CN103102792B - Aqueous double-component polyurethane low luster coating and preparation method thereof - Google Patents
Aqueous double-component polyurethane low luster coating and preparation method thereof Download PDFInfo
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- CN103102792B CN103102792B CN201310060251.4A CN201310060251A CN103102792B CN 103102792 B CN103102792 B CN 103102792B CN 201310060251 A CN201310060251 A CN 201310060251A CN 103102792 B CN103102792 B CN 103102792B
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Abstract
The invention discloses a kind of aqueous double-component polyurethane low luster coating, belong to building coating field.The present invention is made up of component one and component two.Component one comprises following each raw material by mass percentage: Hydroxylated acrylic resin, dispersion agent, flow agent, defoamer, scratch resistance auxiliary agent, surface modifier, thickening material; Component two comprises isocyanate curing agent.The OH of component one and the NCO ratio of component two are 1.3-2.3.The method obtains coating after mixing by a certain percentage by component one and component two.This coating contains ammonia ester bond, the performances such as have chemical-resistant, hardness is high, wear resistance, weathering resistance, and gloss is low.The production method of this coating is simple, and constructing operation is convenient, can be used as floor coating or wallcovering use.
Description
Technical field
The invention belongs to building coating preparation field, particularly relate to a kind of for ground and the high-performance of metope, the aqueous double-component polyurethane low luster coating of environment-friendly type and preparation method thereof.
Background technology
Along with the development of technology, the enhancing of people's environmental consciousness and the promotion guiding of national policy, water-borne coatings more and more receives publicity, and wherein aqueous double-component polyurethane coating is with the physical and chemical performance of its excellence, becomes the focus of present water-borne coatings research and development.
Coating gloss is the important factor affecting coating surface performance, in metope and floor coating application, if gloss is too high, can cause the reflection of the light source such as light, sunlight serious, detrimentally affect is produced to personnel's eyesight or psychology, meanwhile, gloss is too high, is also unfavorable for the expression of coatings decoration effect.
Summary of the invention
The object of embodiment of the present invention is to make up the weak point that prior art exists, and provides aqueous double-component polyurethane low luster coating of a kind of simple for production, excellent performance, long service life and preparation method thereof.
The object of embodiment of the present invention is achieved through the following technical solutions:
Embodiment of the present invention provides a kind of aqueous double-component polyurethane low luster coating, and this coating comprises component one and component two, and wherein, described component one comprises following each raw material, and the consumption sum measuring each raw material is by mass percentage 100%:
Component two is isocyanate curing agent, and in described coating, component one with the weight proportion of component two is: component one: component two is 3 ~ 6:1.
Embodiment of the present invention also provides a kind of preparation method of aqueous double-component polyurethane low luster coating, comprising:
Each raw material of component one, two is got by formula of the present invention;
Prepare component one: add in the dispersion cylinder of band dispersion machine by the Hydroxylated acrylic resin in component one raw material, the water that accounts for water gross weight 40%, disperse 10 ~ 20 minutes under the rotating speed of 400 ~ 600rpm; Then add dispersion agent, account for the defoamer of defoamer gross weight 50%, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 20 minutes, dispersion rotating speed is down to 500 ~ 800rpm, flatting silica is added again under whipped state, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion to fineness is less than 30 microns, dispersion rotating speed is down to 500 ~ 800rpm, add flow agent, scratch resistance auxiliary agent, antifreezing agent, remaining defoamer and remaining water, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 30 minutes, namely obtains the component one of aqueous double-component polyurethane low luster coating;
Using component one and the isocyanate curing agent as component two, in component one and the weight proportion of component two be: component one: component two is namely obtain aqueous double-component polyurethane low luster coating after the ratio of 3 ~ 6:1 is allocated.
As can be seen from the above-mentioned technical scheme provided, embodiment of the present invention is reacted by the solidifying agent of the Hydroxylated acrylic resin in component one and component two, form the tridimensional network paint film of crosslinking curing, the paint film of this pair of component ambient cure, surface compact, hardness is good, good surface effect can be provided, coordinate dispersion agent, defoamer, flow agent, scratch resistance auxiliary agent and surface modifier simultaneously, make this coating have good physical and chemical performance, the effect of clean environment firendly and dumb light.
