CN117264445A - Inner wall fireproof paint based on metakaolin base polymer and preparation process thereof - Google Patents
Inner wall fireproof paint based on metakaolin base polymer and preparation process thereof Download PDFInfo
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- CN117264445A CN117264445A CN202310760022.7A CN202310760022A CN117264445A CN 117264445 A CN117264445 A CN 117264445A CN 202310760022 A CN202310760022 A CN 202310760022A CN 117264445 A CN117264445 A CN 117264445A
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- metakaolin
- base polymer
- mass ratio
- silica fume
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229920005601 base polymer Polymers 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003973 paint Substances 0.000 title claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 26
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 25
- 239000010452 phosphate Substances 0.000 claims abstract description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000003063 flame retardant Substances 0.000 claims abstract description 8
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 6
- 239000001038 titanium pigment Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims abstract description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 46
- 229910021487 silica fume Inorganic materials 0.000 claims description 44
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 34
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 28
- 239000007822 coupling agent Substances 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000003085 diluting agent Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 25
- 239000003513 alkali Substances 0.000 claims description 19
- 239000003822 epoxy resin Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 19
- 229920000647 polyepoxide Polymers 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- QQFLQYOOQVLGTQ-UHFFFAOYSA-L magnesium;dihydrogen phosphate Chemical compound [Mg+2].OP(O)([O-])=O.OP(O)([O-])=O QQFLQYOOQVLGTQ-UHFFFAOYSA-L 0.000 claims description 17
- CRGGPIWCSGOBDN-UHFFFAOYSA-N magnesium;dioxido(dioxo)chromium Chemical compound [Mg+2].[O-][Cr]([O-])(=O)=O CRGGPIWCSGOBDN-UHFFFAOYSA-N 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 17
- 229910000401 monomagnesium phosphate Inorganic materials 0.000 claims description 17
- 235000019785 monomagnesium phosphate Nutrition 0.000 claims description 17
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 17
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 17
- 229940072033 potash Drugs 0.000 claims description 16
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 16
- 235000015320 potassium carbonate Nutrition 0.000 claims description 16
- 235000019353 potassium silicate Nutrition 0.000 claims description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 9
- 239000012190 activator Substances 0.000 claims description 8
- 239000008213 purified water Substances 0.000 claims description 8
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002694 phosphate binding agent Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- 235000010215 titanium dioxide Nutrition 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229920000876 geopolymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
-
- 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 an inner wall fireproof paint based on metakaolin base polymer and a preparation process thereof, wherein the inner wall fireproof paint comprises the following raw materials in parts by weight: 50-60 parts of metakaolin base polymer, 30-40 parts of pure acrylic emulsion, 18-25 parts of composite phosphate adhesive, 20-28 parts of titanium dioxide and 65-75 parts of water. The invention takes metakaolin base polymer as base, and adds composite phosphate adhesive, pure acrylic emulsion, titanium pigment and water, and the inner wall fireproof paint is prepared by scientific proportioning, which not only has good adhesive property, but also has stronger crack resistance and fire resistance and heat insulation. The ingredients and the process are beneficial to the dispersion of raw materials, improve the stability of the coating, form a good fire-retardant barrier and improve the protection capability.
Description
Technical Field
The invention relates to the field of coatings, in particular to an inner wall fireproof coating based on metakaolin base polymer and a preparation process thereof.
Background
The geopolymer is an inorganic polymer with a three-dimensional network structure, and the structure of the geopolymer is formed by AlO 4 And SiO 4 The tetrahedral structural unit has good mechanical property, corrosion resistance and high temperature resistance, and good thermal stability, and can be applied to the fields of building materials, sealing materials, high temperature resistant materials and the like. Metakaolin takes kaolin as raw material, and the qualityThe metakaolin base polymer is stable, is one of main raw materials of the synthetic polymer, and has wide application prospect.
The inorganic coating is a coating taking inorganic materials as main film forming substances, does not burn when flame is impacted, and has excellent flame retardant property, environmental protection and low cost. But the coating is thick, easy to fall off, poor in adhesion, thin, low in fire resistance limit, high in brittleness, easy to crack, poor in wear resistance, low in mechanical property and low in protective capability at high temperature.
Disclosure of Invention
Accordingly, the invention provides an inner wall fireproof coating based on metakaolin base polymer and a preparation process thereof.
The technical scheme of the invention is realized as follows:
an inner wall fireproof coating based on metakaolin base polymer comprises the following raw materials in parts by weight: 50-60 parts of metakaolin base polymer, 30-40 parts of pure acrylic emulsion, 18-25 parts of composite phosphate adhesive, 20-28 parts of titanium dioxide and 65-75 parts of water.
