CN105602436A - Environment-friendly waterproof polyurethane coating and preparation method thereof - Google Patents
Environment-friendly waterproof polyurethane coating and preparation method thereof Download PDFInfo
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- 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
- C09D175/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- 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
- C09D7/20—Diluents or solvents
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- 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- 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
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- 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
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses an environment-friendly waterproof polyurethane coating. The polyurethane coating is prepared from the following components in parts by weight: 10-20 parts of diisocyanate, 50-80 parts of polyester polyol, 5-15 parts of dimethylolpropionic acid, 2-5 parts of light calcium carbonate, 1-3 parts of wollastonite in powder, 1.5-2 parts of nano-clay, 0.8-1.5 parts of nano-boron carbide, 8-15 parts of polyacrylamide, 2-3 parts of a latent curing agent, 0.5-1 part of a dispersing agent, 0.5-1 part of a coupling agent, 1-3 parts of a defoaming agent, 0.3-0.8 part of a catalyst, 2-5 parts of a chain extender and 30-40 parts of deionized water. The invention further discloses a preparation method of the environment-friendly waterproof polyurethane coating. The waterproof polyurethane coating is prepared by adopting water as a solvent, does not release toxic substances, is beneficial to environmental protection, and has the advantages of good weather resistance, good water resistance, large elasticity and excellent mechanical performance.
Description
Technical field:
The present invention relates to technical field of coatings, be specifically related to a kind of environment-friendly type waterproof polyurethane and be coated withMaterial.
Background technology:
Polyurethane waterproof material-coating, grouting material, encapsulant and thermal-insulating waterproof materialWith its high resiliency, wearability, caking property, lower temperature resistance, solvent resistance, resistance to ag(e)ing and canThe premium properties such as foaming have obtained swift and violent development. According to rough Statistics, polyurethane high molecule waterproofMaterial accounts for the more than 30% of the total consumption of China's waterproof material at present, especially taking polyurethane water-proof paint asMain.
Polyurethane water-proof paint from the seventies China first start application since, in the ninetiesDeveloped rapidly and extensive use, national chemical building material the ninth five-year plan and 2010 are sent outExhibition planning outline and the Tenth Five-Year Plan (2001-2005) and development planning outline in 2015 are all polyurethane water-proofCoating is classified as and is given priority to kind. But the polyurethane water-proof paint in the 91's is mainly with tarFilled polyurethane and pitch filled polyurethane water-repellent paint are main. These two kinds of polyurethane water-proof paintsDue to liquid additive volatilization, all harmful to environment and construction and user thereof. Just openWhen beginning, adopt the coal tar of cheapness and performance brilliance as filled toughening material, due to its excellencePerformance and relative cheap price, use comparatively extensive. But because coal tar toxicity is larger,Smell is heavier, and in polyurethane waterproof material, a large amount of fillings can bring a series of environmental pollution to askTopic, the Ministry of Construction made restriction in 1998, and progressively forbade that coal tar is at polyurethane water-proofUse in material.
Along with social development and the raising of living standards of the people, people start attaching importance to environmental protection and strongKang Wenti, therefore, the use of these two kinds of polyurethane water-proof paints has just been subject to certain restriction,The polyurethane water-proof paint that makes to have superior function is lack scope for their abilities. What grow up now is mainBe environment-friendly type polyurethane waterproofing paint, it does not use toxic solvent on the one hand, makes on the other hand pre-NCO content free in aggressiveness reduces, and in the situation that taking this two kinds of measures, makes to gatherAmmonia ester water-repellent paint can better use in waterproof field.
It is anti-that Chinese patent (201010545081.5) discloses a kind of environment-friendly type high performance polyurethaneWater paint, it is made up of first component and second component, and first component is by toluene di-isocyanate(TDI), poly-The compositions such as ether N-220, polyethers N-330, polymerization inhibitor and catalyst, second component is by liquid curingThe compositions such as agent, liquid filler, defoamer, dispersant, talcum powder, fine particle calcium carbonate and titanium dioxide. ShouldPolyurethane water-proof paint, has solved existing high performance polyurethane waterproof coating material solid content on the low side and containHave the drawback of doubtful carcinogen, it has surface drying, the time of doing solid work is short, hot strength, fractureThe feature of the excellent combination properties such as percentage elongation, but the compatibility of filler and resin is poor, makes systemThe standby polyurethane water-proof paint poor stability obtaining, film performance is bad.
Summary of the invention:
The object of this invention is to provide a kind of environment-friendly type waterproof polyurethane coating, it adopts water is moltenAgent, without the release of noxious material, is conducive to environmental protection, and its weatherability, water-tolerant,Elasticity is large, good stability, mechanical property excellence.
