CN108034347B - Waterproof coating and preparation method thereof, waterproof system containing waterproof coating and construction method - Google Patents
Waterproof coating and preparation method thereof, waterproof system containing waterproof coating and construction method Download PDFInfo
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- CN108034347B CN108034347B CN201711464155.0A CN201711464155A CN108034347B CN 108034347 B CN108034347 B CN 108034347B CN 201711464155 A CN201711464155 A CN 201711464155A CN 108034347 B CN108034347 B CN 108034347B
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- 238000000576 coating method Methods 0.000 title claims abstract description 50
- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title description 6
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000004575 stone Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000012948 isocyanate Substances 0.000 claims abstract description 16
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 150000002148 esters Chemical class 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004078 waterproofing Methods 0.000 claims abstract description 8
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 7
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 7
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 239000002270 dispersing agent Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 239000006004 Quartz sand Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000013638 trimer Substances 0.000 claims description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 5
- 229920000608 Polyaspartic Polymers 0.000 claims description 5
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical group C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000000539 dimer Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 2
- UYFMQPGSLRHGFE-UHFFFAOYSA-N cyclohexylmethylcyclohexane;isocyanic acid Chemical group N=C=O.N=C=O.C1CCCCC1CC1CCCCC1 UYFMQPGSLRHGFE-UHFFFAOYSA-N 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 229920000805 Polyaspartic acid Polymers 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 6
- 108010064470 polyaspartate Proteins 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 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 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 206010053206 Fracture displacement Diseases 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010257 thawing 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
-
- 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
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a waterproof coating, which comprises a component A and a component B in a mass ratio of 1: 3-3: 1, wherein the component A comprises the following components in percentage by weight: aliphatic polyisocyanate and elastic isocyanate prepolymer; the component B comprises the following components in percentage by weight: the paint comprises polyaspartic acid ester resin, toughened and modified polyaspartic acid ester resin, a dispersing agent, a flatting agent, a defoaming agent, pigment and filler and composite functional powder, wherein the composite functional powder is inorganic powder coated by nano titanium dioxide. The invention also discloses a waterproof system and a waterproof construction method. The composite functional powder added into the waterproof coating has the synergistic effect with the elastic isocyanate prepolymer, the toughened modified polyaspartic acid ester resin and the like in the formula, so that the coating has excellent crack following property, alkali resistance and crack resistance; high strength, high elongation, long service life and short construction period, and is suitable for waterproofing artificial landscapes such as plastic-stone rockery and the like.
Description
Technical Field
The invention relates to the technical field of building waterproofing, in particular to a waterproof coating and a preparation method thereof, a waterproof system containing the waterproof coating and a construction method.
Background
In recent years, the theme park construction in China rises rapidly and develops rapidly, and the characteristic theme park construction is a newly rising sun-facing industry in China. A large number of plastic-stone rockeries exist in the construction of theme parks, the structure of the plastic-stone rockeries mainly adopts a reinforced concrete structure, and artistic modeling is realized through molding mortar.
Factors influencing the durability of the plastic-stone rockery can be divided into two major categories, namely internal factors and external factors, wherein the internal factors, namely the microstructure composition and the property in the mortar are mainly represented as a macroscopic performance index of porosity; the external factors are various physical and chemical actions of the service environment of the plastic stone rockery, including abrasion, freeze thawing, erosion and the like. The waterproof coating has the functions of isolating and shielding external media, improving the chemical erosion resistance of the plastic-stone rockery, reducing the repair loss of the plastic-stone rockery, prolonging the service life of the plastic-stone rockery and obviously improving the economic benefit.
The applications with the publication numbers of CN106436928A and CN206457943U are Chinese applications of the applicant, respectively disclose a waterproof construction method and a waterproof structure for a plastic-stone rockery and a waterproof structure for the plastic-stone rockery, and particularly disclose that a carbon (Kabao Leiyin) waterproof paint is used for waterproofing in waterfall areas, river water areas, intermittent springs and other positions of the plastic-stone rockery, and the waterproof layer comprises a waterproof primer layer, a waterproof first layer and a waterproof second layer. The construction process of the waterproof layer is disclosed as follows: after the leveling layer is dried completely, brushing waterproof primer on the surface of the leveling layer, wherein the thickness of the waterproof primer is about 200 mu m; after the waterproof primer is dried completely, coating a waterproof first layer, wherein the thickness of the waterproof first layer is about 150 mu m; and (4) after the waterproof first layer is dried completely, performing waterproof secondary brushing, wherein the thickness of the waterproof second layer is about 150 mu m. However, the waterproof construction process of the waterproof structure is more, the construction period is relatively long, and according to the waterproof construction of the Shanghai Disney plastic stone rockery, the waterproof second-layer construction can be carried out after about 8-12 hours after the waterproof first-layer construction; spraying quartz sand after the waterproof second layer construction, wherein only one layer of waterproof coating with the thickness of about 150 mu m is combined with the quartz sand, and the wrapping capacity is weaker; and the carbon waterproof layer is epoxy thick-paste paint, and is diluted by a diluent during brushing and roller coating construction, and the diluent can bring about a large amount of VOC (volatile organic compounds) emission, so that the construction process is not environment-friendly.
