CN108531083A - A kind of preparation method of silica aerogel reflective insulation exterior wall paint - Google Patents
A kind of preparation method of silica aerogel reflective insulation exterior wall paint Download PDFInfo
- Publication number
- CN108531083A CN108531083A CN201810483389.8A CN201810483389A CN108531083A CN 108531083 A CN108531083 A CN 108531083A CN 201810483389 A CN201810483389 A CN 201810483389A CN 108531083 A CN108531083 A CN 108531083A
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- silica aerogel
- acrylic emulsion
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 239000004965 Silica aerogel Substances 0.000 title claims abstract description 68
- 238000009413 insulation Methods 0.000 title claims abstract description 56
- 239000003973 paint Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 239000000839 emulsion Substances 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 35
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 25
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002562 thickening agent Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- -1 coalescents Substances 0.000 claims abstract description 8
- 239000003755 preservative agent Substances 0.000 claims abstract description 7
- 230000002335 preservative effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 239000002253 acid Substances 0.000 claims description 30
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 22
- 239000002904 solvent Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 17
- 230000032683 aging Effects 0.000 claims description 16
- 150000003839 salts Chemical class 0.000 claims description 15
- 239000004115 Sodium Silicate Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 13
- 150000002910 rare earth metals Chemical class 0.000 claims description 13
- 239000007822 coupling agent Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 239000004480 active ingredient Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000006210 lotion Substances 0.000 claims description 4
- VYZKQGGPNIFCLD-UHFFFAOYSA-N 3,3-dimethylhexane-2,2-diol Chemical compound CCCC(C)(C)C(C)(O)O VYZKQGGPNIFCLD-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 210000000481 breast Anatomy 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 2
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 40
- 239000011248 coating agent Substances 0.000 abstract description 38
- 238000000034 method Methods 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 239000004964 aerogel Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 235000019353 potassium silicate Nutrition 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 150000000703 Cerium Chemical class 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 150000002603 lanthanum Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000011806 microball Substances 0.000 description 2
- VTACLVUOTMPORB-UHFFFAOYSA-N n,n-bis(trimethylsilyl)acetamide Chemical class CC(=O)N([Si](C)(C)C)[Si](C)(C)C VTACLVUOTMPORB-UHFFFAOYSA-N 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 2
- 235000013618 yogurt Nutrition 0.000 description 2
- 150000003746 yttrium Chemical class 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 125000001891 dimethoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910000246 schorl Inorganic materials 0.000 description 1
- 230000036299 sexual function Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 description 1
- 229940094989 trimethylsilane Drugs 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/158—Purification; Drying; Dehydrating
- C01B33/1585—Dehydration into aerogels
-
- 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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- 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
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Abstract
The invention belongs to functional coating technical fields, more particularly to a kind of preparation method of silica aerogel reflective insulation exterior wall paint, including water A, rutile titanium dioxide, silica aerogel presoma, color stuffing, levelling agent, dispersant, preservative, antifoaming agent, styrene acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion, coalescents, thickener, pH adjusting agent, preparation method be by material after orderly mixing through being sanded.Compared with traditional reflective insulating moulding coating, using the reflective heat-insulation paint of formula materials and method preparation in the present invention, reflective insulation performance is very excellent and with the low and environmentally friendly advantage of production cost.
Description
The application is the Chinese invention patent (applying date that number of patent application is 201710368264.6:May 23 in 2017
Day, patent name:A kind of silica aerogel reflective insulation exterior wall paint and preparation method thereof) divisional application.
Technical field
The invention belongs to functional coating technical field more particularly to a kind of industry are anti-with the silica aerogel of building energy conservation
Penetrate thermal-insulating external-wall coating and preparation method thereof.
Background technology
In recent years, industry causes extensive concern both domestic and external with building energy conservation, and energy-saving coatings are quickly grown.Traditional builds
It builds exterior wall or industrial light component storage tank is mostly with glass microballoon, hollow glass micropearl, hollow ceramic microspheres with reflective heat-insulation paint
Active ingredient, to reach reflective insulation purpose.But due to the presence of microballon, this coating has the following defects:1, due to coating
The shielding action of middle other compositions so that the reflective insulation effect of microballon is affected;2, since bead density is relatively low, in coating
It is susceptible to viscosity during storage and increases the phenomenon that floating with microballon, product is not easy to store and construct;3, microballon belongs to hard
Material, cracky, heat-insulated rate are unstable;4, it is to avoid microballon damaged, production cannot be built with work progress fully according to traditional
It builds coating process to be produced, process efficiency is low, difficulty is big;5, the paint film of this kind of reflective heat-insulation paint is thicker, and coating surface is thick
Rough, decorative difference, and it is more of high cost than common coating;6, compact in paint film is poor, causes paint film water resistance bad, resistance to soiling is poor.