Embodiment
Be clearly and completely described the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Below the embodiment of the present invention is described in further detail.
Embodiment one
The embodiment of the present invention provides a kind of aqueous double-component polyurethane low luster coating, this coating has the function of high-efficiency environment friendly and dumb light, this coating comprises component one and component two, and component one comprises following each raw material, and the consumption sum measuring each raw material is by mass percentage 100%:
Component two adopts isocyanate curing agent, and in above-mentioned coating, component one with the weight proportion of component two is: component one: component two is 3 ~ 6:1.
In above-mentioned coating, the Hydroxylated acrylic resin in component one adopts polymer emulsion, and its hydroxy radical content is 1% ~ 7%.The Hydroxylated acrylic resin used in component one can form ammonia ester bond after solidification, has stable chemical property, does not decompose, show its superior weather resistance, weather resistant, chemical-resistant under acid, alkali and uviolizing.
In above-mentioned coating, antifreezing agent in component one adopt in ethylene glycol, propylene glycol one or both.
In above-mentioned coating, the dispersion agent in component one adopts the main modified polyurethane dispersion agent product containing modified polyurethane composition, and dispersion agent specifically can adopt one or more in ionic dispersant, high-molecular type dispersing agent.
In above-mentioned coating, in component one, the consumption that also can comprise by mass percentage is the thickening material of 0.1 ~ 1.5%, and thickening material can adopt one or more in Natvosol, alkali swelling type thickening material, polyurethane-type thickening material.
In above-mentioned coating, in component one, the consumption that also can comprise by mass percentage is the color stuffing of 1.0 ~ 40%.
In above-mentioned coating, the flow agent in component one adopts one or more in fluorine-carbon modified polymkeric substance, acrylic acid modified polymkeric substance, polysiloxane-modified compound.This flow agent is conducive to paint film good levelling effect in the process of film forming, also has the sticking power etc. of good anti-shrinkage cavity function and increase paint film and ground.
In above-mentioned coating, the defoamer in component one adopts containing silicon defoamer;
In above-mentioned coating, the scratch resistance auxiliary agent in component one adopts tetrafluoroethylene class surface modifier, coating surface can be made to form superpower scratch resistance function, to ensure the wear resisting property of product.
In above-mentioned coating, the surface modifier in component one adopts silicone based surface modifier; This auxiliary agent and other material have good compatibility, can form a part for paint film, provide permanent slippery and adhesion strength together with paint film.
In above-mentioned coating, flatting silica in component one adopt in organic flatting silica, aerosil class flatting silica one or both.
In above-mentioned coating, the solidifying agent of component two adopts aliphatic polymeric polyisocyanate class solidifying agent.
The embodiment of the present invention also provides a kind of preparation method of aqueous double-component polyurethane low luster coating, comprising:
Each raw material of component one, two is got by formula;
Prepare component one: add in the dispersion cylinder of band dispersion machine by the Hydroxylated acrylic resin in component one raw material, the water that accounts for water gross weight 40%, disperse 10 ~ 20 minutes under the rotating speed of 400 ~ 600rpm; Then add dispersion agent, account for the defoamer of defoamer gross weight 50%, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 20 minutes, dispersion rotating speed is down to 500 ~ 800rpm, flatting silica is added again under whipped state, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion to fineness is less than 30 microns, dispersion rotating speed is down to 500 ~ 800rpm, add remaining defoamer, flow agent, scratch resistance auxiliary agent, antifreezing agent and remaining water, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 30 minutes, namely obtains the component one of aqueous double-component polyurethane low luster coating;
Using component one and the isocyanate curing agent as component two, in component one and the weight proportion of component two be: component one: component two is namely obtain aqueous double-component polyurethane low luster coating after the ratio of 3 ~ 6:1 is allocated.
In aforesaid method, if also comprise thickening material in component one, then thickening material and dispersion agent and the part defoamer that adds first together add.
In aforesaid method, if also comprise color stuffing in component one, then color stuffing and flatting silica together add.
