CN108485510A - A kind of air-dry water-based sealer of woodenware one-component and preparation method thereof - Google Patents
A kind of air-dry water-based sealer of woodenware one-component and preparation method thereof Download PDFInfo
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- CN108485510A CN108485510A CN201810411616.6A CN201810411616A CN108485510A CN 108485510 A CN108485510 A CN 108485510A CN 201810411616 A CN201810411616 A CN 201810411616A CN 108485510 A CN108485510 A CN 108485510A
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Classifications
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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
-
- 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
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
-
- 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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
Abstract
The invention discloses a kind of air-dry water-based sealer of woodenware one-component, for a period of time by polyalcohol and isocyanate-monomer hybrid reaction；It is added a certain amount of acetone and dihydromethyl propionic acid the reaction was continued a period of time；Cool down after BDO, HEA reaction a period of time is added；Triethylamine is added to neutralize, and is added water-dispersed, then removes acetone, obtains aqueous polyurethane dispersion；Aqueous polyurethane dispersion be can be obtained into the acroleic acid polyurethane mixed emulsion with acrylic monomers copolymerization.The acroleic acid polyurethane complex emulsions that through the invention prepared by the method have fine and close film-formation result, wood surface can very well be wrapped up, makes it that can not more absorb the moisture in water paint and serious base material occurs and rises by muscle and causes coating surface impaired.Arrange in pairs or groups rational auxiliary agent simultaneously, final coating wood surface using when the timber muscle that rises can be effectively prevent to destroy and the problems such as permeability changes colour.
Description
Technical field
The invention belongs to technical field of polymer materials, are related to a kind of woodenware single group applied to aqueous woodware paint industry
Air-dry water-based sealer of part and preparation method thereof.
Background technology
Currently, aqueous woodware paint coating has protection and the decoration functions of usual vehicle type coating, but in high-decoration
It is required that occasion, be unable to reach very high richness, need solvent based coating to realize.Mainly general aqueous woodware paint
Can cause during coating aqueous carpentry base material rise muscle, bleeding, permeability the problem of.
American-European countries realizes woodcare paint Water-borne modification technology mostly, is applied compared to domestic mainly solvent type used at present
Material, aqueous woodware paint only have smaller low-end applications at present.Main problem, which is water paint, to be had much ask in application process
Topic is noted that and cost is higher.The seal coat produced in industry at present can not prevent timber from rising muscle, and common practice is
The muscle to bulge is polished and is removed, can thus destroy timber and paint film, the anti-tannic acid seal coat of the anti-bulging tendons of our company can be effective
Solve the problems, such as that paint film is coated in wood surface and timber bulging tendons bleeding is caused to migrate.
Invention content
In order to solve the problems in the existing technology the present invention, provides a kind of air-dry water-based closing of woodenware one pack system
The preparation method of agent, includes the following steps：
Step 1：By polyalcohol and isocyanate-monomer hybrid reaction；
Step 2：The reaction was continued for addition acetone and dihydromethyl propionic acid；
Step 3：BDO (1,4 butanediol), HEA (Hydroxyethyl Acrylate) reaction is added；
Step 4：Be added triethylamine, and be added it is water-dispersed,
Step 5：Acetone is removed, aqueous polyurethane dispersion is obtained；
Step 6：Acrylic monomers is added and initiator carries out copolyreaction and generates polyurethane-modified acrylic acid lotion
(PUA)；
Step 7：Dipropylene glycol methyl ether, dipropylene, levelling agent, wetting agent, antifoaming agent and water system are added in PUA
At the air-dry water-based sealer of one pack system, the wherein mass fraction of PUA is 85-95%, and dipropylene glycol methyl ether mass fraction is 2-
4%, dipropylene mass fraction is 2-4%, and levelling agent mass fraction is 0.2-0.4%, and wetting agent mass fraction is
0.3-0.5%, antifoaming agent mass fraction are 0.2-0.4%, remaining group is divided into water.
Further, polyalcohol and isocyanate-monomer hybrid reaction temperature are 85 DEG C -90 DEG C in step 1, the reaction time
1.5h-2h。
Further, 80 DEG C of -85 DEG C of reaction 1-1.5h are continued at after acetone and dihydromethyl propionic acid are added in step 2.
Further, 35 DEG C are cooled to after BDO, HEA reaction 1.5h being added in 70 DEG C -75 DEG C in step 3.
