CN113372812B - Organic silicon elastic coating for building waterproofing and preparation method and application thereof - Google Patents
Organic silicon elastic coating for building waterproofing and preparation method and application thereof Download PDFInfo
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- CN113372812B CN113372812B CN202110680315.5A CN202110680315A CN113372812B CN 113372812 B CN113372812 B CN 113372812B CN 202110680315 A CN202110680315 A CN 202110680315A CN 113372812 B CN113372812 B CN 113372812B
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- building waterproofing
- zinc sulfide
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- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000004078 waterproofing Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 10
- 229910052710 silicon Inorganic materials 0.000 title claims description 10
- 239000010703 silicon Substances 0.000 title claims description 10
- 238000003756 stirring Methods 0.000 claims abstract description 43
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 41
- 239000005083 Zinc sulfide Substances 0.000 claims abstract description 24
- 229910052984 zinc sulfide Inorganic materials 0.000 claims abstract description 24
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims abstract description 23
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 14
- -1 modified nano-silver zinc sulfide Chemical class 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 13
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 229920002545 silicone oil Polymers 0.000 claims abstract description 7
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 42
- 239000000843 powder Substances 0.000 claims description 26
- 238000005507 spraying Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- OUGKFJZADGTJRG-UHFFFAOYSA-N [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O OUGKFJZADGTJRG-UHFFFAOYSA-N 0.000 claims description 6
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- ARGICNMLPHJXTP-UHFFFAOYSA-N [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O ARGICNMLPHJXTP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- ONNSHOGPJFYSSP-UHFFFAOYSA-N [SiH4].C1(=CC=CC=C1)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].C1(=CC=CC=C1)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O ONNSHOGPJFYSSP-UHFFFAOYSA-N 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- JJLKTTCRRLHVGL-UHFFFAOYSA-L [acetyloxy(dibutyl)stannyl] acetate Chemical compound CC([O-])=O.CC([O-])=O.CCCC[Sn+2]CCCC JJLKTTCRRLHVGL-UHFFFAOYSA-L 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 4
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000011049 filling Methods 0.000 abstract description 6
- 238000004898 kneading Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000003566 sealing material Substances 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- 238000007665 sagging Methods 0.000 description 4
- 229920002396 Polyurea Polymers 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000004590 silicone sealant Substances 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 241000907903 Shorea Species 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 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
- 238000004073 vulcanization Methods 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
- C09D183/00—Coating compositions 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
- C08K2003/3036—Sulfides 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to the field of high polymer sealing materials, and discloses an organosilicon elastic coating for building waterproofing, and a preparation method and application thereof. The modified nano-silver zinc sulfide is prepared from a, omega-hydroxyl-terminated polydimethylsiloxane, dimethyl silicone oil, modified superfine zinc sulfide, modified superfine barium sulfate, modified aluminum hydroxide, a silane coupling agent, a cross-linking agent and a catalyst. The preparation method comprises the steps of kneading, stirring and mixing the raw materials in steps under the conditions that the vacuum degree is-0.09-0.1 Mpa and the stirring speed is 20-30 Hz for 65-75 min, discharging and filling to obtain the product. The waterproof adhesive has good performance when applied to building waterproofing, has good adhesion to concrete, and has the advantages of rotational viscosity of 26000-35000 mpa.s, hardness of 42-50 shore A, tensile strength of 4.0-4.7 MPa, elongation at break of 260-320%, peeling adhesion of 6.0-8.0N/mm and the like.
Description
Technical Field
The invention relates to the field of high polymer sealing materials, in particular to an organic silicon elastic coating for building waterproofing, a preparation method and application thereof.
Background
According to investigation, the water leakage problem of the top floor of the large building with the building age of more than 5 years is different. At present, the materials for floor waterproofing in China mainly comprise coiled materials and coatings.
The coiled material mainly takes the modified asphalt as a main material, and because the coiled material is lapped through melting when in use and the heat resistance and the aging resistance of the asphalt material are relatively poor, the coiled material cannot play a good waterproof function when being used for a long time.
The coating is mainly polyurethane, and although the weather resistance and aging resistance of the polyurethane material are better than those of the modified asphalt material, the coating is far from the organosilicon material, and the problem of water leakage of the building roof can not be effectively and thoroughly solved.
