CN116836606A - Indoor decorative paint and preparation method thereof - Google Patents
Indoor decorative paint and preparation method thereof Download PDFInfo
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- CN116836606A CN116836606A CN202310547604.7A CN202310547604A CN116836606A CN 116836606 A CN116836606 A CN 116836606A CN 202310547604 A CN202310547604 A CN 202310547604A CN 116836606 A CN116836606 A CN 116836606A
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- styrene
- acrylic emulsion
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- mixing
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- 239000003973 paint Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000000839 emulsion Substances 0.000 claims abstract description 145
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 102
- 239000011258 core-shell material Substances 0.000 claims abstract description 49
- 229910003023 Mg-Al Inorganic materials 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 70
- 238000003756 stirring Methods 0.000 claims description 57
- 238000002156 mixing Methods 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 39
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 35
- 238000000576 coating method Methods 0.000 claims description 34
- 239000011248 coating agent Substances 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 23
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 22
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 20
- 239000000084 colloidal system Substances 0.000 claims description 20
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 claims description 20
- 239000012266 salt solution Substances 0.000 claims description 20
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 18
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 15
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 15
- 229940068918 polyethylene glycol 400 Drugs 0.000 claims description 13
- -1 dodecanol ester Chemical class 0.000 claims description 12
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 11
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 11
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 11
- GLISOBUNKGBQCL-UHFFFAOYSA-N 3-[ethoxy(dimethyl)silyl]propan-1-amine Chemical compound CCO[Si](C)(C)CCCN GLISOBUNKGBQCL-UHFFFAOYSA-N 0.000 claims description 10
- XNDZQQSKSQTQQD-UHFFFAOYSA-N 3-methylcyclohex-2-en-1-ol Chemical compound CC1=CC(O)CCC1 XNDZQQSKSQTQQD-UHFFFAOYSA-N 0.000 claims description 10
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 claims description 10
- 229920000193 polymethacrylate Polymers 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 9
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000032683 aging Effects 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 1
- 239000002518 antifoaming agent Substances 0.000 claims 1
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract description 22
- 150000004692 metal hydroxides Chemical class 0.000 abstract description 22
- 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 abstract description 13
- 239000003063 flame retardant Substances 0.000 abstract description 13
- 238000009413 insulation Methods 0.000 abstract description 12
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 239000011159 matrix material Substances 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000945 filler Substances 0.000 abstract description 9
- 239000012796 inorganic flame retardant Substances 0.000 abstract description 8
- 239000006087 Silane Coupling Agent Substances 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 229920000058 polyacrylate Polymers 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 36
- 239000010410 layer Substances 0.000 description 22
- 239000000779 smoke Substances 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 9
- 239000013530 defoamer Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 239000005909 Kieselgur Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 4
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001701 hydrotalcite Inorganic materials 0.000 description 4
- 229960001545 hydrotalcite Drugs 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZPZDIFSPRVHGIF-UHFFFAOYSA-N 3-aminopropylsilicon Chemical compound NCCC[Si] ZPZDIFSPRVHGIF-UHFFFAOYSA-N 0.000 description 2
- FEIQOMCWGDNMHM-UHFFFAOYSA-N 5-phenylpenta-2,4-dienoic acid Chemical compound OC(=O)C=CC=CC1=CC=CC=C1 FEIQOMCWGDNMHM-UHFFFAOYSA-N 0.000 description 2
- 241000238367 Mya arenaria Species 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical group [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012757 flame retardant agent Substances 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical group [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Classifications
-
- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the field of paint, in particular to an indoor decorative paint and a preparation method thereof. Firstly, the invention synthesizes the core-shell styrene-acrylic emulsion by taking the styrene-acrylic polymer as the core and the acrylic polymer as the shell, and further, the invention loads Mg-Al layered double metal hydroxide on the shell, and uses the silane coupling agent for modification, and the diatomite is matched with the styrene-acrylic emulsion to promote the core-shell styrene-acrylic emulsion matrix to form carbon, form a molten carbon layer, strengthen the strength of the carbon layer and achieve the aim of flame retardance. The indoor decorative paint prepared by the invention has the advantages that the flame retardant property of the paint is greatly improved while the excellent sound insulation property is maintained, and meanwhile, the problem that the inorganic flame retardant filler influences the sound insulation property of the paint is solved.
Description
Technical Field
The invention relates to the field of paint, in particular to an indoor decorative paint and a preparation method thereof.
