CN116426173A - Self-leveling permeable crystallization waterproof coating and application thereof - Google Patents
Self-leveling permeable crystallization waterproof coating and application thereof Download PDFInfo
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- CN116426173A CN116426173A CN202310473717.7A CN202310473717A CN116426173A CN 116426173 A CN116426173 A CN 116426173A CN 202310473717 A CN202310473717 A CN 202310473717A CN 116426173 A CN116426173 A CN 116426173A
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- polyvinyl alcohol
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- 238000000576 coating method Methods 0.000 title claims abstract description 54
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 238000002425 crystallisation Methods 0.000 title claims abstract description 23
- 230000008025 crystallization Effects 0.000 title claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 40
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 14
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011975 tartaric acid Substances 0.000 claims abstract description 9
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims description 14
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 14
- 239000006004 Quartz sand Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000003973 paint Substances 0.000 claims description 7
- 238000006136 alcoholysis reaction Methods 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 239000003755 preservative agent Substances 0.000 claims description 6
- 230000002335 preservative effect Effects 0.000 claims description 6
- 229910021487 silica fume Inorganic materials 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000005871 repellent Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005498 polishing Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- -1 polysiloxanes Polymers 0.000 description 5
- 239000013530 defoamer Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VUWCWMOCWKCZTA-UHFFFAOYSA-N 1,2-thiazol-4-one Chemical class O=C1CSN=C1 VUWCWMOCWKCZTA-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
-
- 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
- C09D129/00—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 alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a self-leveling penetrating crystallization waterproof coating and application thereof, wherein the waterproof coating comprises a component A and a component B, the component A comprises water and polyvinyl alcohol, the component B comprises a base material and active crystallization chemical substances, the polyvinyl alcohol in the component A is 10-20% by mass percent, the component A does not contain other film forming resins except the polyvinyl alcohol, and the component B also comprises 0.1-0.8% of tartaric acid; the waterproof coating can independently complete full penetration of active crystalline substances without maintenance procedures through self-locking water, can not only improve the waterproof performance of a concrete base layer, but also form a waterproof layer of the waterproof coating, can seal a concrete and external ventilation channel, prevent the generation of construction bubbles of waterproof or decorative coating in a next pass, has excellent self-leveling performance, can easily realize leveling function on a concrete foundation, can directly pave waterproof coiled materials on the concrete foundation, and does not need to carry out operations such as polishing leveling and the like additionally.
Description
Technical Field
The invention relates to the technical field of waterproof materials, in particular to a self-leveling permeable crystalline waterproof coating and application thereof.
Background
The cement-base permeable crystalline waterproof paint is prepared with cement, quartz sand, etc. as base material and through mixing with active chemical matter to prepare into slurry, painting on the base surface of cement concrete structure, curing to form rigid adhering coating, and the active chemical matter in the coating permeates into the concrete through water permeating carrier to catalyze silicate to produce water insoluble crystal and fill and block capillary pores and fine cracks. However, at least some of the following problems exist with current penetrating crystalline waterproof coatings after painting:
firstly, a coating formed by brushing is easy to pulverize, on one hand, active crystalline substances cannot fully permeate into a concrete base layer, the concrete base layer is not compact, more pores exist, the risk of leakage exists, and meanwhile, residual gas in the pores is easy to cause the generation of bubbles in the next waterproof or decorative coating construction; on the other hand, the coated coating cannot form a waterproof function, and the waterproof function can be generated only by attaching a concrete material in a foundation structure;
secondly, additional curing is needed after the coating is formed by brushing (usually, the purpose of curing is to provide enough time and supplement carrier water to enable active crystalline substances to fully permeate into a concrete base layer), if the curing is not performed, the next procedure such as laying a waterproof coiled material is directly performed, after the waterproof coiled material is covered, the coating on the lower layer is difficult to acquire additional water, the existing coating is easy to lose water powdering, and the active crystalline substances cannot fully permeate into the concrete base layer due to the lack of the carrier, so that the existing permeable crystalline waterproof coating basically needs to be cured, and the construction period is longer;
thirdly, after curing, the coating formed by the existing coating is required to be subjected to the next procedure such as laying a waterproof coiled material, and leveling treatment is required, otherwise, gaps are formed between the waterproof coiled material and the coating due to insufficient flatness, and water is led to flow.