In order to overcome the defect of microballon class reflective heat-insulation paint, occurs addition airsetting rubber powder in existing reflective heat-insulation paint
The product of body.But due to the presence of aerogel powder, this coating has the following defects:1, aerogel powder is in high temperature and pressure
Lower to be made using supercritical drying process, working condition is harsh, complex process, dangerous big, and process units investment is big,
Preparation efficiency is low and it prepares raw material based on the silanol of high price, and production cost is high;2, aerogel powder has light
Feature is not easy to disperse in coating, is easily gathered in the top of coating and generates lamination, and then generates island effect, shadow
Ring the heat-proof quality of coating;3, aerogel powder is prepared at high temperature under high pressure, in the porous structure for maintaining three-dimensional space
Non-filler matter, porous structure have very strong siphon effect, easily adsorb the organic matter in coating preparation raw material and then seal
It is stifled porous, and then it is made to lose heat-proof quality.
The Chinese patent of Publication No. CN102719129A discloses a kind of aerosil Water-based thermal insulation coating
Preparation method, by the SiO after drying2Aerogel microball is added in water paint, compound heat-insulation coating is prepared, due to SiO2Gas
The drying of gel micro-ball needs to use supercritical CO2Dry, preparation process is complicated, and higher to equipment requirement, cost significantly carries
It is high;In addition, the main starting point of the patent heat-insulated, is not researched and analysed the reflecting properties of material, reflecting properties need
It improves.
The Chinese patent of Publication No. CN104497688A discloses a kind of aerogel heat-proof coating and preparation method thereof, should
For coating prepared by method under conditions of thickness of dry film is 5mm, thickness of dry film is thicker, leads to use cost height;In addition, this is specially
The sharp main starting point is not researched and analysed the reflecting properties of material, reflecting properties are to be improved heat-insulated.
Due to the above material there are the shortcomings that, reflective heat-insulation paint industry and building trade application by the very day of one's doom
System.
Invention content
The purpose of the present invention is being directed to technological deficiency existing in the prior art, in order to reduce the production cost of coating, carry
The reflection of high coating and heat-proof quality provide a kind of silica aerogel reflective insulation exterior wall paint and preparation method thereof.
The technical solution adopted in the present invention is:
A kind of silica aerogel reflective insulation exterior wall paint, including water A, batch mixing A, mixed material B, according to weight ratio meter, the water
A:Batch mixing A:Mixed material B=(1~3):(1~3):(1~3);
The batch mixing A includes rutile titanium dioxide, silica aerogel presoma, color stuffing, described according to weight ratio meter
Rutile titanium dioxide:Silica aerogel presoma:Color stuffing=(1~3):(1~3):(1~3);
The mixed material B in parts by weight, including the levelling agent of 1~12 parts by weight, the dispersant of 1~20 parts by weight, 1
The preservative of~10 parts by weight, the antifoaming agent of 1~10 parts by weight, the styrene-acrylic emulsion of 10~50 parts by weight, 5~40
The elastic emulsion of parts by weight, the organosilicon-modified acrylic emulsion of 5~40 parts by weight, coalescents, thickener, pH adjusting agent,
PH value is 7~8.5;Mixed material B is binder;
The parts by weight of the coalescents addition are styrene-acrylic emulsion, elastic emulsion, organic-silicon-modified propylene
The 0.1~12% of the sum of yogurt liquid parts by weight;
The parts by weight of the thickener addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic
The 0.5~5% of the sum of lotion parts by weight;
The parts by weight of the pH adjusting agent addition are styrene-acrylic emulsion, elastic emulsion, organic-silicon-modified propylene
The 0.5~5% of the sum of yogurt liquid parts by weight.
Preferably, the grain size D of the rutile titanium dioxide50≤500nm。
Preferably, the color stuffing is one or more of zinc oxide, barium sulfate, talcum powder, diatomite, dicalcium powder.
Preferably, the styrene-acrylic emulsion, elastic emulsion, the solid content of organosilicon-modified acrylic emulsion are equal
>=60%, viscosity >=1000cps.
Preferably, the levelling agent is polyether silicone levelling agent, and the active ingredient of defoaming agent is hydrophobic dioxy
SiClx, the coalescents be trimethylpentanediol, mono isobutyrate, one kind of alcohol ester 12, two or three.
Preferably, the dispersant is anionic dispersing agent, and the thickener is hydroxyethyl cellulose, hydroxylmethyl cellulose
The one or two of element.
