CN107236405A - A kind of aqueous PU varnish - Google Patents
A kind of aqueous PU varnish Download PDFInfo
- Publication number
- CN107236405A CN107236405A CN201611153082.9A CN201611153082A CN107236405A CN 107236405 A CN107236405 A CN 107236405A CN 201611153082 A CN201611153082 A CN 201611153082A CN 107236405 A CN107236405 A CN 107236405A
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- Prior art keywords
- aqueous
- varnish
- agent
- water
- varnish according
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a kind of aqueous PU varnish, belong to water paint field, including following material component, the mass percent of each component is water-based hydroxyl acrylic emulsion 60~65%；Aqueous wetting agent 2~3%；Aqueous defoamer 0.5~1%；Aqueous levelling agent 1~2%；Aqueous auxiliary rheological agents 2~3%；Deionized water 20~25%.The present invention is nonpoisonous and tasteless, and component is relatively simple, can greatly reduce environmental pollution, is beneficial to safeguard health.
Description
Technical field
The present invention relates to water paint field, a kind of aqueous PU varnish is specifically related to.
Background technology
PU paint be all polyurethane coatings general designation, its thin film-forming method be nature film forming and low-temperature bake film forming, without
Special process.Polyurethane paint is two-component chemical constitution：Component A（Curing agent）NCO（-NCO）+ B component（Paint）'s
Hydroxyl（-OH）=polyurethane.PU paints are divided into curing type and two liquid types, and with adhesive force is good, gloss is high, hardness is high, pliability is good
Advantage.
Aqueous PU varnish start not by masses approve, very big suspection state is always held for this new product people
Degree, is often had producer to add organic solvent or diluent such as toluene, butanone in aqueous paint using initial stage and causes many unnecessary troubles.
Until the middle and later periods nineties in last century, including technology transfer, the various modes such as investment is founded the factory, external each famous brand is entered one after another
Enter China, based on metope emulsion paint.As advertising and practical function are slowly just received by people.The beginning of this century,
With the improvement of people ' s living standards, the enhancing of environmental consciousness, the environmental policy along with country make the transition, and perform sustainable development
Exhibition, aqueous paint is just developed.Traditional solvent-thinned paint is also easy to produce volatile harmful material, seriously threatens the body of people
Health, so, aqueous PU varnish replaces solvent-borne type PU varnish to turn into inexorable trend.
Aqueous PU varnish hardness reaches H-2H, with excellent paint film property, almost has phase with solvent borne polyurethane coating
Same paint film property, ageing-resistant performance, solvent resistance, chemicals-resistant corrosivity, anti-wear performance are all very good, can keep long
Time tough and tensile film effect.Permanent usability can be kept by being coated on appliance shell, be that environmental protection and safety type aqueous dual-component is clear
Paint, the sharp aroma without solvent based coating.It is nonflammable, non-explosive, it can be applied to automotive upholstery, air-conditioning, washing machine.It is aqueous
PU varnish recoatability is good, pot-life length, coating surface be not easy to foaming, solves that traditional solvent-borne coating recoatability is poor, pot-life
The problem of short, coating surface easily bubbles.
At present, aqueous PU varnish on the market is added with auxiliary ingredients such as coalescents, dispersants, and its component is complicated
Not environmentally.
The content of the invention
1. the technical problem to be solved
The technical problem to be solved in the present invention is to provide a kind of component relatively simple environment-friendly water-based PU varnish.
2. technical scheme
To solve the above problems, the present invention is adopted the following technical scheme that：
A kind of aqueous PU varnish, including following material component, the mass percent of each component is：
Water-based hydroxyl acrylic emulsion 60~65%；
Aqueous wetting agent 2~3%；
Aqueous defoamer 0.5~1%；
Aqueous levelling agent 1~2%；
Aqueous auxiliary rheological agents 2~3%；
Deionized water 20~25%.
Preferably, the composition of the water-based hydroxyl acrylic emulsion is：Hydroxyl 100mgKOH/g, acid number is less than 15mgKOH/
G, emulsifier is less than 1%, and the ratio of isocyanates and hydroxyl is 1.5:1.