From the structure of the plastic-stone rockery, the waterproof layer is constructed on a cement mortar base layer, a mortar material can generate cracks due to temperature and humidity changes, stress concentration and other factors, when the base layer generates cracks, the waterproof layer can be damaged under the action of tensile stress, and particularly, the rigid waterproof material is easy to crack due to the influence of deformation of the base layer, so that the waterproof function is directly influenced; and the cement mortar material has extremely high alkalinity. In the prior art, the epoxy waterproof layer has poor alkali resistance, and the crack following property test result shows that the damage displacement of a paint film of the epoxy waterproof layer is equal to the fracture displacement, and the crack following property is poor.
Therefore, for the production of artificial landscapes such as plastic-stone rockery, a waterproof coating with excellent alkali resistance, cracking resistance and environmental protection is needed.
Disclosure of Invention
Based on the defects, the invention aims to provide the waterproof coating with excellent crack following performance, alkali resistance and crack resistance, and the composite functional powder added in the waterproof coating has synergistic effect with the elastic isocyanate prepolymer, the toughened modified polyaspartic acid ester resin and the like in the formula, is suitable for being applied to the waterproofing of artificial landscapes such as plastic-stone rockery and the like, is beneficial to prolonging the service life, and has the advantages of high strength, high elongation, environmental protection, low cost and short construction period.
It is another object of the present invention to provide a waterproofing system comprising the above waterproofing coating.
The invention also aims to provide a waterproof construction method.
The above purpose is realized by the following technical scheme:
according to one aspect of the present invention, there is provided a waterproof coating material, characterized in that: comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 3-3: 1, wherein,
the component A comprises the following components in percentage by weight:
0 to 20 percent of aliphatic polyisocyanate,
80-100% of elastic isocyanate prepolymer;
the component B comprises the following components in percentage by weight:
the composite functional powder is inorganic powder coated by nano titanium dioxide.
The waterproof coating material of the present invention is described in more detail below.
In a preferred embodiment of the present invention, the aliphatic polyisocyanate is a monomer of dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, or the like, or a dimer thereof or a trimer thereof.
The elastic isocyanate prepolymer is polyether type isocyanate prepolymer or polyester type isocyanate prepolymer.
The composite functional powder is inorganic powder coated by nano titanium dioxide, and the inorganic powder is at least one of calcium carbonate, barium sulfate, wollastonite powder, silica micropowder, diatomite, kaolin, mica powder, talcum powder and the like.
The leveling agent is at least one of an organic silicon leveling agent and a polyacrylate leveling agent.
The defoaming agent is at least one of an organic silicon defoaming agent and a mineral oil defoaming agent.
The dispersant can be at least one of polycarboxylate, polyphosphate, polyacrylate salt, block copolymer and high molecular polymer.
The pigment and filler can be at least one of titanium dioxide, calcium carbonate, silica micropowder, wollastonite powder, barium sulfate, talcum powder, mica powder, diatomite and kaolin.
In the invention, the preparation method of the waterproof coating comprises the following steps:
1. uniformly mixing the aliphatic polyisocyanate and the elastic isocyanate prepolymer according to the proportion to obtain a component A for later use;
2. uniformly dispersing the polyaspartic ester resin, the toughened and modified polyaspartic ester resin and the auxiliary agent (dispersing agent, leveling agent and defoaming agent) in proportion, adding the pigment and filler (pigment and filler) and the composite functional powder in proportion, and dispersing or grinding at high speed to prepare a component B for later use;
3. and uniformly mixing the prepared component A and the component B according to a proportion to obtain the waterproof coating.
In the step 3, preferably, the component A and the component B are uniformly mixed according to the ratio of NCO equivalent to NH equivalent of 1:1 to obtain the waterproof coating.
According to another aspect of the present invention, there is provided a waterproof system for laying between a plastic-stone rockery packaging layer and a carving layer, the waterproof system comprising: the packaging layer is sequentially covered with a leveling layer, a permeable waterproof primer, the waterproof coating, quartz sand and a protective layer.
Preferably, in the waterproofing system,
the thickness of the leveling layer is 9-11 mm;
the thickness of the permeable waterproof primer is 50-150 mu m, and the permeable primer is a commercially available quick-drying permeable primer;
the thickness of the waterproof coating is 350-450 mu m;
the diameter of the quartz sand is 2 mm-4 mm;
the thickness of the protective layer is 4 mm-6 mm.