Background
With the development of industrialization in the current society, the application of large-sized machines is gradually wide, and along with the development of the large-sized machines, the noise generated by the operation of the machines and the vibration of parts is more and more serious, and the noise not only endangers the environment, but also is a great harm to the bodies of staff, so that damping paint with anti-vibration and noise reduction performances is developed. The damping paint has the advantages of simple and convenient use, excellent damping effect and the like, and is widely applied to vehicle parts. When the damping paint is used on the surface of an engine, vibration generated by the engine can be restrained, so that the purpose of reducing noise is achieved. When being used for the car surface panel beating, can reduce the noise that produces because the vehicle panel beating rubs with the air when the vehicle high-speed is gone, improve driver and the comfort level of taking personnel.
The damping paint is an environment-friendly polymer-based damping paint with vibration and noise reduction effects, and mainly comprises emulsion, functional filler, flame retardant and auxiliary agent, wherein the emulsion is taken as a matrix, the emulsion can be selected according to functional requirements, such as styrene-acrylic emulsion, water-acrylic emulsion, silicone-acrylic emulsion, styrene-butadiene emulsion and the like, and the water-based emulsion is widely used as a paint matrix relative to the oily emulsion because of the advantages of environment protection, low VOC and the like. Damping coatings have a number of advantages: the damping material can be better applied to the surface with complex structure, solves the problem of difficult construction of the damping material in the complex structure, and has good corrosion resistance, safety and environmental protection.
The damping paint prepared by mixing high polymer materials has the characteristics of excellent vibration reduction, noise reduction and the like. The damping paint is coated on the surface of the metal structure to reduce vibration and noise, and the working principle is that the damping paint absorbs vibration mechanical energy and converts the vibration mechanical energy into heat energy to be dissipated. With the increase of mechanical running speeds of airplanes, rail trains and the like, the vibration is more serious, and the heat energy absorbed and converted by the damping paint is greatly increased. However, many high molecular polymers are inflammable, have poor fireproof performance, generate a great amount of smoke when burned, and have flame propagation, thereby bringing potential safety hazards to lives and properties of people. Therefore, the research and development of the novel flame-retardant damping coating has important significance and good application prospect.
CN 101891990B discloses a water-based sound-insulating damping paint and a preparation method thereof, wherein the water-based sound-insulating damping paint comprises the following raw materials in parts by weight: 15-35 parts of polymer emulsion; 35-55 parts of inorganic filler; 10-20 parts of powder flame retardant; 2-5 parts of auxiliary agent; 10-20 parts of deionized water. The inorganic flame retardant powder is directly added into the damping paint, and the problems of incompatibility, poor dispersibility and the like of the inorganic flame retardant and the organic high molecular polymer are solved, so that the damping performance of the paint is reduced to a certain extent when the inorganic flame retardant powder is added into the damping paint.
Disclosure of Invention
In order to solve the technical problems, the invention discloses an indoor decorative coating and a preparation method thereof.
The indoor decorative paint comprises the following raw materials in parts by mass:
80-85 parts of modified core-shell styrene-acrylic emulsion, 5-10 parts of diatomite, 2-4 parts of wetting agent PE-100, 0.1-0.5 part of flatting agent, 0.1-0.5 part of defoamer NXZ and 5-6 parts of dodecanol ester.
The leveling agent is at least one of carboxymethyl cellulose and hydroxyethyl cellulose; preferably, the leveling agent is hydroxyethyl cellulose.
The preparation method of the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.3-0.6 part of sodium bicarbonate, 1.5-2 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 0.5-1.5 parts of methacrylic acid, 13-15 parts of butyl acrylate, 11-12 parts of styrene, 1-2 parts of methyl methacrylate and 19-21 parts of water according to parts by mass, and stirring for 20-40min at 300-400r/min to obtain a pre-emulsion; mixing 0.2-0.3 part of ammonium persulfate and 6-7 parts of water, and stirring at 300-400r/min for 10-20min to obtain ammonium persulfate solution; mixing 0.6-1 part of sodium polymethacrylate and 5-10 parts of water, and stirring for 10-20min at 300-400r/min to obtain a protective colloid solution; mixing 10-15 parts of pre-emulsion, 5-10 parts of protective colloid solution and 2-4 parts of ammonium persulfate solution, and stirring at 300-400r/min for 120-180min at 70-80 ℃ in nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 18-20 parts of butyl acrylate, 15-16 parts of isooctyl acrylate and 0.01-0.05 part of ammonium persulfate according to the weight parts, and stirring for 20-40min at 300-400r/min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the rate of 0.4-0.8mL/min at the temperature of 70-80 ℃ in a nitrogen atmosphere, and continuing to react for 120-180min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1-2 parts by mass of magnesium nitrate hexahydrate, 1-2 parts by mass of aluminum nitrate nonahydrate, 1-2 parts by mass of a regulating agent and 10-20 parts by mass of water, and stirring for 1-2 hours at 300-400r/min to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.1-0.2mol/L at the rate of 0.4-0.8mL/min, adjusting the pH value to 9-10, and aging for 10-20 hours at room temperature to obtain the Mg-Al layered double hydroxide loaded styrene-acrylic emulsion;
and (2) adding 1-2 parts by mass of (3-aminopropyl) dimethyl ethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step (N3), stirring at 300-400r/min in a nitrogen atmosphere, and carrying out ultrasonic treatment for 12-24 hours to obtain the modified core-shell styrene-acrylic emulsion.