Preferably, the aqueous wetting agent is organic-silicon-modified wetting agent.
Preferably, the aqueous defoamer is Polyether Modified Polysiloxanes Defoaming Agent or mineral oil antifoam agent.
Preferably, the aqueous levelling agent is organosilicon levelling agent.
Preferably, the aqueous auxiliary rheological agents are the polyurethane associative thickener by hydrophobically modified.
Preferably, that to be reverse osmosis treatment equipment be combined the deionized water with ion-exchange unit is obtained.
3. beneficial effect
（1）The present invention wetting agent, defoamer, levelling agent and auxiliary rheological agents only necessary to addition water varnish, component are more simple
It is single, advantageously reduce cost.
（2）Of the invention many using hydroxy acrylic acid paint ingredient, hydroxy acrylic acid coating is that a class is alternately connected by OH and NCO
Knot composition skeleton, the general designation of different hydroxyl groups again with the NCO polymer linked, is with acrylate copolymer or its modified poly
Thing is the coating of main membrane substance, with excellent weather-proof, heat-resisting, cold-resistant, water-fast, wear-resisting, stain resistant, it is resistant to chemical etching, etc.
Property.
（3）The each component that the present invention is used be applied to it is aqueous, and without the harmful substance such as formaldehyde, benzene homologues, heavy metal,
It is beneficial to safeguard health, the feature of environmental protection is good.
The present invention is diluted with water non-ignitable not quick-fried；The potential safety hazard in production, transportation is prevented；With richness it is high,
It is the advantages of wear-resisting, ethanol-tolerant, high surface gloss, good to the adhesive force of ABS, PC ground；, can and component of the present invention is relatively simple
Significantly less environmental pollution, is beneficial to safeguard health.
Embodiment
Below in conjunction with embodiments of the invention, technical scheme is described further, it is clear that described
Embodiment be only the present invention a part of embodiment, rather than whole embodiment.Based on the embodiment in the present invention, sheet
The every other embodiment that those of ordinary skill in field is obtained on the premise of creative work is not made, all belongs to
In the scope of protection of the invention.
A kind of aqueous PU varnish, including following material component, the mass percent of each component is：
Water-based hydroxyl acrylic emulsion 60~65%；
Aqueous wetting agent 2~3%；
Aqueous defoamer 0.5~1%；
Aqueous levelling agent 1~2%；
Aqueous auxiliary rheological agents 2~3%；
Deionized water 20~25%.
Further, the composition of the water-based hydroxyl acrylic emulsion is：Hydroxyl value 100mgKOH/g, acid number is less than
15mgKOH/g, emulsifier is less than 1%, and the ratio of isocyanates and hydroxyl is 1.5:1.In view of hydroxyl value, acid number, emulsification
Influence and Cost Problems of the ratio of agent, isocyanates and hydroxyl to water varnish filming performance, this is hydroxyl acrylic emulsion
Optimal composition proposal.
Further, the aqueous wetting agent is organic-silicon-modified wetting agent.Waterborne organic silicon, which is modified wetting agent, has pole
Low surface tension, excellent substrate wetting, good penetrability can prevent shrinkage cavity.
Further, the aqueous defoamer is Polyether Modified Polysiloxanes Defoaming Agent.Defoamer is insoluble in frothing media
Material, it can with drop or wrap up solid particle drop or solid particle in the form of be dispersed in the medium of foaming.
Defoamer has lower surface tension than frothing media, spontaneously can make bubbles burst into liquid film.Wherein organosilicon should
Higher with being worth, application field is also quite varied.
Further, the aqueous levelling agent is organosilicon levelling agent.Organosilicon levelling agent has two significant properties：One is
It can accomplish to significantly reduce the surface tension of coating, improve the ground wettability of coating and the mobility of paint film, eliminate vortex
So as to prevent from growing dim；Two be that can improve the flatness, scratch resistance and resistance to blocking of coating.
Further, the aqueous auxiliary rheological agents are the polyurethane associative thickener by hydrophobically modified.It can improve
The rheological property of coating.
