CN116496668B - Polymer cement waterproof paint and application thereof - Google Patents
Polymer cement waterproof paint and application thereof Download PDFInfo
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- CN116496668B CN116496668B CN202310476329.4A CN202310476329A CN116496668B CN 116496668 B CN116496668 B CN 116496668B CN 202310476329 A CN202310476329 A CN 202310476329A CN 116496668 B CN116496668 B CN 116496668B
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- cement
- emulsion
- polyvinyl chloride
- waterproof paint
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- 239000011414 polymer cement Substances 0.000 title claims abstract description 35
- 239000003973 paint Substances 0.000 title claims description 24
- 239000004568 cement Substances 0.000 claims abstract description 88
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 59
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 59
- 239000000839 emulsion Substances 0.000 claims abstract description 57
- 239000004576 sand Substances 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 28
- -1 acrylic ester Chemical class 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 13
- 239000002174 Styrene-butadiene Substances 0.000 claims description 11
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000011115 styrene butadiene Substances 0.000 claims description 11
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 11
- 150000004645 aluminates Chemical class 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 230000009477 glass transition Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000003469 silicate cement Substances 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002844 melting Methods 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000003756 stirring Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 239000002518 antifoaming agent Substances 0.000 description 7
- 239000004831 Hot glue Substances 0.000 description 6
- 239000011398 Portland cement Substances 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229940044172 calcium formate Drugs 0.000 description 5
- 235000019255 calcium formate Nutrition 0.000 description 5
- 239000004281 calcium formate Substances 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 5
- 239000012943 hotmelt Substances 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000003755 preservative agent Substances 0.000 description 5
- 230000002335 preservative effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical compound O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method 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
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a polymer cement waterproof coating and application thereof, wherein the raw materials comprise a first component and a second component, the raw materials of the first component comprise film-forming resin emulsion, the raw materials of the second component comprise first cement, filler and prefabricated cement sand with the particle size of 30-140 meshes, and the raw materials of the prefabricated cement sand comprise a component A and a component B; the component A comprises second cement and polyvinyl chloride particles, and the component B comprises rigid acrylate emulsion; the feeding mass ratio of the second cement to the polyvinyl chloride particles to the rigid acrylic ester in the rigid acrylic ester emulsion is 0.6-3.5:0.05-0.65:1; the waterproof coating can be used as the intermediate transition for the mutual combination of the PVC waterproof coiled material and the concrete structure, not only can be excellently combined with the concrete, but also can be welded with the PVC waterproof coiled material in a hot-melting way, so that the PVC waterproof coiled material and the structural concrete are enabled to form a fully-adhered effect, a self waterproof structure is formed, and the waterproof effect is better.
Description
Technical Field
The invention relates to the technical field of waterproof materials, in particular to a polymer cement waterproof coating and application thereof.
Background
The PVC waterproof coiled material is generally made of elastic plastic PVC high polymer materials, has the characteristics of compact and stable film formation and long service life with strong reliability, and is generally used in building designs with various high protection requirements. However, the PVC waterproof coiled material cannot be adhered to the concrete, and the PVC waterproof coiled material is generally fixed on a concrete structure by anchor nails or hot melt adhesives at present; however, the practice finds that the rivet fixing mode has the defect of water connection, and when the hot melt adhesive is adopted for bonding, the hot melt adhesive has high requirements, and the hot melt adhesive, especially the small molecular hot melt adhesive, has the defect of easy aging and failure.
Disclosure of Invention
The invention aims to overcome one or more defects in the prior art, and provides an improved polymer cement waterproof coating which can be used as an intermediate transition for combining a PVC waterproof coiled material and a concrete structure, can be excellently combined with the concrete, can be welded with the PVC waterproof coiled material through hot melting, further promotes the PVC waterproof coiled material and the structural concrete to form a fully-adhered effect, can form a self waterproof structure, and improves the waterproof effect.
The invention also provides application of the polymer cement waterproof coating in bonding a concrete structure and a PVC waterproof coiled material.