The power of the ultrasonic wave in the step N4 is 50-70W, and the frequency is 70-90kHz.
The regulator is at least one of sodium dodecyl benzene sulfonate and polyethylene glycol 400; preferably, the regulator is prepared from sodium dodecyl benzene sulfonate and polyethylene glycol 400 according to the mass ratio of (1-2): (1-2) and mixing.
The invention also discloses a preparation method of the indoor decorative paint.
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 80-85 parts of modified core-shell styrene-acrylic emulsion, 5-10 parts of diatomite, 2-4 parts of wetting agent PE-100, 0.1-0.5 part of flatting agent, 0.1-0.5 part of defoamer NXZ and 5-6 parts of dodecanol ester are mixed, and stirred for 10-30min at the rotating speed of 300-400r/min, so that the indoor decorative coating is obtained.
Most of the coatings with damping function contain a large amount of organic high molecular polymers, which also causes that the damping coatings are easy to burn, the smoke density is high during burning, and once fire disasters occur, potential safety hazards are brought to lives and properties of people. Improving the burnable properties of damping coatings by adding flame retardants is a very effective way. However, the damping paint is effective in sound insulation because the transmission of sound waves is slowed down by the vibration of the organic high molecular polymer. Therefore, the inorganic flame retardant material has the problems of larger particle size, incompatibility, poor dispersibility and the like of the organic high molecular polymer, and the like, and the inorganic flame retardant material is added into the damping coating, so that the damping performance of the coating is reduced to a certain extent. Therefore, how to realize the improvement of the flame retardant property of the coating without affecting or even improving the damping property of the coating is a challenging research direction.
According to the invention, firstly, the acrylic acid monomer and the styrene are used as raw materials to synthesize the styrene-acrylic emulsion, and compared with pure acrylic acid, the styrene-acrylic emulsion has more excellent high temperature resistance and is easy to carbonize under the high temperature condition to form a compact carbon layer, so that the generation of smoke is reduced. However, the styrene-acrylic polymer has high molecular chain hardness and weak consumption ability for vibration waves. Therefore, the invention adopts butyl acrylate and isooctyl acrylate to polymerize, forms a layer of soft shell with more branched chains on the surface of the styrene-acrylic acid polymer, and finally obtains the organic high polymer emulsion which has better damping performance, is high temperature resistant, can form a compact carbon layer and reduces the generation of smoke.
The flame retardant performance of the core-shell styrene-acrylic emulsion-based coating is improved compared with that of the pure acrylic emulsion-based coating, but the flame retardant performance is still not ideal based on the properties of the organic high molecular polymer. Therefore, the invention further adopts magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to prepare metal salt solution, the metal salt solution is added into the prepared core-shell type styrene-acrylic emulsion, metal ions are fully adsorbed on the shell of the styrene-acrylic emulsion, the metal ions are regulated and controlled by a regulator, and then the pH is regulated and controlled by dropwise adding alkali liquor to form the Mg-Al layered double metal hydroxide. The Mg-Al layered double hydroxide obtained in this way has good dispersibility in styrene-acrylic emulsion. In addition, the sodium dodecyl benzene sulfonate and the polyethylene glycol 400 serving as the regulating agent can promote the generation of Mg-Al layered double metal hydroxide on the styrene-acrylic emulsion shell, and experiments prove that the sodium dodecyl benzene sulfonate and the polyethylene glycol 400 can also promote the carbonization of the styrene-acrylic emulsion, thereby playing the roles of flame retardance and reducing the generation of smoke. In addition, the Mg-Al layered double metal hydroxide is a layered inorganic nano filler, and in the heating process, free water between layers is heated and decomposed firstly, and takes away part of heat, then the layered double metal hydroxide is heated, and the combined water between hydrotalcite laminates is removed, so that part of heat is taken away. In the subsequent combustion process, due to dehydration, interlayer bond energy is reduced, the laminated plate collapses, the lamellar structure is dissociated in the middle of the fireproof paint, at the moment, sodium dodecyl benzene sulfonate and polyethylene glycol 400 playing a role in regulation and control promote the matrix to form a molten carbonaceous layer, and the collapsed hydrotalcite lamellar structure is dissociated in the carbonaceous layer to strengthen the strength of the carbonaceous layer, thereby playing a role in isolating fire and heat, protecting the matrix, enabling the matrix not to be decomposed continuously and achieving the aim of flame retardance. In addition, the acting force between the Mg-Al layered double hydroxide layers is weak, and when vibration is transmitted, the Mg-Al layered double hydroxide can consume energy through plane sliding, so that the transmission of sound waves is weakened. Thus, the flame retardant property of the coating is greatly enhanced, and the damping property of the coating is also improved to a certain extent.