Further, that to be reverse osmosis treatment equipment be combined the deionized water with ion-exchange unit is obtained.Profit
The deionized water pollution produced with such a mode is small, and automaticity is high, and initial stage, input was medium, moderate.
With reference to specific embodiment, the invention will be further described.
Table 1 is that the content of each raw material components in the proportioning of each raw material components in embodiment 1~4, table is parts by weight.
The weight proportion of each raw material components in embodiment 1~4
Table 1
Embodiment 1
Water-based hydroxyl acrylic emulsion 60kg is weighed, is put into dispersion cylinder, stirring is opened；
The aqueous wetting agent 2kg weighed, aqueous defoamer 500g, aqueous levelling agent 1kg, water are sequentially added in whipping process
Property auxiliary rheological agents 2kg, deionized water 20kg, stir, that is, obtain a kind of aqueous PU varnish.
Embodiment 2
Water-based hydroxyl acrylic emulsion 62kg is weighed, is put into dispersion cylinder, stirring is opened；
The aqueous wetting agent 2.3kg weighed, aqueous defoamer 600g, aqueous levelling agent are sequentially added in whipping process
1.2kg, aqueous auxiliary rheological agents 2.4kg, deionized water 22kg, are stirred, that is, obtain a kind of aqueous PU varnish.
Embodiment 3
Water-based hydroxyl acrylic emulsion 64kg is weighed, is put into dispersion cylinder, stirring is opened；
The aqueous wetting agent 2.8kg weighed, aqueous defoamer 800g, aqueous levelling agent are sequentially added in whipping process
1.8kg, aqueous auxiliary rheological agents 2.7kg, deionized water 24kg, are stirred, that is, obtain a kind of aqueous PU varnish.
Embodiment 4
Water-based hydroxyl acrylic emulsion 65kg is weighed, is put into dispersion cylinder, stirring is opened；
The aqueous wetting agent 3kg weighed, aqueous defoamer 1kg, aqueous levelling agent 2kg, water are sequentially added in whipping process
Property auxiliary rheological agents 3kg, deionized water 25kg, stir, that is, obtain a kind of aqueous PU varnish.
Testing partial performances are carried out to the aqueous PU varnish of gained in embodiment 1~4, as a result such as table 2.
The partial properties testing result of the aqueous PU varnish of gained in embodiment 1~4
Table 2
The adhesive force for the aqueous PU varnish that embodiment 1~4 is obtained, water resistance, wearability meet the requirements as can be seen from Table 2；
And its surface gloss is higher, more than 92 degree are reached.
In summary, instant component is relatively simple, good environmental protection, does not contain the harmful substances such as formaldehyde, benzene, is beneficial to
Safeguard health.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (7)
1. a kind of aqueous PU varnish, it is characterised in that：Including following material component, the mass percent of each component is：
Water-based hydroxyl acrylic emulsion 60~65%；
Aqueous wetting agent 2~3%；
Aqueous defoamer 0.5~1%；
Aqueous levelling agent 1~2%；
Aqueous auxiliary rheological agents 2~3%；
Deionized water 20~25%.
2. a kind of aqueous PU varnish according to claim 1, it is characterised in that the group of the water-based hydroxyl acrylic emulsion
Cheng Shi：Hydroxyl 100mgKOH/g, acid number is less than 15mgKOH/g, and emulsifier is less than 1%, the ratio of isocyanates and hydroxyl
For 1.5:1.
3. a kind of aqueous PU varnish according to claim 1, it is characterised in that the aqueous wetting agent is organic-silicon-modified
Wetting agent.
4. a kind of aqueous PU varnish according to claim 1, it is characterised in that the aqueous defoamer has to be polyether-modified
Machine silicon defoaming agent or mineral oil antifoam agent.
5. a kind of aqueous PU varnish according to claim 1, it is characterised in that the aqueous levelling agent is acrylic acid levelling
Agent.
6. a kind of aqueous PU varnish according to claim 1, it is characterised in that the aqueous auxiliary rheological agents are by hydrophobic
Modified polyurethane associative thickener.
