CN115418191A - Long-acting mildew-proof deacidification type sealant for buildings and preparation method thereof - Google Patents
Long-acting mildew-proof deacidification type sealant for buildings and preparation method thereof Download PDFInfo
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- CN115418191A CN115418191A CN202211142848.9A CN202211142848A CN115418191A CN 115418191 A CN115418191 A CN 115418191A CN 202211142848 A CN202211142848 A CN 202211142848A CN 115418191 A CN115418191 A CN 115418191A
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- sealant
- mildew
- proof
- long
- deacidification
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- 239000000565 sealant Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 17
- 239000011787 zinc oxide Substances 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 229920002545 silicone oil Polymers 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 13
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 229920005573 silicon-containing polymer Polymers 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000003431 cross linking reagent Substances 0.000 claims description 12
- 230000003449 preventive effect Effects 0.000 claims description 12
- TVJPBVNWVPUZBM-UHFFFAOYSA-N [diacetyloxy(methyl)silyl] acetate Chemical group CC(=O)O[Si](C)(OC(C)=O)OC(C)=O TVJPBVNWVPUZBM-UHFFFAOYSA-N 0.000 claims description 11
- -1 polydimethylsiloxane Polymers 0.000 claims description 10
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 9
- KXJLGCBCRCSXQF-UHFFFAOYSA-N [diacetyloxy(ethyl)silyl] acetate Chemical compound CC(=O)O[Si](CC)(OC(C)=O)OC(C)=O KXJLGCBCRCSXQF-UHFFFAOYSA-N 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000004480 active ingredient Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- PXMNMQRDXWABCY-UHFFFAOYSA-N 1-(4-chlorophenyl)-4,4-dimethyl-3-(1H-1,2,4-triazol-1-ylmethyl)pentan-3-ol Chemical compound C1=NC=NN1CC(O)(C(C)(C)C)CCC1=CC=C(Cl)C=C1 PXMNMQRDXWABCY-UHFFFAOYSA-N 0.000 claims description 3
- 239000005839 Tebuconazole Substances 0.000 claims description 3
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- OTARVPUIYXHRRB-UHFFFAOYSA-N diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](C)(OCC)CCCOCC1CO1 OTARVPUIYXHRRB-UHFFFAOYSA-N 0.000 claims description 2
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 2
- 229910021485 fumed silica Inorganic materials 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 230000005923 long-lasting effect Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 229940083037 simethicone Drugs 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 claims 2
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 claims 1
- 239000003112 inhibitor Substances 0.000 abstract description 8
- 238000005034 decoration Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000011049 filling Methods 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 3
- 239000004971 Cross linker Substances 0.000 abstract description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- GUUULVAMQJLDSY-UHFFFAOYSA-N 4,5-dihydro-1,2-thiazole Chemical compound C1CC=NS1 GUUULVAMQJLDSY-UHFFFAOYSA-N 0.000 description 2
- 229940123208 Biguanide Drugs 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- LISFMEBWQUVKPJ-UHFFFAOYSA-N quinolin-2-ol Chemical class C1=CC=C2NC(=O)C=CC2=C1 LISFMEBWQUVKPJ-UHFFFAOYSA-N 0.000 description 2
- 229930185107 quinolinone Natural products 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 2
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 description 1
- OQBLGYCUQGDOOR-UHFFFAOYSA-L 1,3,2$l^{2}-dioxastannolane-4,5-dione Chemical compound O=C1O[Sn]OC1=O OQBLGYCUQGDOOR-UHFFFAOYSA-L 0.000 description 1
- XNCOSPRUTUOJCJ-UHFFFAOYSA-N Biguanide Chemical compound NC(N)=NC(N)=N XNCOSPRUTUOJCJ-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- BUPPDJMCERLPJD-UHFFFAOYSA-L [dimethyl(octanoyloxy)stannyl] octanoate Chemical compound C[Sn+2]C.CCCCCCCC([O-])=O.CCCCCCCC([O-])=O BUPPDJMCERLPJD-UHFFFAOYSA-L 0.000 description 1
- XQBCVRSTVUHIGH-UHFFFAOYSA-L [dodecanoyloxy(dioctyl)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC XQBCVRSTVUHIGH-UHFFFAOYSA-L 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000004283 biguanides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004526 silane-modified polyether Substances 0.000 description 1
- 239000004590 silicone sealant Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a long-acting mildew-proof deacidification type sealant for buildings and a preparation method thereof, wherein the sealant is prepared from the following raw materials in parts by weight: 100 weight portions of alpha, omega-dihydroxy dimethyl silicone polymer, 10 to 30 weight portions of dimethyl silicone oil, 5 to 10 weight portions of cross linker, 8 to 15 weight portions of reinforcing agent, 1 to 5 weight portions of tackifier, 3 to 10 weight portions of titanium dioxide, 0.3 to 1 weight portion of mildew inhibitor, 0.5 to 2 weight portions of nano zinc oxide and 0.01 to 0.5 weight portion of catalyst. The long-acting mildew-proof deacidification sealant for the buildings provided by the invention has long-acting and broad-spectrum mildew-proof effects, has excellent characteristics of high strength, oxidation resistance and the like, and can be widely applied to the field of buildings, such as indoor decoration joint filling, glass bonding, kitchen pools, bathrooms and the like.
