CN107353806A - A kind of heat-resisting uvioresistant polyurethane coating - Google Patents
A kind of heat-resisting uvioresistant polyurethane coating Download PDFInfo
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- CN107353806A CN107353806A CN201710486051.3A CN201710486051A CN107353806A CN 107353806 A CN107353806 A CN 107353806A CN 201710486051 A CN201710486051 A CN 201710486051A CN 107353806 A CN107353806 A CN 107353806A
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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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- 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
- C08G18/67—Unsaturated compounds having active hydrogen
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- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention discloses a kind of heat-resisting uvioresistant polyurethane coating, its raw material includes by weight：70 90 parts of modified polyurethane emulsion, 10 30 parts of aqueous epoxy resin emulsion, 20 25 parts of filler, 24 parts of Lauryl Alcohol ester, 24 parts of lauryl sodium sulfate, 0.2 0.3 parts of defoamer, 0.1 0.2 parts of wetting agent Wet265,0.3 0.4 parts of glycerine, 0.1 0.2 parts of polyacrylamide, 0.1 0.3 parts of polyvinylpyrrolidone, 0.4 0.6 parts of levelling agent, 1 1.2 parts of γ glycidyl ether oxygen propyl trimethoxy silicanes, 0.1 0.2 parts of antiseptic, 12 18 parts of water, 8 10 parts of ethanol.The present invention has good heat resistance, anti-ultraviolet property, intensity, toughness and caking property.
Description
Technical field
The present invention relates to technical field of coatings, more particularly to a kind of heat-resisting uvioresistant polyurethane coating.
Background technology
With the continuous development of industry, coating has been used for all trades and professions, there is a variety of species and performance；At present to coating
Research focuses mostly in water paint, increase paint machine performance etc..Severe ring to being chronically at high temperature and sunlight exposure
, it is necessary to which coating has heat-resisting quantity and ageing resistace in border；Titanium dioxide has heat-resisting quantity and anti-ultraviolet property, still
Titanium dioxide is easily reunited, and is added in coating, easily causes the reduction of paint machine performance.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of heat-resisting uvioresistant polyurethane coating, this
Invention has good heat resistance, anti-ultraviolet property, intensity, toughness and caking property.
A kind of heat-resisting uvioresistant polyurethane coating proposed by the present invention, its raw material include by weight：Modified polyurethane
Emulsion 70-90 parts, aqueous epoxy resin emulsion 10-30 parts, filler 20-25 parts, Lauryl Alcohol ester 2-4 parts, dodecyl sulphate
Sodium 2-4 parts, defoamer 0.2-0.3 parts, wetting agent Wet265 0.1-0.2 parts, glycerine 0.3-0.4 parts, polyacrylamide 0.1-
0.2 part, polyvinylpyrrolidone 0.1-0.3 parts, levelling agent 0.4-0.6 parts, γ-glycidyl ether oxygen propyl trimethoxy silicane
1-1.2 parts, antiseptic 0.1-0.2 parts, water 12-18 parts, ethanol 8-10 parts.
Preferably, in modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene diisocyanates
Acid esters, polyethylene glycol-800 mix, and heating, insulated and stirred, add dihydromethyl propionic acid, dibutyl tin laurate, continue to be incubated
Stirring, hydroxy-ethyl acrylate is subsequently added into, continues insulated and stirred and obtain polyurethane prepolymer solution；Modifying titanium dioxide is added
Ultrasonic disperse is uniform in acetone, then adds in polyurethane prepolymer solution and mixes, continue insulated and stirred, be cooled to room temperature, uses
Triethylamine neutralizes, and adds water emulsification pretreatment, and removing acetone is evaporated under reduced pressure and obtains modified polyurethane emulsion.
