CN112194938A - External wall interface agent and preparation method thereof - Google Patents
External wall interface agent and preparation method thereof Download PDFInfo
- Publication number
- CN112194938A CN112194938A CN202011003226.9A CN202011003226A CN112194938A CN 112194938 A CN112194938 A CN 112194938A CN 202011003226 A CN202011003226 A CN 202011003226A CN 112194938 A CN112194938 A CN 112194938A
- Authority
- CN
- China
- Prior art keywords
- solution
- lecithin
- interface agent
- stirring
- sucrose
- 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.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 164
- 239000000243 solution Substances 0.000 claims abstract description 116
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 claims abstract description 92
- 235000010445 lecithin Nutrition 0.000 claims abstract description 91
- 229940067606 lecithin Drugs 0.000 claims abstract description 91
- 239000000787 lecithin Substances 0.000 claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000003756 stirring Methods 0.000 claims abstract description 82
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 74
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims abstract description 57
- 229930006000 Sucrose Natural products 0.000 claims abstract description 57
- 229960004793 sucrose Drugs 0.000 claims abstract description 57
- 239000000839 emulsion Substances 0.000 claims abstract description 54
- 239000005720 sucrose Substances 0.000 claims abstract description 52
- 239000000741 silica gel Substances 0.000 claims abstract description 51
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000008367 deionised water Substances 0.000 claims abstract description 39
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 39
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 34
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 32
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract description 23
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 15
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 36
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 26
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 26
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 26
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 25
- 239000000661 sodium alginate Substances 0.000 claims description 25
- 235000010413 sodium alginate Nutrition 0.000 claims description 25
- 229940005550 sodium alginate Drugs 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 13
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 12
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 12
- -1 polydimethylsiloxane Polymers 0.000 claims description 12
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 12
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 12
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 11
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- PUSKHXMZPOMNTQ-UHFFFAOYSA-N ethyl 2,1,3-benzoselenadiazole-5-carboxylate Chemical group CCOC(=O)C1=CC=C2N=[Se]=NC2=C1 PUSKHXMZPOMNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 43
- 238000000576 coating method Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 18
- 239000011248 coating agent Substances 0.000 abstract description 15
- 239000000377 silicon dioxide Substances 0.000 abstract description 9
- 239000004566 building material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 41
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 29
- 230000001070 adhesive effect Effects 0.000 description 25
- 239000012528 membrane Substances 0.000 description 14
- 230000002209 hydrophobic effect Effects 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 10
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 125000001165 hydrophobic group Chemical group 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000000110 cooling liquid Substances 0.000 description 6
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 229910002012 Aerosil® Inorganic materials 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- JLPULHDHAOZNQI-ZTIMHPMXSA-N 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCC\C=C/C\C=C/CCCCC JLPULHDHAOZNQI-ZTIMHPMXSA-N 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 229940083466 soybean lecithin Drugs 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 206010016807 Fluid retention Diseases 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000189524 Baccharis halimifolia Species 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004078 waterproofing 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
- C09D131/00—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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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)
- Cosmetics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The application relates to the field of building materials, and particularly discloses an external wall interface agent and a preparation method thereof; an external wall interface agent is prepared from the following raw materials in parts by weight: polyvinyl acetate emulsion, polyvinyl alcohol solution, deionized water, defoaming agent, superfine silica powder, lecithin, cane sugar, absolute ethyl alcohol and functional emulsion; the preparation method comprises the following steps: weighing raw materials, and preparing lecithin solution from lecithin and absolute ethyl alcohol; preparing a sucrose solution from sucrose and part of deionized water; preparing aqueous solution from the micro silica gel powder and the rest deionized water; mixing and stirring polyvinyl acetate emulsion, polyvinyl alcohol solution, aqueous solution, lecithin solution and sucrose solution to prepare premixed solution; stirring the defoaming agent, the functional emulsion and the premixed solution to prepare a finished product of the interface agent; the waterproof coating has a good waterproof effect, and the influence of rainwater on the bonding performance of the interface agent in the drying process is avoided.
Description
Technical Field
The application relates to the field of building materials, in particular to an external wall interface agent and a preparation method thereof.
Background
The interface agent is an adhesive substance, is mainly used for treating the surface of an object, can be coated on the surfaces of concrete, terrazzo, cement, mortar and water brush stone, can consolidate a substrate and allow other substances to cover the substrate, has excellent permeability, can fully infiltrate the surface of a wall substrate material, enables the substrate to be compact through glue connection, improves the interface adhesive force, improves the adhesive strength of mortar or putty and the surface of the wall, and prevents hollowing.
The existing interface agent needs a period of drying and curing after being coated on the building outer wall, the drying and curing time is generally 12 hours, and when sudden rainfall occurs during the drying and curing period, rainwater is easy to contact with the interface agent, so that the bonding performance of the interface agent is influenced.
Disclosure of Invention
After the interface agent is coated on the surface of an external wall of a building, in order to avoid influence of rainwater on the adhesive property of the interface agent during drying and curing of the interface agent, the application provides the interface agent for the external wall and a preparation method thereof.
In a first aspect, the present application provides an exterior wall interface agent, which adopts the following technical scheme:
the external wall interface agent is prepared from the following raw materials in parts by weight: 15-25 parts of polyvinyl acetate emulsion, 2-4 parts of polyvinyl alcohol solution, 78-86 parts of deionized water, 0.05-0.1 part of defoaming agent, 1-2 parts of superfine silica gel powder, 0.5-0.8 part of lecithin, 0.1-0.5 part of cane sugar, 2-4 parts of absolute ethyl alcohol and 8-15 parts of functional emulsion.