Further, in step 5 acetone is removed under 60 DEG C, 1333KPa.
Further, initiator is emulsifier in step 6.
Further, reaction condition is 82-85 DEG C of reaction 4h in step 6, then keeps the temperature 1h at 85 DEG C.
The present invention also provides a kind of air-dry water-based sealers of woodenware one pack system prepared by above-mentioned preparation method.
The air-dry water-based sealer of woodenware one-component provided by the invention, solves aqueous woodware paint and is coated on woodenware surface
Can cause timber rise muscle, bleeding, permeability the problem of.The beneficial effects of the invention are as follows so that it is special that film forming matter itself has
The closed performance of structure, product have compatibility that can also be wider with commercially available additive except high-performance, timber are effectively prevent to rise
Muscle destroys and permeability.
Description of the drawings
Fig. 1 is the preparation flow schematic diagram of air-dry water-based sealer provided by the invention；
Fig. 2 a and 2b are latex particle distribution maps in polyurethane-modified acrylic acid lotion prepared by the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Although the step in the present invention is arranged with label, it is not used to limit the precedence of step, unless
Based on the execution of the order or certain step that specify step needs other steps, the otherwise relative rank of step
It is adjustable.It is appreciated that term "and/or" used herein is related to and covers in associated Listed Items
One of or one or more of any and all possible combinations.
As shown in Figure 1, the present invention provides a kind of air-dry water-based sealer of woodenware one pack system, include the following steps：
Step 1：By polyalcohol and isocyanate-monomer hybrid reaction；
Specifically, polyalcohol and isocyanate-monomer hybrid reaction temperature are 85 DEG C -90 DEG C, reaction time 1.5h-2h.It is logical
It crosses reaction temperature setting in higher temperature, the process of reaction can be accelerated.
Step 2：The reaction was continued for addition acetone and dihydromethyl propionic acid；
Specifically, 80 DEG C of -85 DEG C of reaction 1-1.5h are continued at after acetone and dihydromethyl propionic acid is added.Acetone is wherein added
For dissolving dihydromethyl propionic acid.In the embodiment of the present invention, carrying out reaction in step 2 with lower temperature can slow down
The reaction speed of polyalcohol and isocyanates, in order to which dihydromethyl propionic acid is steadily smoothly embedded.
Step 3：BDO (1,4 butanediol), HEA (Hydroxyethyl Acrylate) reaction is added；
Specifically, BDO, HEA (having addition acetone in figure) is added at 70 DEG C -75 DEG C and reacts 1.5h, be then cooled to 35 DEG C.
Acetone, which is added, can reduce system viscosity, while in the BDO chain extensions of addition, HEA monomers and polyalcohol and the isocyanates of addition
Copolymer reaction is convenient for the reaction of step 6.35 DEG C are cooled to after reaction convenient for triethylamine neutralization, chain extension.
Step 4：Triethylamine is added, and is added water-dispersed；
Step 5：Acetone is removed, aqueous polyurethane dispersion is obtained；
Specifically, acetone is removed under 60 DEG C, 1333Kpa.It is higher convenient for removing acetone in 60 degree celsius temperatures.
Step 6：Acrylic monomers is added and initiator carries out copolyreaction and generates polyurethane-modified acrylic acid lotion
(PUA)。
Specifically, it is reacted at 82-85 degrees Celsius 4 hours, then keeps the temperature one hour at 85 degrees Celsius.
Step 7：Dipropylene glycol methyl ether, dipropylene, levelling agent, wetting agent, antifoaming agent and water system are added in PUA
At the air-dry water-based sealer of one pack system.
The present invention is described in detail With reference to embodiment.
Embodiment one
By 85 DEG C of polyalcohol and isocyanate-monomer mixed-controlled reaction temperature, 1.5h is reacted, acetone and dihydroxy first is added
Base propionic acid continues at 80 DEG C of reaction 1h, is cooled to 35 DEG C after BDO, HEA reaction 1.5h is added in 70 DEG C, triethylamine is added and neutralizes,
And it is added water-dispersed, acetone is removed under 60 DEG C, 1333KPa, this aqueous polyurethane dispersion is copolymerized with acrylic monomers
It can be obtained the acrylic acid-polyurethane mixed emulsion, i.e., air-dry water-based sealer.