Preferably, in modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene diisocyanates
Acid esters, polyethylene glycol-800 mix, and are warming up to 40-55 DEG C, insulated and stirred 20-40min, add dihydromethyl propionic acid, tin dilaurate
Dibutyl tin, continue insulated and stirred 1-2h, be subsequently added into hydroxy-ethyl acrylate, continue insulated and stirred 1-2h and obtain polyurethane prepolymer
Liquid solution；Ultrasonic disperse in modifying titanium dioxide addition acetone is uniform, then add in polyurethane prepolymer solution and mix, after
Continuous insulated and stirred 40-60min, is cooled to room temperature, is neutralized with triethylamine, adds water emulsification pretreatment, and removing acetone is evaporated under reduced pressure and obtains
Modified polyurethane emulsion.
Preferably, in modified polyurethane emulsion preparation process, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydroxy
Methylpropanoic acid, dibutyl tin laurate, hydroxy-ethyl acrylate, modifying titanium dioxide, the weight ratio of water are 25-35：30-40：
1.9-2.6：0.04-0.06：4.3-6：2.7-3.7：80-100.
Preferably, in modified polyurethane emulsion preparation process, the preparation method of modifying titanium dioxide is：In nitrogen atmosphere
In, nano titanium oxide, 2,4- toluene di-isocyanate(TDI)s, dibutyl tin laurate are added in DMF and mixed
It is even, heating, insulated and stirred, hydroxy-ethyl acrylate is added, continues to stir, filters to take filter cake, washed, be dried to obtain modified titanium dioxide
Titanium.
Preferably, in modified polyurethane emulsion preparation process, the preparation method of modifying titanium dioxide is：In nitrogen atmosphere
In, nano titanium oxide, 2,4- toluene di-isocyanate(TDI)s, dibutyl tin laurate are added in DMF and mixed
It is even, 80-90 DEG C, insulated and stirred 7-9h is warming up to, adds hydroxy-ethyl acrylate, continues to stir 3-4h, filters to take filter cake, wash,
It is dried to obtain modifying titanium dioxide.
Preferably, in the preparation process of modifying titanium dioxide, nano titanium oxide, 2,4- toluene di-isocyanate(TDI)s, third
Olefin(e) acid hydroxyl ethyl ester, the weight of dibutyl tin laurate ratio are 8-12：0.7-1：1-1.5：0.01-0.015.
Preferably, defoamer is silicone emulsion or the fatty acid ester compounded thing of higher alcohols.
Preferably, the solid content of aqueous epoxy resin emulsion is 30-40wt%.
Preferably, the raw material of filler includes：Hollow glass micropearl, talcum powder, precipitated calcium carbonate, wherein, hollow glass is micro-
Pearl, talcum powder, the weight ratio of precipitated calcium carbonate are 2-3：1-2：3-5.
Above-mentioned water is purified water.
In above-mentioned modified polyurethane emulsion preparation process, acetone does not provide its dosage, according to specific behaviour as reaction dissolvent
Make to determine its dosage.
In the preparation process of above-mentioned modifying titanium dioxide, DMF does not provide its use as reaction dissolvent
Amount, its dosage is determined according to concrete operations.
The present invention preparation method be：Water, ethanol, modified polyurethane emulsion, aqueous epoxy resin emulsion are mixed, added
Lauryl Alcohol ester mixes, and adds lauryl sodium sulfate, wetting agent Wet265, glycerine, γ-glycidyl ether oxygen propyl trimethoxy
Base silane, antiseptic mix, and add filler and mix, are disperseed with dispersion machine, and then grinding obtains slurry；Defoaming is added into slurry
Agent, polyacrylamide, polyvinylpyrrolidone, levelling agent are uniformly mixed so as to obtain heat-resisting uvioresistant polyurethane coating.