Specifically, the preparation method of the silica aerogel presoma, includes the following steps:
(1) mixed solution of silicon source and solvent is prepared
The sodium metasilicate for the number 3.0~4.0 that rubs is taken to be fitted into reaction kettle, the water B that 1~3 times of sodium metasilicate quality is added is diluted,
Reaction kettle obtains sodium silicate solution with the speed stirring 30min of 80~200r/min through 200 mesh screens;
The aqueous solution of sodium metasilicate is commonly called as waterglass, it is made of the alkali metal and silica of different proportion, changes
Formula is R2O·nSiO2, R in formula2O is alkali metal oxide, and n is the ratio of silica and alkali metal oxide molal quantity,
The referred to as number that rubs of waterglass, the most commonly used is sodium silicate water glass Na2O·nSiO2;
(2) colloidal sol
It takes A sour, A acid metal salts is added in A acid and rare earth A hydrochlorates are added in a manner of spray to step after mixing
Suddenly the sodium silicate solution that (1) obtains;The material in reaction kettle is carried out soon with the speed of 1200~2000r/min while spray
Speed stirring, the pH value for controlling sodium silicate solution is 1.5~3.0, and it is 15~30 nanometers to control its average pore size, obtains colloidal sol, this
60~120min of step used time;
Preferably, the A acid is sulfuric acid, hydrochloric acid, oxalic acid or nitric acid, and 6~15mol/L is adjusted to water C;
Preferably, the A acid metal salts are A acid zirconates or A acid aluminium salts;
Preferably, the rare earth A hydrochlorates are A acid cerium salt, A acid yttrium salt or A acid lanthanum salts;
A acid metal salts and rare earth A hydrochlorates are easy the moisture absorption, and metering can be caused inaccurate, so for its addition of accurate quantitative analysis
Amount, in terms of oxide, the molar ratio of the two is 100 for A acid metal salts described in above-mentioned steps (2) and rare earth A hydrochlorates:1~6;Step
Suddenly in (2) in the oxide and sodium metasilicate of A acid metal salts silica molar ratio 2~5:100;For example, A acid metal salts are sulfuric acid
Aluminium, in terms of its oxide, i.e., with the molar ratio of silica in aluminium oxide and sodium metasilicate for 2~5:100.
(3) gel
Sodium hydroxide or ammonium hydroxide are taken, it is 10~11.5 that water D, which is added, and is diluted to pH value, is added in a manner of spray to reaction kettle
In;The material in reaction kettle is quickly stirred with the speed of 1200~2000r/min while spray, when object in reaction kettle
When the pH value of material is 4.5~5.5, spray is terminated, gel, 80~180min of this step used time are obtained;
(4) aging
3~10h of stirring is continued with the speed of 20~50r/min in reaction kettle, aging, control are carried out to the material in reaction kettle
Material in reactor temperature processed is 35~50 DEG C;The mode that standing is usually used in the prior art carries out aging, takes 3~5 days,
Gel can't be stirred, the reason is that the prior art needs to stand during generally believing aging, standing can
Convenient for the structure growth of aeroge;
(5) solvent is replaced
It carries out continuing 60~180min of stirring in reaction kettle, while being added same with aging material in step (4) reaction kettle
The displacement solvent of volume, to displace remaining moisture;The prior art worries that stirring can destroy its structure, will not generally replace
When be stirred, stewing process can be taken, cause take it is longer;Preparation method provided by the invention is stirred when solvent is replaced
60~180min is mixed, can greatly shorten period of a permutation, there is no destroyed microstructure;
Preferably, the displacement solvent is one or more of mixtures of methanol, acetone, n-hexane or heptane.
(6) surface modification
It carries out continuing stirring in reaction kettle, while continuously adding and aging material same volume in step (4) reaction kettle
Coupling agent;By stirring 60~180min, the silica aerogel presoma for being coated with displacement solvent and coupling agent is obtained;
The coupling agent that above-mentioned steps (6) surface modification is added cements out the water in aeroge micropore, coupling agent filling
In air inlet gel pore, the stability of microcellular structure can be improved, improves the evenness of pore size;In addition, by being added
After different coupling agents is surface modified, aeroge hydrophobicity, hydrophilic sexual function can be adjusted.
Preferably, coupling agent described in above-mentioned steps (6) is hexamethyldisilazane, bis- (trimethylsilyl) acetamides, first
Oxygroup trimethyl silane, dimethoxydimethylsilane, phenyl triethoxysilane, phenyltrimethoxysila,e, vinyl three
The one or more of methoxy silane, methyltriethoxysilane and methyl trimethoxy oxygroup alkane;
Preferably, the stirring described in above-mentioned steps (5) or step (6) is to be stirred in reaction kettle;
Preferably, the stirring provides for reaction kettle center and quickly forward stirs (high speed shear disk), reaction kettle center
Periphery provide baffle plate to realize.
Preferably, the water A, water B, water C, water D are deionized water.
A kind of preparation method of silica aerogel reflective insulation exterior wall paint, includes the following steps:
(1) according to rutile titanium dioxide:Silica aerogel presoma:The weight ratio of color stuffing is (1~3):(1~3):
(1~3) it counts, is uniformly mixing to obtain batch mixing A after rutile titanium dioxide, silica aerogel presoma, color stuffing are mixed, stirs
Rotating speed is 20~500r/min, and the stirring used time is 5~30min;
(2) it is (1~3) by the weight ratio of water A and batch mixing A:(1~3) it counts, is stirred evenly after water A is mixed with batch mixing A,
Speed of agitator is 50~550r/min, and the stirring used time is 10~50min;
(3) by the levelling agent of 1~12 parts by weight, the dispersant of 1~20 parts by weight, the preservative of 1~10 parts by weight, 1~
The antifoaming agent of 10 parts by weight, the styrene-acrylic emulsion of 10~50 parts by weight, the elastic emulsion of 5~40 parts by weight, 5~40
The organosilicon-modified acrylic emulsion of parts by weight, coalescents, thickener, pH adjusting agent stir evenly to obtain mixed material B after mixing, and mix
Expect that the pH value of B is 7~8.5;The parts by weight of coalescents addition are styrene-acrylic emulsion, elastic emulsion, organosilicon change
Property the sum of acrylic emulsion parts by weight 0.1~12%, the parts by weight of thickener addition be styrene-acrylic emulsion,
The 0.5~5% of the sum of elastic emulsion, organosilicon-modified acrylic emulsion parts by weight, the parts by weight that pH adjusting agent is added are
The 0.5~5% of the sum of styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion parts by weight;Stirring turns
Speed is 150~850r/min, and the stirring used time is 10~50min;
(4) according to water A in mixture obtained by step (2):Batch mixing A in mixture obtained by step (2):The weight ratio of mixed material B
For (1~3):(1~3):(1~3) it counts, is stirred evenly after mixed material B is mixed with mixture obtained by step (2), speed of agitator is
150~850r/min, stirring used time are 20~70min;
(5) mixture obtained by step (4) is applied after sand mill is sanded to get silica aerogel reflective insulation exterior wall
Material;Sand milling rotating speed is 200~3000r/min, and the sand milling used time is 5~30min.