Description
Technical Field
The invention belongs to the technical field of sealants, relates to a sealant, and particularly relates to a long-acting mildew-proof deacidification type sealant for buildings and a preparation method thereof.
Background
Along with the improvement of development and living standard, people have higher and higher requirements on high-quality and high-quality products in the fields of buildings, decorations and the like, and the requirements of people on the functional novel sealant are gradually improved. Among them, the sealant with the mildew-proof function is one of the most demanded products.
In the field of architectural decoration, especially in the occasions of toilets, kitchens and the like, the occasions are in a damp and hot environment for a long time, and the sealant is easily damaged by microorganisms and mildews. The mildew problem not only affects the vision and smell of living, but also has great harm to human body due to toxin generated by certain mildew on the mildew sealant.
The common mildew inhibitors in the market at present mainly comprise quaternary ammonium salts, biguanides, halides, isothiazoline, pyridines, thiophenes, quinolinones or nano silver and the like.
The silane modified polyether resin adopted in chinese patent CN104479608A is polyether terminated with trimethoxysilyl or methyldimethoxysilyl, and the mildew preventive adopted is quinolinone or imidazole.
Chinese patent CN105086907A adopts isothiazoline mildew preventive to prepare a mildew-proof sealant.
Chinese patent CN112724923A uses biguanide and halide as mildew preventive to prepare the ketoxime removing type organosilicon sealant.
Chinese patent CN101298550A adopts inorganic nano silver particles as a nano mildew-proof neutral silicone sealant prepared by a mildew inhibitor. However, these conventional mildewcides have many problems such as short mildewproof time, poor safety, and the like.
In view of the addition of the mildew inhibitor and the bactericide in the prior patent application, only a single mildew inhibitor is generally adopted in the system, but the problem of long-acting mildew resistance cannot be solved.
Disclosure of Invention
In order to solve the problems, the invention provides a long-acting mildew-proof deacidification sealant for buildings and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the long-acting mildew-proof deacidification sealant for the building is prepared from the following raw materials in parts by weight: 100 weight portions of alpha, omega-dihydroxy dimethyl silicone polymer, 10 to 30 weight portions of dimethyl silicone oil, 5 to 10 weight portions of cross linker, 8 to 15 weight portions of reinforcing agent, 1 to 5 weight portions of tackifier, 3 to 10 weight portions of titanium dioxide, 0.3 to 1 weight portion of mildew inhibitor, 0.5 to 2 weight portions of nano zinc oxide and 0.01 to 0.5 weight portion of catalyst.
The deacidification type mildew-proof sealant which is not bonded to a base material comprises 100 parts by weight of alpha, omega-dihydroxy polydimethylsiloxane, wherein the kinematic viscosity of the alpha, omega-dihydroxy polydimethylsiloxane is preferably 20000-80000 mm 2 S, more preferably 50000 to 80000mm 2 And/s, the alpha, omega-dihydroxy polydimethylsiloxane silica with one viscosity can be singly used, and a plurality of alpha, omega-dihydroxy polydimethylsiloxane silica with different viscosities can be matched for use.