The present invention is cooperated from aqueous epoxy resin emulsion and modified polyurethane emulsion, can increase the resistance to of the present invention
Hot, adhesiveness, hardness and toughness；Cooperated from hollow glass micropearl, talcum powder, precipitated calcium carbonate, can be further
Increase the intensity and heat resistance of the present invention；2,4 toluene diisocyanate, polyethylene glycol-800, dihydromethyl propionic acid, acrylic acid hydroxyl
Ethyl ester is reacted with proper ratio so that soft segment and hard section keep proper ratio and interconnected in polyurethane, so as to increase
The intensity and toughness of polyurethane, and with carbon-carbon double bond block to obtain the polyurethane prepolymer solution of carbon-carbon double bond end-blocking；Nanometer
Titanium dioxide has good heat resistance, anti-ultraviolet property, intensity, hardness and wearability, but nano titanium oxide is easily rolled into a ball
It is poly-, it is not easy to disperse, great amount of hydroxy group is contained on its surface, by reacting with 2,4- toluene di-isocyanate(TDI)s, connects in titanium dioxide surface
Upper 2, the 4- toluene di-isocyanate(TDI)s of branch, considerably increase dispersiveness of the titanium dioxide in polyurethane prepolymer solution, and then
Reacted with hydroxy-ethyl acrylate, the carbon-carbon double bond in titanium dioxide surface grafting, the polyurethane prepolymer that can be blocked with carbon-carbon double bond
Liquid solution polymerize, formed complexity cross-linked network, so as to considerably increase the heat resistance of polyurethane, anti-ultraviolet property and
Mechanical strength；Lauryl Alcohol ester is coalescents, increases the film forming of the present invention；Lauryl sodium sulfate, wetting agent Wet265,
Glycerine cooperate, each material can be promoted dispersed, antiseptic, defoamer, polyacrylamide, polyvinylpyrrolidone,
Levelling agent cooperates, and can increase rheological characteristic, stability and the antibiotic property of the present invention；γ-glycidyl ether oxygen propyl front three
TMOS and aqueous epoxy resin emulsion cooperate, and can further increase the present invention and the caking property of coated article；It is above-mentioned
Each material, which cooperates, causes the present invention to have good heat resistance, anti-ultraviolet property, intensity and toughness.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of heat-resisting uvioresistant polyurethane coating, its raw material include by weight：80 parts of modified polyurethane emulsion, it is water-based
20 parts of epoxy resin latex, 22 parts of filler, 3 parts of Lauryl Alcohol ester, 3 parts of lauryl sodium sulfate, 0.25 part of defoamer, wetting agent
0.15 part of Wet265,0.35 part of glycerine, 0.15 part of polyacrylamide, 0.2 part of polyvinylpyrrolidone, 0.5 part of levelling agent, γ-
1.1 parts of glycidyl ether oxygen propyl trimethoxy silicane, 0.15 part of antiseptic, 15 parts of water, 9 parts of ethanol.
Embodiment 2
A kind of heat-resisting uvioresistant polyurethane coating, its raw material include by weight：70 parts of modified polyurethane emulsion, admittedly contain
Measure as 10 parts of 40wt% aqueous epoxy resin emulsions, 25 parts of filler, 2 parts of Lauryl Alcohol ester, 4 parts of lauryl sodium sulfate, emulsification
0.2 part of silicone oil, 0.2 part of wetting agent Wet265,0.3 part of glycerine, 0.2 part of polyacrylamide, 0.1 part of polyvinylpyrrolidone, stream
Flat 0.6 part of agent, 1 part of γ-glycidyl ether oxygen propyl trimethoxy silicane, 0.2 part of antiseptic, 12 parts of water, 10 parts of ethanol；
Wherein, in modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene diisocynates
Ester, polyethylene glycol-800 mix, and are warming up to 40 DEG C, insulated and stirred 40min, add dihydromethyl propionic acid, di lauric dibutyl
Tin, continue insulated and stirred 1h, be subsequently added into hydroxy-ethyl acrylate, continue insulated and stirred 2h and obtain polyurethane prepolymer solution；Will
Ultrasonic disperse is uniform in modifying titanium dioxide addition acetone, then adds in polyurethane prepolymer solution and mixes, continues insulation and stir
40min is mixed, is cooled to room temperature, is neutralized with triethylamine, adds water emulsification pretreatment, removing acetone is evaporated under reduced pressure and obtains modified polyurethane breast
Liquid, wherein, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydromethyl propionic acid, dibutyl tin laurate, acrylic acid hydroxyl
Ethyl ester, modifying titanium dioxide, the weight ratio of water are 35：30：2.6：0.04：6：2.7：100.