In the step (5), a diameter of 0.8~1.5mm of zircon sand in sand mill.
This silica aerogel presoma is a kind of light porous amorphous inorganic nano material of structure-controllable, has continuous three
Reticular structure is tieed up, porosity is up to 80% or more, and average pore size is 20nm or so, and specific surface area is more than 500 ㎡/g, and density is small
In 70kg/m3, thermal coefficient is less than 0.020W/ (mK) under normal temperature and pressure, than the thermal conductivity 0.022W/ (mK) of still air
It is also low, be at present rare low cost, industrialization, low heat conductivity solid material.
The operation principle of the present invention
Silica aerogel is also known as blue smoke, with following characteristic:(1) infinite more air vent walls, phase are distributed with inside silica aerogel
When in there are infinite more thermal baffle, the reflection to light and heat may be implemented, and then radiant heat transfer is greatly lowered;In addition,
Titanium in rutile titanium dioxide is to the refractive index of light close to l and to infrared and visible light the ratio between coefficient of burying in oblivion up to 100
More than, silica aerogel is combined with titanium can obstruct infrared portions therein, be a kind of ideal reflective insulation material;
(3) since silica aerogel is bordering on the presence of infinite Donna metre hole, heat transmits can be passed along air vent wall in solids
It passs, is bordering on the heat conduction path that infinite more air vent wall constitutes infinite length, thermal coefficient is very low, can substantially reduce heat
Conduction;In addition, since the internal diameter many places of silica aerogel internal porosity are in Nano grade, air can not free flow in nano-pore
It is dynamic, it is relatively adsorbed on air vent wall, material is in similar vacuum state, effectively reduces convection current heat transfer.
Based on the characteristic of above-mentioned silica aerogel, by silica aerogel, rutile titanium dioxide and industry, building energy conservation
The raw material of reflective heat-insulation paint are combined, and can not only enhance industrial, building energy conservation reflective heat-insulation paint heat-proof quality,
Its sun luminous reflectance can also be effectively improved, its reflective insulation performance is improved.
Compared with prior art, the beneficial effects of the present invention are:
1, in the present invention using be silica aerogel presoma being to prepare at normal temperatures and pressures, without being dried step,
Its preparation process simple and stable, safe, technical process is down to 30h, the life of same production capacity from the 300h of traditional preparation methods
It is only the 1/20 of conventional method to produce plant investment, 10 times lower than traditional silicon source of prices of raw materials or more, and product cost is only tradition
The 1/10 of method, production cost significantly reduce;
2, the aeroge in the present invention uses the form of presoma, the proportion of aerogel precursor body to be more than aerogel powder
Proportion easily disperses in coating, is not likely to produce lamination, overcomes generation island effect, improves the heat-proof quality of coating;
3, contain solvent in the silicon airsetting presoma prepared using method in the present invention, solvent occupies in silicon airsetting presoma
Porous three-dimensional space, binder or other organic substances in coating preparation raw material can not invade it is porous in occupy thirdly
Solid space is tieed up, in coating drying process, the solvent contained in silicon airsetting presoma volatilizees naturally, volatilizees and finishes naturally in solvent
Porous three-dimensional structure is maintained in aeroge afterwards, hole is overcome and is blocked caused failure, therefore, thermal insulation
It can be stronger;
4, the present invention it is innovative by silica aerogel presoma and rutile titanium dioxide for reflection every in coating, instead
It penetrates in heat insulating coat forming process, nano-pore structure will not cave in, reduces or change, and silica aerogel presoma and gold
The addition of red stone-type titanium dioxide is so that the reflective insulation performance of coating greatly improves;
5, the titanium dioxide in the present invention selects rutile-type, rutile titanium dioxide most aobvious to fuel factor in full spectrum
The infrared light of work has good reflection function, and then has greatly obstructed the conduction of heat;
6, the titanium in coating is existed in the form of nanometre-grade titanic-schorl type titanium dioxide, has excellent infrared external reflection
Ability;
7, traditional reflective heat-insulation paint has the following problems:Sun luminous reflectance be less than 80%, full sunlight reflectivity compared with
It is low;The heat-insulated temperature difference is less than 10 DEG C, and heat-proof quality is poor;
Reflective heat-insulation paint in the present invention can reach good reflective insulation in the case where film thickness is smaller
Effect, after testing the coating sun luminous reflectance can reach 90%~92%, hemispherical emissivity reaches 90%~93%, heat-insulated
The temperature difference is more than 10 DEG C, and heat-proof quality is very good;