Another object of the present invention is to provide the preparation method of this environment-friendly type water-repellent paint.
For achieving the above object, the present invention is by the following technical solutions:
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
Vulcabond 10-20 part,
PEPA 50-80 part,
Dihydromethyl propionic acid 5-15 part,
Precipitated calcium carbonate 2-5 part,
Wollastonite in powder 1-3 part,
Nanoclay 1.5-2 part,
Nano boron carbide 0.8-1.5 part,
Polyacrylamide 8-15 part,
Latent curing agent 2-3 part,
Dispersant 0.5-1 part, coupling agent 0.5-1 part,
Defoamer 1-3 part, catalyst 0.3-0.8 part,
Chain extender 2-5 part, deionized water 30-40 part.
As technique scheme preferably, a kind of environment-friendly type waterproof polyurethane coating, with weightPart meter, comprises following component:
15 parts of vulcabond,
75 parts of PEPAs,
8 parts of dihydromethyl propionic acids,
3.5 parts of precipitated calcium carbonates,
2 parts of wollastonites in powder,
1.5 parts of nanoclays,
1.2 parts of nano boron carbides,
10 parts of polyacrylamides,
2.5 parts of latent curing agents,
0.65 part of dispersant, 0.5 part of coupling agent,
2 parts of defoamers, 0.45 part of catalyst,
4 parts of chain extenders, 40 parts of deionized waters.
As technique scheme preferably, described vulcabond is selected from aliphatic two isocyanic acidsEster, aromatic diisocyanate and alicyclic diisocyanate.
As technique scheme preferably, the hydroxyl value of described PEPA is380-400mgKOH/g, acid number≤1.5mgKOH/g, viscosity≤4000mPas.
As technique scheme preferably, the particle size of described wollastonite in powder is 10-20nm.
As technique scheme preferably, described latent curing agent be acetone-ethylenediamine condensation product,One or both mixing in methyl isopropyl Ketone-monoethanolamine condensation product.
As technique scheme preferably, described dispersant is trimethyl silicane alcoxyl base silicic acidOne or more mixing in ester, esters of silicon acis coupling agent, connection boric acid pinacol ester.
As technique scheme preferably, described coupling agent is that titanate coupling agent, silane are evenOne or both mixing in connection agent.
As technique scheme preferably, described catalyst be sulfonation butadiene, tartaric acid,One in salicylic acid, citric acid.
A preparation method for environment-friendly type waterproof polyurethane coating, comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 70-90 DEG C, add catalyst, reaction 2-4h, obtains base polyurethane prepolymer for use asA；
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 70-90 DEG C, reacts 2-5h, then addsDihydromethyl propionic acid and polyacrylamide, reaction 20-50min, adds nanoclay, couplingAgent and nano boron carbide, reaction 1-2h, continues to add wollastonite in powder, latent curing agent, lightweightCalcium carbonate, dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane and is coated withMaterial.
The present invention has following beneficial effect:
(1) to adopt water be solvent in the present invention, and the waterproof polyurethane coating preparing is without poisonousSolvent evaporates, to environment and body harmless;
(2) the present invention, in polyurethane water-proof paint, adds nanoclay and nano boron carbide,Its surface has abundant-OH isoreactivity group, can with performed polymer in the free isocyanic acid that obtainsEster monomer reaction, thus free in coating-NCO content reduced, make to preparePolyurethane coating is nontoxic, is conducive to environmental protection, and it can form stable with resin matrixThree-dimensional net structure, effectively improves the physical properties such as the weatherability, wearability, heat resistance of coatingAnd mechanical property;
(3) the present invention rationally controls the preparation process condition of polyurethane water-proof paint, preparationThe water-repellent paint good stability of understanding, film performance excellence.
Detailed description of the invention:
For a better understanding of the present invention, below by embodiment, the present invention is further described,Embodiment, only for explaining the present invention, can not form any restriction to the present invention.