By adopting the technical scheme, the polyvinyl acetate emulsion is matched with the polyvinyl alcohol solution, so that the interface agent has good cohesiveness, and the defoaming agent is matched to eliminate bubbles in the interface agent, so that the coating effect of the interface agent is prevented from being influenced by the bubbles; the micro silica gel powder, the sucrose and the lecithin are matched to form the waterproof membrane, so that the outer surface of the interface agent has a good waterproof effect, and when the interface agent is contacted with rainwater in the drying process, the waterproof membrane can prevent the interface agent from being diluted by the rainwater, so that the interface agent is prevented from being washed away from the surface of an outer wall body by the rainwater, and the adhesive property of the interface agent on the surface of the outer wall body is ensured.
When the interface agent is prepared, the superfine silica gel powder has a porous structure and also has good water absorption and water retention capacities, the superfine silica gel powder is matched with the sucrose, so that particles of the superfine silica gel powder are not easy to agglomerate and are uniformly dispersed, the water absorption of pores of the superfine silica gel powder can be enhanced, the water absorption and water retention of the superfine silica gel powder are further enhanced, and water molecules enter the porous structure of the superfine silica gel powder for storage; when the interface agent is used, the surface of the interface agent can form a waterproof membrane through the cooperation of the micro-powder silica gel, the hydrophilic groups of the lecithin are distributed towards the pores of the micro-powder silica gel, the hydrophobic groups of the lecithin are distributed outwards, and the hydrophobic groups of the lecithin can form a hydrophobic molecular layer due to the good dispersibility of the micro-powder silica gel, so that the waterproof membrane is formed, the effect of dewatering rainwater is achieved, and the influence of rainwater on the bonding performance of the interface agent in the drying and curing process is avoided.
Preferably, the external wall interface agent further comprises the following raw materials in parts by weight: 0.5-1 part of rosin and 0.5-1 part of sodium alginate.
Through adopting above-mentioned technical scheme, rosin and sodium alginate cooperate and make the water proof membrane have good adhesive property, thereby guarantee to keep good adhesive property between interfacial agent can and other coatings, rosin and sodium alginate cooperate simultaneously and make the water proof membrane's ventilation effect good, after the interfacial agent coats the wall, the water proof membrane can permeate through can outwards see through vapor, vapor among the external environment can not permeate through, make the interfacial agent in drying process, can very fast drying, avoid meetting the adhesive property that the rainwater influences the interfacial agent.
The temperature can be reduced along with the temperature reduction in the general rainfall process, and the sodium alginate, the micro-powder silica gel and the lecithin are matched, so that the interface agent has better water and effect, can absorb more stable water, and avoids the phenomenon that water which is not evaporated in the interface agent and has low temperature generates ice crystals, thereby influencing the drying effect of the interface agent.
Preferably, the functional emulsion consists of styrene-acrylic emulsion and sodium carboxymethyl cellulose in a weight ratio of 2: 1.
By adopting the technical scheme, the styrene-acrylic emulsion and the sodium carboxymethylcellulose are matched to ensure that the interface agent has good adhesiveness, the adhesive force, the water resistance, the oil resistance and the aging resistance of the interface agent can be enhanced, and meanwhile, the mechanical strength of the dried interface agent can be improved, so that the interface agent is more stably attached to the building outer wall.
The styrene-acrylic emulsion, the sodium carboxymethylcellulose and the rosin are matched, so that the waterproof film has a better film forming effect and stronger flexibility, rainwater hitting is avoided, holes are formed on the surface of the interfacial agent in the drying process, the adhesion of the formed waterproof film is increased, and the aging resistance and the water resistance are enhanced.
Preferably, the defoamer is polydimethylsiloxane.
By adopting the technical scheme, the polydimethylsiloxane has good defoaming property, so that the interface agent has good surface control capability, and shrinkage cavities are prevented from being formed to influence the coating performance of the interface agent; and the polydimethylsiloxane also has good leveling property, so that the drying time of the interface agent is prevented from being influenced by uneven viscosity, and the interface agent can be uniformly coated on the surface of an external wall of a building.
In a second aspect, the application provides a preparation method of an external wall interface agent, which adopts the following technical scheme:
the preparation method of the external wall interface agent comprises the following steps:
s1, weighing polyvinyl acetate emulsion, polyvinyl alcohol solution, deionized water, a defoaming agent, superfine silica gel powder, lecithin, sucrose, absolute ethyl alcohol and functional emulsion;
s2, placing lecithin into absolute ethyl alcohol, stirring and dissolving to obtain a lecithin solution; dissolving sucrose in 1/10 deionized water to obtain sucrose solution; putting the micro silica gel powder into the deionized water with the total amount of 9/10 of the deionized water, and stirring to prepare an aqueous solution;
s3, mixing and stirring the polyvinyl acetate emulsion, the polyvinyl alcohol solution and the aqueous solution prepared by the S2 to prepare a primary mixed solution;
s4, placing the lecithin solution and the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, and stirring to prepare a premixed solution;
and S5, placing the defoaming agent and the functional emulsion into the premixed liquid prepared in the S4, and stirring to obtain a finished product of the interface agent.
By adopting the technical scheme, the micropowder silica gel is placed in water to realize the maximum water absorption effect of the micropowder silica gel, and then the micropowder silica gel is mixed and stirred with the polyvinyl acetate emulsion and the polyvinyl alcohol solution to uniformly disperse the micropowder silica gel in the water solution, so that the lecithin is combined to form a hydrophobic layer conveniently; adding a lecithin solution and a sucrose solution into the primary mixed solution, and matching the superfine silica gel powder with the sucrose solution to ensure that the dispersibility of the superfine silica gel powder is better and more water molecules are adsorbed in pores inside the superfine silica gel powder; the lecithin is combined with the micro silica gel powder, so that the hydrophobic group of the lecithin is arranged outwards, the hydrophobic group of the lecithin forms a hydrophobic layer by utilizing the acting force between the lecithin, and after the interface agent is coated on a wall surface, the hydrophobic layer formed in the interface agent can prevent rainwater from contacting the interface agent in the drying process, so that the bonding property of the interface agent is ensured.