8, reflective heat-insulation paint for building provided by the present invention, the weatherability and stain resistance of formed coating are good, paint
Film is fine and close;
9, the reflective heat-insulation paint in the present invention, sun luminous reflectance and hemispherical reflectance will not be because of usage times
Increase and significantly reduces, reflective insulation consistency of performance;
10, product of the present invention is water paint, and the volatile organic solvents such as containing benezene, ethers, formaldehyde, not pollution-free, symbol
Close modern environmental protection concept;
11, in preparation process of the present invention with wet concentration deionized water, be conducive to further decrease production cost;
12, traditional reflective heat-insulation paint is using glass microballoon, ceramic microsphere as active ingredient, although having certain thermal resistance
Function, but there is no reflection function;The reflection effect of aeroge multilayer insulation baffle, there is full spectrum in the present invention
Reflex has infinite long path effects in addition, the stomata in aeroge is nanoscale, has than glass microballoon, ceramic microsphere
There is better heat insulation;
13, in the preparation method of silica aerogel presoma, the A acid metal salts and rare earth A hydrochlorates being added in gel process, energy
Enough achieve the effect that toughening and improves silica aerogel heat resistance;Aging and solvent swap step be in the state of stirring into
Row, substantially increases reaction efficiency, has compressed the process time, is suitble to industrialization;
14, compared with prior art, advantage has the following to silica aerogel forerunner preparation in the present invention:
(1) in recent years, there are some about the relevant report and patent for preparing silica aerogel under normal temperature and pressure in the prior art
Document, but be to rest on laboratory preparatory phase mostly, technical process is longer, while process implementing narrow limits, it is difficult to real
Existing large-scale industrialized production and application;The present invention provides the preparation methods under normal temperature and pressure, and it is relatively quiet to change the prior art
Technique only applies in critical process process and stirs, speeded up to the hydrolysis, polycondensation and modification of aeroge, realized in 30h
The technique of synthesis gas Gel Precursor provides a kind of method that industrial batch prepares rare earth toughening silica aerogel, is airsetting
A large amount of manufacture and use of glue provide premise;
(2) one of hinder the reason of aeroge development that be aeroge have reticular structure, but the structure in the prior art
Edge it is relatively thin, more crisp, compression strength is low, and easy compression is caved in, and causes performance unstable;Present invention addition rare earth A hydrochlorates
With A acid metal salts, the toughness of the material is improved, improves the intensity of silica aerogel;
(3) temperature in use of the silica aerogel of prior art preparation is relatively low, generally used below also relatively more steady at 500 DEG C
Fixed, 500 DEG C or more the internal structure changes that can lead to silica aerogel cause thermal coefficient to decline;The present invention is sour with rare earth A is added
Salt and A acid metal salts, improve the heat resistance of the material, improve the heat resisting temperature of silica aerogel.
In short, compared with traditional reflective insulating moulding coating, using in the present invention formula materials and the reflection for preparing of method every
Hot coating, reflective insulation performance is very excellent and production cost significantly reduces.
Specific implementation mode
With reference to embodiment, the invention will be further described:
One, Examples 1 to 8
1, a kind of formula of silica aerogel reflective insulation exterior wall paint, including water A, batch mixing A, mixed material B, according to weight ratio
Meter, water A:Batch mixing A:Mixed material B=(1~3):(1~3):(1~3);
Batch mixing A includes rutile titanium dioxide, silica aerogel presoma, color stuffing, according to weight ratio meter, rutile-type
Titanium dioxide:Silica aerogel presoma:Color stuffing=(1~3):(1~3):(1~3);
Mixed material B in parts by weight, including the levelling agent of 1~12 parts by weight, the dispersant of 1~20 parts by weight, 1~10
The preservative of parts by weight, the antifoaming agent of 1~10 parts by weight, the styrene-acrylic emulsion of 10~50 parts by weight, 5~40 weight
The elastic emulsion of part, the organosilicon-modified acrylic emulsion of 5~40 parts by weight, coalescents, thickener, pH adjusting agent, pH value
It is 7~8.5;
The parts by weight of coalescents addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic breast
The 0.1~12% of the sum of liquid parts by weight;
The parts by weight of thickener addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion
The 0.5~5% of the sum of parts by weight;
The parts by weight of pH adjusting agent addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic breast
The 0.5~5% of the sum of liquid parts by weight;The specific dosage of each component is shown in Table 1 in Examples 1 to 8.