Embodiment 3
A kind of heat-resisting uvioresistant polyurethane coating, its raw material include by weight：90 parts of modified polyurethane emulsion, admittedly contain
Measure as 30 parts of 30wt% aqueous epoxy resin emulsions, 20 parts of filler, 4 parts of Lauryl Alcohol ester, 2 parts of lauryl sodium sulfate, high-carbon
0.3 part of polyol fatty acid ester complexes, 0.1 part of wetting agent Wet265,0.4 part of glycerine, 0.1 part of polyacrylamide, polyvinyl pyrrole
0.3 part of alkanone, 0.4 part of levelling agent, 1.2 parts of γ-glycidyl ether oxygen propyl trimethoxy silicane, 0.1 part of antiseptic, water 18
Part, 8 parts of ethanol；
Wherein, in modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene diisocynates
Ester, polyethylene glycol-800 mix, and are warming up to 55 DEG C, insulated and stirred 20min, add dihydromethyl propionic acid, di lauric dibutyl
Tin, continue insulated and stirred 2h, be subsequently added into hydroxy-ethyl acrylate, continue insulated and stirred 1h and obtain polyurethane prepolymer solution；Will
Ultrasonic disperse is uniform in modifying titanium dioxide addition acetone, then adds in polyurethane prepolymer solution and mixes, continues insulation and stir
60min is mixed, is cooled to room temperature, is neutralized with triethylamine, adds water emulsification pretreatment, removing acetone is evaporated under reduced pressure and obtains modified polyurethane breast
Liquid, wherein, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydromethyl propionic acid, dibutyl tin laurate, acrylic acid hydroxyl
Ethyl ester, modifying titanium dioxide, the weight ratio of water are 25：40：1.9：0.06：4.3：3.7：80；
The preparation method of modifying titanium dioxide is：In nitrogen atmosphere, by nano titanium oxide, 2,4- toluene diisocynates
Ester, dibutyl tin laurate are added in DMF and mixed, and are warming up to 90 DEG C, insulated and stirred 7h, add propylene
Sour hydroxyl ethyl ester, continue to stir 4h, filter to take filter cake, wash, be dried to obtain modifying titanium dioxide, wherein, nano titanium oxide, 2,
4- toluene di-isocyanate(TDI)s, hydroxy-ethyl acrylate, the weight ratio of dibutyl tin laurate are 8：1：1：0.015.
