CN106479343A - A kind of preparation method of water paint - Google Patents
A kind of preparation method of water paint Download PDFInfo
- Publication number
- CN106479343A CN106479343A CN201611096216.8A CN201611096216A CN106479343A CN 106479343 A CN106479343 A CN 106479343A CN 201611096216 A CN201611096216 A CN 201611096216A CN 106479343 A CN106479343 A CN 106479343A
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- CN
- China
- Prior art keywords
- water
- preparation
- hwpa
- paint
- water paint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
-
- 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
Abstract
A kind of preparation method of water paint, belongs to field of material preparation it is characterised in that comprising the steps：（1）Propylene glycol monomethyl ether is added in four-hole bottle；（2）Deca hydroxyethyl methylacrylate, acrylic acid, styrene, Isooctyl acrylate monomer and dibenzoyl peroxide, add dimethylethanolamine to obtain intermediate product；（3）Intermediate product Deca monomer and initiator is taken to obtain water based acrylic resin；（4）Water-base resin, cosolvent, nertralizer are put into scuffing of cylinder bore, is ground after disperseing at a high speed；（5）Plus deionized water and firming agent, after high-speed stirred, filtering and discharging, prepare aqueous glass paint.By adopting water-based hydroxyl acrylate to be film forming binder, preparing glass baseplate water paint using amino resins and watersoluble closed type isocyanate curing agent as composite curing agent system, prepared coating has good outward appearance, coating shows excellent water-fast, ethanol-tolerant and soaks and water boiling resistance performance, can be applicable to all kinds of glass baseplates.
Description
Technical field
The invention belongs to field of material preparation, more particularly, to a kind of preparation method of water paint.
Background technology
The application of glass and its product and decoration have extensive demand in industry and civil area, for example all kinds of bottles,
Scent flask etc. is required for glass surface is armor coated and decorative coveringn.China is the maximum country of global glass throughput, is
Improve the outward appearance of glass, improve the decorative effect of glass drying oven further, need to carry out application to glass surface, in the hope of
Reach higher decorative effect.
At present, the glass coating of domestic application mostly is solvent based product, the raising with people's environmental consciousness and environmental law
Laws ＆ Regulations sound, application on glass for the water paint is greatly paid attention to.Waterborne acrylic paint coating then overcomes
This shortcoming, had both had the performance advantage of solvent-type acrylic ester resin paint, meets the requirement of environmental protection development again, can apply
In glass field of coating.
Content of the invention
Present invention seek to address that the problems referred to above, provide a kind of preparation method of water paint.
The technical scheme is that：
A kind of preparation method of water paint is it is characterised in that comprise the steps：
（1）Add solvent propylene glycol methyl ether in the four-hole bottle equipped with agitator and condenser, be warming up to 140 DEG C；（2）Deca is mixed
Hydroxyethyl methylacrylate, acrylic acid, styrene, Isooctyl acrylate monomer and the dibenzoyl peroxide closing, protects after completion of dropwise addition
Warm 2h, add in dimethylethanolamine and after the emulsifying that adds water obtain intermediate product；
（3）Take intermediate product, Deca monomer and initiator hydroxyethyl methylacrylate, be incubated 5h discharging after completion of dropwise addition, obtain
Water based acrylic resin HWPA；
（4）Bulk aqueous resin HWPA, mixing cosolvent, color stuffing, levelling agent, nertralizer are put into scuffing of cylinder bore, after disperseing at a high speed
It is ground；
（5）Add deionized water and firming agent, discharging after high-speed stirred, adjustment solid divides, and filtering and discharging prepares aqueouss
Glass coating.
The preparation method of water paint of the present invention, the fineness of described grinding controls less than or equal to 30 μm.
The preparation method of water paint of the present invention, the solid content of described water based acrylic resin HWPA is
45%.
The preparation method of water paint of the present invention, the hydroxy radical content of described water based acrylic resin HWPA is
2.5%.
The method have technical effect that：
The preparation method of water paint of the present invention, by adopt water-based hydroxyl acrylate be film forming binder, with
Amino resins and watersoluble closed type isocyanate curing agent are as composite curing agent system, using epoxiess siloxanes as adhesive force
Accelerator, prepares glass baseplate water paint, and prepared coating has good outward appearance, and coating shows excellent resistance to
Water, ethanol-tolerant soak and water boiling resistance performance, can be applicable to all kinds of glass baseplates.
