forming material, the silica sol is used as a secondary film forming material, the emulsion is used as a modifier, the combustion performance is influenced by the increase of the dosage of the emulsion, and the dosage cannot be too much; the ratio of potassium silicate, silica sol and emulsion was changed while keeping the amount and kind of pigment consistent, and the test ratios and results are shown in table 4.
TABLE 4 data table of the effect of inorganic film former to organic emulsion ratio on coating performance
As can be seen from Table 4, only the No. 1, No. 4 and No. 8 samples which meet the A2 grade combustion performance have the advantages of increased emulsion dosage, increased flexibility, reduced combustion performance and basically meeting the VOC content requirement, and the No. 8 formula is selected in a comprehensive consideration.
The heat-resistant filler has the characteristics of high temperature resistance, low thermal conductivity, small relative density, reasonable particle size distribution and the like, and zinc oxide, light calcium carbonate and lithopone are not suitable for the coating. The upper limit of the temperature is designed to be 600 ℃, and the lowest tolerance temperature of the temperature-resistant pigment and filler is not lower than 600 ℃. The melting point of the talcum powder is more than 1500 ℃, the talcum powder can improve the thermal elasticity and crack resistance of the coating, the rock wool fiber is soft, thin and elastic, and the rock wool fiber with proper length can prevent and reduce shrinkage cracking and high-temperature cracking in the drying process of the coating and improve the mechanical strength. The expanded perlite is white powder, and in order to keep the flatness of the coating, the particle size is 300-400 meshes, and the fire-resistant temperature is 1580-1770 ℃. The sepiolite is a non-combustible material with low density and low thermal conductivity, can improve the stability of the coating, reduces the using amount of an organic thickening agent, does not change the structure at the high temperature of 350 ℃, can resist the temperature of 1500-1700 ℃, can modify water glass inorganic base materials and improve the water resistance, and selects a 1000-mesh material. The composite coating contains a small amount of emulsion, which influences temperature resistance, so that the addition of part of glass powder for high-temperature paint with a lower melting point can meet the requirement of lasting high temperature resistance at 500-1100 ℃. When organic matters are decomposed and lose film-forming characteristics, the glass materials are melted and dissolved at a high temperature to form glass bodies, the glass bodies and inorganic materials interact to form a eutectic substance, the eutectic substance replaces the organic film-forming matters to continuously exert the adhesion film-forming property on pigments and matrixes, a coating with a more compact surface is formed, the functions of heat resistance, oxidation resistance and the like at a high temperature are borne, and 3-6 parts by weight of glass powder which can be respectively melted at 350 ℃, 500 ℃ and 650 ℃ is selected.
The rutile titanium dioxide R930 has a melting point of 1855 ℃, high glossiness, good covering power and tinting strength, easy dispersion and good durability. The titanium dioxide-nano titanium dioxide has a three-dimensional network structure, special optical performance, large specific surface area and extremely high activity, can improve the can opening effect, forms a network structure when the coating is dried, improves the strength, the smoothness and the stain resistance, keeps the coating not to fade, can form a shielding effect on the coating, resists ultraviolet aging and thermal aging, and improves the heat insulation performance of the coating. The photochromic powder has an average particle size of 3 +/-1 mu m and is a microcapsule structure, the molecular structure of the compound with the photochromic function can be reversibly changed under the excitation of a light source with certain wavelength and intensity, the color change is visually shown, and after the excitation is stopped, the structure of the compound can be restored to the initial state, and the color is visually shown to be faded to the initial state. The photocatalyst can generate a photocatalytic reaction similar to photosynthesis under the irradiation of light to generate free hydroxyl and active oxygen with extremely strong oxidizing power, has a very strong photoredox function, can oxidize and decompose various organic compounds and partial inorganic matters, can destroy cell membranes of bacteria and protein of solidified viruses, can kill bacteria and decompose organic pollutants, and decomposes the organic pollutants into pollution-free water and carbon dioxide, so that the photocatalyst has extremely strong functions of sterilization, deodorization, mildew prevention, pollution prevention, self-cleaning, formaldehyde removal and air purification.
In the filler provided by the application, the content of the talcum powder is 5-15 parts by weight, more specifically the content of the talcum powder is 8-12 parts by weight, the content of the titanium dioxide is 8-15 parts by weight, more specifically the content of the titanium dioxide is 8-10 parts by weight, the content of the perlite is 5-10 parts by weight, more specifically the content of the perlite is 6-8 parts by weight, the content of the sepiolite is 3-8 parts by weight, more specifically the content of the sepiolite is 4-6 parts by weight, the content of the diatomite is 8-15 parts by weight, more specifically the content of the diatomite is 10-12 parts by weight, the content of the glass powder is 3-8 parts by weight, more specifically the content of the glass powder is 4-6 parts by weight, the content of the rock wool fiber is 1-5 parts by weight, more specifically the content of the rock wool fiber is 2-4 parts by weight, and the content of the light-sensitive toner is 20-35, more particularly 25-30.