Embodiment 4
A kind of heat-resisting uvioresistant polyurethane coating, its raw material include by weight：75 parts of modified polyurethane emulsion, admittedly contain
Measure as 15 parts of 38wt% aqueous epoxy resin emulsions, 23 parts of filler, 2.5 parts of Lauryl Alcohol ester, 3.5 parts of lauryl sodium sulfate,
0.22 part, 0.17 part of wetting agent Wet265 of the fatty acid ester compounded thing of higher alcohols, 0.32 part of glycerine, 0.17 part of polyacrylamide, gather
0.15 part of vinylpyrrolidone, 0.55 part of levelling agent, 1.05 parts of γ-glycidyl ether oxygen propyl trimethoxy silicane, antiseptic
0.18 part, 14 parts of water, 9.5 parts of ethanol；
Wherein, the raw material of filler includes：Hollow glass micropearl, talcum powder, precipitated calcium carbonate, wherein, hollow glass micropearl,
Talcum powder, the weight ratio of precipitated calcium carbonate are 2：2：3；
In modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene di-isocyanate(TDI)s, gather
Ethylene glycol 800 mixes, and is warming up to 50 DEG C, insulated and stirred 25min, adds dihydromethyl propionic acid, dibutyl tin laurate, continues
Insulated and stirred 1.8h, hydroxy-ethyl acrylate is subsequently added into, continues insulated and stirred 1.2h and obtain polyurethane prepolymer solution；Will be modified
Ultrasonic disperse is uniform in titanium dioxide addition acetone, then adds in polyurethane prepolymer solution and mixes, continues insulated and stirred
55min, room temperature is cooled to, is neutralized with triethylamine, add water emulsification pretreatment, removing acetone is evaporated under reduced pressure and obtains modified polyurethane breast
Liquid, wherein, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydromethyl propionic acid, dibutyl tin laurate, acrylic acid hydroxyl
Ethyl ester, modifying titanium dioxide, the weight ratio of water are 28：37：2.1：0.055：5：3.4：85；
The preparation method of modifying titanium dioxide is：In nitrogen atmosphere, by nano titanium oxide, 2,4- toluene diisocynates
Ester, dibutyl tin laurate are added in DMF and mixed, and are warming up to 80 DEG C, insulated and stirred 9h, add propylene
Sour hydroxyl ethyl ester, continue to stir 3h, filter to take filter cake, wash, be dried to obtain modifying titanium dioxide, wherein, nano titanium oxide, 2,
4- toluene di-isocyanate(TDI)s, hydroxy-ethyl acrylate, the weight ratio of dibutyl tin laurate are 12：0.7：1.5：0.01.
Embodiment 5
A kind of heat-resisting uvioresistant polyurethane coating, its raw material include by weight：85 parts of modified polyurethane emulsion, admittedly contain
Measure as 25 parts of 32wt% aqueous epoxy resin emulsions, 21 parts of filler, 3.5 parts of Lauryl Alcohol ester, 2.5 parts of lauryl sodium sulfate,
0.28 part of silicone emulsion, 0.13 part of wetting agent Wet265,0.38 part of glycerine, 0.13 part of polyacrylamide, polyvinylpyrrolidone
0.25 part, 0.45 part of levelling agent, 1.15 parts of γ-glycidyl ether oxygen propyl trimethoxy silicane, 0.12 part of antiseptic, water 16
Part, 8.5 parts of ethanol；
Wherein, the raw material of filler includes：Hollow glass micropearl, talcum powder, precipitated calcium carbonate, wherein, hollow glass micropearl,
Talcum powder, the weight ratio of precipitated calcium carbonate are 3：1：5；
In modified polyurethane emulsion preparation process, in nitrogen atmosphere, by acetone, 2,4- toluene di-isocyanate(TDI)s, gather
Ethylene glycol 800 mixes, and is warming up to 45 DEG C, insulated and stirred 35min, adds dihydromethyl propionic acid, dibutyl tin laurate, continues
Insulated and stirred 1.2h, hydroxy-ethyl acrylate is subsequently added into, continues insulated and stirred 1.8h and obtain polyurethane prepolymer solution；Will be modified
Ultrasonic disperse is uniform in titanium dioxide addition acetone, then adds in polyurethane prepolymer solution and mixes, continues insulated and stirred
45min, room temperature is cooled to, is neutralized with triethylamine, add water emulsification pretreatment, removing acetone is evaporated under reduced pressure and obtains modified polyurethane breast