Still further, the invention treats the Mg-Al layered double metal hydroxide on the surface of the core-shell type styrene-acrylic emulsion by (3-aminopropyl) dimethylethoxysilane, grafts the aminopropyl silane on the surface of the Mg-Al layered double metal hydroxide by methoxyl hydrolysis, plays a role of connecting the core-shell type styrene-acrylic emulsion and the Mg-Al layered double metal hydroxide, and reduces the polymerization of the Mg-Al layered double metal hydroxide.
In order to adjust the consistency of the damping coating and further improve its flame resistance, the invention adds diatomaceous earth as a filler. Diatomite is siliceous rock and has chemical components of SiO 2 Mainly, siO can be used 2 ·nH 2 O represents that the alkalinity of the paint can be neutralized, and a silicon dioxide colloid is formed, and the structure is fine, loose, light and porous, and has certain sound insulation performance. The carbon-carbon composite material is used as a filler of a coating, and can be combined with a carbonaceous layer along with the combustion process to form a stable silicon-carbon structure, so that the ignition point of the carbon-carbon composite material is further improved, and the generation of smoke is reduced.
The invention has the beneficial effects that: the core-shell styrene-acrylic emulsion is synthesized by taking the styrene-acrylic polymer as the core and the acrylic polymer as the shell, has more excellent high temperature resistance, and is easy to carbonize under the high temperature condition to form a compact carbon layer, thereby reducing the generation of smoke. Further, the Mg-Al layered double hydroxide is loaded on the shell and modified by the silane coupling agent, and the diatomite is matched with the silane coupling agent, so that the core-shell styrene-acrylic emulsion matrix can be promoted to form carbon, a molten carbonaceous layer is formed, the strength of the carbon layer is enhanced, and the purpose of flame retardance is achieved. The indoor decorative paint prepared by the invention has the advantages that the flame retardant property of the paint is greatly improved while the excellent sound insulation property is maintained, and meanwhile, the problem that the inorganic flame retardant filler influences the sound insulation property of the paint is solved.
Detailed Description
Diatomaceous earth, particle size: 325 mesh, lingshu county abundant mineral products processing factory.
Dodecanol ester, CAS number: 25265-77-4.
Hydroxyethyl cellulose, viscosity 70mpa.s, south Beijing bermuda biotechnology limited.
Alkylphenol ether sulfosuccinate sodium sulfonate, cat: kns2022070495, yikang chemical (Hubei) Co., ltd.
(3-aminopropyl) dimethylethoxysilane, CAS number: 18306-79-1.
Sodium polymethacrylate, cat No.: WD3013, hubei Wanzhen chemical Co., ltd.
Example 1
The preparation method of the indoor decorative paint comprises the following steps:
according to the parts by mass, 85 parts of styrene-acrylic emulsion, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative coating is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the styrene-acrylic emulsion comprises the following steps: mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution are mixed, and the mixture is placed at 75 ℃ and in a nitrogen atmosphere and stirred for 160min at 400r/min, so that the styrene-acrylic emulsion is obtained.
Example 2
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of core-shell styrene-acrylic emulsion, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative coating is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; and (2) dropwise adding the acrylic emulsion into the styrene-acrylic emulsion obtained in the step (N1) at the speed of 0.6mL/min at the temperature of 75 ℃ in a nitrogen atmosphere, and continuing to react for 160min after the dropwise adding is finished to obtain the core-shell styrene-acrylic emulsion.