In a preferred embodiment of the present invention, the kinematic viscosity of the α, ω -dihydroxypolydimethylsiloxane is 20000 to 80000mm 2 /s。
As a preferable proposal of the invention, the kinematic viscosity of the dimethyl silicone oil is 100 to 350mm 2 /s。
The dimethyl silicone oil in the invention is preferably 15 to 25 parts, wherein the kinematic viscosity of the dimethyl silicone oil is preferably 100 to 350mm 2 And(s) in the presence of a catalyst. In the invention, the dimethyl silicone oil mainly plays a role in plasticization, and can improve the extrusion performance of the sealant.
As a preferable scheme of the invention, the cross-linking agent is a compound composition of methyl triacetoxysilane and ethyl triacetoxysilane, wherein the compound mass ratio of the methyl triacetoxysilane to the ethyl triacetoxysilane is 1-1.
Preferably, the crosslinking agent in the present invention is 10 to 12 parts by weight.
In a preferred embodiment of the present invention, the reinforcing agent is fumed silica subjected to hydrophobic modification treatment, and the specific surface area of the reinforcing agent is 150 to 200m 2 /g。
In the invention, the modified fumed silica mainly plays a role in enhancing and simultaneously plays a role in improving the oil resistance of the sealant.
In the invention, the titanium dioxide is preferably 3-5 parts by weight, the titanium dioxide is preferably gas phase method nano-scale titanium dioxide, the titanium dioxide mainly plays a role in high temperature oxidation resistance, the service life of the sealant at high temperature is prolonged, the thixotropy can be improved, and the sealant is endowed with bright and white color performance.
In a preferred embodiment of the present invention, the tackifier is selected from hydrolyzed copolymers of methyl triacetoxysilane and gamma-glycidoxypropyltrimethoxysilane or (3-glycidoxypropyl) methyldiethoxysilane, and the copolymerization ratio of the hydrolyzed copolymers is 1.
Preferably, the tackifier accounts for 1 to 3 parts by weight, and the tackifier mainly improves the bonding capacity of the sealant to a base material and has the effect of tackifying.
In a preferable embodiment of the invention, the active ingredient of the mildew inhibitor is broad-spectrum mildew inhibitor tebuconazole, and the content of the active ingredient is 30%.
Preferably, the mildew preventive is 0.5-1 part by weight, and the tebuconazole is a low-toxicity bactericide in terms of safety, and has high bactericidal activity and long lasting period.
The invention also comprises 0.5-2 parts of nano zinc oxide by weight, preferably 0.5-1 part of nano zinc oxide by weight, wherein the inorganic nano zinc oxide is used as an inorganic antibacterial agent and is cooperated with a mildew preventive, the antibacterial reaction condition is 'green', the antibacterial effect is achieved by decomposing organic matters through photoreaction, and the nano zinc oxide can also be used as an ultraviolet absorbent and an antioxidant, so that the indexes of the wear resistance, the mechanical strength and the anti-aging performance of the cured sealant are improved.
As a preferred embodiment of the present invention, the catalyst comprises an organotin catalyst.
Preferably, the catalyst in the present invention is 0.05 to 0.4 part by weight, more preferably 0.1 to 0.3 part by mass. The catalyst is preferably an organotin catalyst, more preferably one or more of dibutyltin dilaurate, dioctyltin dilaurate, dimethyltin dioctanoate, dibutyltin diacetate, stannous octoate, stannous oxalate, dibutyltin maleate and dibutyltin diacyloxy heptane.
In a preferred embodiment of the present invention, the plasticizer comprises dipropylene glycol methyl ether.
The invention also provides a preparation method of the long-acting mildew-proof deacidification sealant for the building, which comprises the following steps:
a) Adding alpha, omega-dihydroxy polydimethylsiloxane, simethicone and a cross-linking agent into a high-speed dispersion planetary machine, stirring for 10-20 min in vacuum, and controlling the temperature at 20-50 ℃;
b) Adding a reinforcing agent, titanium dioxide and nano zinc oxide into the mixture obtained in the step A), and stirring for 20-30 min in vacuum;
c) Adding the tackifier, the mildew preventive and the catalyst into the mixture B), stirring for 15-30 min in vacuum, and uniformly mixing to obtain the long-acting mildew-proof deacidification sealant for the building.