Embodiment two
By 90 DEG C of polyalcohol and isocyanate-monomer mixed-controlled reaction temperature, 2h is reacted, acetone and dihydroxymethyl is added
Propionic acid continues at 85 DEG C of reaction 1.5h, is cooled to 35 DEG C after BDO, HEA reaction 1.5h is added in 75 DEG C, triethylamine is added and neutralizes,
And it is added water-dispersed, acetone is removed under 60 DEG C, 1333KPa, this aqueous polyurethane dispersion is copolymerized with acrylic monomers
It can be obtained the acrylic acid-polyurethane mixed emulsion.
Embodiment three
By 85 DEG C of polyalcohol and isocyanate-monomer mixed-controlled reaction temperature, 2h is reacted, acetone and dihydroxymethyl is added
Propionic acid continues at 85 DEG C of reaction 1.5h, is cooled to 35 DEG C after BDO, HEA reaction 1.5h is added in 75 DEG C, triethylamine is added and neutralizes,
And it is added water-dispersed, acetone is removed under 60 DEG C, 1333KPa, this aqueous polyurethane dispersion is copolymerized with acrylic monomers
It can be obtained the acrylic acid-polyurethane mixed emulsion.
The present invention also provides a kind of air-dry water-based sealers of woodenware one pack system being prepared using the above method.Its
The mass fraction of middle PUA is 85-95%, and dipropylene glycol methyl ether mass fraction is 2-4%, and dipropylene mass fraction is
2-4%, levelling agent mass fraction are 0.2-0.4%, and wetting agent mass fraction is 0.3-0.5%, and antifoaming agent mass fraction is
0.2-0.4%, remaining group are divided into water.
Woodenware provided by the invention is carried out in detail with the air-dry water-based sealer of one pack system With reference to embodiment
Explanation.
Embodiment one
The present invention also provides a kind of air-dry water-based sealers of woodenware one pack system being prepared using the above method.Its
The mass fraction of middle PUA is 85%, and dipropylene glycol methyl ether mass fraction is 4%, and dipropylene mass fraction is 4%, stream
Flat agent mass fraction is 0.3%, and wetting agent mass fraction is 0.4%, and antifoaming agent mass fraction is 0.3%, remaining group is divided into
Water.
Embodiment two
The present invention also provides a kind of air-dry water-based sealers of woodenware one pack system being prepared using the above method.Its
The mass fraction of middle PUA is 90%, and dipropylene glycol methyl ether mass fraction is 3%, and dipropylene mass fraction is 3%, stream
Flat agent mass fraction is 0.3%, and wetting agent mass fraction is 0.4%, and antifoaming agent mass fraction is 0.3%, remaining group is divided into
Water.
Embodiment three
The present invention also provides a kind of air-dry water-based sealers of woodenware one pack system being prepared using the above method.Its
The mass fraction of middle PUA is 95%, and dipropylene glycol methyl ether mass fraction is 2%, and dipropylene mass fraction is 2%, stream
Flat agent mass fraction is 0.2%, and wetting agent mass fraction is 0.3%, and antifoaming agent mass fraction is 0.2%, remaining group is divided into
Water.
Experimental data：
As illustrated in figures 2 a-2b, Fig. 2 a and 2b are the preparation of the air-dry water-based sealer of woodenware one-component provided by the invention
The grain size distribution of latex particle in the PUA prepared in second embodiment in method.
Upper figure is the particle diameter distribution for two kinds of different-grain diameter particles being primarily present in such PUA in project, we see that
Greater particle size R (Fig. 2 a) range is in 100nm or so, and smaller grain size r (Fig. 2 b) range is in 37nm, larger particle and smaller
Particle diameter size is 1:0.4 or so.
This composition brings extraordinary osmotic effect to sealer, at the same in such complex emulsions particle in drying and forming-film
Process small particles are filled big particle so that film has very fine and close arrangement.
Polyurethane-modified acrylic acid lotion provided by the invention has particle-stabilised advantageous effect.While in order to enable
Woodenware priming paint has better grinability and finishing coat has superior surface effect and anti-corrosion performance, is used in this technology
The above-mentioned reasonably combined auxiliary agent of polyurethane-modified acrylic acid lotion so that this anti-anti- tannic acid seal coat of bulging tendons is at woodenware bottom
Performance is showed when paint application.
Meanwhile the lotion of preparation is in terms of emulsion particle pattern, mainly in latex particle size, distribution, morphosis side
Face has effect outstanding；In terms of latex particle stability, have higher mechanical stability, dilution stability, ion steady
The advantageous effects such as qualitative and freeze-thaw stability.