Specific embodiment
Embodiment 1
A kind of preparation method of water paint is it is characterised in that comprise the steps：
（1）Add solvent propylene glycol methyl ether in the four-hole bottle equipped with agitator and condenser, be warming up to 140 DEG C；
（2）The hydroxyethyl methylacrylate of Deca mixing, acrylic acid, styrene, Isooctyl acrylate monomer and dibenzoyl peroxide,
Be incubated 2h after completion of dropwise addition, add in dimethylethanolamine and after the emulsifying that adds water obtain intermediate product；
（3）Take intermediate product, Deca monomer and initiator hydroxyethyl methylacrylate, be incubated 5h discharging after completion of dropwise addition, obtain
Water based acrylic resin HWPA；
（4）Bulk aqueous resin HWPA, mixing cosolvent, color stuffing, levelling agent, nertralizer are put into scuffing of cylinder bore, after disperseing at a high speed
It is ground；
（5）Add deionized water and firming agent, discharging after high-speed stirred, adjustment solid divides, and filtering and discharging prepares aqueouss
Glass coating.
The preparation method of water paint of the present invention, the fineness of described grinding controls less than or equal to 30 μm.
The preparation method of water paint of the present invention, the solid content of described water based acrylic resin HWPA is
45%.
The preparation method of water paint of the present invention, the hydroxy radical content of described water based acrylic resin HWPA is
2.5%.
The deionized water adding 40%～50% during construction adjusts viscosity, stirs.Spray pressure 6～8kg.Surface of the work
Totally, in work progress, add adhesion promoter, using complete (working life 12h) preferably in 12h.Workpiece is treated after baking
After surface drying, put into 140 DEG C of baking 20 min in baking oven.
Water based acrylic resin is to be formed by multiple acrylic monomerss copolymerization, and side chain contains types of functionality group,
Such as hydroxyl, carboxyl etc..In carboxyl and after make resin have water solublity.Hydroxyl can be with amino resin crosslinked film-forming.Separately
On the one hand, carboxyl also can be reacted with amino resins, and carboxyl is slower than hydroxyl with amino resins reaction rate, crosslinked incomplete
Carboxyl stays and leads to water-resistant coating to decline in the coating.Additionally, the presence of carboxyl can accelerate the autohemagglutination of amino resins, lead to coating
Reduction of pliability, adhesive force and resistance to impact decline.Therefore, under the premise of ensureing that resin is water miscible, typically should reduce as far as possible
The content of carboxyl.Select the main polymerisation monomer such as methyl methacrylate, butyl acrylate, styrene in this project, and adopt
Functional monomer, as comonomer, prepares, using traditional solution polymerization process, the aqueouss that can compound with amino resins
Hydroxylated acrylic resin.
Typically there is curing cross-linking reaction in the presence of a curing agent in baking-type water-borne acrylic coatings, generate and have cross-linked network
The cured coating film of network structure.The watersoluble closed isocyanate crosslinking of this experimental selection and amino resins two class firming agent carry out solid
Change crosslinked.
At high temperature, the isocyanate groups deblocking of closing, then crosslinks solidification with the hydroxyl of acrylate
Reaction.Another kind of firming agent is water-compatible amino resin, under high temperature, the hydroxyl of functional group in amino resins and acrylate
Base crosslinks curing reaction.Compound water based acrylic resin standby with project system respectively using two kinds of different firming agent to join
Make coating, after spraying solidification, carry out performance test.
When being solidified using amino resins, cured coating film comprehensive excellent, hardness can reach 4H, but film water boiling resistance
Performance is slightly worse.During using watersoluble closed type cured with isocyanates, adhesive force is identical with amino resins solidification with ply adhesion, and
And cured coating film water boiling resistance performance is more excellent, after decocting in water 1 h, plate face is substantially still, not loss of gloss, and film performance recovers quickly.
In sum it is contemplated that the combination property of film and the relatively costly factor of blocked isocyanate curing agent.
Under conditions of constant blocked isocyanate curing agent consumption, with the increase of amino resins consumption, cured coating film
Hardness and glossiness increase, and resistance to water, ethanol-tolerant and decocting in water performance first increase and reduce afterwards.In amino resins/blocked isocyanate
Proportioning is 3:When 1, the combination property of cured coating film is optimum.Therefore, amino resins/blocked isocyanate proportioning is 3:1 is advisable.
Glass baseplate is higher due to fineness, and adhesive force and solvent resistance are poor, therefore generally thereon for conventional coating
Add a certain amount of silane coupler in coating system, to promote the attachment of film and glass baseplate.Experiment have chosen KH-
550 (amino silanes), KH-560 (epoxy silane), 3 kinds of conventional silane of KH-570 (methoxy silane) are as the adhesive force of system
Accelerator, addition is the 1% of paint liquid, has investigated the impact of its, ethanol-tolerant immersion water-fast to film and water boiling resistance.