Preferably, in S2, lecithin is firstly put into absolute ethyl alcohol with total absolute ethyl alcohol amount of 1/2, stirred for 8min at 75 ℃ at a speed of 200r/min, cooled to room temperature, then the residual absolute ethyl alcohol with total absolute ethyl alcohol amount of 1/2 is added, and stirring is continued for 1min, so that the lecithin solution is prepared.
By adopting the technical scheme, the lecithin is heated and dissolved at the temperature of 75 ℃, so that the dissolving speed of the lecithin can be increased, the working efficiency is improved, and the working time is shortened; after the lecithin is dissolved, the residual absolute ethyl alcohol is added, so that the phenomenon that the excessive absolute ethyl alcohol is volatilized to influence the dissolution of the lecithin is avoided.
Preferably, sucrose in S2 is put into deionized water with the total amount of 1/10 of deionized water, and stirred for 5min at 70 ℃ and 500r/min to prepare a sucrose solution.
By adopting the technical scheme, the sucrose is heated and dissolved at the temperature of 70 ℃, and the dissolving speed of the sucrose can be accelerated, so that the working efficiency is improved, and the working time is shortened; and the prepared sucrose solution can better promote the connection between the micropowder silica gel and the lecithin.
Preferably, in S4, the sucrose solution is placed in the initial mixture, and then the lecithin solution is added dropwise at a rate of 40 drops/min.
By adopting the technical scheme, the sucrose solution and the primary mixed liquid are mixed firstly, so that the sucrose solution can modify the superfine silica powder, and the superfine silica powder has good binding force and water absorption; and then slowly dripping lecithin solution to ensure that the lecithin solution is uniformly contacted with the superfine silica gel powder, thereby ensuring that the hydrophobic group of the lecithin can form a uniform and seamless hydrophobic layer.
Preferably, the sucrose solution is placed in the primary mixed solution, stirred for 3min at the rotating speed of 500r/min, and stirred at the speed of 200r/min in the process of dripping the lecithin solution to prepare the premixed solution.
By adopting the technical scheme, the stirring speed of placing the sucrose solution in the primary mixed solution is limited to be 500r/min, so that the sucrose solution can efficiently and quickly contact with the superfine silica powder, and the superfine silica powder is modified; stirring at a stirring speed of 200r/min in the process of adding lecithin dropwise to avoid cutting off chemical bonds between hydrophilic groups of the lecithin and water molecules in pores of the silica gel micropowder in the stirring process, so that the lecithin and the silica gel micropowder can be tightly connected together, and a more stable hydrophobic layer can be formed on a hydrophobic group of the lecithin.
In summary, the present application has the following beneficial effects:
1. the polyvinyl acetate emulsion is matched with the polyvinyl alcohol solution, so that the interface agent has good cohesiveness, and the defoaming agent is matched to eliminate bubbles in the interface agent, so that the coating effect of the interface agent is prevented from being influenced by the bubbles; the micro silica gel powder, the sucrose and the lecithin are matched to form the waterproof membrane, so that the outer surface of the interface agent has a good waterproof effect, and when the interface agent is contacted with rainwater in the drying process, the waterproof membrane can prevent the interface agent from being diluted by the rainwater, so that the interface agent is prevented from being washed away from the surface of an outer wall body by the rainwater, and the adhesive property of the interface agent on the surface of the outer wall body is ensured.
2. Rosin and sodium alginate cooperate and make the water proof membrane have good adhesive property, thereby guarantee to keep good adhesive property between interfacial agent can and other coatings, rosin and sodium alginate cooperate simultaneously and make the ventilation effect of water proof membrane good, after the interfacial agent coats the wall, the water proof membrane can permeate and can outwards permeate vapor, vapor among the external environment can not permeate, make the interfacial agent in drying process, can very fast drying, avoid meetting the adhesive property that the rainwater influences the interfacial agent.
3. The styrene-acrylic emulsion, the sodium carboxymethylcellulose and the rosin are matched, so that the waterproof film has a better film forming effect and stronger flexibility, rainwater hitting is avoided, holes are formed on the surface of the interfacial agent in the drying process, the adhesion of the formed waterproof film is increased, and the aging resistance and the water resistance are enhanced.
4. Stirring at a stirring speed of 200r/min in the process of adding lecithin dropwise to avoid cutting off chemical bonds between hydrophilic groups of the lecithin and water molecules in pores of the silica gel micropowder in the stirring process, so that the lecithin and the silica gel micropowder can be tightly connected together, and a more stable hydrophobic layer can be formed on a hydrophobic group of the lecithin.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation example of polyvinyl acetate emulsion
The polyvinyl alcohols in the following preparation examples were purchased from polyvinyl alcohols 1799100-27 manufactured by Shanghai Hughai industries, Ltd; vinyl acetate purchased from Jinan Ming Wei chemical Co., Ltd, and having a density of 0.93g/cm3(ii) a Dibutyl phthalate was purchased from sienna metallocene chemical company limited; butyl acrylate purchased from Jinan MingWafer industries, Ltd.