Embodiment 1
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
10 parts of vulcabond, 50 parts of PEPAs,
5 parts of dihydromethyl propionic acids, 2 parts of precipitated calcium carbonates,
1 part of wollastonite in powder, 1.5 parts of nanoclays,
0.8 part of nano boron carbide,
8 parts of polyacrylamides, 2 parts of latent curing agents,
0.5 part of dispersant, 0.5 part of coupling agent,
1 part of defoamer, 0.3 part of catalyst,
2 parts of chain extenders, 30 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 70 DEG C, add catalyst, reaction 2h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 70 DEG C, reacts 2h, then adds dihydroxyMethylpropanoic acid and polyacrylamide, reaction 20min, adds nanoclay, coupling agent and nanometerBoron carbide, reaction 1h, continues to add wollastonite in powder, latent curing agent, precipitated calcium carbonate, dividesPowder and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
Embodiment 2
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
20 parts of vulcabond, 80 parts of PEPAs,
15 parts of dihydromethyl propionic acids, 5 parts of precipitated calcium carbonates,
3 parts of wollastonites in powder, 2 parts of nanoclays,
1.5 parts of nano boron carbides,
15 parts of polyacrylamides, 3 parts of latent curing agents,
1 part of dispersant, 1 part of coupling agent,
3 parts of defoamers, 0.8 part of catalyst,
5 parts of chain extenders, 40 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 90 DEG C, add catalyst, reaction 4h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 90 DEG C, reacts 5h, then adds dihydroxyMethylpropanoic acid and polyacrylamide, reaction 50min, adds nanoclay, coupling agent and nanometerBoron carbide, reaction 2h, continues to add wollastonite in powder, latent curing agent, precipitated calcium carbonate, dividesPowder and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
Embodiment 3
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
15 parts of vulcabond, 75 parts of PEPAs,
8 parts of dihydromethyl propionic acids, 3.5 parts of precipitated calcium carbonates,
2 parts of wollastonites in powder, 1.5 parts of nanoclays,
1.2 parts of nano boron carbides,
10 parts of polyacrylamides, 2.5 parts of latent curing agents,
0.65 part of dispersant, 0.5 part of coupling agent,
2 parts of defoamers, 0.45 part of catalyst,
4 parts of chain extenders, 40 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 75 DEG C, add catalyst, reaction 2.5h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 75 DEG C, reacts 3h, then adds dihydroxyMethylpropanoic acid and polyacrylamide, reaction 30min, adds nanoclay, coupling agent and nanometerBoron carbide, reaction 1.2h, continue to add wollastonite in powder, latent curing agent, precipitated calcium carbonate,Dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
Embodiment 4
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
12 parts of vulcabond, 60 parts of PEPAs,
7 parts of dihydromethyl propionic acids, 3 parts of precipitated calcium carbonates,
1.5 parts of wollastonites in powder, 1.6 parts of nanoclays,
1.0 parts of nano boron carbides,
10 parts of polyacrylamides, 2.2 parts of latent curing agents,
0.6 part of dispersant, 0.6 part of coupling agent,
1.5 parts of defoamers, 0.4 part of catalyst,
3 parts of chain extenders, 32 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 80 DEG C, add catalyst, reaction 3h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 80 DEG C, reacts 3.5h, then adds twoHydroxymethyl propionic acid and polyacrylamide, reaction 35min, adds nanoclay, coupling agent and receivesRice boron carbide, reaction 1.4h, continue to add wollastonite in powder, latent curing agent, precipitated calcium carbonate,Dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
Embodiment 5
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
14 parts of vulcabond, 70 parts of PEPAs,
9 parts of dihydromethyl propionic acids, 4 parts of precipitated calcium carbonates,
2 parts of wollastonites in powder, 1.7 parts of nanoclays,
1.2 parts of nano boron carbides,
12 parts of polyacrylamides, 2.4 parts of latent curing agents,
0.7 part of dispersant, 0.7 part of coupling agent,
2 parts of defoamers, 0.5 part of catalyst,
4 parts of chain extenders, 34 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 85 DEG C, add catalyst, reaction 3.5h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 85 DEG C, reacts 4h, then adds dihydroxyMethylpropanoic acid and polyacrylamide, reaction 40min, adds nanoclay, coupling agent and nanometerBoron carbide, reaction 1.6h, continue to add wollastonite in powder, latent curing agent, precipitated calcium carbonate,Dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
Embodiment 6
A kind of environment-friendly type waterproof polyurethane coating, in weight portion, comprises following component:
16 parts of vulcabond, 75 parts of PEPAs,
14 parts of dihydromethyl propionic acids, 4.5 parts of precipitated calcium carbonates,
2.5 parts of wollastonites in powder, 1.8 parts of nanoclays,
1.4 parts of nano boron carbides,
14 parts of polyacrylamides, 2.8 parts of latent curing agents,
0.8 part of dispersant, 0.9 part of coupling agent,
2.5 parts of defoamers, 0.7 part of catalyst,
4.5 parts of chain extenders, 38 parts of deionized waters.