The patent publication No. CN106947427A in the prior art discloses a silicone sealant for construction and a preparation method thereof, wherein the adopted hyperbranched polyurea anti-sagging agent is adopted, and the hyperbranched molecular structure and the contained groups of the hyperbranched polyurea anti-sagging agent are utilized to enable the hyperbranched polyurea anti-sagging agent to have the characteristics of low viscosity, good dispersibility, good thixotropy and the like, and the hyperbranched molecular structure and the contained groups are used as the anti-sagging agent to be added into the silicone sealant, so that the sealant is endowed with an excellent thixotropic effect.
Prior art patent publication No. CN110938405A discloses a heat-resistant, acid-and alkali-resistant organic silica gel prepared by adding TiO to alpha, omega-dihydroxy polydimethylsiloxane 2 P 25 、TiO 2 PF 2 And heat-resistant agent composed of polyisobutylene and superfine precipitated barium sulfate as acid-base resistant filler, which can greatly improve the thermal stability and acid-base resistance of organic silica gel.
The prior art patent publication No. CN111849414A discloses a modified nano-silicon-fluorine rubber for floor waterproofing and a preparation method thereof, wherein modified nano-spherical barium sulfate is used as a filler to reinforce a colloid, and the fluidity of the colloid is not influenced. However, this product has a problem that hardness, tensile strength and peel adhesion are weak.
Disclosure of Invention
The invention aims to solve the problems of weak hardness, tensile strength, peeling adhesion and the like in the application effect of products in the prior art, and provides the organosilicon elastic coating for building waterproofing.
The invention also aims to provide a preparation method and application of the organic silicon elastic coating for building waterproofing.
The invention also aims to provide application of the organic silicon elastic coating for building waterproofing
The purpose of the invention is realized by the following technical scheme:
an organosilicon elastic coating for building waterproofing is composed of the following raw materials in parts by weight:
the surface drying time of the organosilicon elastic coating for building waterproofing is 20-30 min, the rotational viscosity is 26000-35000 mpa.s, the hardness is 42-50 shore A, the tensile strength is 4.0-4.7 MPa, and the elongation at break is 260-320%; the water impermeability is not permeable for 24 hours under the water pressure of 0.3 MPa; the peel adhesion is 6.0-8.0N/mm, and the impact resistance is 1.5-1.9 kg.m;
the a, omega-hydroxyl-terminated polydimethylsiloxane consists of a viscosity of 750-1500 mpa.s and 20000-80000 mpa.s at the temperature of 25 ℃;
the modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide are prepared through spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder with hexamethyldisilazane.
The invention is room temperature vulcanized silicone rubber, and vulcanization crosslinking requires trace moisture in the air for reaction. The invention innovatively adopts the surface modification of the powder to remove the water in the powder so as to achieve the aim of eliminating the adverse effects.
Preferably, the ratio of the a, omega-hydroxyl-terminated polydimethylsiloxane with the viscosity of 750-1500 mpa.s at the temperature of 25 ℃ to the a, omega-hydroxyl-terminated polydimethylsiloxane with the viscosity of 20000-80000 mpa.s is as follows: 30-70: 70-30.
Preferably, the viscosity of the dimethyl silicone oil at the temperature of 25 ℃ is 50-350 mpa.s.
Preferably, the granularity of the zinc sulfide powder is 5000-6000 meshes; the particle size of the barium sulfate powder is 5000-6000 meshes; the granularity of the aluminum hydroxide is 2000-3000 meshes.
Preferably, the spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 60-80 ℃, stirring for 30-60 min under the condition that the vacuum degree is-0.08-0.06 MPa, uniformly spraying the hexamethyldisilazane on the surface of the powder through a metering device at the speed of 1-1.5L/h, and continuously stirring for 30-60 min, wherein the vacuum degree is-0.08-0.06 MPa or cooling under the protection of nitrogen.
Preferably, the silane coupling agent is one of gamma-aminopropyltriethoxysilane, gamma-aminoethylaminopropyltrimethoxysilane or a combination thereof.
Preferably, the cross-linking agent is two combinations of methyl tributyrinoxime silane, vinyl tributyrinoxime silane and phenyl tributyrinoxime silane.
Preferably, the catalyst is one of di-n-butyl tin dilaurate, di-n-butyl tin diacetate or a combination thereof.
A preparation method of the organic silicon elastic coating for building water resistance comprises the steps of kneading, stirring and mixing the raw materials step by step at a vacuum degree of-0.09 MPa to-0.1 MPa and a stirring speed of 20Hz to 30Hz, discharging and filling to obtain the product.
The organic silicon elastic coating for building waterproofing is applied to building waterproofing.