In the present application, the auxiliaries include: 0.2-1.0 part by weight of a stabilizer, 0-2.0 parts by weight of a pH regulator, 0.2-0.5 part by weight of a dispersant, 0.1-0.5 part by weight of an antifoaming agent, 0.2-2.0 parts by weight of a flatting agent, 0.2-2.0 parts by weight of a thickener, 0-2.0 parts by weight of a preservative, 0-2.0 parts by weight of a mildew preventive, and 0.1-0.2 parts by weight of a wetting agent.
Specifically, the auxiliary agent needs to be selected to be matched with the base material without solvent and environment-friendly, so as to achieve the characteristics of low or no odor, no formaldehyde, environmental protection and the like. The pH value of the emulsion is 7-8, the pH value of the water glass is 12-13, and the emulsion is easy to break when being mixed. The LOPON ST stabilizer is a mild surfactant, can be adsorbed on the surfaces of emulsion and water glass particles, avoids emulsion breaking and agglomeration, improves storage stability, reduces thickening phenomena, and has the addition amount of 0.2-0.6 part by weight. Hydropalat188A lipophilic low HLB hydroxyl-containing wetting agent can be adsorbed on the surface of inorganic particles to protect silica sol and improve stability, and the dosage is 0.2 weight part, so that the storage life of the coating can reach more than 6 months. Hydropalat306 dispersant can increase the protection to emulsion, improve emulsion with poor stability and stabilize emulsion system. In order to reduce VOC as much as possible and meet the conventional performance of the coating, the selection of the rheological additive is particularly important, and the solvent-free Newtonian non-polyurethane flatting agent DSX3000, the mineral oil-free defoamer foamasterNXZ and the zero-VOC solvent-free associative thickener DSX3256 are selected and matched. The inorganic antiseptic and mildew preventive are selected from the environmental protection aspect, and the inorganic antiseptic QDTS-H and RHA-ZM are compounded for use, so that the mildew resistance of the coating can reach 0 level. When the addition amount of the QDTS-H is 0.3-0.5 part by weight, the QDTS-H can permeate onto the capillary hole wall in the concrete, can generate a chemical reaction with air and water in the substrate, and is solidified on the inner wall and the surface of the capillary hole to play a role in resisting corrosion and repelling water; RHA-ZM is safe and highThe efficient broad-spectrum inorganic mildew inhibitor has an obvious effect of inhibiting and killing most of mould and bacteria when the addition amount is 0.5-1 part by weight, has long lasting period, has a decomposition temperature of more than 350 ℃, and has flame retardance. The pH regulator SILRES BS16 of Wake corporation is a special synthetic organic silicon aqueous solution, the dosage is 0.05-1.0 weight part, organic volatile matters are not contained, the main component potassium methyl siliconate is ionized in water to form OH < - >, the pH value can be regulated, and the potassium methyl siliconate is reacted with CO in the air when the coating is formed into a film and dried 2 The reaction generates silicone resin and potassium carbonate, no organic matter is discharged, and the water resistance and the scrubbing resistance of the coating can be improved.
In view of the above description, the inorganic diatom ooze provided by the application has the advantages that the inorganic diatom ooze not only has single adsorption and purification functions, but also has high durability and is environment-friendly by adding the components and adjusting the content of the components.
The application also provides a preparation method of the inorganic diatom ooze, which is specifically shown in figure 1 and comprises the following steps:
mixing the pigment, the filler and water according to a ratio to obtain an initial mixture;
and mixing the initial mixture, the auxiliary agent and the base material to obtain the diatom ooze.
In order to further understand the present invention, the following examples are provided to illustrate the inorganic diatom ooze of the present invention in detail, and the scope of the present invention is not limited by the following examples.