In order to achieve the above purpose, the invention adopts a technical scheme that:
A polymer cement waterproof coating, the raw materials of which comprise a first component and a second component, the raw materials of the first component comprise film-forming resin emulsion, the raw materials of the second component comprise first cement and filler, wherein: the film-forming resin emulsion is elastic resin emulsion, the second component further comprises prefabricated cement sand, and the raw materials of the prefabricated cement sand comprise a component A and a component B;
The component A comprises second cement and polyvinyl chloride particles, and the component B comprises rigid acrylate emulsion;
the feeding mass ratio of the second cement to the polyvinyl chloride particles to the rigid acrylic ester in the rigid acrylic ester emulsion is 0.6-3.5:0.05-0.65:1;
The particle size of the prefabricated cement sand is 30-140 meshes.
According to some preferred aspects of the invention, the solid content of the rigid acrylate emulsion is 30% -80%, and the feeding mass ratio of the component A to the component B is 1.0-2.0:1, preferably 1.2-1.3:1.
According to some preferred aspects of the invention, the ratio of the mass of the second cement, the polyvinyl chloride particles and the rigid acrylate in the rigid acrylate emulsion is 1.5-2.5:0.09-0.5:1.
According to some preferred aspects of the invention, the polyvinyl chloride particles have a particle size of 100-800 mesh, preferably 200-500 mesh.
According to some preferred aspects of the invention, the rigid acrylate emulsion has a glass transition temperature of: -5-10 ℃.
According to some preferred aspects of the invention, the polyvinyl chloride in the polyvinyl chloride particles has a molecular weight of 50000-150000.
Further, the molecular weight of the polyvinyl chloride in the polyvinyl chloride particles is 50000-120000. Further, the molecular weight of the polyvinyl chloride in the polyvinyl chloride particles is 50000-100000.
According to some preferred aspects of the invention, the ratio of the first cement to the precast cement sand is 1:2.0-8.0 by mass.
In some embodiments of the invention, the ratio of the first cement to the preformed cement sand is 1:2.0-4.5 by mass.
In some embodiments of the invention, the ratio of the first cement to the preformed cement sand is 1:4.5-6.0 by mass.
In some embodiments of the invention, the ratio of the first cement to the preformed cement sand is 1:6.0-8.0 by mass.
According to some preferred aspects of the present invention, the first component comprises, in mass%, 95% to 99.95% of the elastic resin emulsion and 0.05% to 5.0% of the first auxiliary agent.
In some embodiments of the present invention, the first auxiliary agent comprises an antifoaming agent, a preservative, etc., in the first component, the antifoaming agent comprises 0-0.5% and the preservative comprises 0.05% -0.3% in terms of mass%.
In some embodiments of the invention, the defoamer is a silicone defoamer and/or a mineral oil defoamer.
In some embodiments of the invention, the preservative is an isothiazolinone preservative and/or a benzomilzole ester preservative.
According to some preferred aspects of the present invention, the second component comprises, in mass%, 10% -25% of the first cement, 55% -75% of the prefabricated cement sand, 10% -25% of the filler, and 0.1% -0.25% of the second auxiliary agent.
In some embodiments of the invention, the filler may be metakaolin or the like, and may have a particle size of 800-2000 mesh.
In some embodiments of the present invention, the second auxiliary agent may be a water reducing agent, which may be naphthalene-based, polycarboxylate water reducing agents.
According to some preferred aspects of the invention, the ratio of the first component to the second component is 1:1.3-1.8 by mass.
In some embodiments of the invention, the ratio of the first component to the second component is 1:1.4 to 1.6 by mass.
According to a specific aspect of the invention, the ratio of the first component to the second component is 1:1.5 by mass.
According to some preferred aspects of the present invention, the elastic resin emulsion comprises an elastic acrylate emulsion and an elastic styrene-butadiene emulsion. In the invention, the elastic acrylic ester emulsion and the elastic styrene-butadiene emulsion can endow the whole system with better flexibility and the like, and meanwhile, the elastic styrene-butadiene in the elastic styrene-butadiene emulsion can also play a certain role in hot-melt welding, so that the combination between the PVC waterproof coiled material and the waterproof coating is increased, and the combination strength between the PVC waterproof coiled material and the concrete base layer is further increased.
According to some preferred aspects of the present invention, the first component comprises, in mass percent, 40% -90% of an elastomeric acrylate emulsion and 10% -55% of an elastomeric styrene-butadiene emulsion.
Further, in the first component, the elastic acrylic ester emulsion accounts for 70-90% and the elastic styrene-butadiene emulsion accounts for 10-25% in percentage by mass.
According to some preferred aspects of the invention, the elastic acrylate emulsion has a glass transition temperature of from-20 to 0 ℃.