Preparation example 1: the polyvinyl acetate emulsion is prepared by the following method:
weighing 62kg of deionized water, 6kg of polyvinyl alcohol, 32kg of vinyl acetate, 0.28kg of ammonium persulfate, 0.04kg of dibutyl phthalate, 7kg of butyl acrylate and 0.08kg of sodium bicarbonate;
II, putting deionized water and polyvinyl alcohol into a reaction kettle, stirring for 5min at 87 ℃ at 600r/min, then adding dibutyl phthalate and sodium bicarbonate, and continuing stirring for 4min to prepare a stirring solution;
III, adding ammonium persulfate, vinyl acetate and butyl acrylate into the stirring liquid prepared by the II, and stirring at the speed of 550r/min for 12min to prepare the polyvinyl acetate emulsion.
Preparation of polyvinyl alcohol solution the titanate coupling agent in the following preparation was purchased from chemical company, type 550, of bazaoban chemical co. Polyvinyl alcohol was purchased from polyvinyl alcohol 1799100-27 manufactured by Shanghai Hui practice Co., Ltd.
Preparation example 2: the polyvinyl alcohol solution is prepared by the following method:
weighing 70kg of deionized water, 3.5kg of polyvinyl alcohol and 0.25kg of titanate coupling agent;
② placing deionized water and polyvinyl alcohol into a reaction kettle, stirring for 40min at 85 ℃ and 400r/min, then adding titanate coupling agent, and continuing stirring for 1.8h to prepare polyvinyl alcohol solution.
Examples
The polydimethylsiloxanes in the following examples were purchased from Guangzhou excellence chemical Co., Ltd, Cat. PMX-50; the micro silica gel powder is purchased from Zhengzhou Kangyuan chemical products Co., Ltd; soybean lecithin was purchased from fine jade industries, ltd, Henan; styrene-acrylic emulsion was purchased from Populus beautifiere, Inc., Guangzhou; sodium carboxymethylcellulose was purchased from Henan Yankang food additives, Inc.; the absolute ethyl alcohol is purchased from Shandong Kaya chemical industry Co., Ltd, and the content is 99.97%.
Example 1: the external wall interface agent is prepared by the following method:
s1, weighing 20kg of polyvinyl acetate emulsion, 3kg of polyvinyl alcohol solution, 82kg of deionized water, 0.08kg of polydimethylsiloxane, 1.6kg of superfine silica powder, 0.7kg of lecithin, 0.3kg of sucrose, 3kg of absolute ethyl alcohol and 12kg of functional emulsion; selecting the polyvinyl acetate emulsion prepared in the preparation 1; the polyvinyl alcohol solution prepared in preparation example 2 is selected as the polyvinyl alcohol solution; the lecithin is soybean lecithin; the functional emulsion consists of styrene-acrylic emulsion and sodium carboxymethylcellulose in a weight ratio of 2: 1;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ at 200r/min, cooling to room temperature, adding the residual absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, and continuously stirring for 1min to obtain a lecithin solution; placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution; putting the micro silica gel powder into 9/10 deionized water, and stirring at 150r/min for 15min to obtain water solution;
s3, stirring the polyvinyl acetate emulsion, the polyvinyl alcohol solution and the aqueous solution prepared by the S2 for 10min at the rotating speed of 300r/min to prepare a primary mixed solution;
s4, placing the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, stirring for 3min at the rotating speed of 500r/min, then slowly dripping the lecithin solution prepared in the S2 at the speed of 40 drops/min, and stirring at the speed of 200r/min in the dripping process to prepare a premixed solution;
and S5, putting the polydimethylsiloxane and the functional emulsion into the premixed liquid prepared in the S4, and stirring for 30min at the rotating speed of 380r/min to prepare a finished product of the interface agent.
Example 2: the external wall interface agent is prepared by the following method:
s1, weighing 15kg of polyvinyl acetate emulsion, 2kg of polyvinyl alcohol solution, 78kg of deionized water, 0.05kg of polydimethylsiloxane, 1kg of superfine silica gel powder, 0.5kg of lecithin, 0.1kg of cane sugar, 2kg of absolute ethyl alcohol and 8kg of functional emulsion; selecting the polyvinyl acetate emulsion prepared in the preparation 1; the polyvinyl alcohol solution prepared in preparation example 2 is selected as the polyvinyl alcohol solution; the lecithin is soybean lecithin; the functional emulsion consists of styrene-acrylic emulsion and sodium carboxymethylcellulose in a weight ratio of 2: 1; the absolute ethyl alcohol is 90% absolute ethyl alcohol;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ at 200r/min, cooling to room temperature, adding absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, and continuously stirring for 1min to obtain a lecithin solution; placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution; putting the micro silica gel powder into 9/10 deionized water, and stirring at 150r/min for 15min to obtain water solution;
s3, stirring the polyvinyl acetate emulsion, the polyvinyl alcohol solution and the aqueous solution prepared by the S2 for 10min at the rotating speed of 300r/min to prepare a primary mixed solution;
s4, placing the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, stirring for 3min at the rotating speed of 500r/min, then slowly dripping the lecithin solution prepared in the S2 at the speed of 40 drops/min, and stirring at the speed of 200r/min in the dripping process to prepare a premixed solution;
and S5, putting the polydimethylsiloxane and the functional emulsion into the premixed liquid prepared in the S4, and stirring for 30min at the rotating speed of 380r/min to prepare a finished product of the interface agent.