Its preparation method comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 90 DEG C, add catalyst, reaction 4h, obtains base polyurethane prepolymer for use as A;
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 70 DEG C, reacts 4.5h, then adds twoHydroxymethyl propionic acid and polyacrylamide, reaction 50min, adds nanoclay, coupling agent and receivesRice boron carbide, reaction 1.8h, continue to add wollastonite in powder, latent curing agent, precipitated calcium carbonate,Dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane coating.
The environment-friendly type waterproof polyurethane coating of below being prepared by the present invention carries out performance test.
By directly Self-leveling film forming in mould of environment-friendly type waterproof polyurethane coating, in order to accelerate itSurface drying and doing solid work the time, point three films, film forming thickness is 1.5 ± 0.2mm. Curing requirementsAccording to GB/T16777-1997.
1, film tensile property is measured
Measure according to standard GB/T/T19250.
The film of completion of cure is cut into the dumb-bell shape I sample that GB/T528 specifies, then uses rulerOn test specimen, pull the parallel lines of two stripe pitch 25mm, and with thickness gauge measure test specimen graticule andThe thickness that two ends are 3, gets its arithmetic mean of instantaneous value as sample thickness, is contained in cupping machine folderBetween tool, between fixture, gauge length is 70mm, extremely disconnected with 500mm/min draw speed tensile test specimenSplit, record the test specimen maximum load in when fracture, and measure now test specimen distance between bench marks from.
2, film water absorption rate is measured
Take a certain amount of glued membrane, under room temperature, be immersed in distilled water, continuous dipping 168h,Each certain hour takes out, and blots fast the glued membrane surface moisture of being with filter paper, weighs immediately.The quality that is absorbed moisture by the glued membrane of unit mass is that water absorption rate P (%) represents.
Test result is as shown in table 1;
Table 1
From table 1, the environment-friendly type water-repellent paint that the present invention prepares, mechanical property is good,Waterproof effect is obvious.
Claims (10)
1. an environment-friendly type waterproof polyurethane coating, is characterized in that, in weight portion, and bagDraw together following component:
Vulcabond 10-20 part,
PEPA 50-80 part,
Dihydromethyl propionic acid 5-15 part,
Precipitated calcium carbonate 2-5 part,
Wollastonite in powder 1-3 part,
Nanoclay 1.5-2 part,
Nano boron carbide 0.8-1.5 part,
Polyacrylamide 8-15 part,
Latent curing agent 2-3 part,
Dispersant 0.5-1 part, coupling agent 0.5-1 part,
Defoamer 1-3 part, catalyst 0.3-0.8 part,
Chain extender 2-5 part, deionized water 30-40 part.
2. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, in weight portion, comprise following component:
15 parts of vulcabond,
75 parts of PEPAs,
8 parts of dihydromethyl propionic acids,
3.5 parts of precipitated calcium carbonates,
2 parts of wollastonites in powder,
1.5 parts of nanoclays,
1.2 parts of nano boron carbides,
10 parts of polyacrylamides,
2.5 parts of latent curing agents,
0.65 part of dispersant, 0.5 part of coupling agent,
2 parts of defoamers, 0.45 part of catalyst,
4 parts of chain extenders, 40 parts of deionized waters.
3. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, described vulcabond is selected from aliphatic diisocyanate, aromatic diisocyanate and fatRing (cyclo) aliphatic diisocyanates.
4. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, the hydroxyl value of described PEPA is 380-400mgKOH/g, acid number≤1.5mgKOH/g,Viscosity≤4000mPas.
5. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, the particle size of described wollastonite in powder is 10-20nm.
6. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, described latent curing agent is acetone-ethylenediamine condensation product, the condensation of methyl isopropyl Ketone-monoethanolamineOne or both mixing in thing.
7. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, described dispersant is trimethyl silicane alcoxyl base esters of silicon acis, esters of silicon acis coupling agent, connection boric acid frequencyOne or more mixing in that alcohol ester.
8. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, described coupling agent is one or both mixing in titanate coupling agent, silane coupler.
9. a kind of environment-friendly type waterproof polyurethane coating as claimed in claim 1, its feature existsIn, described catalyst is the one in sulfonation butadiene, tartaric acid, salicylic acid, citric acid.