Example 3
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of styrene-acrylic emulsion loaded by Mg-Al layered double hydroxide, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative paint is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the Mg-Al layered double hydroxide supported styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the speed of 0.6mL/min in a nitrogen atmosphere at the temperature of 75 ℃, and continuing to react for 160min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1.5 parts by mass of magnesium nitrate hexahydrate, 1.5 parts by mass of aluminum nitrate nonahydrate, 1 part by mass of regulator and 15 parts by mass of water, and stirring at 400r/min for 1.5 hours to obtain a metal salt solution; and then adding the metal salt solution into the core-shell styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.2mol/L at the rate of 0.06mL/min, adjusting the pH value to 10, and aging for 12 hours at room temperature to obtain the Mg-Al layered double hydroxide supported styrene-acrylic emulsion.
The regulator is prepared by mixing sodium dodecyl benzene sulfonate and polyethylene glycol 400 according to a mass ratio of 1:1.
Example 4
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of modified core-shell styrene-acrylic emulsion, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative coating is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the speed of 0.6mL/min in a nitrogen atmosphere at the temperature of 75 ℃, and continuing to react for 160min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1.5 parts by mass of magnesium nitrate hexahydrate, 1.5 parts by mass of aluminum nitrate nonahydrate, 1 part by mass of regulator and 15 parts by mass of water, and stirring at 400r/min for 1.5 hours to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.2mol/L at the rate of 0.06mL/min, adjusting the pH value to 10, and aging for 12 hours at room temperature to obtain the Mg-Al layered double metal hydroxide loaded styrene-acrylic emulsion;
and (2) adding 1.5 parts by mass of (3-aminopropyl) dimethylethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step (N3), stirring at 400r/min in a nitrogen atmosphere, and performing ultrasonic treatment for 12 hours to obtain the modified core-shell styrene-acrylic emulsion.
The power of the ultrasonic wave in the step N4 is 60W, and the frequency is 80kHz.
The regulator is prepared by mixing sodium dodecyl benzene sulfonate and polyethylene glycol 400 according to a mass ratio of 1:1.
Example 5
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of modified core-shell styrene-acrylic emulsion, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative coating is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the speed of 0.6mL/min in a nitrogen atmosphere at the temperature of 75 ℃, and continuing to react for 160min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1.5 parts by mass of magnesium nitrate hexahydrate, 1.5 parts by mass of aluminum nitrate nonahydrate, 1 part by mass of regulator and 15 parts by mass of water, and stirring at 400r/min for 1.5 hours to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.2mol/L at the rate of 0.06mL/min, adjusting the pH value to 10, and aging for 12 hours at room temperature to obtain the Mg-Al layered double metal hydroxide loaded styrene-acrylic emulsion;
and (2) adding 1.5 parts by mass of (3-aminopropyl) dimethylethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step (N3), stirring at 400r/min in a nitrogen atmosphere, and performing ultrasonic treatment for 12 hours to obtain the modified core-shell styrene-acrylic emulsion.
The power of the ultrasonic wave in the step N4 is 60W, and the frequency is 80kHz.
The regulator is sodium dodecyl benzene sulfonate.
Example 6
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of modified core-shell styrene-acrylic emulsion, 10 parts of diatomite, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative coating is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the speed of 0.6mL/min in a nitrogen atmosphere at the temperature of 75 ℃, and continuing to react for 160min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1.5 parts by mass of magnesium nitrate hexahydrate, 1.5 parts by mass of aluminum nitrate nonahydrate, 1 part by mass of regulator and 15 parts by mass of water, and stirring at 400r/min for 1.5 hours to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.2mol/L at the rate of 0.06mL/min, adjusting the pH value to 10, and aging for 12 hours at room temperature to obtain the Mg-Al layered double metal hydroxide loaded styrene-acrylic emulsion;
and (2) adding 1.5 parts by mass of (3-aminopropyl) dimethylethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step (N3), stirring at 400r/min in a nitrogen atmosphere, and performing ultrasonic treatment for 12 hours to obtain the modified core-shell styrene-acrylic emulsion.
The power of the ultrasonic wave in the step N4 is 60W, and the frequency is 80kHz.
The regulator is polyethylene glycol 400.
Example 7
The preparation method of the indoor decorative paint comprises the following steps:
according to the mass parts, 85 parts of modified core-shell styrene-acrylic emulsion, 3 parts of wetting agent PE-100, 0.4 part of flatting agent, 0.3 part of defoamer NXZ and 5 parts of dodecanol ester are mixed, and the mixture is stirred for 20 minutes at a rotating speed of 400r/min, so that the indoor decorative paint is obtained.
The leveling agent is hydroxyethyl cellulose.