7. a kind of aqueous PU varnish according to claim 1, it is characterised in that the deionized water is that reverse-osmosis treated is set
It is obtained for being combined with ion-exchange unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153082.9A CN107236405A (en) | 2016-12-14 | 2016-12-14 | A kind of aqueous PU varnish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153082.9A CN107236405A (en) | 2016-12-14 | 2016-12-14 | A kind of aqueous PU varnish |
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| CN107236405A true CN107236405A (en) | 2017-10-10 |
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ID=59983931
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| CN201611153082.9A Pending CN107236405A (en) | 2016-12-14 | 2016-12-14 | A kind of aqueous PU varnish |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936736A (en) * | 2017-11-16 | 2018-04-20 | 鹤山市米奇涂料有限公司 | Single-component water-based white light top coat top coat |
| CN107974146A (en) * | 2017-11-16 | 2018-05-01 | 鹤山市米奇涂料有限公司 | Fiberglass PU based white primers |
| CN109468000A (en) * | 2018-08-31 | 2019-03-15 | 杭州立威化工涂料有限公司 | High-performance environment-friendly aqueous one-component finishing coat and production technology on a kind of plastic rubber substrate |
| CN110343422A (en) * | 2019-07-15 | 2019-10-18 | 深圳市美丽华科技股份有限公司 | A kind of aqueous PC ink and preparation method thereof |
| CN112111215A (en) * | 2020-09-27 | 2020-12-22 | 烨箭环保科技(湖州)有限公司 | Water-based PU varnish process and device |
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| FR2630353B1 (en) * | 1988-04-25 | 1990-08-24 | Jival Sa Peintures | ANTI-GRAFFITI COATING SYSTEM |
| CN102443333A (en) * | 2011-09-20 | 2012-05-09 | 嘉宝莉化工集团股份有限公司 | High solid content acrylic varnish, and preparation method and application thereof |
| CN104031233A (en) * | 2014-05-26 | 2014-09-10 | 北京红狮漆业有限公司 | Acrylic polyurethane emulsion as well as preparation method and application thereof |
| CN104194604A (en) * | 2014-09-16 | 2014-12-10 | 江苏天诚车饰科技有限公司 | Two-component waterborne polyurethane automotive topcoat |
| CN105061665A (en) * | 2015-07-31 | 2015-11-18 | 华南理工大学 | Hydroxypolyacrylate emulsion, and preparation method and application thereof |
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2016
- 2016-12-14 CN CN201611153082.9A patent/CN107236405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2630353B1 (en) * | 1988-04-25 | 1990-08-24 | Jival Sa Peintures | ANTI-GRAFFITI COATING SYSTEM |
| CN102443333A (en) * | 2011-09-20 | 2012-05-09 | 嘉宝莉化工集团股份有限公司 | High solid content acrylic varnish, and preparation method and application thereof |
| CN104031233A (en) * | 2014-05-26 | 2014-09-10 | 北京红狮漆业有限公司 | Acrylic polyurethane emulsion as well as preparation method and application thereof |
| CN104194604A (en) * | 2014-09-16 | 2014-12-10 | 江苏天诚车饰科技有限公司 | Two-component waterborne polyurethane automotive topcoat |
| CN105061665A (en) * | 2015-07-31 | 2015-11-18 | 华南理工大学 | Hydroxypolyacrylate emulsion, and preparation method and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936736A (en) * | 2017-11-16 | 2018-04-20 | 鹤山市米奇涂料有限公司 | Single-component water-based white light top coat top coat |
| CN107974146A (en) * | 2017-11-16 | 2018-05-01 | 鹤山市米奇涂料有限公司 | Fiberglass PU based white primers |
| CN109468000A (en) * | 2018-08-31 | 2019-03-15 | 杭州立威化工涂料有限公司 | High-performance environment-friendly aqueous one-component finishing coat and production technology on a kind of plastic rubber substrate |
| CN110343422A (en) * | 2019-07-15 | 2019-10-18 | 深圳市美丽华科技股份有限公司 | A kind of aqueous PC ink and preparation method thereof |
| CN112111215A (en) * | 2020-09-27 | 2020-12-22 | 烨箭环保科技(湖州)有限公司 | Water-based PU varnish process and device |
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Application publication date: 20171010 |