Disclosure of Invention
The invention aims to overcome one or more defects in the prior art, and provides an improved permeable crystallization waterproof coating, which not only can realize the full permeation of active crystalline substances independently without maintenance procedures through self-locking water, but also can form a waterproof layer of the waterproof coating, can seal a concrete and external ventilation channel, prevent the generation of construction bubbles of a waterproof or decorative coating at the next stage, has excellent self-leveling performance, can easily realize a leveling function on a concrete foundation, is convenient for the application and construction of other materials, can directly pave waterproof coiled materials, and does not need to carry out operations such as polishing leveling and the like.
The invention also provides an application of the permeable crystallization waterproof coating in preparing a waterproof coating on a concrete base layer.
In order to achieve the above purpose, the invention adopts a technical scheme that:
a self-leveling, penetrating, crystallizing, water-resistant coating comprising a component a and a component B, the component a comprising water and the component B comprising a binder, an active crystallization chemical, wherein: the component A also comprises 10-20% of polyvinyl alcohol (PVA) by mass percent, and the component A does not contain other film-forming resins except the polyvinyl alcohol;
the component B also comprises 0.1 to 0.8 percent of tartaric acid by mass percent.
According to some preferred aspects of the invention, the polyvinyl alcohol in the component A accounts for 15% -20% by mass; the tartaric acid in the component B accounts for 0.2 to 0.6 percent by mass percent.
According to some preferred aspects of the invention, the polyvinyl alcohol has a degree of polymerization of 400 to 2000 and an alcoholysis degree of greater than 70%.
According to some preferred aspects of the invention, the polyvinyl alcohol is composed of a first polyvinyl alcohol and a second polyvinyl alcohol, the mass ratio of the first polyvinyl alcohol to the second polyvinyl alcohol is 0.8-2:1, the polymerization degree of the first polyvinyl alcohol is 1500-2000, and the alcoholysis degree is 75% -95%; the polymerization degree of the second polyvinyl alcohol is 500-800, and the alcoholysis degree is 98% -100%.
According to some preferred aspects of the present invention, the active crystallization chemistry is composed of 1000-1500 mesh metakaolin, 3500-4500 mesh metakaolin, 600-1000 mesh silica fume, the mass ratio of the 1000-1500 mesh metakaolin, 3500-4500 mesh metakaolin, 600-1000 mesh silica fume is 2.5-3.5:0.6-1.2:1.
According to some preferred aspects of the invention, the feed mass ratio of the component A to the component B is 1:0.6-1.
According to some preferred aspects of the present invention, the component A comprises 10-20% of polyvinyl alcohol, 78-90% of water, 0-1% of defoamer and 0-1% of preservative in percentage by mass.
Further, the component A comprises 15-20% of polyvinyl alcohol, 78-84% of water, 0.05-1% of defoamer and 0.05-1% of preservative in percentage by mass.
In some embodiments of the invention, the defoamer comprises: one or more of mineral oils, polyethers and polysiloxanes.
In some embodiments of the invention, the preservative comprises: isothiazolinones, substituted aromatic hydrocarbons, and organic amines.
According to some preferred aspects of the invention, the binder comprises cement, quartz sand;
the component B comprises 30-35% of cement, 30-50% of quartz sand, 15-35% of active crystallization chemical substances, 0.1-0.8% of tartaric acid, 0.1-0.25% of polycarboxylate water reducer and 0.05-0.2% of bentonite by mass percent.