Liquid, wherein, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydromethyl propionic acid, dibutyl tin laurate, acrylic acid hydroxyl
Ethyl ester, modifying titanium dioxide, the weight ratio of water are 32：33：2.4：0.045：5.5：3：95；
The preparation method of modifying titanium dioxide is：In nitrogen atmosphere, by nano titanium oxide, 2,4- toluene diisocynates
Ester, dibutyl tin laurate are added in DMF and mixed, and are warming up to 85 DEG C, insulated and stirred 8h, add propylene
Sour hydroxyl ethyl ester, continue to stir 3.5h, filter to take filter cake, wash, be dried to obtain modifying titanium dioxide, wherein, nano titanium oxide,
2,4 toluene diisocyanate, hydroxy-ethyl acrylate, the weight ratio of dibutyl tin laurate are 10：0.9：1.3：0.012.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of heat-resisting uvioresistant polyurethane coating, it is characterised in that its raw material includes by weight：Modified polyurethane emulsion
70-90 parts, aqueous epoxy resin emulsion 10-30 parts, filler 20-25 parts, Lauryl Alcohol ester 2-4 parts, lauryl sodium sulfate 2-4
Part, defoamer 0.2-0.3 parts, wetting agent Wet265 0.1-0.2 parts, glycerine 0.3-0.4 parts, polyacrylamide 0.1-0.2 parts,
Polyvinylpyrrolidone 0.1-0.3 parts, levelling agent 0.4-0.6 parts, γ-glycidyl ether oxygen propyl trimethoxy silicane 1-1.2
Part, antiseptic 0.1-0.2 parts, water 12-18 parts, ethanol 8-10 parts.
2. heat-resisting uvioresistant polyurethane coating according to claim 1, it is characterised in that prepared in modified polyurethane emulsion
During, in nitrogen atmosphere, acetone, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800 are mixed, heating, insulated and stirred,
Dihydromethyl propionic acid, dibutyl tin laurate are added, continues insulated and stirred, is subsequently added into hydroxy-ethyl acrylate, continues to be incubated
Stirring obtains polyurethane prepolymer solution；Ultrasonic disperse in modifying titanium dioxide addition acetone is uniform, then add polyurethane
Mixed in prepolymer solution, continue insulated and stirred, be cooled to room temperature, neutralized with triethylamine, add water emulsification pretreatment, reduction vaporization removes
Acetone is gone to obtain modified polyurethane emulsion.
3. heat-resisting uvioresistant polyurethane coating according to claim 1 or claim 2, it is characterised in that in modified polyurethane emulsion
In preparation process, in nitrogen atmosphere, acetone, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800 are mixed, are warming up to 40-55
DEG C, insulated and stirred 20-40min, dihydromethyl propionic acid, dibutyl tin laurate are added, continue insulated and stirred 1-2h, then added
Enter hydroxy-ethyl acrylate, continue insulated and stirred 1-2h and obtain polyurethane prepolymer solution；Modifying titanium dioxide is added in acetone
Ultrasonic disperse is uniform, then adds in polyurethane prepolymer solution and mixes, continues insulated and stirred 40-60min, be cooled to room temperature,
Neutralized with triethylamine, add water emulsification pretreatment, removing acetone is evaporated under reduced pressure and obtains modified polyurethane emulsion.
4. the heat-resisting uvioresistant polyurethane coating according to Claims 2 or 3, it is characterised in that in modified polyurethane emulsion
In preparation process, 2,4- toluene di-isocyanate(TDI)s, polyethylene glycol-800, dihydromethyl propionic acid, dibutyl tin laurate, propylene
Sour hydroxyl ethyl ester, modifying titanium dioxide, the weight ratio of water are 25-35：30-40：1.9-2.6：0.04-0.06：4.3-6：2.7-
3.7：80-100.
5. according to any one of the claim 2-4 heat-resisting uvioresistant polyurethane coatings, it is characterised in that in modified polyurethane
In emulsion preparation process, the preparation method of modifying titanium dioxide is：In nitrogen atmosphere, by nano titanium oxide, 2,4- toluene
Diisocyanate, dibutyl tin laurate are added in DMF and mixed, and are heated up, and insulated and stirred, add propylene
Sour hydroxyl ethyl ester, continue to stir, filter to take filter cake, wash, be dried to obtain modifying titanium dioxide.