Example 3: the external wall interface agent is prepared by the following method:
s1, weighing 25kg of polyvinyl acetate emulsion, 4kg of polyvinyl alcohol solution, 86kg of deionized water, 0.1kg of polydimethylsiloxane, 2kg of superfine silica gel powder, 0.8kg of lecithin, 0.5kg of cane sugar, 4kg of absolute ethyl alcohol and 15kg of functional emulsion; selecting the polyvinyl acetate emulsion prepared in the preparation 1; the polyvinyl alcohol solution prepared in preparation example 2 is selected as the polyvinyl alcohol solution; the lecithin is soybean lecithin; the functional emulsion consists of styrene-acrylic emulsion and sodium carboxymethylcellulose in a weight ratio of 2: 1; the absolute ethyl alcohol is 90% absolute ethyl alcohol;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ at 200r/min, cooling to room temperature, adding absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, and continuously stirring for 1min to obtain a lecithin solution; placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution; putting the micro silica gel powder into 9/10 deionized water, and stirring at 150r/min for 15min to obtain water solution;
s3, stirring the polyvinyl acetate emulsion, the polyvinyl alcohol solution and the aqueous solution prepared by the S2 for 10min at the rotating speed of 300r/min to prepare a primary mixed solution;
s4, placing the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, stirring for 3min at the rotating speed of 500r/min, then slowly dripping the lecithin solution prepared in the S2 at the speed of 40 drops/min, and stirring at the speed of 200r/min in the dripping process to prepare a premixed solution;
and S5, putting the polydimethylsiloxane and the functional emulsion into the premixed liquid prepared in the S4, and stirring for 30min at the rotating speed of 380r/min to prepare a finished product of the interface agent.
Example 4: the present embodiment is different from embodiment 1 in that:
s1, the raw materials also comprise 0.8kg of rosin and 0.8kg of sodium alginate;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ under the condition of 200r/min, and cooling to room temperature to obtain cooling liquid;
putting the rosin in the residual absolute ethyl alcohol, and stirring for 5min at 72 ℃ and 300r/min to prepare a rosin solution; putting the rosin solution into the cooling liquid, and continuously stirring for 1min at the rotating speed of 200r/min to prepare a lecithin solution;
placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution;
placing sodium alginate in 3/10 deionized water, and stirring at 350r/min for 8min to obtain sodium alginate solution;
putting the micro silica gel powder into 6/10 deionized water, stirring at 150r/min for 15min, adding sodium alginate solution, and stirring for 2min to obtain water solution.
Example 5: the present embodiment is different from embodiment 1 in that:
s1, the raw materials also comprise 0.5kg of rosin and 0.5kg of sodium alginate;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ under the condition of 200r/min, and cooling to room temperature to obtain cooling liquid;
putting the rosin in the residual absolute ethyl alcohol, and stirring for 5min at 72 ℃ and 300r/min to prepare a rosin solution; putting the rosin solution into the cooling liquid, and continuously stirring for 1min at the rotating speed of 200r/min to prepare a lecithin solution;
placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution;
placing sodium alginate in 3/10 deionized water, and stirring at 350r/min for 8min to obtain sodium alginate solution;
putting the micro silica gel powder into 6/10 deionized water, stirring at 150r/min for 15min, adding sodium alginate solution, and stirring for 2min to obtain water solution.
Example 6: the present embodiment is different from embodiment 1 in that:
s1, the raw materials also comprise 1kg of rosin and 1kg of sodium alginate;
s2, placing lecithin in absolute ethyl alcohol with the total absolute ethyl alcohol amount of 1/2, stirring for 8min at 75 ℃ under the condition of 200r/min, and cooling to room temperature to obtain cooling liquid;
putting the rosin in the residual absolute ethyl alcohol, and stirring for 5min at 72 ℃ and 300r/min to prepare a rosin solution; putting the rosin solution into the cooling liquid, and continuously stirring for 1min at the rotating speed of 200r/min to prepare a lecithin solution;
placing sucrose in 1/10 deionized water, and stirring at 70 deg.C and 500r/min for 5min to obtain sucrose solution;
placing sodium alginate in 3/10 deionized water, and stirring at 350r/min for 8min to obtain sodium alginate solution;
putting the micro silica gel powder into 6/10 deionized water, stirring at 150r/min for 15min, adding sodium alginate solution, and stirring for 2min to obtain water solution.
Comparative example
Comparative example 1: the difference between this comparative example and example 4 is that no aerosil, lecithin, absolute ethanol was added to the raw materials.
Comparative example 2: the difference between this comparative example and example 4 is that no aerosil, sucrose, lecithin was added to the raw materials.
Comparative example 3: the difference between the comparative example and the example 4 is that the raw materials are not added with the superfine silica gel powder, lecithin and sodium alginate.
Comparative example 4: the difference between the comparative example and example 4 is that no styrene-acrylic emulsion, sodium carboxymethylcellulose and rosin are added to the raw materials.
Comparative example 5: this comparative example differs from example 4 in that:
s4, placing the sucrose solution prepared in the S2 into the primary mixed liquid prepared in the S3, stirring for 3min at the rotating speed of 500r/min, then adding the lecithin solution prepared in the S2 at one time, and stirring for 8min at the rotating speed of 200r/min to prepare the premixed liquid.
Comparative example 6: this comparative example differs from example 4 in that:
s4, placing the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, stirring for 3min at the rotating speed of 500r/min, then slowly dripping the lecithin solution prepared in the S2 at the speed of 40 drops/min, and continuously stirring at the speed of 500r/min in the dripping process to prepare the premixed solution.
Performance test
1. Exterior wall interface agent waterproof performance test
Preparing external wall interface agents by adopting the preparation methods of examples 1-6 and comparative examples 1-6 respectively, then mixing the external wall interface agents with water according to the weight ratio of 1:3, after the mixing is finished, coating the interface agents prepared in the examples 1-6 and the comparative examples 1-6 on the building external wall with the square meter of 1, spraying water for 8h, 10h and 12h after the interface agents are coated respectively, wherein the water spraying amount is 20kg, the water spraying pressure is the same, and the adhesive property of the interface agents is detected 13 h after the interface agents are coated; the adhesion of the interface agents prepared in examples 1-6 and comparative examples 1-6 were tested by a pull-open method, which is a test method for the adhesion of coatings in GB/T5210-85.