In some embodiments of the invention, the polycarboxylate water reducer comprises: one or two of basf 2651F and kcal 325C.
The invention provides another technical scheme that: the application of the self-leveling permeable crystallization waterproof coating in preparing a waterproof coating on a concrete basal plane is adopted.
According to some preferred aspects of the present invention, when the self-leveling permeable crystalline waterproof coating material is applied on a concrete base surface to form a waterproof coating layer, a curing process and a leveling process are omitted, and the process of coating waterproof coiled materials is directly performed.
The invention provides another technical scheme that: the preparation method of the self-leveling permeable crystallization waterproof coating comprises the following steps:
preparation of component A: uniformly mixing the components in the component A to obtain the composition;
preparation of component B: uniformly mixing the components in the component B to obtain the composition;
and mixing the component A and the component B according to the formula proportion to obtain the waterproof coating.
In some embodiments of the invention, during the preparation of component A, each component in component A is weighed according to the formula, added into a temperature-controlled stirring kettle, and stirred for 40-60min at 600-1000rpm of a stirrer at a water temperature of 85-95 ℃.
In some embodiments of the invention, in the process of preparing the component B, weighing each component in the component B according to a formula, sequentially adding 40% -60% of cement, 40% -60% of quartz sand and 40% -60% of 1200 mesh metakaolin into a horizontal dry powder mortar mixer, then adding other components except cement, quartz sand and 1200 mesh metakaolin, continuously stirring, and then adding the rest cement, the rest quartz sand and the rest 1200 mesh metakaolin, and uniformly stirring to obtain the cement-mortar composite.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the inventor of the invention provides a waterproof coating material which solves the problems that the existing waterproof coating material is easy to pulverize, needs to be maintained independently, and the formed coating layer needs to be polished and leveled additionally based on the problems of the existing waterproof coating material, innovatively takes polyvinyl alcohol as the film forming resin of the component A independently, controls the addition amount of the film forming resin, and simultaneously adds tartaric acid into the component B, so that the waterproof coating material has good self-leveling property and self-water locking function, and prevents active crystallization chemical substances from lacking water channels to permeate modified base concrete after no water sprinkling maintenance. And the polyvinyl alcohol is used as a film forming substance and can form a water retention channel, so that the function of permeable crystallization without maintenance is realized. Meanwhile, a structural layer with a certain mechanical strength is provided, a concrete and external ventilation channel is sealed, and the generation of construction bubbles of waterproof or decorative coating on a lower channel is prevented; in addition, the advantage that self-leveling performance is good can also make waterproof coating easily realize the function of making level to concrete foundation, makes things convenient for the application construction of other materials of follow-up, for example can directly carry out waterproofing membrane's laying, need not to additionally carry out operations such as make level of polishing.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments; it should be understood that these embodiments are provided to illustrate the basic principles, main features and advantages of the present invention, and that the present invention is not limited by the scope of the following embodiments; the implementation conditions employed in the examples may be further adjusted according to specific requirements, and the implementation conditions not specified are generally those in routine experiments.
All starting materials are commercially available or prepared by methods conventional in the art, not specifically described in the examples below.
Example 1
The self-leveling penetrating crystallization waterproof coating comprises a component A and a component B, wherein the feeding mass ratio of the component A to the component B is 1:0.6, and the specific raw material formula is shown in the following table 1.
TABLE 1
The preparation method of the self-leveling permeable crystallization waterproof coating comprises the following steps:
preparation of component A: weighing each component in the component A, adding the components into a temperature-controlled stirring kettle, and stirring at 1000rpm of a stirrer for 60min at the water temperature of 90 ℃ to obtain the composite material;
preparation of component B: weighing each component in the component B, sequentially adding 50% of cement, 50% of quartz sand and 50% of 1200 mesh metakaolin into a horizontal dry powder mortar stirrer, then adding other components except cement, quartz sand and 1200 mesh metakaolin, continuously stirring, then adding the rest cement, the rest quartz sand and the rest 1200 mesh metakaolin, and uniformly stirring and mixing to obtain the cement-silica-alumina composite material;
the component A and the component B are mixed according to the formula proportion to obtain the horizontal penetration crystallization waterproof coating.