Further, the interior wall fireproof paint comprises the following raw materials in parts by weight: 56 parts of metakaolin base polymer, 35 parts of pure acrylic emulsion, 20 parts of composite phosphate adhesive, 25 parts of titanium dioxide and 70 parts of water.
Further, the preparation of the metakaolin base polymer comprises the following steps:
(1) Adding potassium hydroxide into the potash water glass solution to prepare an alkali excitant; the mass ratio of the potassium hydroxide to the potash water glass solution is 1:9-11; the modulus of the alkali-activated agent is 1-1.5, and the concentration is 35-40%;
(2) Adding the silica fume into a reactor, heating in water bath, and adding titanate coupling agent diluent while stirring to obtain modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01 to 0.03;
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain the metakaolin base polymer.
Further, the preparation of the composite phosphate adhesive comprises the following steps: and adding phosphoric acid into the purified water, heating to 100-110 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 45-50 min to obtain the composite phosphate adhesive.
Further, in the step (2), the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and a diluent according to a mass ratio of 1:0.8-1.2; the diluent is anhydrous dimethylbenzene and/or butyl acetate.
Further, in the step (3), the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-exciting agent is 9-10:1-3:8-10: 7-8.
Further, the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 96-102:18-20:5-6:1-2:3-5.
Further, in the step (2), the water bath heating temperature is 55-65 ℃ and the heating time is 15-20 min.
Further, the preparation process of the inner wall fireproof coating based on the metakaolin base polymer comprises the following steps of: and mixing the metakaolin base polymer, the composite phosphate adhesive, the pure acrylic emulsion, the titanium pigment and the water, and stirring to obtain the coating.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention uses metakaolin base polymer base, adds composite phosphate adhesive, pure acrylic emulsion, titanium pigment and water, and scientifically mixes them to prepare the interior wall fireproof paint, which not only has good adhesive property, but also has stronger crack resistance and fire-resistant heat insulation. The ingredients and the process are beneficial to the dispersion of raw materials, improve the stability of the coating, form a good fire-retardant barrier and improve the protection capability.
(2) According to the invention, the silica fume is modified, so that the compatibility of the silica fume and the epoxy resin is improved; grinding the modified silica fume and the epoxy resin to ensure the two to be fully combined; the modified silica fume and epoxy resin are used for modifying metakaolin polymer, which is favorable for improving the fire resistance and cracking resistance of the coating, and the coating can achieve good fireproof effect by thin coating.
(3) The composite phosphate adhesive is favorable for improving the adhesive property of the coating, reducing the falling of the coating and improving the heat insulation and fire resistance.
Detailed Description
In order to better understand the technical content of the present invention, the following provides specific examples to further illustrate the present invention.
The experimental methods used in the embodiment of the invention are conventional methods unless otherwise specified.
Materials, reagents, and the like used in the examples of the present invention are commercially available unless otherwise specified.
Example 1-preparation method of metakaolin-based Polymer-based interior wall fireproof coating
(1) Adding potassium hydroxide and potash water glass solution into potash water glass solution with concentration of 30% and modulus of 3.2 according to mass ratio of 1:10 to obtain alkali activator with concentration of 35% and modulus of 1.5.
(2) Adding the silica fume into a reactor, heating in a water bath at 60 ℃ for 15min, and adding a titanate coupling agent diluent while stirring to prepare modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01; the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and anhydrous dimethylbenzene according to a mass ratio of 1:1.
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-exciting agent is 9:2:8:7.
(4) Adding phosphoric acid into purified water, heating to 100 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 45min to obtain a composite phosphate adhesive; the mass ratio of phosphoric acid, aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate is 96:18:5:2:3.
(5) 50 parts of metakaolin base polymer in the step (3), 18 parts of composite phosphate adhesive in the step (4), 30 parts of pure acrylic emulsion, 20 parts of titanium white and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Example 2-preparation method of metakaolin-based Polymer-based interior wall fireproof coating
(1) Adding potassium hydroxide and potash water glass solution into potash water glass solution with concentration of 30% and modulus of 3.2 according to mass ratio of 1:10 to obtain alkali activator with concentration of 35% and modulus of 1.5.
(2) Adding the silica fume into a reactor, heating in a water bath at 55 ℃ for 15min, and adding a titanate coupling agent diluent while stirring to prepare modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01; the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and anhydrous dimethylbenzene according to a mass ratio of 1:1.
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-exciting agent is 9:2:9:8.