Embodiment two
The present embodiment provides a kind of aqueous double-component polyurethane low luster coating, a kind of transparent varnish coating for building, there is wear-resisting matte effect, this coating comprises component one and component two, wherein, component one comprises: Hydroxylated acrylic resin, water, modified polyurethane dispersant, fluorine-carbon modified polymkeric substance flow agent, silicone based defoamer, tetrafluoroethylene class scratch resistance auxiliary agent, each raw material of silicone based surface modifier, and each raw material dosage sum is 100% by mass percentage:
Component two adopts polymeric polyisocyanate class solidifying agent, and in coating, the proportioning (weight ratio) of component one and component two is: component one: component two=5:1.
Above-mentioned aqueous double-component polyurethane low luster coating preparation method is:
The each raw material of component one is got by above-mentioned formula;
Prepare component one: add in the dispersion cylinder of band dispersion machine by Hydroxylated acrylic resin 1, Hydroxylated acrylic resin 2, the water that accounts for total amount 10%, disperse 10 minutes under the rotating speed of 400rpm, then dispersion agent is added, defoamer, thickening material, under the rotating speed of 1400rpm, high speed dispersion is after 20 minutes, dispersion rotating speed is down to 500rpm, flatting silica is added again under whipped state, under the rotating speed of 1700rpm, high speed dispersion to fineness is less than 30 microns, dispersion rotating speed is down to 500rpm, add flow agent, scratch resistance auxiliary agent, antifreezing agent and remaining water, under the rotating speed of 1500rpm, high speed dispersion is after 30 minutes, namely the component one of aqueous double-component polyurethane low luster coating is obtained, using component one and the solidifying agent as component two, by component one: namely obtain aqueous double-component polyurethane low luster coating after the part by weight allotment of component two=5:1.
In reality, obtained component one and component two are packed respectively, during use, then obtain spendable aqueous double-component polyurethane low luster coating after the part by weight allotment of 5:1 according to the above ratio.
Test above-mentioned obtained anti-doodling and anti-affixing coating and paint film property, result is as following table:
Embodiment three
The embodiment of the present invention provides a kind of aqueous double-component polyurethane low luster coating, it is a kind of whitewash for building, there is weather-proof, the effect such as decoration, dumb light, this coating comprises component one and component two, wherein, component one comprises: Hydroxylated acrylic resin, water, modified polyurethane dispersant, fluorine-carbon modified polymkeric substance flow agent, silicone based defoamer, tetrafluoroethylene class scratch resistance auxiliary agent, titanium dioxide, each raw material of silicone based surface modifier, and the consumption sum of each raw material is 100% by mass percentage:
Component two adopts polymeric polyisocyanate class solidifying agent, and in coating, the proportioning (weight ratio) of component one and component two is: component one: component two is 6:1.
The preparation method of above-mentioned aqueous double-component polyurethane low luster coating and the substantially identical of embodiment one, be not repeated.
Embodiment four
The embodiment of the present invention provides a kind of aqueous double-component polyurethane low luster coating; it is a kind of building coating; there is wear-resisting, dumb light, the internally coated effect of protection; it is a kind of transparent varnish colour; this coating comprises component one and component two; wherein; component one comprises: Hydroxylated acrylic resin, water, modified polyurethane dispersant, fluorine-carbon modified polymkeric substance flow agent, silicone based defoamer, tetrafluoroethylene class scratch resistance auxiliary agent, each raw material of silicone based surface modifier, and the consumption sum of each raw material is 100% by mass percentage:
Component two adopts polymeric polyisocyanate class solidifying agent, and in coating, the proportioning (weight ratio) of component one and component two is: component one: component two is 4:1.
The preparation method of above-mentioned aqueous double-component polyurethane low luster coating and the substantially identical of embodiment one, be not repeated.