2. Detection of fluidity of external wall interface agent
Preparing external wall interface agents by adopting the preparation methods of examples 1-6 and comparative examples 1-6 respectively, then mixing the external wall interface agents with water according to the weight ratio of 1:3, after the mixing is finished, uniformly coating the interface agents prepared in the examples 1-6 and the comparative examples 1-6 on the building external wall with the square meter of 1, spraying water to the external wall with the same water spraying amount and the same water spraying pressure, observing the flowing condition of the external wall interface agents in the drying process, and averagely dividing the building external wall with the square meter of 1 into 20 small areas with the square meter of 0.05, wherein the grading grades are as follows:
first-stage: the 0 square meter interfacial agent is flushed and flowed by water, and the phenomenon of uneven coating is not generated.
And (2) second stage: the interface agent with the total area of 0.1-0.4 square meter is flushed to generate flow, so that the thickness of part of the interface agent in the drying process is larger than the thickness of the initial coating of the interface agent, the thickness of part of the interface agent is smaller than the thickness of the initial coating, and the phenomenon of uneven coating occurs.
Third-stage: the interface agent with the total area of 0.4-0.7 square meter is flushed to generate flow, so that the thickness of most positions of the interface agent in the drying process is larger than the thickness of the initial coating of the interface agent, the thickness of most positions is smaller than the thickness of the initial coating, and a large amount of uneven coating occurs.
And (4) fourth stage: the interfacial agent with the total area of 0.7-1.0 square meter is washed to generate flow, the interfacial agent in the drying process has a great amount of halation, and the coating effect of the interfacial agent is poor.
3. Exterior wall body interface agent drying time detection
The preparation methods of examples 1-6 and comparative examples 1-6 were respectively adopted to prepare the external wall interface agent, the external wall interface agent and water were mixed according to the weight ratio of 1:3, and after the mixing, the external wall interface agent was coated on the external wall, and the drying time of the external wall interface agent was recorded.
TABLE 1 exterior wall interface agent performance test table
As can be seen by combining examples 1-3 and examples 4-6 with Table 1, the addition of rosin and sodium alginate to the raw materials of examples 4-6 resulted in improved adhesion of the interfacial agents prepared in examples 4-6 as compared to examples 1-3 and drying times of the interfacial agents prepared in examples 4-6 being shorter than those of the interfacial agents prepared in examples 1-3, as compared to examples 1-3; the rosin and the sodium alginate are matched to enable a waterproof film in the interface agent to have good adhesive property, and meanwhile, the rosin and the sodium alginate are matched to enable the waterproof film to have good ventilation effect; the adhesion force of the interface agents prepared in examples 1-3 and 4-6 is not changed along with the time, which shows that the waterproof layer prepared by matching the micro-powder silica gel and the lecithin can be quickly combined in a short time, so that the rainwater in the external environment is effectively blocked, and the interface agents are prevented from contacting with the rainwater in the drying process, and the rainwater dilutes the interface agents, so that the adhesive property of the interface agents is influenced.
As can be seen by combining examples 4-6 and comparative examples 1-6 and combining Table 1, the raw material of comparative example 1 is not added with aerosil, lecithin and absolute ethyl alcohol, and compared with example 4, the adhesive force of the interface agent prepared in comparative example 1 is reduced compared with example 4, which shows that the aerosil, lecithin and absolute ethyl alcohol are matched, so that the prepared interface agent has good adhesive property; the flow grade of the interface agent prepared in the comparative example 1 is improved compared with that of the interface agent prepared in the example 4, which shows that the waterproof layer is not prepared from the superfine silica gel powder and the lecithin, and when the interface agent is washed by rainwater, the surface of the interface agent can absorb rainwater to flow, so that the coating uniformity of the interface agent is influenced; the drying time of the interface agent prepared in the comparative example 1 is prolonged compared with that of the example 4, which shows that the drying time of the interface agent can be shortened by matching the micro-powder silica gel and the lecithin, so that the interface agent is prevented from being washed by rainwater in the drying process to influence the bonding performance of the interface agent.
Compared with example 4, the adhesive force of the interface agent prepared in comparative example 2 is reduced compared with example 4, and the flow grade of the interface agent prepared in comparative example 2 is increased compared with example 4, so that the particles of the silica micropowder are not easy to agglomerate and are uniformly dispersed by matching the silica micropowder with the sucrose, the water absorption and water retention of the silica micropowder are further enhanced, a water blocking layer with better water resistance is formed by matching the lecithin, a hydrophobic effect is achieved on rainwater, and the influence of rainwater on the adhesive property of the interface agent in the drying and curing process is avoided; the drying time of the interface agent prepared in comparative example 2 was prolonged compared to that of example 4, which indicates that the combination of aerosil, sucrose and lecithin can affect the drying time of the interface agent.
Compared with the example 4, the adhesive force of the interface agent prepared in the comparative example 3 is reduced compared with the example 4, and the flow grade of the interface agent prepared in the comparative example 3 is increased compared with the example 4, so that the sodium alginate, the micro silica gel and the lecithin are matched, the water-blocking effect of the interface agent is better, the formed waterproof membrane has higher toughness, the impact of rainwater can be avoided, and the interface agent is prevented from flowing due to rainwater washing in the drying process; the drying time of the interface agent prepared in the comparative example 3 is prolonged compared with that of the example 4, which shows that the interface agent has better water and effect due to the cooperation of the sodium alginate, the micro-powder silica gel and the lecithin, can absorb more stable water, promotes the emission of water vapor in the drying process of the interface agent, and shortens the drying time of the interface agent.