Compared with the prior art, the invention has the following technical effects:
the invention provides the organosilicon elastic coating for building waterproofing by combining the excellent comprehensive performance of organosilicon materials, not only provides an organosilicon elastic coating product with higher hardness, tensile strength and stripping adhesion for the floor waterproofing field, but also is beneficial to effectively and thoroughly solving the problem of building roof water leakage.
According to the invention, through optimizing a formula system, modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide are used as fillers, so that the rubber body has the functions of reinforcement and flame retardance, and meanwhile, the fluidity of the rubber body is not influenced.
The organosilicon elastic coating for building water resistance has the characteristics of good fluidity, high tensile strength and good extensibility, has good adhesion to concrete, and has the surface drying time of 20-30 min, the rotational viscosity of 26000-35000 mpa.s, the hardness of 42-50 shoreA, the tensile strength of 4.0-4.7 MPa, the elongation at break of 260-320%, the impermeability (impermeability for 24h under the water pressure of 0.3 MPa), the peel adhesion of 6.0-8.0N/mm, the impact resistance of 1.5-1.9 kg.m, the heating expansion rate of less than-0.04%, the water absorption rate of less than or equal to 1.5%, and the colloid can also keep good performance after stretching aging, thermal aging, acid-base salt aging and artificial climate aging.
Detailed Description
The following further describes embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, various embodiments of the invention are described below
Example 1
An organosilicon elastic coating for building waterproofing comprises the following raw materials in parts by weight:
wherein:
the cross-linking agent comprises 7 parts by weight of methyl tributyrinoxime silane and 1.5 parts by weight of vinyl tributyrinoxime silane.
The modified superfine zinc sulfide, the modified superfine barium sulfate and the modified aluminum hydroxide are prepared by respectively spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder by hexamethyldisilazane. The spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 60 ℃, stirring for 30min under the condition that the vacuum degree is minus 0.08MPa, then uniformly spraying the hexamethyldisilazane onto the surface of the powder through a metering device at the speed of 1L/h, continuously stirring for 60min, and cooling under the condition that the vacuum degree is minus 0.06 MPa.
The preparation method of the organosilicon elastic coating for building waterproofing comprises the following steps:
according to the mixture ratio of the raw materials, firstly, adding alpha, omega-hydroxyl-terminated polydimethylsiloxane, modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide into a planetary stirrer, and stirring for 20min under the vacuum degree of-0.09 Mpa and the stirring frequency of 30 Hz; adding dimethyl silicone oil into planetary stirrer, and stirring at vacuum degree of-0.09 Mpa and stirring frequency of 30Hz for 20 min; finally, adding the cross-linking agent, the silane coupling agent and the catalyst, stirring for 25min under the conditions of vacuum degree of-0.1 Mpa and stirring frequency of 25Hz, discharging and filling to obtain the product.
Example 2
The embodiment of the invention relates to a waterproof organic silicon elastic coating for buildings, which comprises the following raw materials in parts by weight:
wherein:
the cross-linking agent comprises, by weight, 7.5 parts of methyl tributyrinoxime silane and 1.5 parts of vinyl tributyrinoxime silane.
The modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide are prepared through spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder with hexamethyldisilazane. The spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 80 ℃, stirring for 60min under the condition that the vacuum degree is-0.08 MPa, then uniformly spraying the hexamethyldisilazane onto the surface of the powder through a metering device at the speed of 1.5L/h, continuously stirring for 30min, and cooling under the protection of nitrogen.
The preparation method of the organosilicon elastic coating for building waterproofing comprises the following steps:
according to the mixture ratio of the raw materials, firstly, adding alpha, omega-hydroxyl-terminated polydimethylsiloxane, modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide into a planetary stirrer, and stirring for 30min under the vacuum degree of-0.09 Mpa and the stirring frequency of 30 Hz; adding dimethyl silicone oil into planetary stirrer, and stirring at vacuum degree of-0.09 Mpa and stirring frequency of 30Hz for 20 min; and finally, adding the cross-linking agent, the silane coupling agent and the catalyst, stirring for 25min under the conditions of vacuum degree of-0.1 Mpa and stirring frequency of 20Hz, discharging and filling to obtain the product.
Example 3
The embodiment of the invention relates to a waterproof organic silicon elastic coating for buildings, which comprises the following raw materials in parts by weight:
wherein:
the cross-linking agent comprises 9 parts by weight of methyl tributyrinoxime silane and 1.5 parts by weight of phenyl tributyrinoxime silane.
The modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide are prepared through spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder with hexamethyldisilazane. The spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 70 ℃, stirring for 30min under the condition that the vacuum degree is minus 0.08MPa, then uniformly spraying the hexamethyldisilazane on the surface of the powder through a metering device at the speed of 1.5L/h, continuously stirring for 60min, and cooling under the vacuum degree of minus 0.06 MPa.
The preparation method of the organosilicon elastic coating for building waterproofing comprises the following steps:
according to the raw material proportion, firstly, adding alpha, omega-hydroxyl-terminated polydimethylsiloxane, modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide into a planetary stirrer, and stirring for 20min under the vacuum degree of-0.09 Mpa and the stirring frequency of 25 Hz; adding dimethyl silicone oil into a planetary stirrer, and stirring for 30min under the conditions of vacuum degree of-0.09 Mpa and stirring frequency of 30 Hz; and finally, adding the cross-linking agent, the silane coupling agent and the catalyst, stirring for 20min under the conditions of vacuum degree of-0.1 Mpa and stirring frequency of 30Hz, discharging and filling to obtain the product.
Example 4
The embodiment of the invention relates to a waterproof organosilicon elastic coating for buildings, which comprises the following raw materials in parts by weight:
wherein:
the cross-linking agent comprises 8 parts of methyl tributyrinoxime silane and 1 part of vinyl tributyrinoxime silane in parts by weight.
The modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide are prepared through spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder with hexamethyldisilazane. The spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 80 ℃, stirring for 30min under the condition that the vacuum degree is minus 0.08MPa, then uniformly spraying the hexamethyldisilazane on the surface of the powder through a metering device at the speed of 1L/h, continuously stirring for 40min, and cooling under the protection of nitrogen.
The preparation method of the organosilicon elastic coating for building waterproofing comprises the following steps:
according to the raw material proportion, firstly, adding alpha, omega-hydroxyl-terminated polydimethylsiloxane, modified superfine zinc sulfide, modified superfine barium sulfate and modified aluminum hydroxide into a planetary stirrer, and stirring for 25min under the vacuum degree of-0.09 Mpa and the stirring frequency of 30 Hz; adding dimethyl silicone oil into the planetary stirrer, and stirring for 30min under vacuum degree of-0.09 Mpa and stirring frequency of 30 Hz; finally, adding the cross-linking agent, the silane coupling agent and the catalyst, stirring for 20min under the conditions of vacuum degree of-0.1 Mpa and stirring frequency of 30Hz, discharging and filling to obtain the product.
Comparative examples 1 to 8
Comparative examples 1 to 8 a method for preparing an organic silicon elastic coating for building waterproofing is the same as in example 1, and the raw material compositions in parts by weight thereof are shown in table 1.
Wherein: the silane coupling agent (gamma-aminoethyl aminopropyl trimethoxy silane), the cross-linking agent, the catalyst (di-n-butyl tin dilaurate) and the cross-linking agent comprise 7.5 parts of methyl tributyl ketoxime silane and 1.5 parts of vinyl tributyl ketoxime silane in parts by weight.
The modified superfine zinc sulfide, the modified superfine barium sulfate and the modified aluminum hydroxide are prepared by respectively spraying zinc sulfide powder, barium sulfate powder and aluminum hydroxide powder by hexamethyldisilazane. The spraying treatment process of the hexamethyldisilazane comprises the steps of heating powder to be treated to 60 ℃, stirring for 30min under the condition that the vacuum degree is minus 0.08MPa, then uniformly spraying the hexamethyldisilazane onto the surface of the powder through a metering device at the speed of 1L/h, continuously stirring for 60min, and cooling under the condition that the vacuum degree is minus 0.06 MPa.
And (3) performance testing:
the performance of the organosilicon elastic coating for building waterproofing prepared by the embodiments of the invention is tested according to the following method:
method for measuring viscosity: the rotational speed of the No. 4 rotor 6 was measured using a rotary viscometer.
Measuring the surface drying time according to GB/T13477.5-2002; testing the Shore hardness of the colloid according to GB/T531.1-2008; testing elongation at break and tensile strength according to GB/T528; according to GB/T16777-; determining the performance change of the colloid after the salt treatment according to GB/T11547-2008; the peel adhesion of the gels was measured according to GB/T13477.18-2002.
The test results of examples 1 to 4 are shown in Table 2.