According to some preferred aspects of the invention, the elastomeric styrene-butadiene emulsion has a glass transition temperature of from-20 to 0 ℃.
In some embodiments of the invention, the solids content of the elastomeric acrylate emulsion is 50% to 65%.
In some embodiments of the invention, the elastomeric styrene-butadiene emulsion has a solids content of 45% to 55%.
According to some preferred aspects of the invention, the first cement is portland cement and/or aluminate cement;
The second cement comprises, by mass, 55% -80% of silicate cement, 5% -25% of polyvinyl chloride particles, 5% -18% of aluminate cement and 0.6% -2.0% of a third auxiliary agent.
In some embodiments of the present invention, the third auxiliary agent may be an antifoaming agent, a coagulant, etc., wherein in the component a, the antifoaming agent accounts for 0.1% to 0.3% and the coagulant accounts for 0.5% to 1.5% in terms of mass percent; further, the defoaming agent can be an organosilicon defoaming agent, a mineral oil defoaming agent or the like, and the coagulant can be an inorganic salt coagulant or an organic substance coagulant.
According to some preferred aspects of the present invention, the method for preparing the precast cement sand comprises:
and (3) uniformly mixing the components in the component A, adding the component B in the uniformly mixing process, granulating, and drying to obtain the prefabricated cement sand.
The invention provides another technical scheme that: the application of the polymer cement waterproof coating to fix the PVC waterproof coiled material on a concrete structure is provided.
Further, in the application process, welding between the PVC waterproof coiled material and a coating formed by the waterproof coating can be realized through hot air welding and other modes, so that the PVC waterproof coiled material is fixed on a concrete structure.
The invention provides another technical scheme that: the preparation method of the polymer cement waterproof paint comprises the following steps:
preparation of the first component: mixing the raw materials in the first component to prepare the first component;
preparation of the second component: preparing prefabricated cement sand, and then mixing the prefabricated cement sand with other raw materials in the first component to prepare a second component;
the method for preparing the prefabricated cement sand comprises the following steps: uniformly mixing the components in the component A, adding the component B in the uniformly mixing process, preparing into particles, and drying to obtain prefabricated cement sand;
And mixing the first component and the second component according to the formula proportion to prepare the polymer cement waterproof coating.
In some embodiments of the present invention, in preparing the prefabricated cement sand, the embodiment of the granulating state includes: and (3) carrying out ultrasonic water removal on the mixture of the component A and the component B.
In the invention, each emulsion takes water as a main solvent and even is the only solvent.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
Based on the defects of easy water stringing, easy ageing and failure of hot melt adhesive and the like existing in the prior art when the PVC waterproof coiled material is fixed on a concrete structure, the inventor innovatively provides a polymer cement waterproof coating which can realize hot-melt welding with the PVC waterproof coiled material and has excellent binding force with a concrete base layer, specifically, the inventor innovatively adds specific prefabricated cement sand into a cement component, the prefabricated cement sand takes hydratable and coagulated cement as a base, granular polyvinyl chloride particles are added, and then rigid acrylic ester emulsion is adopted to blend with the cement sand, on one hand, the adhesion effect of the rigid acrylic ester emulsion is favorable for gathering the rigid acrylic ester emulsion together so as to be favorable for hydrating and coagulating to form granular sand, in the sand, hot-melt polyvinyl chloride polymers can be gathered together, even if the polyvinyl chloride polymers are dispersed in the flexible resin emulsion at a later stage to form a waterproof coating, the polyvinyl chloride particles are also in the whole waterproof system in an island-like form in an aggregation state, and especially the polyvinyl chloride particles in the sand after being melted when the waterproof coiled material is subjected to hot-melt welding, so that the polyvinyl chloride in particular has a uniform and powerful anchoring effect after the polyvinyl chloride is practically realized, and if the whole waterproof system is dispersed, the adhesion effect is greatly reduced; on the other hand, the rigid acrylic ester emulsion also plays a certain auxiliary hot-melt welding role in the system of the invention, so that the bonding strength between the PVC waterproof coiled material and the coating of the waterproof paint is further enhanced; meanwhile, the elastic resin emulsion is selected as the film-forming resin emulsion of the first component, so that the stress shrinkage in the hot melting process is greatly reduced, and the bonding strength after welding is ensured.