Compared with the example 4, the adhesive force of the interface agent prepared in the comparative example 4 is reduced compared with the example 4, and the flow grade of the interface agent prepared in the comparative example 4 is increased compared with the example 4, so that the styrene-acrylic emulsion, the sodium carboxymethyl cellulose and the rosin are matched, the formed waterproof film has better bonding effect and adhesive force and higher toughness, and the interface agent in the drying process can be effectively prevented from being washed by external rainwater, so that the bonding property of the interface agent is influenced; the drying time of the interface agent prepared in comparative example 4 is prolonged compared with that of example 4, which shows that the styrene-acrylic emulsion, the sodium carboxymethyl cellulose and the rosin can enable the formed waterproof film to have good waterproof and air-permeable performances, facilitate the emission of water vapor in the drying process of the interface agent and promote the drying of the interface agent.
The interface agent of the comparative example 5 is not slowly added with lecithin solution in the preparation process, compared with the example 4, the adhesive force of the interface agent prepared in the comparative example 5 is reduced compared with the example 4, the flow grade of the interface agent prepared in the comparative example 5 is improved compared with the example 4, and the result shows that when the lecithin solution is added at one time, hydrophilic groups in the lecithin are not easily and uniformly adsorbed in the pore structure of the micro silica gel, so that the uniformity of a hydrophobic layer is influenced, gaps are easily formed in the hydrophobic layer, rainwater is easily contacted with the interface agent from the gaps of the hydrophobic layer, and the adhesive property of the interface agent is influenced; the drying time of the interfacial agent prepared in comparative example 5 was extended compared to that of example 4, indicating that the film forming property affects the drying time after the interfacial agent was applied.
After the lecithin solution is dropwise added in the preparation process of the interface agent in the comparative example 6, stirring is still carried out at the stirring speed of 500r/min, compared with the example 4, the adhesion force of the interface agent prepared in the comparative example 6 is reduced compared with the example 4, and the flow grade of the interface agent prepared in the comparative example 6 is increased compared with the example 4, which shows that after the lecithin solution is dropwise added, the hydrophilic groups of the lecithin are connected with water molecules in pores of the micropowder silica gel, if stirring is carried out at a higher rotating speed, the connecting force between the hydrophilic groups of the lecithin and the micropowder silica gel is easily cut off, so that the formation of a waterproof film is influenced, the waterproof performance of the interface agent is deteriorated, and the bonding performance of the interface agent is influenced; the drying time of the interface agent prepared in comparative example 6 was increased compared to that of example 4, indicating that the performance of the waterproofing membrane easily affects the drying time of the interface agent.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The external wall interface agent is characterized by being prepared from the following raw materials in parts by weight: 15-25 parts of polyvinyl acetate emulsion, 2-4 parts of polyvinyl alcohol solution, 78-86 parts of deionized water, 0.05-0.1 part of defoaming agent, 1-2 parts of superfine silica gel powder, 0.5-0.8 part of lecithin, 0.1-0.5 part of cane sugar, 2-4 parts of absolute ethyl alcohol and 8-15 parts of functional emulsion.
2. The external wall body interface agent according to claim 1, further comprising the following raw materials in parts by weight: 0.5-1 part of rosin and 0.5-1 part of sodium alginate.
3. The external wall body interface agent as claimed in claim 1, wherein the functional emulsion is composed of styrene-acrylic emulsion and sodium carboxymethylcellulose in a weight ratio of 2: 1.
4. The exterior wall body interfacial agent according to claim 1, wherein said defoaming agent is polydimethylsiloxane.
5. The method for preparing the external wall interface agent as claimed in any one of claims 1 to 4, which comprises the following steps:
s1, weighing polyvinyl acetate emulsion, polyvinyl alcohol solution, deionized water, a defoaming agent, superfine silica gel powder, lecithin, sucrose, absolute ethyl alcohol and functional emulsion;
s2, placing lecithin into absolute ethyl alcohol, stirring and dissolving to obtain a lecithin solution; dissolving sucrose in 1/10 deionized water to obtain sucrose solution; putting the micro silica gel powder into the deionized water with the total amount of 9/10 of the deionized water, and stirring to prepare an aqueous solution;
s3, mixing and stirring the polyvinyl acetate emulsion, the polyvinyl alcohol solution and the aqueous solution prepared by the S2 to prepare a primary mixed solution;
s4, placing the lecithin solution and the sucrose solution prepared in the S2 into the primary mixed solution prepared in the S3, and stirring to prepare a premixed solution;
and S5, placing the defoaming agent and the functional emulsion into the premixed liquid prepared in the S4, and stirring to obtain a finished product of the interface agent.
6. The method for preparing an external wall interface agent according to claim 5, wherein lecithin is firstly put into absolute ethanol with a total absolute ethanol amount of 1/2 at 75 ℃ at a speed of 200r/min for 8min in S2, and then cooled to room temperature, and then the remaining absolute ethanol with a total absolute ethanol amount of 1/2 is added, and stirring is continued for 1min to obtain a lecithin solution.
7. The method for preparing the interface agent for the external wall body of claim 5, wherein sucrose in S2 is put in deionized water with a total amount of 1/10 of deionized water, and stirred at 70 ℃ and 500r/min for 5min to obtain a sucrose solution.
8. The method for preparing an external wall interface agent according to claim 5, wherein the sucrose solution is first placed in the initial mixing solution in S4, and then the lecithin solution is added dropwise at a speed of 40 drops/min.