Dispersion agent in the aqueous double-component polyurethane low luster coating that the various embodiments described above obtain is a kind of surfactant, can disperse and various materials in stabilising system; The bubble generated in production process and in construction process eliminated by defoamer.Coating is made to have the apparent effect of good stability in storage, application property and paint film; Flow agent helps filmogen in the process of drying and forming-film, occur reasonable levelling surface effect; Scratch resistance auxiliary agent is a kind of surface modifier of tetrafluoroethylene class, can rest on coating surface after coating film forming, and improves the adhesion strength of coating surface; Surface modifier is the silicone based surface modifier of Switzerland's vapour Bagong department; The Hydroxylated acrylic resin of solidifying agent mainly and in component one reacts, and form the tridimensional network paint film of crosslinking curing, the paint film of this pair of component ambient cure, surface compact, hardness is good, can provide good surface effect.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. an aqueous double-component polyurethane low luster coating, is characterized in that, this coating comprises component one and component two, and wherein, described component one comprises following each raw material, and the consumption sum measuring each raw material is by mass percentage 100%:
All the other are water;
Described scratch resistance auxiliary agent adopts tetrafluoroethylene class surface modifier;
Described flatting silica adopt in organic flatting silica, aerosil class flatting silica one or both;
Component two is isocyanate curing agent, and in described coating, component one with the weight proportion of component two is: component one: component two is 1:3 ~ 6.
2. coating according to claim 1, is characterized in that, the Hydroxylated acrylic resin in described component one adopts polymer emulsion, and its hydroxy radical content is 1% ~ 7%.
3. coating according to claim 1, is characterized in that, described antifreezing agent adopt in ethylene glycol, propylene glycol one or both.
4. coating according to claim 1, is characterized in that, described dispersion agent adopts one or more in ionic dispersant, high-molecular type dispersing agent;
Described defoamer adopts containing silicon defoamer;
Described flow agent adopts one or more in fluorine-carbon modified polymkeric substance, acrylic acid modified polymkeric substance, polysiloxane-modified compound.
5. coating according to claim 1, is characterized in that,
Described surface modifier adopts silicone based surface modifier.
6. coating according to claim 1, is characterized in that, described component one also comprises:
Thickening material, its consumption is 0.1 ~ 1.5% by mass percentage.
7. coating according to claim 6, is characterized in that, described thickening material adopts: one or more in Natvosol, alkali swelling type thickening material, polyurethane-type thickening material.
8. coating according to claim 1, is characterized in that, described component one also comprises:
Color stuffing, its consumption is 1.0 ~ 40% by mass percentage.
9. coating according to claim 1, is characterized in that,
Described isocyanate curing agent adopts aliphatic polymeric polyisocyanate class solidifying agent.
10. a preparation method for aqueous double-component polyurethane low luster coating, is characterized in that, comprising:
Each raw material of component one, two is got by the formula any one of the claims 1 ~ 9;
Prepare component one: add in the dispersion cylinder of band dispersion machine by the Hydroxylated acrylic resin in component one raw material, the water that accounts for water gross weight 40%, disperse 10 ~ 20 minutes under the rotating speed of 400 ~ 600rpm; Then add dispersion agent, account for the defoamer of defoamer gross weight 50%, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 20 minutes, dispersion rotating speed is down to 500 ~ 800rpm, flatting silica is added again under whipped state, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion to fineness is less than 30 microns, dispersion rotating speed is down to 500 ~ 800rpm, add remaining defoamer, flow agent, scratch resistance auxiliary agent, antifreezing agent and remaining water, under the rotating speed of 1200 ~ 2000rpm, high speed dispersion is after 30 minutes, namely obtains the component one of aqueous double-component polyurethane low luster coating;
Using component one and the isocyanate curing agent as component two, in component one and the weight proportion of component two be: component one: component two is namely obtain aqueous double-component polyurethane low luster coating after the ratio of 3 ~ 6:1 is allocated;
If also comprise thickening material in said components one, then thickening material and dispersion agent and the part defoamer that adds first together add;
If also comprise color stuffing in said components one, then color stuffing and flatting silica together add.
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| CN114213949A (en) * | 2021-12-21 | 2022-03-22 | 福建省三棵树新材料有限公司 | Waterborne epoxy modified acrylic acid two-component transparent coating for medals and preparation method thereof |
| CN114231143A (en) * | 2021-12-23 | 2022-03-25 | 上海三棵树防水技术有限公司 | Water-based two-component polyurethane anti-doodling finishing varnish and preparation method thereof |
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| CN102516858A (en) * | 2011-12-06 | 2012-06-27 | 中南大学 | Dual-component aqueous polyurethane paint with scrawling resistance and pasting resistance and preparation thereof |
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