The acrylic acid-polyurethane complex emulsions that through the invention prepared by the method have fine and close film-formation result, together
When rate of drying it is very fast, wood surface can very well be wrapped up, makes it that can not more absorb the water in water paint
Point and serious base material occurs and rises by muscle and causes coating surface impaired.Simultaneously as the film forming matter has extraordinary ion, acid, alkali
Stability, PUA films are fully wrapped around without being corroded by it tannic acid, alkaloid, the phenol organic matter in timber, and being allowed to can not
Out paint film is made to change colour from timber.Meanwhile the technology of the present invention uses above-mentioned acrylic acid-polyurethane complex emulsions, collocation to close
The auxiliary agent of reason, final coating wood surface using when can effectively prevent timber rise muscle destroy and permeability change colour the problems such as.
The above is only the better embodiment to the present invention, not makees limit in any form to the present invention
System, every any simple modification that embodiment of above is made according to the technical essence of the invention, equivalent variations and modification,
It belongs in the range of technical solution of the present invention.
Claims (9)
1. a kind of preparation method of the air-dry water-based sealer of woodenware one-component, it is characterised in that include the following steps：
Step 1：By polyalcohol and isocyanate-monomer hybrid reaction；
Step 2：The reaction was continued for addition acetone and dihydromethyl propionic acid；
Step 3：BDO (1,4 butanediol), HEA (Hydroxyethyl Acrylate) reaction is added；
Step 4：Be added triethylamine, and be added it is water-dispersed,
Step 5：Acetone is removed, aqueous polyurethane dispersion is obtained；
Step 6：Acrylic monomers is added and initiator carries out copolyreaction and generates PUA；
Step 7：Dipropylene glycol methyl ether, dipropylene, levelling agent, wetting agent, antifoaming agent and water are added in PUA, list is made
The air-dry water-based sealer of component.
2. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：It is described
In step 1, polyalcohol and isocyanate-monomer hybrid reaction temperature are 85 DEG C -90 DEG C, reaction time 1.5h-2h.
3. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：It is described
80 DEG C of -85 DEG C of reaction 1-1.5h are continued at after a certain amount of acetone and dihydromethyl propionic acid are added in step 2.
4. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：It is described
It is cooled to 35 DEG C after BDO, HEA reaction 1.5h is added in 70 DEG C -75 DEG C in step 3.
5. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：It is described
In step 5 acetone is removed under 60 DEG C, 1333KPa.
6. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：It is described
Initiator is emulsifier.
7. a kind of preparation method of the air-dry water-based sealer of woodenware one-component as described in claim 1, it is characterised in that：Wherein
The mass fraction of the PUA is 85-95%, and the dipropylene glycol methyl ether mass fraction is 2-4%, the dipropylene matter
Amount score is 2-4%, and the levelling agent mass fraction is 0.2-0.4%, and the wetting agent mass fraction is 0.3-0.5%, institute
It is 0.2-0.4% to state antifoaming agent mass fraction, remaining group is divided into water.
8. a kind of air-dry water-based sealer of woodenware one pack system, which is characterized in that described in any one of claim 1-7
Method is prepared.
9. a kind of air-dry water-based sealer of woodenware one-component as claimed in claim 8, which is characterized in that the wherein quality of PUA
Score is 85-95%, and dipropylene glycol methyl ether mass fraction is 2-4%, and dipropylene mass fraction is 2-4%, levelling agent
Mass fraction is 0.2-0.4%, and wetting agent mass fraction is 0.3-0.5%, and antifoaming agent mass fraction is 0.2-0.4%, remaining
Group is divided into water.
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| CN201810411616.6A CN108485510A (en) | 2018-05-02 | 2018-05-02 | A kind of air-dry water-based sealer of woodenware one-component and preparation method thereof |
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| CN109504271A (en) * | 2018-11-15 | 2019-03-22 | 上海展辰涂料有限公司 | A kind of anti-tannic acid becomes waterborne wood white paint and preparation method thereof |
| CN109593425A (en) * | 2018-11-15 | 2019-04-09 | 上海展辰涂料有限公司 | One kind modified aqueous acrylic acid lotion of amine containing zirconium carbonate and preparation method thereof |
| CN109877025A (en) * | 2019-01-29 | 2019-06-14 | 广东华润涂料有限公司 | Woodwork and preparation method thereof |
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Application publication date: 20180904 |