9. The method for preparing the interface agent of the external wall body as claimed in claim 8, wherein the pre-mixed solution is prepared by placing sucrose solution into the initial mixed solution, stirring at 500r/min for 3min, and stirring at 200r/min during the process of adding lecithin solution dropwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003226.9A CN112194938B (en) | 2020-09-22 | 2020-09-22 | External wall interface agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003226.9A CN112194938B (en) | 2020-09-22 | 2020-09-22 | External wall interface agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112194938A true CN112194938A (en) | 2021-01-08 |
| CN112194938B CN112194938B (en) | 2021-10-08 |
Family
ID=74015927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011003226.9A Active CN112194938B (en) | 2020-09-22 | 2020-09-22 | External wall interface agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112194938B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353768A (en) * | 2022-08-24 | 2022-11-18 | 安徽省绩溪旭龙山庄四宝文化有限公司 | Durable color-fast colorful logo and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000239425A (en) * | 1999-02-22 | 2000-09-05 | Asahi Chem Ind Co Ltd | Hydrophilic microporous film and its production |
| CN104231784A (en) * | 2014-08-15 | 2014-12-24 | 昆山珍实复合材料有限公司 | Novel vinyl acetate-acrylate latex paint |
| CN106833177A (en) * | 2017-03-30 | 2017-06-13 | 北京市创新玮地科贸有限公司 | A kind of environment protection type wall covering interfacial agents and preparation method |
| CN108659681A (en) * | 2018-05-21 | 2018-10-16 | 安徽琦家科技股份有限公司 | A kind of environment-friendlyactive active carbon decorative paint |
-
2020
- 2020-09-22 CN CN202011003226.9A patent/CN112194938B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000239425A (en) * | 1999-02-22 | 2000-09-05 | Asahi Chem Ind Co Ltd | Hydrophilic microporous film and its production |
| CN104231784A (en) * | 2014-08-15 | 2014-12-24 | 昆山珍实复合材料有限公司 | Novel vinyl acetate-acrylate latex paint |
| CN106833177A (en) * | 2017-03-30 | 2017-06-13 | 北京市创新玮地科贸有限公司 | A kind of environment protection type wall covering interfacial agents and preparation method |
| CN108659681A (en) * | 2018-05-21 | 2018-10-16 | 安徽琦家科技股份有限公司 | A kind of environment-friendlyactive active carbon decorative paint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115353768A (en) * | 2022-08-24 | 2022-11-18 | 安徽省绩溪旭龙山庄四宝文化有限公司 | Durable color-fast colorful logo and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112194938B (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102010228B (en) | Outer wall sealing impervious interface agent and preparing method thereof | |
| CN110885574B (en) | Water-based inorganic silicate zinc-rich coating and preparation method thereof | |
| CN105236825B (en) | A kind of exterior wall granular pattern texture coating and preparation method thereof | |
| CN112194938B (en) | External wall interface agent and preparation method thereof | |
| CN105418031A (en) | Multifunctional bicomponent ceramic tile gum composition and use method thereof | |
| CN105777009A (en) | Gum for vetrified bricks, preparation method for gum and construction method | |
| EP3221413A1 (en) | Aqueous emulsion, adhesive composition, and aqueous emulsion manufacturing method | |
| CN110317026B (en) | Ceramic tile glue | |
| CN105198311A (en) | Tile adhesive | |
| CN108609951A (en) | Extrusion-injection type building mortar and preparation method thereof and application method | |
| CN106747018B (en) | Well cementation latex cement slurry system and preparation method thereof | |
| CN109456005B (en) | Polymer cement waterproof mortar | |
| CN113881271A (en) | Quick-setting putty powder for buildings and preparation method thereof | |
| CN114560659B (en) | Basal plane treating agent for smooth concrete suitable for aluminum alloy module molding and application thereof | |
| CN112126288B (en) | Interface agent and preparation method thereof | |
| CN104837788A (en) | Additive for hydraulically setting mixtures | |
| JPH04504867A (en) | Flowable, easily soluble dry adhesive powder, method for its production and use thereof | |
| CN116375399A (en) | Dry-mixed thin-layer anti-cracking plastering mortar and preparation method thereof | |
| KR100510324B1 (en) | The Water-soluble Emulsion Adhesive Endowing Excellent Water-resistance and Adhesion for the Ceramic Tiles | |
| CN114456658B (en) | Sealing rubber primer coating liquid and preparation method thereof | |
| CN104446073B (en) | A kind of preparation method of water soluble polymer surface graft modification Machine-made Sand | |
| CN111303806B (en) | Powdery ceramic tile interface treating agent, preparation method and application thereof | |
| CN103738019B (en) | The manufacturing process of building glass adhesive tape | |
| CN102504728B (en) | Building quick-dissolving glue powder | |
| CN115584223B (en) | Single-component all-weather waterproof back adhesive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Meng Kui Inventor after: Zhang Qiangguo Inventor after: Meng Yun Inventor before: Meng Kui Inventor before: Meng Yun |
|
| CB03 | Change of inventor or designer information | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Interfacial agent for exterior wall body and its preparation method Effective date of registration: 20221123 Granted publication date: 20211008 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: HUBAO NEW MATERIAL TECHNOLOGY (SHANGHAI) CO.,LTD. Registration number: Y2022310000332 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231129 Granted publication date: 20211008 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: HUBAO NEW MATERIAL TECHNOLOGY (SHANGHAI) CO.,LTD. Registration number: Y2022310000332 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A type of exterior wall interface agent and its preparation method Effective date of registration: 20231201 Granted publication date: 20211008 Pledgee: Industrial Bank Co.,Ltd. Shanghai Changning sub branch Pledgor: HUBAO NEW MATERIAL TECHNOLOGY (SHANGHAI) CO.,LTD. Registration number: Y2023310000797 |