In addition, the waterproof coating is used as the intermediate transition for the mutual combination of the PVC waterproof coiled material and the concrete structure, so that the PVC waterproof coiled material can be excellently combined with the concrete, the risk of aging failure is very low, pores with the risk of water channeling after bonding are avoided, the effect of full sticking is formed, the waterproof effect is good, and the PVC waterproof coiled material is beneficial to being applied to building waterproofing with high protection requirements.
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 raw materials of the polymer cement waterproof paint comprise a first component and a second component, the feeding mass ratio of the first component to the second component is 1:1.5, and the specific raw material formula is shown in the following table 1.
TABLE 1
Wherein the raw materials of the prefabricated cement sand comprise a component A and a component B, and the feeding mass ratio of the component A to the component B is 1.2:1;
The component A comprises the following components in percentage by mass:
portland cement (PO 42.5 gray cement, commercially available from conch under the trade designation PO 425) 80%,
Polyvinyl chloride particles (molecular weight 62800, available from Yinlite, trade name P450, particle size 300 mesh) 7.3%,
Aluminate cement (CA 80 high alumina cement, purchased from sealing melting stock, brand CA 80) 12%,
Defoamers (in particular silicones, available from Ming Ling, germany, trade mark P803) 0.2%,
0.5% Of a setting accelerator (in particular an organic, available from Shuangpeng, suzhou under the trademark calcium formate);
the component B is a rigid acrylic ester emulsion, the solid content is 48%, and the component B is purchased from Badback brand RS-2608;
The prefabricated cement sand is prepared by the following method: adding each component in the component A into a sand forming machine, setting the rotating speed to 2500r/min for mixing and stirring, adding the component B in the mixing process, reducing the rotating speed to 800r/min after stirring for 10min, starting a blower, starting ultrasonic wave for dewatering, continuing stirring for 5min, forming particles, and drying at normal temperature for 28 days to prepare the prefabricated cement sand with the mesh number of 75+/-25 meshes.
The preparation method of the polymer cement waterproof coating comprises the following steps:
Preparation of the first component: adding the raw materials in the first component into a stirring kettle, setting the rotating speed to 1200r/min, stirring for 20min, and uniformly mixing to prepare the first component;
Preparation of the second component: preparing prefabricated cement sand, adding the prefabricated cement sand and other raw materials in the second component into a mortar mixer, setting stirring frequency to 30Hz, and stirring for 15min to uniformly mix to prepare the second component;
And mixing the first component and the second component according to the formula proportion, and uniformly stirring by a machine until no particles exist, thereby preparing the polymer cement waterproof coating.
Example 2
The raw materials of the polymer cement waterproof paint comprise a first component and a second component, the feeding mass ratio of the first component to the second component is 1:1.5, and the specific raw material formula is shown in the following table 2.
TABLE 2
Wherein the raw materials of the prefabricated cement sand comprise a component A and a component B, and the feeding mass ratio of the component A to the component B is 1.2:1;
The component A comprises the following components in percentage by mass:
portland cement (PO 42.5 gray cement, commercially available from conch under the trade designation PO 425) 80%,
Polyvinyl chloride particles (molecular weight 62800, available from Yinlite, trade name P450, particle size 300 mesh) 7.3%,
Aluminate cement (CA 80 high alumina cement, purchased from sealing melting stock, brand CA 80) 12%,
Defoamers (in particular silicones, available from Ming Ling, germany, trade mark P803) 0.2%,
0.5% Of a setting accelerator (in particular an organic, available from Shuangpeng, suzhou under the trademark calcium formate);
the component B is a rigid acrylic ester emulsion, the solid content is 48%, and the component B is purchased from Badback brand RS-2608;
The preparation method of the prefabricated cement sand and the polymer cement waterproof paint are respectively the same as that of the example 1.
Example 3
The raw materials of the polymer cement waterproof paint comprise a first component and a second component, the feeding mass ratio of the first component to the second component is 1:1.5, and the specific raw material formula is shown in the following table 3.