Example 2
The present example provides a self-leveling penetrating crystallization waterproof coating, which comprises a component A and a component B, wherein the feeding mass ratio of the component A to the component B is 1:0.8, and the specific raw material formula is shown in the following table 2.
TABLE 2
The preparation method is the same as in example 1.
Example 3
The present example provides a self-leveling penetrating crystallization waterproof coating, which comprises a component A and a component B, wherein the feeding mass ratio of the component A to the component B is 1:1.0, and the specific raw material formula is shown in the following table 3.
TABLE 3 Table 3
The preparation method is the same as in example 1.
Comparative example 1
Substantially the same as in example 1, the only difference is that: in component A, "polyvinyl alcohol" is replaced by acrylic ester with the same mass percent.
Comparative example 2
Substantially the same as in example 1, the only difference is that: in the component A, the ' 4% of PVA-1788 and the ' 5% of PVA BP-0599 ' are replaced by 9% of acrylic ester, namely after adjustment, in the component A, the PVA-1788% of PVA, the BP-0599% of PVA, the 9% of acrylic ester, the 81.5% of water, the 0.3% of defoaming agent and the 0.2% of preservative are replaced together.
Comparative example 3
Substantially the same as in example 1, the only difference is that: in the component A, the dosage of polyvinyl alcohol is reduced, the mass percentage of the polyvinyl alcohol in the component A is controlled to be 3 percent, and the dosage of water is correspondingly increased; after adjustment, polyvinyl alcohol PVA-1788%, polyvinyl alcohol BP-0599%, water 96.5%, defoamer 0.3% and preservative 0.2%.
Comparative example 4
Substantially the same as in example 1, the only difference is that: in the component B, the tartaric acid is replaced by citric acid with the same mass percent.
Comparative example 5
Substantially the same as in example 1, the only difference is that: the entire component a was replaced with water.
Performance testing
1. Performance tests are carried out on the examples 1-3 and the comparative examples 1-5, the test method is carried out according to the fluidity index of the Standard JC/T985-2017 cement-based self-leveling mortar for the ground, and the judgment of the broken form is carried out according to the performance test method in the Standard of the Cement-based permeable crystalline waterproof Material of GB 1845-2012; the powdering judgment is carried out according to the condition that the coating film is dried and fixed for 2-3 days and is lightly smeared with fingers, and whether powdering and powder dropping occur is observed; and the water locking performance is judged according to the dry base surface test, and the adhesive strength is high after 7 days. See table 4 for specific results.
TABLE 4 Table 4
From the above, the addition of the acrylate resin in the component A has a large influence on secondary impermeability, so that osmotic crystallization is hindered, and the PVA content has a large influence on water locking performance and impermeability, and also has a significant influence on self-leveling performance; comparative example 5 in comparison with example 1, the entire a component was replaced with water, and the delamination phenomenon occurred.
2. The waterproof coating materials prepared in the proportions of 1:0.6, 1:0.8 and 1:1 in the above example 1 were subjected to the following performance tests (dry environment preparation and curing) with specific results shown in Table 5.