In the preparation method, the vacuum degree is controlled to be-0.09 to-0.1 MPa, more preferably-0.095 to-0.1 MPa, so that partial solidification of a moisture product in the air contacted by the sealant due to insufficient vacuum degree is avoided, and the dispersion rotating speed of the high-speed dispersion planetary machine is preferably 300 to 700r/min, more preferably 500 to 700r/min; the stirring speed is preferably 20-30 r/min, more preferably 25-30 r/min, so that the components of the sealant are fully mixed and uniformly stirred. After stirring, the temperature is reduced to less than or equal to 50 ℃, and preferably 20-40 ℃.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a long-acting mildew-proof deacidification type sealant for buildings, which not only has long-acting and broad-spectrum mildew-proof effects, but also has the excellent characteristics of high strength, oxidation resistance and the like, and can be widely applied to the field of buildings, such as indoor decoration joint filling, glass bonding, kitchen pools, bathrooms and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The raw materials used in the present invention are all commercially available.
The deacidification type mildew-proof sealant disclosed by the invention has the advantages that the components are added, the contents of the components are regulated, the components are mutually interacted, and finally, the sealant has good mildew-proof performance, high strength and ageing resistance.
Example 1
The embodiment provides a preparation method of a long-acting mildew-proof deacidification sealant for buildings, which comprises the following steps:
adding a high-speed dispersion planetary machine with the kinematic viscosity of 80000mm 2 Alpha, omega-dihydroxypolydimethylsiloxane/s, kinematic viscosity of 100mm 2 The dimethyl silicone oil and the cross-linking agent (methyl triacetoxysilane: ethyl triacetoxysilane is 1) are stirred for 30min in vacuum, and the temperature is controlled below 50 ℃ in the whole process; after stirring, breaking vacuum, adding modified fumed silica and titanium dioxide, and stirring for 30min under vacuum. And finally, adding tackifying (1. The specific usage is shown in Table 1, and the performance data is shown in Table 5
The performance of the obtained long-acting mildew-proof deacidification sealant for the building is measured, and the result is shown in table 5.
TABLE 1 ingredient data Table for the deacidified mildewproof sealant (blank) of this example
| Components | Amount per part |
| Alpha, omega-dihydroxy polydimethylsiloxane | 100 |
| Dimethyl silicone oil | 20 |
| Modified fumed silica | 10 |
| Nano titanium dioxide | 5 |
| Crosslinking agent | 6 |
| Tackifier | 2 |
| Nano zinc oxide | 0 |
| Mildew preventive | 0 |
| Dibutyl tin dilaurate | 0.1 |
Example 2
The embodiment provides a preparation method of a long-acting mildew-proof deacidification sealant for buildings, which comprises the following steps:
adding 80000mm kinematic viscosity into high-speed dispersion planetary machine 2 Alpha, omega-dihydroxypolydimethylsiloxane/s, kinematic viscosity of 100mm 2 S dimethyl siliconOil and cross-linking agent (methyl triacetoxysilane: ethyl triacetoxysilane is 1), stirring in vacuum for 30min, and controlling the temperature below 50 deg.C in the whole process; after stirring, breaking vacuum, adding modified fumed silica, titanium dioxide and nano zinc oxide, and stirring for 30min under vacuum. And finally, adding a tackifying agent (1. The specific amounts used are shown in Table 2, and the performance data are shown in Table 5.
Table 2 shows the data table of the component content of the deacidification type mildewproof sealant in the embodiment
Example 3
The embodiment provides a preparation method of a long-acting mildew-proof deacidification sealant for buildings, which comprises the following steps:
adding 80000mm kinematic viscosity into high-speed dispersion planetary machine 2 S and 20000mm 2 Alpha, omega-dihydroxypolydimethylsiloxane/s, kinematic viscosity 350mm 2 The dimethyl silicone oil and the cross-linking agent (methyl triacetoxysilane: ethyl triacetoxysilane is 1; after stirring, breaking vacuum, adding modified fumed silica, titanium dioxide and nano zinc oxide, and stirring for 30min under vacuum. And finally, adding a tackifying agent (a 1.5 hydrolyzed copolymer of methyl triacetoxysilane and gamma-glycidoxypropyltrimethoxysilane), an anti-mildew agent and dibutyltin diacetate into the mixture, stirring for 20min under vacuum, uniformly stirring under vacuum and discharging. The specific amounts used are shown in Table 3, and the performance data are shown in Table 5.