The detailed list of usage of each component in 1 Examples 1 to 8 of table
Water A selects deionized water;
The grain size D of rutile titanium dioxide50≤ 500nm, specific detail are shown in Table 2;
The grain size detail list of rutile titanium dioxide in 2 Examples 1 to 8 of table
Color stuffing selects one or more of zinc oxide, barium sulfate, talcum powder, diatomite, dicalcium powder;Examples 1 to 8
The specific constituent of middle color stuffing and each component dosage are shown in Table 3;
The specific constituent of color stuffing and each component detailed list of usage in 3 Examples 1 to 8 of table
Levelling agent selects polyether silicone levelling agent;
Active ingredient of defoaming agent is hydrophobic silica;
Dispersant selects anionic dispersing agent;
Styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion solid content >=60%, viscosity
>=1000cps, design parameter detail is shown in Table 4 in Examples 1 to 8;
Styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion lotion are bright in 4 Examples 1 to 8 of table
Thin table
Coalescents selection trimethylpentanediol, mono isobutyrate, the one or two of alcohol ester 12 or three kinds, thickener choosing
With the one or two of hydroxyethyl cellulose, hydroxymethyl cellulose, design parameter detail is shown in Table 5 in Examples 1 to 8.
The design parameter detail list of coalescents, thickener in 5 Examples 1 to 8 of table
2, the preparation method of silica aerogel reflective insulation exterior wall paint carries out in accordance with the following steps:
(1) each component is weighed according to the dosage in above-mentioned formula;
(2) it is uniformly mixing to obtain batch mixing A after mixing rutile titanium dioxide, silica aerogel presoma, color stuffing, is stirred
Mix rotating speed is 20~500r/min, and the stirring used time is 5~30min;
(3) stirred evenly after mixing water A with batch mixing A, speed of agitator be 50~550r/min, stirring the used time be 10~
50min;
(4) levelling agent, dispersant, preservative, antifoaming agent, styrene-acrylic emulsion, elastic emulsion, organosilicon are changed
Property acrylic emulsion, coalescents, thickener mixing after stir evenly and with pH adjusting agent adjust pH value be 7~8.5 batch mixing
B;Speed of agitator is 150~850r/min, and the stirring used time is 10~50min;
(5) according to water A in mixture obtained by step (3):Batch mixing A in mixture obtained by step (3):The weight ratio of mixed material B
For (1~3):(1~3):(1~3) it counts, is stirred evenly after mixed material B is mixed with mixture obtained by step (3), speed of agitator is
150~850r/min, stirring used time are 20~70min;
(6) mixture obtained by step (5) is applied after sand mill is sanded to get silica aerogel reflective insulation exterior wall
Material;A diameter of 0.8~1.5mm of zircon sand in sand mill, sand milling rotating speed be 200~3000r/min, be sanded the used time be 5~
30min;The variable parameter of each embodiment and concrete numerical value are shown in Table 6 in the preparation method of silica aerogel reflective insulation exterior wall paint.
It is used in each step in the preparation method of silica aerogel reflective insulation exterior wall paint in 6 Examples 1 to 8 of table specific
Parameter
3, the silica aerogel presoma used in silica aerogel reflective insulation exterior wall paint, specific preparation process are as follows:
(1) mixed solution of silicon source and solvent is prepared
The waterglass for the number 3.0~4.0 that rubs is taken to be fitted into reaction kettle, the water B that 1~3 times of waterglass quality is added is diluted,
Reaction kettle obtains water glass solution with the speed stirring 30min of 80~200r/min through 200 mesh screens;
(2) colloidal sol
It takes A sour, A acid metal salts is added in A acid and rare earth A hydrochlorates are added in a manner of spray to step after mixing
Suddenly the water glass solution that (1) obtains;The material in reaction kettle is carried out soon with the speed of 1200~2000r/min while spray
Speed stirring, control ph to 1.5~3.0 stop spray, and spray time is controlled in 60~120min, obtains colloidal sol;
A acid is sulfuric acid, hydrochloric acid, oxalic acid or nitric acid, its concentration is adjusted to 6~15mol/L with water C;
A acid metal salts are A acid zirconates or A acid aluminium salts, and rare earth A hydrochlorates are A acid cerium salt, A acid yttrium salt or A acid lanthanum salts;
In terms of oxide, the molar ratio of the two is 100 for A acid metal salts and rare earth A hydrochlorates:1~6;
The molar ratio 2~5 of silica in the oxide and water glass solution of A acid metal salts:100;
(3) gel
Sodium hydroxide or ammonium hydroxide are taken, it is 10~11.5 that water D, which is added, and is diluted to pH value, is added in a manner of spray to step
(2) in reaction kettle in gained colloidal sol;The material in reaction kettle is carried out soon with the speed of 1200~2000r/min while spray
Speed stirring sprays 80~180min of used time, obtains gel when the pH value of material in reactor is 4.5~5.5;
(4) aging
3~10h of stirring is continued with the speed of 20~50r/min in reaction kettle, aging, control are carried out to the material in reaction kettle
Material in reactor temperature processed is 35~50 DEG C;
(5) solvent is replaced
The displacement solvent with aging material same volume in step (4) reaction kettle is added while stirring in reaction kettle, with
Remaining moisture is displaced, 60~180min is stirred;
Displacement solvent is one or more of mixtures of methanol, acetone, n-hexane or heptane;
(6) surface modification
It carries out continuing stirring in reaction kettle, while continuously adding and aging material same volume in step (4) reaction kettle
Coupling agent obtains the silica aerogel forerunner for being coated with displacement solvent and coupling agent after surface modification by stirring 60~180min
Body;
Stirring described in step (5) or step (6) is that heart offer is quickly forward stirred in a kettle, in reaction kettle
The periphery of the heart provides baffle plate;
Coupling agent is hexamethyldisilazane, bis- (trimethylsilyl) acetamides, methoxytrimethylsilane, dimethoxy two
Methyl-monosilane, phenyl triethoxysilane, phenyltrimethoxysila,e, vinyltrimethoxysilane, methyltriethoxy silane
One or more of mixtures of alkane and methyl trimethoxy oxygroup alkane;Water B, water C, water D are deionized water;Silica aerogel presoma
The variable parameter of each embodiment and concrete numerical value are shown in Table 7 in preparation method.