The preparation method of the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing 0.5 part of sodium bicarbonate, 1.8 parts of alkylphenol ether sulfosuccinate sodium sulfonate, 1 part of methacrylic acid, 14 parts of butyl acrylate, 11.6 parts of styrene, 1.4 parts of methyl methacrylate and 20 parts of water according to parts by mass, and stirring at 400r/min for 30min to obtain a pre-emulsion; mixing 0.2 part of ammonium persulfate and 6.5 parts of water, and stirring at 400r/min for 15min to obtain an ammonium persulfate solution; mixing 0.8 part of sodium polymethacrylate and 8 parts of water, and stirring at 400r/min for 15min to obtain a protective colloid solution; mixing 14 parts of pre-emulsion, 7 parts of protective colloid solution and 3 parts of ammonium persulfate solution, and stirring at 400r/min for 160min at 75 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
mixing 19 parts of butyl acrylate, 15.6 parts of isooctyl acrylate and 0.03 part of ammonium persulfate according to parts by weight, and stirring at 400r/min for 30min to obtain an acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at the speed of 0.6mL/min in a nitrogen atmosphere at the temperature of 75 ℃, and continuing to react for 160min after the dropwise adding is completed to obtain core-shell styrene-acrylic emulsion;
mixing 1.5 parts by mass of magnesium nitrate hexahydrate, 1.5 parts by mass of aluminum nitrate nonahydrate, 1 part by mass of regulator and 15 parts by mass of water, and stirring at 400r/min for 1.5 hours to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, dropwise adding a sodium hydroxide aqueous solution with the concentration of 0.2mol/L at the rate of 0.06mL/min, adjusting the pH value to 10, and aging for 12 hours at room temperature to obtain the Mg-Al layered double metal hydroxide loaded styrene-acrylic emulsion;
and (2) adding 1.5 parts by mass of (3-aminopropyl) dimethylethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step (N3), stirring at 400r/min in a nitrogen atmosphere, and performing ultrasonic treatment for 12 hours to obtain the modified core-shell styrene-acrylic emulsion.
The power of the ultrasonic wave in the step N4 is 60W, and the frequency is 80kHz.
The regulator is formed by mixing sodium dodecyl benzene sulfonate and polyethylene glycol 400 according to the mass ratio of 1:1.
Test example 1
The interior decorative paint prepared in each example was poured into a form, naturally dried at room temperature for 48 hours, and then dried in an oven at 60℃for 24 hours to prepare a 20 mm. Times.6.50 mm. Times.1.50 mm bar.
Damping performance the coating prepared in the detection example using DMTA Q800 dynamic mechanical property meter is set in the detection process: and selecting a stretching mode for carrying out, wherein the strain is conditioned to be 1% of strain, the test frequency is 1Hz, the temperature interval is-100-60 ℃ during the test, and the temperature raising speed is 3 ℃ per minute.
Table 1: DMA test data
The damping performance of the material is generally represented by a loss factor (Tan delta), and the larger the Tan delta value is, the better the damping performance of the material is indicated, and the stronger the corresponding capability of the material for absorbing and consuming sound vibration energy is; the material with Tandelta more than or equal to 0.3 is an effective damping material.
As shown in Table 1, it can be seen from Table 1 that the interior decorative coatings prepared in examples 1 to 7 of the present invention have a wide temperature range and exhibit good sound insulation effect in the room temperature range. Wherein, the maximum loss factor and the temperature range of the indoor decorative paint prepared in the example 1 are obviously smaller than those of the indoor decorative paint prepared in the example 2. This is because the styrene-acrylic polymer used in example 1 has a high molecular chain hardness and a weak consumption ability for vibration waves. In the embodiment 2, butyl acrylate and isooctyl acrylate are polymerized to form a layer of soft shell with more branched chains on the surface of the styrene-acrylic acid polymer, so that the capability of consuming vibration waves is obviously improved. Example 3A layer of Mg-Al layered double hydroxide is generated on the surface of the prepared core-shell styrene-acrylic emulsion, so that the coating has excellent flame retardance and further improves the damping performance. The invention supposedly adopts magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to prepare metal salt solution, and the metal salt solution is added into the prepared core-shell type styrene-acrylic emulsion to enable metal ions to be fully adsorbed on the shell of the styrene-acrylic emulsion, the metal ions are regulated and controlled by a regulator, and then the pH is regulated and controlled by dropwise adding alkali solution to form the Mg-Al layered double metal hydroxide. The Mg-Al layered double hydroxide obtained in this way has good dispersibility in styrene-acrylic emulsion. In addition, the acting force between the Mg-Al layered double hydroxide layers is weak, and when vibration is transmitted, the Mg-Al layered double hydroxide can consume energy through plane sliding, so that the transmission of sound waves is weakened. Furthermore, sodium dodecyl benzene sulfonate used as a regulator may displace nitrate ions between mg—al layered double hydroxide layers to some extent, so that interlayer spacing thereof is enlarged, sliding occurs more easily, and thus acoustic waves are converted into mechanical energy. Example 5 the damping properties of sodium dodecylbenzenesulfonate alone, as a modulator, are very similar to those of example 4, to a certain extent corroborating the above. Example 7 was carried out without adding diatomaceous earth to the interior paint, and the maximum loss factor was increased, but the temperature range was narrowed. This demonstrates that diatomaceous earth itself has sound-insulating properties that can block the propagation of sound waves to some extent, which is advantageous for widening the temperature range of the paint, but itself is not easily converted into mechanical energy, which also blocks the paint's ability to consume sound waves to some extent. In conclusion, the flame retardant modification of the damping paint disclosed by the invention has no influence on the sound insulation performance, and the sound insulation performance of the paint is improved to a certain extent.