TABLE 3 data table of the contents of the components of the deacidified mildewproof sealant in this example
Example 4
The embodiment provides a preparation method of a long-acting mildew-proof deacidification sealant for buildings, which comprises the following steps:
respectively adding the kinematic viscosity of 60000mm into a high-speed dispersion planetary machine 2 Alpha, omega-dihydroxypolydimethylsiloxane,/s, kinematic viscosity 350mm 2 The dimethyl silicone oil and the cross-linking agent (methyl triacetoxysilane: ethyl triacetoxysilane is 1; after stirring, breaking vacuum, adding modified fumed silica, titanium dioxide and nano zinc oxide, and stirring for 30min under vacuum. And finally, adding a tackifying agent (1. The specific usage amount is shown in table 4, and the performance measurement result of the obtained long-acting mildew-proof deacidification sealant for the building is shown in table 5.
TABLE 4 data table of the contents of the components of the deacidified mildewproof sealant in this example
| Components | Amount per part |
| Alpha, omega-dihydroxy polydimethylsiloxane | 100 |
| Dimethyl silicone oil | 15 |
| Modified fumed silica | 12 |
| Nano titanium dioxide | 5 |
| Crosslinking agent | 8 |
| Tackifier | 1 |
| Nano zinc oxide | 1.5 |
| Mildew preventive | 0.5 |
| Dibutyl tin diacetate | 0.2 |
TABLE 5 EXAMPLES 1-4 Performance data tables
Wherein the mildew-proof grade is as follows:
stage 0: no significant mold growth at about 50 times magnification;
level 1: mildew can not be seen or is difficult to see by the naked eyes, but obvious mildew can be seen under a magnifier;
and 2, stage: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 10-30%;
and 3, stage: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 30-60 percent;
and 4, stage 4: mold growth was evident to the naked eye with coverage greater than 60% on the surface of the sample.
Therefore, the long-acting mildew-proof deacidification sealant for the buildings provided by the invention has long-acting and broad-spectrum mildew-proof effects, has the excellent characteristics of high strength, oxidation resistance and the like, and can be widely applied to the field of buildings, such as indoor decoration joint filling, glass bonding, kitchen pools, bathrooms and the like.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any equivalent changes, modifications and evolutions of the above embodiments according to the essential technology of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. The long-acting mildew-proof deacidification sealant for the building is characterized by comprising the following raw materials in parts by weight: 100 weight portions of alpha, omega-dihydroxy dimethyl silicone polymer, 10 to 30 weight portions of dimethyl silicone oil, 5 to 10 weight portions of cross-linking agent, 8 to 15 weight portions of reinforcing agent, 1 to 5 weight portions of tackifier, 3 to 10 weight portions of titanium dioxide, 0.3 to 1 weight portion of mildew preventive, 0.5 to 2 weight portions of nano zinc oxide and 0.01 to 0.5 weight portion of catalyst.
2. The long-acting mildew-proof deacidification sealant for buildings as claimed in claim 1, wherein the kinematic viscosity of the alpha, omega-dihydroxy polydimethylsiloxane is 20000-80000 mm 2 /s。
3. The long-acting mildew-proof deacidification sealant for buildings as claimed in claim 1, wherein the kinematic viscosity of the dimethyl silicone oil is 100-350 mm 2 /s。
4. The long-acting mildew-proof deacidification sealant for buildings according to claim 1, wherein the cross-linking agent is a compound composition of methyl triacetoxysilane and ethyl triacetoxysilane, wherein the compound mass ratio of the methyl triacetoxysilane to the ethyl triacetoxysilane is 1 to 1.