Coupling agent KH-550, KH-560 can significantly improve water-fast, the ethanol-tolerant improving soaking of film, but due to KH-550
For amino silane, after high-temperature baking solidification, film xanthochromia is serious, and KH-570 is less to film ethanol-tolerant performance boost.KH-
, when 1%～2% (accounting for paint liquid total amount), film is water-fast, the change of ethanol-tolerant improving soaking is obvious, when its consumption increases for 560 additions
During to more than 2%, performance boost tends towards stability, and to improve water-fast, the ethanol-tolerant leaching of film now by the consumption increasing coupling agent
Bubble performance is meaningless.More than synthesis, the dosage of KH-560 is advisable 1%～2%.
Using appearance of film after the baking paint of water-base resin preparation preferably, hardness is high, and adhesive force is good, ethanol-tolerant and resistance to boiling
Decocting in water excellent performance, coating ply adhesion meets requirement, can be applicable to glass coating.
Adopt water-based hydroxyl acrylate be film forming binder, with amino resins and watersoluble closed type cured with isocyanates
Agent, as composite curing agent system, using epoxiess siloxanes as adhesion promoter, prepares glass baseplate water paint,
Prepared coating has good outward appearance, and coating shows excellent water-fast, ethanol-tolerant and soaks and water boiling resistance performance, can be applicable to
All kinds of glass baseplates.
Claims (4)
1. a kind of preparation method of water paint is it is characterised in that comprise the steps：
（1）Add solvent propylene glycol methyl ether in the four-hole bottle equipped with agitator and condenser, be warming up to 140 DEG C；
（2）The hydroxyethyl methylacrylate of Deca mixing, acrylic acid, styrene, Isooctyl acrylate monomer and dibenzoyl peroxide,
Be incubated 2h after completion of dropwise addition, add in dimethylethanolamine and after the emulsifying that adds water obtain intermediate product；
（3）Take intermediate product, Deca monomer and initiator hydroxyethyl methylacrylate, be incubated 5h discharging after completion of dropwise addition, obtain
Water based acrylic resin HWPA；
（4）Bulk aqueous resin HWPA, mixing cosolvent, color stuffing, levelling agent, nertralizer are put into scuffing of cylinder bore, after disperseing at a high speed
It is ground；
（5）Add deionized water and firming agent, discharging after high-speed stirred, adjustment solid divides, and filtering and discharging prepares aqueouss
Glass coating.
2. water paint according to claim 1 preparation method it is characterised in that：The fineness control of described grinding is less than
Equal to 30 μm.
3. water paint according to claim 1 preparation method it is characterised in that：Described water based acrylic resin
The solid content of HWPA is 45%.
4. water paint according to claim 1 preparation method it is characterised in that：Described water based acrylic resin
The hydroxy radical content of HWPA is 2.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096216.8A CN106479343A (en) | 2016-12-02 | 2016-12-02 | A kind of preparation method of water paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096216.8A CN106479343A (en) | 2016-12-02 | 2016-12-02 | A kind of preparation method of water paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106479343A true CN106479343A (en) | 2017-03-08 |
Family
ID=58275719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611096216.8A Pending CN106479343A (en) | 2016-12-02 | 2016-12-02 | A kind of preparation method of water paint |
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| CN (1) | CN106479343A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474216A (en) * | 2017-09-19 | 2017-12-15 | 立邦工业涂料(上海)有限公司 | A kind of soluble polyurethane modified acrylic polymer, preparation method and applications |
| CN108707408A (en) * | 2018-06-20 | 2018-10-26 | 上海维度化工科技有限公司 | A kind of high finish coat varnish of aqueous polyurethane and preparation method thereof |
| CN111848922A (en) * | 2020-07-23 | 2020-10-30 | 深圳飞扬兴业科技有限公司 | Water-based isocyanate curing agent, preparation method and application thereof |
-
2016
- 2016-12-02 CN CN201611096216.8A patent/CN106479343A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474216A (en) * | 2017-09-19 | 2017-12-15 | 立邦工业涂料(上海)有限公司 | A kind of soluble polyurethane modified acrylic polymer, preparation method and applications |
| CN107474216B (en) * | 2017-09-19 | 2020-10-02 | 立邦工业涂料(上海)有限公司 | Water-soluble polyurethane modified acrylic polymer, preparation method and application thereof |
| CN108707408A (en) * | 2018-06-20 | 2018-10-26 | 上海维度化工科技有限公司 | A kind of high finish coat varnish of aqueous polyurethane and preparation method thereof |
| CN111848922A (en) * | 2020-07-23 | 2020-10-30 | 深圳飞扬兴业科技有限公司 | Water-based isocyanate curing agent, preparation method and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170308 |
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| WD01 | Invention patent application deemed withdrawn after publication |