TABLE 3 Table 3
Wherein the raw materials of the prefabricated cement sand comprise a component A and a component B, and the feeding mass ratio of the component A to the component B is 1.2:1;
The component A comprises the following components in percentage by mass:
Portland cement (PO 42.5 gray cement, commercially available from conch under the trade designation PO 425) 73%,
Polyvinyl chloride particles (molecular weight 62800, available from Yinlite, trade name P450, particle size 300 mesh) 14.3%,
Aluminate cement (CA 80 high alumina cement, purchased from sealing melting stock, brand CA 80) 12%,
Defoamers (in particular silicones, available from Ming Ling, germany, trade mark P803) 0.2%,
0.5% Of a setting accelerator (in particular an organic, available from Shuangpeng, suzhou under the trademark calcium formate);
the component B is a rigid acrylic ester emulsion, the solid content is 48%, and the component B is purchased from Badback brand RS-2608;
The preparation method of the prefabricated cement sand and the polymer cement waterproof paint are respectively the same as that of the example 1.
Example 4
The raw materials of the polymer cement waterproof paint comprise a first component and a second component, the feeding mass ratio of the first component to the second component is 1:1.5, and the specific raw material formula is shown in the following table 4.
TABLE 4 Table 4
Wherein the raw materials of the prefabricated cement sand comprise a component A and a component B, and the feeding mass ratio of the component A to the component B is 1.2:1;
The component A comprises the following components in percentage by mass:
portland cement (PO 42.5 gray cement, commercially available from conch under the trade designation PO 425) 80%,
Polyvinyl chloride particles (molecular weight 62800, available from Yinlite, trade name P450, particle size 300 mesh) 7.3%,
Aluminate cement (CA 80 high alumina cement, purchased from sealing melting stock, brand CA 80) 12%,
Defoamers (in particular silicones, available from Ming Ling, germany, trade mark P803) 0.2%,
0.5% Of a setting accelerator (in particular an organic, available from Shuangpeng, suzhou under the trademark calcium formate);
the component B is a rigid acrylic ester emulsion, the solid content is 48%, and the component B is purchased from Badback brand RS-2608;
The preparation method of the prefabricated cement sand and the polymer cement waterproof paint are respectively the same as that of the example 1.
Example 5
The raw materials of the polymer cement waterproof paint comprise a first component and a second component, the feeding mass ratio of the first component to the second component is 1:1.5, and the specific raw material formula is shown in the following table 5.
TABLE 5
Wherein the raw materials of the prefabricated cement sand comprise a component A and a component B, and the feeding mass ratio of the component A to the component B is 1.2:1;
The component A comprises the following components in percentage by mass:
portland cement (PO 42.5 gray cement, commercially available from conch under the trade designation PO 425) 67%,
Polyvinyl chloride particles (molecular weight 62800, available from Yinlite, trade name P450, particle size 300 mesh) 7.3%,
Aluminate cement (CA 80 high alumina cement, purchased from sealing melt, brand CA 80) 25%,
Defoamers (in particular silicones, available from Ming Ling, germany, trade mark P803) 0.2%,
0.5% Of a setting accelerator (in particular an organic, available from Shuangpeng, suzhou under the trademark calcium formate);
the component B is a rigid acrylic ester emulsion, the solid content is 48%, and the component B is purchased from Badback brand RS-2608;
The preparation method of the prefabricated cement sand and the polymer cement waterproof paint are respectively the same as that of the example 1.
Comparative example 1
Substantially the same as in example 1, the only difference is that: the polyvinyl chloride particles are not added into the prefabricated cement sand, and the same amount of polyvinyl chloride particles are added into the first component, so that the content of the elastic acrylic ester emulsion is correspondingly reduced, and the total amount is kept unchanged.
Comparative example 2
Substantially the same as in example 1, the only difference is that: and removing the component B in the prefabricated cement sand, and directly taking each component A in the prefabricated cement sand as a component of the second component, so that the prefabricated cement sand is not prepared and added.
Comparative example 3
Substantially the same as in example 1, the only difference is that: the "rigid acrylate emulsion" in the preformed cement sand was replaced with an equivalent mass of water.
Performance testing
The polymer cement waterproof coatings prepared in examples 1 to 5 and comparative examples 1 to 3 were subjected to the following performance tests, and specific results are shown in Table 6.
Tensile strength, elongation at break, adhesive strength, water impermeability are determined using GB/T23445-2009;
Peel strength after welding with PVC was measured using GB 18173.1-2012.