5. The long-acting mildew-proof deacidification sealant for buildings as claimed in claim 1, wherein the reinforcing agent is fumed silica subjected to hydrophobic modification treatment, and the specific surface area of the reinforcing agent is 150-200 m 2 /g。
6. The long-acting mildew-proof deacidification sealant for buildings according to claim 1, wherein the tackifier is selected from a hydrolyzed copolymer of methyl triacetoxysilane and gamma-glycidyl ether oxypropyl trimethoxysilane or (3-glycidoxypropyl) methyldiethoxysilane, and the copolymerization ratio of the hydrolyzed copolymer is 1.
7. The long-acting mildew-proof deacidification sealant for the buildings as claimed in claim 1, wherein the active ingredient of the mildew preventive is broad-spectrum mildew preventive tebuconazole, and the content of the active ingredient is 30%.
8. The long-acting mildew-proof deacidification sealant for buildings according to claim 1, wherein the catalyst comprises an organotin catalyst.
9. The long-acting mold and acid stripping type sealant for construction as claimed in claim 1, wherein said plasticizer comprises dipropylene glycol methyl ether.
10. A method of preparing the long-lasting, mould-proof, acid-release sealant according to any of claims 1-9 for construction, comprising the steps of:
a) Adding alpha, omega-dihydroxy polydimethylsiloxane, simethicone and a cross-linking agent into a high-speed dispersion planetary machine, stirring for 10-20 min in vacuum, and controlling the temperature at 20-50 ℃;
b) Adding a reinforcing agent, titanium dioxide and nano zinc oxide into the mixture obtained in the step A), and stirring for 20-30 min in vacuum;
c) Adding the tackifier, the mildew preventive and the catalyst into the mixture B), stirring for 15-30 min in vacuum, and uniformly mixing to obtain the long-acting mildew-proof deacidification sealant for the building.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785897A (en) * | 2022-12-26 | 2023-03-14 | 东莞市凯特粘胶有限公司 | Antibacterial and mildewproof neutral silicone sealant and preparation method thereof |
| CN116463103A (en) * | 2023-05-12 | 2023-07-21 | 广东裕鑫新材料科技有限公司 | Antibacterial mildew-proof sealant and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0776654A (en) * | 1993-09-08 | 1995-03-20 | Shin Etsu Chem Co Ltd | Mildew proofing silicone rubber composition and silicone rubber |
| CN104194713A (en) * | 2014-08-07 | 2014-12-10 | 深圳市顾康力化工有限公司 | Anti-mildew and antibacterial glass cement and preparation method thereof |
| CN107245319A (en) * | 2017-08-01 | 2017-10-13 | 合肥利裕泰玻璃制品有限公司 | A kind of high attachment shock resistance double glazing fluid sealant and preparation method thereof |
| CN110511719A (en) * | 2019-08-02 | 2019-11-29 | 中国航发北京航空材料研究院 | One pack system high intensity depickling type room temperature vulcanized organosilicon sealant and preparation method thereof |
-
2022
- 2022-09-20 CN CN202211142848.9A patent/CN115418191A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0776654A (en) * | 1993-09-08 | 1995-03-20 | Shin Etsu Chem Co Ltd | Mildew proofing silicone rubber composition and silicone rubber |
| CN104194713A (en) * | 2014-08-07 | 2014-12-10 | 深圳市顾康力化工有限公司 | Anti-mildew and antibacterial glass cement and preparation method thereof |
| CN107245319A (en) * | 2017-08-01 | 2017-10-13 | 合肥利裕泰玻璃制品有限公司 | A kind of high attachment shock resistance double glazing fluid sealant and preparation method thereof |
| CN110511719A (en) * | 2019-08-02 | 2019-11-29 | 中国航发北京航空材料研究院 | One pack system high intensity depickling type room temperature vulcanized organosilicon sealant and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785897A (en) * | 2022-12-26 | 2023-03-14 | 东莞市凯特粘胶有限公司 | Antibacterial and mildewproof neutral silicone sealant and preparation method thereof |
| CN116463103A (en) * | 2023-05-12 | 2023-07-21 | 广东裕鑫新材料科技有限公司 | Antibacterial mildew-proof sealant and preparation method thereof |
| CN116463103B (en) * | 2023-05-12 | 2024-05-14 | 佛山市荞鸿新材料有限公司 | Antibacterial mildew-proof sealant and preparation method thereof |
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