The design parameter that step (1)~(6) use in the preparation method of silica aerogel presoma in 7 Examples 1 to 8 of table
Two, performance detection
Product of the present invention is white viscous liquid, according to GB/T9755~2014《Exterior wall coating material of synthetic resin emulsion》To this
Invention product is detected, and specific testing result is shown in Table 8, table 9.
Product is according to GB/T9755~2014 in 8 Examples 1 to 8 of table《Exterior wall coating material of synthetic resin emulsion》It is detected
As a result
Inspection project | Standard requirement | Examples 1 to 8 |
Condition in container | It is in uniform state without lump, after stirring | It is in uniform state without lump, after stirring |
Application property | It is accessible to brush two | It is accessible to brush two |
Low-temperature stability | It never degenerates | It never degenerates |
Appearance of film | Normally | Normally |
Drying time (surface drying) | ≤2h | 15-30min |
Brushing resistance (2000 times) | Paint film does not damage | Paint film does not damage |
Alkali resistance (48h) | It is without exception | It is without exception |
Water resistance (96h) | It is without exception | It is without exception |
Coating temperature-change resistance (3 cycles) | It is without exception | It is without exception |
Artificial weathering ageing resistance | 250h is not blistering, does not peel off, flawless | 250h is not blistering, does not peel off, flawless |
Product is according to GB/T9755~2014 in 9 Examples 1 to 8 of table《Exterior wall coating material of synthetic resin emulsion》It is detected
As a result
By data in table 8 it is found that the drying time of the present invention only needs 15-30min, drying time is very short, rate of drying
It is very fast.
By data in table 9 it is found that existing reflective heat-insulation paint is in the case where film thickness is more than 0.3mm, sunlight is anti-
Ratio, hemispherical emissivity are penetrated 80% hereinafter, the heat-insulated temperature difference is less than 10 DEG C;Reflective heat-insulation paint in the present invention, in paint film thickness
In the case that degree is 0.2mm, which can reach 90%~92%, and hemispherical emissivity reaches 90%~
93%, the heat-insulated temperature difference is more than 10 DEG C, and reflective insulation effect is very good.
Reflective heat-insulation paint in the present invention uses silica aerogel presoma and is mixed with rutile type nano titanic oxide
Technology, coating have smaller thermal coefficient, can effectively reduce the sun and be passed to the thermal energy of building or industrial light component storage tank
Lead, in addition to traditional reflective insulating moulding coating by the reflection to sunlight, other than infrared shield, also with silica aerogel presoma
Exclusive " infinite long path " effect, " zero convection current " effect, " infinite more insulation boards " effect effectively solve solar radiation to building
The high temperature that object or industrial light component storage tank are brought.
The application method of product and the application method of traditional coating are identical in the present invention.
8 embodiments of the present invention are described in detail above, but the content is only the preferable implementation of the present invention
Example should not be construed as limiting the practical range of the present invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within the scope of the patent of the present invention.