Test example 2
The smoke density level was determined with reference to GB/T8627-2007 method for smoke density test for combustion or decomposition of building materials.
Test instrument: NANJING Jiang Ning analytical instrument factory JCY-2 type building material smoke density NBS box.
Sample preparation: the paint prepared in each example was poured into a form, naturally dried at room temperature for 48 hours, and then dried in an oven at 60℃for 24 hours to prepare a spline having a size of 2.5 cm. Times.2.5 cm. Times.0.6 cm.
Test conditions: the gas flow rate is 0.1MPa, the test temperature is room temperature, and the test time is 4min.
The limiting oxygen index was determined by reference to the room temperature experimental section in GB/T2406.1-2008 section 1 for determination of Combustion behavior by oxygen index method for plastics.
The model is that a critical oxygen index determinator of Tex detection instrument science and technology Co is adopted: TTech-GBT2406-1, sample size is: 12 cm. Times.1 cm. Times.0.4 cm.
Table 2: flame retardant capability test
| Sample of | Limiting oxygen resistance (LOI)/% | Smoke Density Rating (SDR)/% |
| Example 1 | 32.5 | 37.92 |
| Example 2 | 32.1 | 38.77 |
| Example 3 | 35.3 | 24.31 |
| Example 4 | 36.4 | 21.72 |
| Example 5 | 36.1 | 22.14 |
| Example 6 | 36.2 | 22.68 |
| Example 7 | 33.4 | 27.32 |
As can be seen from Table 2, the interior decorative coating of example 4 of the present invention had the best flame retardant properties, the maximum limiting oxygen resistance and the lowest smoke density rating, indicating the least flammable and least amount of smoke released by combustion. This is probably because the invention synthesizes styrene-acrylic emulsion with acrylic acid monomer and styrene as raw materials first, and compared with pure acrylic acid, it has more excellent high temperature resistance, and is easy to carbonize under high temperature condition to form compact carbon layer, thus reducing the generation of smoke. Then, magnesium nitrate hexahydrate and aluminum nitrate nonahydrate are adopted to prepare metal salt solution, the metal salt solution is added into the prepared core-shell type styrene-acrylic emulsion, metal ions are fully adsorbed on the shell of the styrene-acrylic emulsion, the metal ions are regulated and controlled by a regulator, and then the pH value is regulated and controlled by dropwise adding alkali solution to form the Mg-Al layered double metal hydroxide. The Mg-Al layered double hydroxide obtained in this way has good dispersibility in styrene-acrylic emulsion. In addition, the sodium dodecyl benzene sulfonate and the polyethylene glycol 400 serving as the regulating agent can promote the generation of Mg-Al layered double metal hydroxide on the styrene-acrylic emulsion shell, and experiments prove that the sodium dodecyl benzene sulfonate and the polyethylene glycol 400 can also promote the carbonization of the styrene-acrylic emulsion, thereby playing the roles of flame retardance and reducing the generation of smoke. In addition, the Mg-Al layered double metal hydroxide is a layered inorganic nano filler, and in the heating process, free water between layers is heated and decomposed firstly, and takes away part of heat, then the layered double metal hydroxide is heated, and the combined water between hydrotalcite laminates is removed, so that part of heat is taken away. In the subsequent combustion process, due to dehydration, interlayer bond energy is reduced, the laminated plate collapses, the lamellar structure is dissociated in the middle of the fireproof paint, at the moment, sodium dodecyl benzene sulfonate and polyethylene glycol 400 playing a role in regulation and control promote the matrix to form a molten carbonaceous layer, and the collapsed hydrotalcite lamellar structure is dissociated in the carbonaceous layer to strengthen the strength of the carbonaceous layer, thereby playing a role in isolating fire and heat, protecting the matrix, enabling the matrix not to be decomposed continuously and achieving the aim of flame retardance. Then, the invention uses (3-aminopropyl) dimethylethoxysilane to make core-shell reactionThe Mg-Al layered double metal hydroxide on the surface of the styrene-acrylic emulsion is treated, and amino propyl silane is grafted on the surface of the Mg-Al layered double metal hydroxide through methoxy hydrolysis, so that the effect of connecting the core-shell