(4) Adding phosphoric acid into purified water, heating to 105 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 50min to obtain a composite phosphate adhesive; the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 100:20:5:2:3.
(5) 56 parts of metakaolin base polymer in the step (3), 20 parts of composite phosphate adhesive in the step (4), 35 parts of pure acrylic emulsion, 25 parts of titanium white and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Example 3-preparation method of metakaolin-based Polymer-based interior wall fireproof coating
(1) Adding potassium hydroxide and potash water glass solution into potash water glass solution with concentration of 30% and modulus of 3.2 according to mass ratio of 1:10 to obtain alkali activator with concentration of 35% and modulus of 1.5.
(2) Adding the silica fume into a reactor, heating in a water bath at 65 ℃ for 15min, and adding a titanate coupling agent diluent while stirring to prepare modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01; the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and anhydrous dimethylbenzene according to a mass ratio of 1:1.
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-exciting agent is 10:3:10:8.
(4) Adding phosphoric acid into purified water, heating to 110 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 50min to obtain a composite phosphate adhesive; the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 100:20:6:2:4.
(5) 60 parts of metakaolin base polymer in the step (3), 25 parts of composite phosphate adhesive in the step (4), 40 parts of pure acrylic emulsion, 28 parts of titanium dioxide and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Comparative example 1
Based on example 2, the modified silica fume in step (3) was replaced with silica fume, the epoxy resin was replaced with ground heavy calcium carbonate, and the other steps were substantially the same as in example 2.
(1) Adding potassium hydroxide and potash water glass solution into potash water glass solution with concentration of 30% and modulus of 3.2 according to mass ratio of 1:10 to obtain alkali activator with concentration of 35% and modulus of 1.5.
(2) Mixing silica fume and heavy calcium powder, grinding, adding metakaolin and the alkali-exciting agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the coarse whiting powder to the silica fume to the alkali-exciting agent is 9:2:9:8.
(3) Adding phosphoric acid into purified water, heating to 105 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 50min to obtain a composite phosphate adhesive; the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 100:20:5:2:3.
(4) 56 parts of metakaolin base polymer in the step (3), 20 parts of composite phosphate adhesive in the step (4), 35 parts of pure acrylic emulsion, 25 parts of titanium white and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Comparative example 2
Based on example 2, the mass ratio of metakaolin, epoxy resin, modified silica fume and alkali-activator in step (3) was adjusted to 9:5:6:8, and the other steps were substantially the same as in example 2.
(1) Adding potassium hydroxide and potash water glass solution into potash water glass solution with concentration of 30% and modulus of 3.2 according to mass ratio of 1:10 to obtain alkali activator with concentration of 35% and modulus of 1.5.
(2) Adding the silica fume into a reactor, heating in a water bath at 55 ℃ for 15min, and adding a titanate coupling agent diluent while stirring to prepare modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01; the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and anhydrous dimethylbenzene according to a mass ratio of 1:1.
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-activated agent is 9:5:6:8.
(4) Adding phosphoric acid into purified water, heating to 105 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 50min to obtain a composite phosphate adhesive; the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 100:20:5:2:3.
(5) 56 parts of metakaolin base polymer in the step (3), 20 parts of composite phosphate adhesive in the step (4), 35 parts of pure acrylic emulsion, 25 parts of titanium white and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Comparative example 3
The mass ratio of phosphoric acid, aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate in step (4) was adjusted to 100:50:6:1:1 based on example 2, and the other steps were substantially identical to example 2.
(1) Adding potassium hydroxide and potash water glass solution with the concentration of 30% and the modulus of 3.2 into the potash water glass solution according to the mass ratio of 1:10 to prepare the alkali activator with the concentration of 35% and the modulus of 1.5.
(2) Adding the silica fume into a reactor, heating in a water bath at 55 ℃ for 15min, and adding a titanate coupling agent diluent while stirring to prepare modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01; the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and anhydrous dimethylbenzene according to a mass ratio of 1:1.
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain metakaolin base polymer; the mass ratio of the metakaolin to the epoxy resin to the modified silica fume to the alkali-exciting agent is 9:2:9:8.
(4) Adding phosphoric acid into purified water, heating to 105 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 50min to obtain a composite phosphate adhesive; the mass ratio of the phosphoric acid to the aluminum hydroxide to the aluminum tripolyphosphate to the magnesium dihydrogen phosphate to the magnesium chromate is 100:50:6:1:1.