10. a kind of environment-friendly type waterproof polyurethane coating as described in as arbitrary in claim 1 to 9Preparation method, is characterized in that, comprises the following steps:
(1) PEPA and vulcabond are joined in there-necked flask to mix and blendEvenly, be warming up to 70-90 DEG C, add catalyst, reaction 2-4h, obtains base polyurethane prepolymer for use asA；
(2) in the base polyurethane prepolymer for use as A obtaining to step (1), add chain extender, polyester manyUnit's alcohol and deionized water, be uniformly mixed, and at 70-90 DEG C, reacts 2-5h, then addsDihydromethyl propionic acid and polyacrylamide, reaction 20-50min, adds nanoclay, couplingAgent and nano boron carbide, reaction 1-2h, continues to add wollastonite in powder, latent curing agent, lightweightCalcium carbonate, dispersant and defoamer, mixing and stirring, obtains environment-friendly type waterproof polyurethane and is coated withMaterial.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810060228.8A CN108285735B (en) | 2016-03-24 | 2016-03-24 | A kind of preparation method of coating |
| CN201610173183.6A CN105602436B (en) | 2016-03-24 | 2016-03-24 | A kind of environment-friendly type waterproof polyurethane coating and preparation method thereof |
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Cited By (9)
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| CN106433423A (en) * | 2016-10-18 | 2017-02-22 | 盘锦首源新材料有限公司 | Environment-friendly manual polyurea plastic surface layer material and preparation method thereof |
| CN108976860A (en) * | 2018-07-16 | 2018-12-11 | 东莞市瑞翔新型材料科技有限公司 | A kind of waterproof polyurethane coating and preparation method thereof for zipper |
| CN109337564A (en) * | 2018-09-12 | 2019-02-15 | 安徽康瑞高科新材料技术工程有限公司 | A kind of polyurethane water-proof paint and preparation method thereof |
| CN109575810A (en) * | 2018-12-31 | 2019-04-05 | 柳州申通汽车科技有限公司 | Aqueous automobile nano paint and its processing technology |
| CN109627822A (en) * | 2018-12-31 | 2019-04-16 | 柳州申通汽车科技有限公司 | Aqueous automobile nano paint and preparation method thereof |
| CN109880500A (en) * | 2019-01-28 | 2019-06-14 | 南京林业大学 | The preparation method of nano boron carbide modified aqueous polyurethane high wear resistance coatings |
| CN110256838A (en) * | 2019-07-17 | 2019-09-20 | 湖南五彩石防水防腐工程技术有限责任公司 | Environment-friendly type solvent-free large arch dam chemical grouting plugging material and preparation method thereof |
| CN112876978A (en) * | 2019-08-02 | 2021-06-01 | 江苏凯伦建材股份有限公司 | Preparation method of single-component root-puncture-resistant waterproof coating |
| CN113801553A (en) * | 2020-06-15 | 2021-12-17 | 上海格烈风新材料科技有限公司 | Novel graphene heavy-duty anticorrosive wear-resistant coating and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106433423A (en) * | 2016-10-18 | 2017-02-22 | 盘锦首源新材料有限公司 | Environment-friendly manual polyurea plastic surface layer material and preparation method thereof |
| CN108976860A (en) * | 2018-07-16 | 2018-12-11 | 东莞市瑞翔新型材料科技有限公司 | A kind of waterproof polyurethane coating and preparation method thereof for zipper |
| CN109337564A (en) * | 2018-09-12 | 2019-02-15 | 安徽康瑞高科新材料技术工程有限公司 | A kind of polyurethane water-proof paint and preparation method thereof |
| CN109575810A (en) * | 2018-12-31 | 2019-04-05 | 柳州申通汽车科技有限公司 | Aqueous automobile nano paint and its processing technology |
| CN109627822A (en) * | 2018-12-31 | 2019-04-16 | 柳州申通汽车科技有限公司 | Aqueous automobile nano paint and preparation method thereof |
| CN109880500A (en) * | 2019-01-28 | 2019-06-14 | 南京林业大学 | The preparation method of nano boron carbide modified aqueous polyurethane high wear resistance coatings |
| CN110256838A (en) * | 2019-07-17 | 2019-09-20 | 湖南五彩石防水防腐工程技术有限责任公司 | Environment-friendly type solvent-free large arch dam chemical grouting plugging material and preparation method thereof |
| CN112876978A (en) * | 2019-08-02 | 2021-06-01 | 江苏凯伦建材股份有限公司 | Preparation method of single-component root-puncture-resistant waterproof coating |
| CN112876978B (en) * | 2019-08-02 | 2021-12-24 | 江苏凯伦建材股份有限公司 | Preparation method of single-component root-puncture-resistant waterproof coating |
| CN113801553A (en) * | 2020-06-15 | 2021-12-17 | 上海格烈风新材料科技有限公司 | Novel graphene heavy-duty anticorrosive wear-resistant coating and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105602436B (en) | 2018-03-23 |
| CN108285735A (en) | 2018-07-17 |
| CN108285735B (en) | 2019-08-09 |
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