Table 2 performance test data
The test results of comparative examples 1 to 8 are shown in Table 3.
Table 3 performance test data
"poor fluidity" means that the measured viscosity was 100000mpa.s or more, and the leveling was not attained, the workability was poor, and the measurement of the subsequent data was meaningless, and therefore, the measurement was not performed.
The test results in table 2 show that the organosilicon elastic coating for building waterproofing prepared by the embodiment of the invention has the characteristics of good fluidity, high tensile strength, good extensibility and excellent waterproofness, has good adhesion to concrete, can still keep good ductility and mechanical properties under severe aging conditions, does not contain harmful substances, and meets the requirements of environmental protection regulations.
The test results shown in table 3 show that 1, the product which meets the construction requirements and has balanced comprehensive performance is obtained by reasonably matching and using the alpha, omega-hydroxyl-terminated polydimethylsiloxane with high and low viscosity. When used alone, some properties are more prominent, but some properties are also deteriorated accordingly. 2. The use of the modified powder is beneficial to obtaining products meeting construction requirements.
The embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. The organic silicon elastic coating for building waterproofing is characterized by comprising the following raw materials in parts by weight:
the surface drying time of the organosilicon elastic coating for building waterproofing is 20-30 min, the rotational viscosity is 26000-35000 MPa & s, the hardness is 42-50 shore A, the tensile strength is 4.0-4.7 MPa, and the elongation at break is 260-320%; the water impermeability is realized under the water pressure of 0.3MPa for 24h, and the water impermeability is realized; the peel adhesion is 6.0-8.0N/mm, and the impact resistance is 1.5-1.9 kg.m;
the alpha, omega-hydroxyl-terminated polydimethylsiloxane consists of 750-1500 mpa & s and 20000-80000 mpa & s of viscosity at the temperature of 25 ℃;
the ratio of the alpha, omega-hydroxyl-terminated polydimethylsiloxane with the viscosity of 750-1500 mpa & s to the alpha, omega-hydroxyl-terminated polydimethylsiloxane with the viscosity of 20000-80000 mpa & s is as follows: 30-70: 70-30 parts;
the modification process of the modified superfine zinc sulfide, the modified superfine barium sulfate and the modified aluminum hydroxide is respectively that the zinc sulfide powder, the barium sulfate powder and the aluminum hydroxide powder are respectively sprayed by hexamethyldisilazane to prepare the zinc sulfide, barium sulfate and aluminum hydroxide powder;
the viscosity of the dimethyl silicone oil at the temperature of 25 ℃ is 50-350 mpa & s.
2. The silicone elastic coating for waterproofing of buildings according to claim 1, wherein the particle size of the zinc sulfide powder is 5000 to 6000 mesh; the particle size of the barium sulfate powder is 5000-6000 meshes; the granularity of the aluminum hydroxide powder is 2000-3000 meshes.
3. The organosilicon elastic coating for building waterproofing according to claim 1, wherein the hexamethyldisilazane is sprayed by heating the powder to be treated to 60-80 ℃, stirring for 30-60 min under the condition of vacuum degree of-0.08-0.06 MPa, then uniformly spraying hexamethyldisilazane on the surface of the powder by a metering device at the speed of 1-1.5L/h, and continuously stirring for 30-60 min, wherein the vacuum degree is-0.08-0.06 MPa or cooling under the protection of nitrogen.
4. The silicone elastic coating for building waterproofing according to claim 1, wherein the silane coupling agent is one of γ -aminopropyltriethoxysilane, γ -aminoethylaminopropyltrimethoxysilane or a combination thereof.
5. The silicone elastic coating for building waterproofing according to claim 1, characterized in that the crosslinking agent is two combinations of methyl tributyrinoxime silane, vinyl tributyrinoxime silane, and phenyl tributyrinoxime silane.
6. The silicone elastic coating for building waterproofing according to claim 1, wherein the catalyst is one of di-n-butyl tin dilaurate, di-n-butyl tin diacetate, or a combination thereof.
7. The preparation method of the organosilicon elastic coating for building water resistance according to any one of claims 1 to 6, characterized in that, the raw materials are added step by step under the vacuum degree of-0.09 to-0.1 Mpa and the stirring speed of 20 to 30Hz, kneaded, stirred and mixed for 65 to 75min, discharged and filled to obtain the product.
8. The application of the organosilicon elastic coating for building waterproofing according to any one of claims 1 to 6, characterized in that the coating is applied to building waterproofing.
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