TABLE 6
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 (12)
1. The polymer cement waterproof coating comprises a first component and a second component, wherein the first component comprises a film-forming resin emulsion, and the second component comprises first cement and a filler, and is characterized in that: the film-forming resin emulsion is elastic resin emulsion, the second component further comprises prefabricated cement sand, and the raw materials of the prefabricated cement sand comprise a component A and a component B;
The component A comprises second cement and polyvinyl chloride particles, and the component B comprises rigid acrylate emulsion;
the feeding mass ratio of the second cement to the polyvinyl chloride particles to the rigid acrylic ester in the rigid acrylic ester emulsion is 0.6-3.5:0.05-0.65:1;
the particle size of the prefabricated cement sand is 30-140 meshes;
the feeding mass ratio of the first cement to the prefabricated cement sand is 1:2.0-8.0, and the feeding mass ratio of the first component to the second component is 1:1.3-1.8.
2. The polymer cement waterproof paint according to claim 1, wherein: the solid content of the rigid acrylic emulsion is 30% -80%, and the feeding mass ratio of the component A to the component B is 1.0-2.0:1.
3. The polymer cement waterproof paint according to claim 2, wherein: the feeding mass ratio of the component A to the component B is 1.2-1.3:1.
4. The polymer cement waterproof paint according to claim 1, wherein: the feeding mass ratio of the second cement to the polyvinyl chloride particles to the rigid acrylic ester in the rigid acrylic ester emulsion is 1.5-2.5:0.09-0.5:1.
5. The polymer cement waterproof paint according to claim 1, wherein: the particle size of the polyvinyl chloride particles is 100-800 meshes.
6. The polymer cement waterproof paint according to claim 5, wherein: the particle size of the polyvinyl chloride particles is 200-500 meshes.
7. The polymer cement waterproof paint according to claim 1, wherein: the glass transition temperature of the rigid acrylate emulsion is: -5-10 ℃; and/or the molecular weight of the polyvinyl chloride in the polyvinyl chloride particles is 50000-150000.
8. The polymer cement waterproof paint according to claim 1, wherein: in the first component, the elastic resin emulsion accounts for 95 to 99.95 percent and the first auxiliary agent accounts for 0.05 to 5.0 percent;
in the second component, 10-25% of first cement, 55-75% of prefabricated cement sand, 10-25% of filler and 0.1-0.25% of second auxiliary agent.
9. The polymer cement waterproof paint according to claim 1 or 8, characterized in that: the elastic resin emulsion comprises elastic acrylic ester emulsion and elastic styrene-butadiene emulsion;
In the first component, 40-90% of elastic acrylic ester emulsion and 10-55% of elastic styrene-butadiene emulsion;
The glass transition temperature of the elastic acrylate emulsion is-20-0 ℃, and the glass transition temperature of the elastic styrene-butadiene emulsion is-20-0 ℃.
10. The polymer cement waterproof paint according to claim 1 or 8, characterized in that: the first cement is silicate cement and/or aluminate cement;
the second cement comprises, by mass, 55% -80% of silicate cement, 5% -25% of polyvinyl chloride particles, 5% -18% of aluminate cement and 0.6% -2.0% of a third auxiliary agent.
11. The polymer cement waterproof paint according to claim 1, wherein: the preparation method of the prefabricated cement sand comprises the following steps:
and (3) uniformly mixing the components in the component A, adding the component B in the uniformly mixing process, granulating, and drying to obtain the prefabricated cement sand.
12. Use of a polymer cement waterproofing paint according to any one of claims 1 to 11 for fixing PVC waterproofing coils to concrete structures.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272652A (en) * | 2018-03-15 | 2019-09-24 | 立邦涂料（中国）有限公司 | A kind of roof waterpoof material |
| CN114921146A (en) * | 2022-06-24 | 2022-08-19 | 江苏凯伦建材股份有限公司 | Light polymer cement waterproof coating and preparation method thereof |
| CN115873435A (en) * | 2022-12-15 | 2023-03-31 | 宏源防水科技集团有限公司 | Polymer cement waterproof coating and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272652A (en) * | 2018-03-15 | 2019-09-24 | 立邦涂料（中国）有限公司 | A kind of roof waterpoof material |
| CN114921146A (en) * | 2022-06-24 | 2022-08-19 | 江苏凯伦建材股份有限公司 | Light polymer cement waterproof coating and preparation method thereof |
| CN115873435A (en) * | 2022-12-15 | 2023-03-31 | 宏源防水科技集团有限公司 | Polymer cement waterproof coating and preparation process thereof |
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