In the following examples, the specific sources of the respective raw materials are as follows:
1.1 base stocks
Potassium silicate HX-J2, Kyowa Kangsu, Beijing Red Star; JFF-28 parts of silica sol, Jiangyin Xisuburb chemical company; pure acrylic emulsion SF-016, Dow chemical;
1.2 pigments
The titanium dioxide is rutile type, R998 DuPont; the photosensitive color-changing powder is nano photosensitive color-changing powder, and NCC is advocated by Yu science and technology; the photocatalyst is P25, German Ludao Fuff;
1.3 Filler
Talcum powder 1250 mesh, Cixia City Huatai talcum powder factory; 400 mesh expanded perlite, kalanchoe thermal insulation material factory; sepiolite of 1000 mesh, majew of hong ke koi sepiolite of yi county; calcining diatomite, and leading Jilin to the mining industry; the glass powder has a melting point of 650 ℃, and is manufactured by Fushan glass crystal materials company; the rock wool fiber is MR9801, Lin Yixin friction material company;
1.4 auxiliaries
The stabilizer is L0PON ST, Australian Han company in Oriental Beijing; the pH regulator is SILRES BS168, Wacker company; the dispersant is selected from hydropalat306 and basf; antifoam foamasterNXZ, basf; leveling agent dsx3000, corning, germany; thickener dsx3256, corning, germany; preservative QDTS-H, Qingdaosheng sandisk corporation; mildew preventive RHA-ZM, Shanghai Rihua company; wetting agent hydropalat188A, basf;
examples
The specific formula of each component of the inorganic diatom ooze is as follows:
table 5 data table of contents of components in examples
The results of the tests of the present invention are shown in tables 6 and 7.
Table 6 data of general properties and harmful substances of inorganic diatom ooze in example 1
Table 7 data table of combustion performance test results of inorganic diatom ooze in example 1
Table 8 data table of general properties and harmful substances of inorganic diatom ooze in example 2
Table 9 data table of combustion performance test results of inorganic diatom ooze in example 2
Table 10 data table of general properties and harmful substances of inorganic diatom ooze in example 3
Table 11 data table of combustion performance test results of inorganic diatom ooze in example 3
Test results show that 3 examples of the prepared inorganic diatom ooze meet the design requirements, namely, the inorganic diatom ooze is low in VOC content, non-combustible in A2 level and resistant to mold reaches 0 level.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An inorganic diatom ooze is prepared from base material, pigment, filler, auxiliary agent and water; taking the inorganic diatom ooze as a base,
the base material comprises: 15-30 parts of water glass, 5-15 parts of silica sol and 5-10 parts of pure acrylic emulsion;
the pigment comprises: 8-15 parts of titanium dioxide, 15-30 parts of photosensitive variable toner and 1-2 parts of photocatalyst;
the filler comprises: 5-15 parts of talcum powder, 5-10 parts of perlite, 3-8 parts of sepiolite, 8-15 parts of diatomite, 3-8 parts of glass powder and 1-5 parts of rock wool fiber;
the auxiliary agent comprises: 0.2-1.0 part by weight of stabilizer, 0-2.0 parts by weight of pH regulator, 0.2-0.5 part by weight of dispersant, 0.1-0.5 part by weight of defoamer, 0.2-2.0 parts by weight of flatting agent, 0.2-2.0 parts by weight of thickener, 0-2.0 parts by weight of preservative, 0-2.0 parts by weight of mildew preventive and 0.1-0.2 parts by weight of wetting agent.
2. The inorganic diatom ooze according to claim 1, wherein said water glass is selected from potassium water glass, and the modulus of said potassium water glass is 1-4.
3. The inorganic diatom ooze according to claim 1, wherein the average particle size of the silica sol is 10-20 nm.
4. The inorganic diatom ooze according to claim 1, wherein the perlite is expanded perlite having a particle size of 300-400 mesh, and the sepiolite has a particle size of 800-1000 mesh.
5. The inorganic diatom ooze according to claim 1, wherein the photosensitive color-changing powder has an average particle size of 2 to 4 μm and a microcapsule structure.
6. The inorganic diatom ooze of claim 1, wherein said stabilizer is selected from LOPON ST stabilizers, said dispersant is selected from Hydropalat306 dispersants, and said leveling agent is selected from polyurethane-based leveling agents DSX 3000; the defoaming agent is selected from fomasterNXZ defoaming agent, and the thickening agent is selected from DSX3256 thickening agent.
7. The inorganic diatom ooze of claim 1, wherein the preservative is selected from the group consisting of QDTS-H and RHA-ZM, wherein the QDTA-H is present in an amount of 0.3 to 0.5 parts by weight and the RHA-ZM is present in an amount of 0.5 to 1 part by weight.
8. The inorganic diatom ooze of claim 1, wherein said pH adjusting agent is selected from SILRES BS 168.
9. The inorganic diatom ooze of claim 1, wherein the pH of the inorganic diatom ooze is 8.5-10.0.
10. A method of producing an inorganic diatom ooze according to any one of claims 1 to 9, comprising the steps of:
mixing the pigment, the filler and water according to a ratio to obtain an initial mixture;
and mixing the initial mixture, the auxiliary agent and the base material to obtain the diatom ooze.
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