TABLE 5
| Example 1-1 | Examples 1 to 2 | Examples 1 to 3 | |
| A:B | 1:0.6 | 1:0.8 | 1:1 |
| Initial fluidity/mm | 156 | 150 | 145 |
| 20min fluidity/mm | 148 | 141 | 134 |
| Fracture resistance/MPa | 5.7 | 5.6 | 5.6 |
| compression/MPa resistance | 23.4 | 23.7 | 24.0 |
| Wet-base bond strength/MPa | 1.4 | 1.32 | 1.28 |
| Coated permeation resistant pressure ratio/% | 271.4 | 284.3 | 285.1 |
| Barrier pressure ratio/% | 210.4 | 190.4 | 186 |
| Coated secondary impervious/MPa | 1.0 | 1.0 | 0.90 |
| Whether or not to pulverize | Whether or not | Whether or not | Whether or not |
As can be seen from the above, with the increase of the addition proportion of the component B, the influence on the self-leveling property is smaller, and the seepage-resistant pressure ratio of the coating of the osmotic crystallization is improved.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
Claims (10)
1. A self-leveling, penetrating, crystallizing, water-resistant coating comprising a component a and a component B, the component a comprising water, the component B comprising a binder, an active crystallization chemical, characterized in that:
the component A also comprises 10-20% of polyvinyl alcohol by mass percent, and the component A does not contain other film forming resins except the polyvinyl alcohol;
the component B also comprises 0.1 to 0.8 percent of tartaric acid by mass percent.
2. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the polyvinyl alcohol in the component A accounts for 15-20% by mass percent; the tartaric acid in the component B accounts for 0.2 to 0.6 percent by mass percent.
3. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the polymerization degree of the polyvinyl alcohol is 400-2000, and the alcoholysis degree is more than 70%.
4. A self-leveling, osmotically crystalline, water-resistant coating according to claim 1 or 3, characterized in that: the polyvinyl alcohol consists of first polyvinyl alcohol and second polyvinyl alcohol, the feeding mass ratio of the first polyvinyl alcohol to the second polyvinyl alcohol is 0.8-2:1, the polymerization degree of the first polyvinyl alcohol is 1500-2000, and the alcoholysis degree is 75% -95%; the polymerization degree of the second polyvinyl alcohol is 500-800, and the alcoholysis degree is 98% -100%.
5. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the active crystallization chemical substance consists of 1000-1500 mesh metakaolin, 3500-4500 mesh metakaolin and 600-1000 mesh silica fume, wherein the mass ratio of the 1000-1500 mesh metakaolin to the 3500-4500 mesh metakaolin to the 600-1000 mesh silica fume is 2.5-3.5:0.6-1.2:1.
6. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the feeding mass ratio of the component A to the component B is 1:0.6-1.
7. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the component A comprises 10-20% of polyvinyl alcohol, 78-90% of water, 0-1% of defoaming agent and 0-1% of preservative by mass percent.
8. The self-leveling, penetrating and crystallizing waterproof paint as claimed in claim 1, wherein: the base material comprises cement and quartz sand;
the component B comprises 30-35% of cement, 30-50% of quartz sand, 15-35% of active crystallization chemical substances, 0.1-0.8% of tartaric acid, 0.1-0.25% of polycarboxylate water reducer and 0.05-0.2% of bentonite by mass percent.
9. Use of a self-leveling, osmotically crystalline, water-repellent coating according to any one of claims 1 to 8 for the preparation of a water-repellent coating on a concrete base.
10. The use according to claim 9, wherein the step of coating the waterproof roll is directly performed by omitting the curing step and the leveling step after the self-leveling, penetrating and crystallizing waterproof coating according to any one of claims 1 to 8 is applied on the concrete base surface to form a waterproof coating.
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| CN115215618A (en) * | 2022-06-01 | 2022-10-21 | 上海嘉宝莉建筑节能科技有限公司 | External thermal insulation mortar capable of being used at low temperature and preparation method and application thereof |
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| EP0010467A1 (en) * | 1978-09-27 | 1980-04-30 | La Cellulose Du Pin | Polyvinyl alcohol adhesive compositions, their use in glueing paper and paper bags manufactured thereby |
| CN102898107A (en) * | 2012-10-26 | 2013-01-30 | 苏州市姑苏新型建材有限公司 | Concrete healant |
| CN104496540A (en) * | 2014-11-28 | 2015-04-08 | 陶宝进 | Waterproof material |
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