According to still another aspect of the present invention, there is provided a waterproof construction method for waterproof construction between a packing layer and a carving layer of a plastic stone rockery using a penetrating waterproof primer and the waterproof paint of the present invention, the waterproof construction method comprising the steps of:
1) base layer treatment: covering a leveling layer 9-11 mm on the plastic stone rockery packaging layer to be suitable for construction of waterproof materials, wherein the surface of the leveling layer is polished to be stable and firm by using flat bricks, and cement gravel and dust which are easy to fall off are cleaned so as not to influence the adhesive force of a coating film;
2) construction of a permeable waterproof primer: after the leveling layer is dried completely, construction of penetrating waterproof primer is carried out, brushing is carried out for 1-3 times, the time interval of single time is about 30min, cross construction is carried out, and the total thickness is 50-150 mu m, wherein the penetrating primer is commercially available quick-drying penetrating primer;
3) construction of waterproof paint: after the permeable waterproof primer is coated for 2 hours, performing waterproof coating construction, and forming a film at one time, wherein the thickness is 350-450 mu m;
4) spraying quartz sand and covering a protective layer: immediately spraying clean and dry quartz sand with the thickness of 2 mm-4 mm on the surface of the waterproof coating after the waterproof coating is constructed, wherein the quartz sand is used for enhancing the bonding strength between the waterproof layer and the waterproof protective layer, and the protective layer with the thickness of 4 mm-6 mm is covered on the surface of the quartz sand.
Compared with the prior art, the invention has the following innovations and beneficial effects:
the composite functional powder formed by coating inorganic powder with a small amount of nano titanium dioxide added into the waterproof coating has a large amount of hydroxide groups on the surface, and the composite functional powder is not only simply dispersed in resin, but also has a synergistic effect with the elastic isocyanate prepolymer, the toughened modified polyaspartic ester resin and the like in the formula, so that the waterproof coating has the beneficial effects of high tensile strength, high elongation and moderate bonding strength of a coating film, can form an effective stripping area, and obviously improves the crack following property of a waterproof material; meanwhile, the using amount of titanium dioxide is reduced, and the cost is reduced; the composite functional powder and the elastic isocyanate prepolymer and the toughened modified polyaspartic acid ester resin in the formula have synergistic effect, so that the surface compactness of a paint film of the waterproof paint is improved, the surface of a protected body is better covered, the water impermeability and the alkali resistance of a waterproof material are improved, and the waterproof paint is more suitable for water prevention of a plastic stone rockery made of cement mortar; after the composite functional powder is added, the ultraviolet ray resistance of the coating of the waterproof coating is enhanced, and the service life is prolonged.
The waterproof coating has high solid content and low viscosity, and the added composite functional powder formed by coating inorganic powder with a small amount of nano titanium dioxide has a synergistic effect with the elastic isocyanate prepolymer, the toughened modified polyaspartic acid ester resin and the like in the formula, so that the viscosity of a coating system is kept low, and during construction, a diluent is not required, so that the content of organic matters volatilized in the use process is reduced, the coating is more environment-friendly, and the body health of construction personnel is facilitated; the one-time film forming is realized, the construction is simple, the construction cost is saved, the curing is fast, the period is short, and the whole waterproof system construction can be completed in one day; the invention sprays quartz sand after forming a film of 350-450 μm at one time, increases the wrapping capacity of the quartz sand, further improves the bonding performance of the waterproof layer and the protective layer mortar, and increases the load capacity of the structure.
The waterproof coating has high strength, high elongation and excellent crack following performance; has excellent alkali resistance, is more suitable for the water prevention of artificial landscapes such as plastic stone rockery and the like, and is beneficial to prolonging the service life.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention:
examples 1 to 3
The formula composition of the waterproof coating of the embodiments 1 to 3 of the invention is shown in table 1:
TABLE 1 composition of waterproof coating formulations of inventive examples 1-3
1, composite functional powder: titanium dioxide coated calcium carbonate; and 2, composite functional powder: titanium dioxide coated barium sulfate; and (3) composite functional powder: the titanium dioxide is coated with the silicon micropowder.
The component A and the component B in the examples 1-3 are respectively mixed according to the formula shown in the table 1 and the preparation method of the invention for standby, the prepared component A and the prepared component B are uniformly mixed according to the ratio of NCO equivalent to NH equivalent of 1:1 for sample preparation, and the performance test is carried out. The performance test mainly refers to GB/T16777-:
table 2 detection results of performance of waterproof coatings of examples 1 to 3 of the present invention
As can be seen from Table 2, the waterproof coating disclosed by the invention has excellent crack following performance, no foaming, wrinkling, obvious discoloration and shedding phenomena exist after 360 hours of coating, and excellent water resistance is realized after 1000 hours of coating. The waterproof coating disclosed by the invention has the advantages of environmental friendliness, short construction period, high tensile strength of a coating film, high elongation, good bonding property between a waterproof layer and a protective layer, long service life and the like in the actual waterproof application of the plastic-stone rockery.