Claims (10)
1. a kind of preparation method of silica aerogel reflective insulation exterior wall paint, which is characterized in that include the following steps:
(1)According to rutile titanium dioxide:Silica aerogel presoma:The weight ratio of color stuffing is(1~3):(1~3):(1~
3)Meter is uniformly mixing to obtain batch mixing A after mixing rutile titanium dioxide, silica aerogel presoma, color stuffing;
(2)It is by water A and the weight ratio of batch mixing A(1~3):(1~3)Meter, stirs evenly after water A is mixed with batch mixing A;
(3)By the levelling agent of 1~12 parts by weight, the dispersant of 1~20 parts by weight, the preservative of 1~10 parts by weight, 1~10 weight
Measure the antifoaming agent of part, the styrene-acrylic emulsion of 10~50 parts by weight, the elastic emulsion of 5~40 parts by weight, 5~40 weight
The organosilicon-modified acrylic emulsion of part, coalescents, thickener, pH adjusting agent stir evenly to obtain mixed material B, mixed material B after mixing
PH value be 7~8.5;The parts by weight of coalescents addition are styrene-acrylic emulsion, elastic emulsion, organic-silicon-modified
The parts by weight of the 0.1~12% of the sum of acrylic emulsion parts by weight, thickener addition are styrene-acrylic emulsion, elasticity
The parts by weight of the 0.5~5% of the sum of lotion, organosilicon-modified acrylic emulsion parts by weight, pH adjusting agent addition are benzene second
The 0.5~5% of the sum of alkene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion parts by weight;
(4)According to step(2)Water A in gained mixture:Step(2)Batch mixing A in gained mixture:The weight ratio of mixed material B is(1
~3):(1~3):(1~3)Meter, by mixed material B and step(2)It is stirred evenly after the mixing of gained mixture;
(5)By step(4)The mixture of gained is after sand mill is sanded to get silica aerogel reflective insulation exterior wall paint;
The preparation method of the silica aerogel presoma, includes the following steps:
(1)Prepare the mixed solution of silicon source and solvent
The sodium metasilicate for the number 3.0~4.0 that rubs is taken to be fitted into reaction kettle, the water B that 1~3 times of sodium metasilicate quality is added is diluted, and is reacted
Kettle obtains sodium silicate solution with the speed stirring 30min of 80~200r/min through 200 mesh screens;
(2)Colloidal sol
It takes A sour, A acid metal salts is added in A acid and rare earth A hydrochlorates are added in a manner of spray to step after mixing
(1)Obtained sodium silicate solution;The material in reaction kettle is carried out quickly with the speed of 1200~2000r/min while spray
Stirring, the pH value for controlling sodium silicate solution is 1.5~3.0, obtains colloidal sol;
(3)Gel
Sodium hydroxide or ammonium hydroxide are taken, it is 10~11.5 that water D, which is added, and is diluted to pH value, is added into reaction kettle in a manner of spray;
The material in reaction kettle is quickly stirred with the speed of 1200~2000r/min while spray, works as material in reactor
PH value be 4.5~5.5 when, terminate spray, obtain gel;
(4)Aging
3~10h of stirring is continued with the speed of 20~50r/min in reaction kettle, aging is carried out to the material in reaction kettle, control is anti-
It is 35~50 DEG C to answer material temperature in kettle;
(5)Solvent is replaced
It carries out continuing 60~180min of stirring, while addition and step in reaction kettle(4)Aging material same volume in reaction kettle
Displacement solvent, to displace remaining moisture;
(6)Surface modification
It carries out continuing stirring in reaction kettle, while continuously adding and step(4)The coupling of aging material same volume in reaction kettle
Agent;By stirring 60~180min, the silica aerogel presoma for being coated with the rare earth toughening of displacement solvent and coupling agent is obtained.
2. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, which is characterized in that packet
Water A, batch mixing A, mixed material B are included, according to weight ratio meter, the water A:Batch mixing A:Mixed material B=(1~3):(1~3):(1~3);
The batch mixing A includes rutile titanium dioxide, silica aerogel presoma, color stuffing, according to weight ratio meter, the golden red
Stone-type titanium dioxide:Silica aerogel presoma:Color stuffing=(1~3):(1~3):(1~3).
3. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, which is characterized in that institute
State mixed material B in parts by weight, including the levelling agent of 1~12 parts by weight, the dispersant of 1~20 parts by weight, 1~10 parts by weight
Preservative, the antifoaming agent of 1~10 parts by weight, the styrene-acrylic emulsion of 10~50 parts by weight, 5~40 parts by weight bullet
Property lotion, the organosilicon-modified acrylic emulsion of 5~40 parts by weight, coalescents, thickener, pH adjusting agent, pH value be 7~
8.5。
4. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, which is characterized in that institute
The parts by weight for stating the coalescents addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion
The 0.1~12% of the sum of parts by weight;
The parts by weight of the thickener addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion
The 0.5~5% of the sum of parts by weight;
The parts by weight of the pH adjusting agent addition are styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic breast
The 0.5~5% of the sum of liquid parts by weight.
5. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, it is characterised in that:Institute
State the grain size D of rutile titanium dioxide50≤500nm。
6. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, it is characterised in that:Institute
It is one or more of zinc oxide, barium sulfate, talcum powder, diatomite, dicalcium powder to state color stuffing.
7. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, it is characterised in that:Institute
State styrene-acrylic emulsion, elastic emulsion, organosilicon-modified acrylic emulsion solid content >=60%, viscosity >=
1000cps。
8. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, it is characterised in that:Institute
It is polyether silicone levelling agent to state levelling agent;The active ingredient of defoaming agent is hydrophobic silica, the coalescents
For trimethylpentanediol, mono isobutyrate, one kind of alcohol ester 12, two or three.
9. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, it is characterised in that:Institute
It is anionic dispersing agent to state dispersant, and the thickener is the one or two of hydroxyethyl cellulose, hydroxymethyl cellulose.
10. a kind of preparation method of silica aerogel reflective insulation exterior wall paint according to claim 1, which is characterized in that
The water A, water B, water C, water D are deionized water;The A acid is sulfuric acid B, hydrochloric acid B, oxalic acid B or nitric acid B, and 6 are adjusted to water B
~15mol/L.
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CN113604121A (en) * | 2021-08-24 | 2021-11-05 | 天津朗华科技发展有限公司 | Super-hydrophobic coating and preparation method and application thereof |
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