6. according to any one of the claim 2-5 heat-resisting uvioresistant polyurethane coatings, it is characterised in that in modified polyurethane
In emulsion preparation process, the preparation method of modifying titanium dioxide is：In nitrogen atmosphere, by nano titanium oxide, 2,4- toluene
Diisocyanate, dibutyl tin laurate are added in DMF and mixed, and are warming up to 80-90 DEG C, insulated and stirred
7-9h, hydroxy-ethyl acrylate is added, continue to stir 3-4h, filter to take filter cake, wash, be dried to obtain modifying titanium dioxide.
7. according to the heat-resisting uvioresistant polyurethane coating of claim 5 or 6, it is characterised in that in modifying titanium dioxide
In preparation process, nano titanium oxide, 2,4- toluene di-isocyanate(TDI)s, hydroxy-ethyl acrylate, the weight of dibutyl tin laurate
It is 8-12 to measure ratio：0.7-1：1-1.5：0.01-0.015.
8. according to any one of the claim 1-7 heat-resisting uvioresistant polyurethane coatings, it is characterised in that defoamer is emulsification
Silicone oil or the fatty acid ester compounded thing of higher alcohols.
9. according to any one of the claim 1-8 heat-resisting uvioresistant polyurethane coatings, it is characterised in that aqueous epoxy resins
The solid content of emulsion is 30-40wt%.
10. according to any one of the claim 1-9 heat-resisting uvioresistant polyurethane coatings, it is characterised in that the raw material of filler
Including：Hollow glass micropearl, talcum powder, precipitated calcium carbonate, wherein, hollow glass micropearl, talcum powder, the weight of precipitated calcium carbonate
Than for 2-3：1-2：3-5.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110183954A (en) * | 2019-05-28 | 2019-08-30 | 广东梵竹水性涂料有限公司 | A kind of preparation method of light-resistant waterborne polyurethane coating |
| CN114574065A (en) * | 2022-03-09 | 2022-06-03 | 无锡市造漆厂有限公司 | Long-life polyurethane acrylic coating and preparation method thereof |
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| CN106433441A (en) * | 2016-11-29 | 2017-02-22 | 安徽圆梦建筑有限公司 | Water-resistant environment-friendly waterborne coating |
| CN106589900A (en) * | 2016-11-29 | 2017-04-26 | 天长市良文运动器材有限公司 | Shock-resistant UV-resistant synthetic leather for baseballs |
| CN106590395A (en) * | 2016-11-29 | 2017-04-26 | 安徽圆梦建筑有限公司 | Corrosion-resistance ultraviolet-resistant water-based coating |
| CN106752859A (en) * | 2016-11-29 | 2017-05-31 | 安徽圆梦建筑有限公司 | A kind of water-fast knot water paint easy to stick |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106433441A (en) * | 2016-11-29 | 2017-02-22 | 安徽圆梦建筑有限公司 | Water-resistant environment-friendly waterborne coating |
| CN106589900A (en) * | 2016-11-29 | 2017-04-26 | 天长市良文运动器材有限公司 | Shock-resistant UV-resistant synthetic leather for baseballs |
| CN106590395A (en) * | 2016-11-29 | 2017-04-26 | 安徽圆梦建筑有限公司 | Corrosion-resistance ultraviolet-resistant water-based coating |
| CN106752859A (en) * | 2016-11-29 | 2017-05-31 | 安徽圆梦建筑有限公司 | A kind of water-fast knot water paint easy to stick |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110183954A (en) * | 2019-05-28 | 2019-08-30 | 广东梵竹水性涂料有限公司 | A kind of preparation method of light-resistant waterborne polyurethane coating |
| CN114574065A (en) * | 2022-03-09 | 2022-06-03 | 无锡市造漆厂有限公司 | Long-life polyurethane acrylic coating and preparation method thereof |
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Application publication date: 20171117 |