Claims (9)
1. A waterproof material is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is 1: 3-3: 1, wherein,
the component A comprises the following components in percentage by weight:
0 to 20 percent of aliphatic polyisocyanate,
80-100% of elastic isocyanate prepolymer;
the component B comprises the following components in percentage by weight:
the composite functional powder is one of calcium carbonate coated by nano titanium dioxide, barium sulfate coated by nano titanium dioxide and silicon micropowder coated by nano titanium dioxide.
2. The waterproof material according to claim 1, wherein the aliphatic polyisocyanate is a monomer, a dimer or a trimer,
the monomer is dicyclohexyl methane diisocyanate monomer or hexamethylene diisocyanate monomer;
the dimer is dicyclohexylmethane diisocyanate dimer, hexamethylene diisocyanate dimer or a dimer formed by combining dicyclohexylmethane diisocyanate and hexamethylene diisocyanate;
the trimer is dicyclohexylmethane diisocyanate trimer, hexamethylene diisocyanate trimer or a trimer combining dicyclohexylmethane diisocyanate and hexamethylene diisocyanate;
the elastic isocyanate prepolymer is polyether type isocyanate prepolymer or polyester type isocyanate prepolymer.
3. The waterproof material according to claim 1, wherein the leveling agent is at least one of an organosilicon leveling agent and a polyacrylate leveling agent.
4. The waterproof material according to claim 1, wherein the defoaming agent is at least one of a silicone defoaming agent and a mineral oil defoaming agent.
5. The waterproof material according to claim 1, wherein the ratio of NCO equivalent to NH equivalent in the A component and the B component is 1: 1.
6. A method for preparing the waterproof material according to any one of claims 1 to 5, comprising the steps of:
s1, uniformly mixing the aliphatic polyisocyanate and the elastic isocyanate prepolymer according to the proportion to obtain a component A for later use;
s2, uniformly dispersing the polyaspartic ester resin, the toughened and modified polyaspartic ester resin, the dispersing agent, the flatting agent and the defoaming agent in proportion, adding the pigment, the filler and the composite functional powder in proportion, and dispersing or grinding to prepare a component B for later use;
s3, uniformly mixing the prepared component A and the component B according to the proportion to obtain the waterproof coating.
7. The utility model provides a waterproof system lays and moulds between stone rockery packaging layer and the sculpture layer, its characterized in that, this waterproof system includes: a leveling layer, a permeable waterproof primer, the waterproof paint according to any one of claims 1 to 5, quartz sand and a protective layer sequentially covering the encapsulation layer.
8. The waterproofing system according to claim 7,
the thickness of the leveling layer is 9-11 mm;
the thickness of the permeable waterproof primer is 50-150 mu m;
the thickness of the waterproof coating is 350-450 mu m;
the diameter of the quartz sand is 2 mm-4 mm;
the thickness of the protective layer is 4 mm-6 mm.
9. A waterproof construction method characterized in that waterproof construction is performed between a plastic stone rockery packaging layer and a carving layer using a penetration type waterproof primer and the waterproof coating material of any one of claims 1 to 5, the method comprising the steps of:
base layer treatment: covering a leveling layer of 9-11 mm on the packaging layer;
construction of a permeable waterproof primer: after the leveling layer is dried thoroughly, brushing 1-3 times of penetration type waterproof primer, wherein the interval time of single time is 30min, and the total thickness is 50-150 μm;
construction of waterproof paint: after the permeable waterproof primer is coated for 2 hours, performing waterproof coating construction, and forming a film at one time, wherein the thickness is 350-450 mu m;
spraying quartz sand and covering a protective layer: after the waterproof coating is constructed, immediately spraying quartz sand with the diameter of 2-4 mm on the surface, and covering a protective layer on the quartz sand surface.
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| CN106609108B (en) * | 2015-10-26 | 2019-06-14 | 中国京冶工程技术有限公司 | A kind of preparation method of water-repellent paint |
| CN106590048A (en) * | 2016-10-20 | 2017-04-26 | 青阳县永诚钙业有限责任公司 | Nano-titanium-dioxide-coated modified calcium carbonate powder and preparation method thereof |
| CN106436928A (en) * | 2016-11-16 | 2017-02-22 | 中冶建筑研究总院有限公司 | Waterproof construction method for plastic stone rockery and waterproof structure |
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