styrene-acrylic emulsion and the Mg-Al layered double metal hydroxide is achieved, and the polymerization of the Mg-Al layered double metal hydroxide is reduced. Finally, the present invention adds diatomaceous earth thereto as a filler. Diatomite is siliceous rock and has chemical components of SiO 2 Mainly, siO can be used 2 ·nH 2 O represents that the alkalinity of the paint can be neutralized, and a silicon dioxide colloid is formed, and the structure is fine, loose, light and porous, and has certain sound insulation performance. The carbon-carbon composite material is used as a filler of a coating, and can be combined with a carbonaceous layer along with the combustion process to form a stable silicon-carbon structure, so that the ignition point of the carbon-carbon composite material is further improved, and the generation of smoke is reduced. The prepared indoor decorative paint has the advantages that the flame retardant property of the paint is greatly improved while the excellent sound insulation property is maintained, and meanwhile, the problem that the inorganic flame retardant filler influences the sound insulation property of the paint is solved.
Claims (8)
1. The preparation method of the indoor decorative paint is characterized by comprising the following steps of: and mixing and stirring the modified core-shell styrene-acrylic emulsion, diatomite, a wetting agent PE-100, a leveling agent, a defoaming agent NXZ and dodecanol ester to obtain the indoor decorative coating.
2. The method for producing an interior decorative coating according to claim 1, wherein the leveling agent is at least one of carboxymethyl cellulose and hydroxyethyl cellulose.
3. The method for preparing the indoor decorative paint according to claim 1, wherein the method for preparing the modified core-shell styrene-acrylic emulsion comprises the following steps:
mixing and stirring sodium bicarbonate, alkylphenol ether sulfosuccinate sodium sulfonate, methacrylic acid, butyl acrylate, styrene, methyl methacrylate and water to obtain a pre-emulsion; mixing and stirring ammonium persulfate and water to obtain an ammonium persulfate solution; mixing and stirring sodium polymethacrylate and water to obtain a protective colloid solution; mixing the pre-emulsion, the protective colloid solution and the ammonium persulfate solution, and stirring at 70-80 ℃ in a nitrogen atmosphere to obtain styrene-acrylic emulsion;
n2, mixing and stirring butyl acrylate, isooctyl acrylate and ammonium persulfate to obtain acrylic emulsion; dropwise adding acrylic emulsion into the styrene-acrylic emulsion obtained in the step N1 at 70-80 ℃ in a nitrogen atmosphere, and continuing to react after the dropwise adding is completed to obtain a core-shell styrene-acrylic emulsion;
mixing and stirring magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, a regulating agent and water to obtain a metal salt solution; then, adding the metal salt solution into the core-shell type styrene-acrylic emulsion prepared in the step N2, then dropwise adding a sodium hydroxide aqueous solution to adjust the pH value of the emulsion, and aging at room temperature to obtain the Mg-Al layered double hydroxide supported styrene-acrylic emulsion;
and N4, adding (3-aminopropyl) dimethyl ethoxysilane into the Mg-Al layered double hydroxide supported styrene-acrylic emulsion prepared in the step N3, stirring in a nitrogen atmosphere, and performing ultrasonic treatment to obtain the modified core-shell styrene-acrylic emulsion.
4. The method for preparing the indoor decorative paint according to claim 3, wherein the ultrasonic power in the step N4 is 50-70W, and the frequency is 70-90kHz.
5. The method for producing an interior coating according to claim 3, wherein the dropping rate of the acrylic emulsion in the step N2 is 0.4 to 0.8mL/min.
6. The method for producing an interior decorative coating according to claim 3, wherein the aqueous sodium hydroxide solution in step N3 has a concentration of 0.1 to 0.2mol/L and the pH thereof is adjusted to 9 to 10.
7. The method for preparing an interior decorative coating according to claim 3, wherein the regulator is at least one of sodium dodecyl benzene sulfonate and polyethylene glycol 400.
8. An interior decorative coating, characterized in that it is prepared by the method for preparing an interior decorative coating according to any one of claims 1 to 7.
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