(5) 56 parts of metakaolin base polymer in the step (3), 20 parts of composite phosphate adhesive in the step (4), 35 parts of pure acrylic emulsion, 25 parts of titanium white and 70 parts of water are mixed according to parts by weight, and stirred for 1h to prepare the coating.
Taking the coatings of examples 1-3 and comparative examples 1-3, and referring to GB 9779-2015 multi-layer building coating to test the adhesive strength and crack resistance of the coating; GB 14007-2018 steel structure fireproof paint tests fireproof limit.
TABLE 1 coating adhesion Strength, crack resistance and fire resistance Limit of the coatings of examples 1-3 and comparative examples 1-3
As is clear from Table 1, the adhesive strengths of examples 1 to 3 were all 1MPa or more, the adhesive strengths of comparative examples 1 to 2 were higher than that of comparative example 3, and the adhesive strengths of examples 1 to 3 were improved and the adhesive properties were good as compared with comparative examples 1 to 3; the coatings of experimental examples 1-3 are crack-free and have good crack resistance compared with comparative examples 1-3; the fire resistance limit of the experimental examples 1-3 is above 2.5h, the fire resistance limit of the comparative examples 1-2 is about 1h, the fire resistance limit of the comparative example 3 is 2h, and compared with the comparative examples 1-3, the fire resistance limit is improved and the fire resistance performance is good. Experimental results show that the interior wall fireproof coating based on the metakaolin base polymer has good adhesive property, strong crack resistance and fire resistance.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The interior wall fireproof coating based on the metakaolin base polymer is characterized by comprising the following raw materials in parts by weight: 50-60 parts of metakaolin base polymer, 30-40 parts of pure acrylic emulsion, 18-25 parts of composite phosphate adhesive, 20-28 parts of titanium dioxide and 65-75 parts of water.
2. The interior wall fire retardant coating based on metakaolin base polymer according to claim 1, wherein the interior wall fire retardant coating comprises the following raw materials in parts by weight: 56 parts of metakaolin base polymer, 35 parts of pure acrylic emulsion, 20 parts of composite phosphate adhesive, 25 parts of titanium dioxide and 70 parts of water.
3. An interior wall fire retardant coating based on metakaolin based polymer according to claim 1, wherein the preparation of metakaolin based polymer comprises the steps of:
(1) Adding potassium hydroxide into the potash water glass solution to prepare an alkali excitant; the mass ratio of the potassium hydroxide to the potash water glass solution is 1:9-11; the modulus of the alkali-activated agent is 1-1.5, and the concentration is 35-40%;
(2) Adding the silica fume into a reactor, heating in water bath, and adding titanate coupling agent diluent while stirring to obtain modified silica fume; the mass ratio of the silica fume to the titanate coupling agent diluent is 1:0.01 to 0.03;
(3) Mixing the modified silica fume in the step (2) with epoxy resin, grinding, adding metakaolin and the alkali-activated agent in the step (1), and stirring to obtain the metakaolin base polymer.
4. The metakaolin-based polymer-based interior wall fire retardant coating according to claim 1, wherein the preparation of the composite phosphate binder comprises the steps of: and adding phosphoric acid into the purified water, heating to 100-110 ℃, adding aluminum hydroxide, aluminum tripolyphosphate, magnesium dihydrogen phosphate and magnesium chromate, and stirring for 45-50 min to obtain the composite phosphate adhesive.
5. The metakaolin-based polymer-based interior wall fireproof coating according to claim 3, wherein in the step (2), the titanate coupling agent diluent is prepared by mixing a titanate coupling agent and a diluent according to a mass ratio of 1:0.8-1.2; the diluent is anhydrous dimethylbenzene and/or butyl acetate.
6. The interior wall fireproof coating based on metakaolin base polymer as claimed in claim 3, wherein in the step (3), the mass ratio of metakaolin, epoxy resin, modified silica fume and alkali activator is 9-10:1-3:8-10: 7-8.
7. The metakaolin-based polymer-based wall fireproof paint according to claim 4, wherein the mass ratio of phosphoric acid to aluminum hydroxide to aluminum tripolyphosphate to magnesium dihydrogen phosphate to magnesium chromate is 96-102:18-20:5-6:1-2:3-5.
8. The metakaolin-based polymer-based interior wall fireproof coating according to claim 3, wherein in the step (2), the water bath heating temperature is 55-65 ℃ and the heating time is 15-20 min.
9. A process for the preparation of an interior wall fire retardant coating based on metakaolin based polymers according to any one of claims 1-8, comprising the steps of: and mixing the metakaolin base polymer, the composite phosphate adhesive, the pure acrylic emulsion, the titanium pigment and the water, and stirring to obtain the coating.
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