CN103820018A - Decorative protection coating material, coating thereof and preparation methods of the coating material and the coating - Google Patents
Decorative protection coating material, coating thereof and preparation methods of the coating material and the coating Download PDFInfo
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- CN103820018A CN103820018A CN201410071797.4A CN201410071797A CN103820018A CN 103820018 A CN103820018 A CN 103820018A CN 201410071797 A CN201410071797 A CN 201410071797A CN 103820018 A CN103820018 A CN 103820018A
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Abstract
The invention provides a decorative protection coating material, a coating thereof and preparation methods of the coating material and the coating. The decorative protection coating material comprises, based on the total weight of the coating material, 50-70 wt% of polyether type waterborne polyurethane, 0.01-1 wt% of pearl powder, 0.1-2 wt% of a thickening agent, and an aqueous solvent. The thickening agent is diphenylmethane diisocyanate type polyurethane, hydrophobic modified alkaline-soluble acrylic acid type polymer or a composition thereof. The coating prepared from the coating material has excellent decoration performances or glittering effects and good peelability.
Description
Technical field
The present invention relates to a kind of ornamental protective cover and coating thereof and their preparation method.
Background technology
Protective coating has a wide range of applications, and its filmogen mainly comprises aqueous polyurethane, polyacrylate resin, epoxy resin, unsaturated polyester resin, urethane resin etc.
Aqueous polyurethane is the new polyurethane system using water to replace organic solvent as dispersion medium, also claims water dispersible polyurethane, aqueous polyurethane or waterbased urethane.That aqueous polyurethane has is pollution-free, safe and reliable, mechanical property is good, consistency good, be easy to the advantages such as modification.
WO200481074 has disclosed a kind of strippable protective coating, comprises the molecular structure of aqueous polyurethane.WO2007/108905 has mentioned a kind of aqueous polyurethane coating, and mentions a kind of special linking agent, to improve curing speed.WO2011089153 has disclosed a kind of polyurethane-base coating, and this coating can recycle.JP2000198921 has disclosed a kind of strippable aqueous polyurethane coating, and the synthon of aqueous polyurethane is set forth.But these patents all do not relate to the decorate properties of protective coating.
Summary of the invention
The present invention aims to provide a kind of ornamental protective cover and coating and preparation method, and the ornamental supercoat of being prepared by this ornamental protective cover not only has excellent decorate properties or flash effect, and has good rippability.
One aspect of the present invention provides a kind of ornamental protective cover; it comprises polyether type aqueous urethane, pearlescence, thickening material and aqueous solvent; the wherein gross weight based on described coating; the content of described polyether type aqueous urethane is 50-70 % by weight; the content of described pearlescence is 0.01-1 % by weight; the content of described thickening material is 0.1-2 % by weight, and described thickening material is selected from one or more in following group: the caustic solubility acrylic acid polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.
In a preferred embodiment of ornamental protective cover of the present invention, described coating also comprises additive, and described additive is selected from one or more in following group: rheology modifier, dispersion agent, wetting agent and defoamer.
In a preferred embodiment of ornamental protective cover of the present invention, the content of described polyether type aqueous urethane is 55-65 % by weight.
In a preferred embodiment of ornamental protective cover of the present invention, the content of described pearlescence is 0.1-0.5 % by weight.
In a preferred embodiment of ornamental protective cover of the present invention, described thickening material is methyl diphenylene diisocyanate type urethane, and the content of described thickening material is 0.3-2 % by weight.
In a preferred embodiment of ornamental protective cover of the present invention, the caustic solubility acrylic acid polymer that described thickening material is hydrophobically modified, and the content of described thickening material is 0.1-1 % by weight.
Another aspect of the present invention provides a kind of ornamental supercoat, and it will obtain according to ornamental protective cover coating provided by the invention.
In a preferred embodiment of ornamental supercoat of the present invention, the visible reflectance of described ornamental supercoat is more than or equal to 20%.
Another aspect of the present invention provides a kind of method for the preparation of above-mentioned ornamental protective cover, said method comprising the steps of:
Described polyether type aqueous urethane and described aqueous solvent are mixed to obtain the first mixture;
Described pearlescence is mixed to obtain the second mixture with described the first mixture; With
Described thickening material is mixed to obtain described ornamental protective cover with described the second mixture.
In a preferred embodiment of the method for the ornamental protective cover of preparation of the present invention; polyether type aqueous urethane, aqueous solvent are mixed to obtain the first mixture with additive, described additive is selected from one or more in following group: rheology modifier, dispersion agent, wetting agent and defoamer.
Another aspect of the present invention provides a kind of method for the preparation of above-mentioned ornamental supercoat, said method comprising the steps of: coating is according to according to ornamental protective cover provided by the invention.
The ornamental supercoat of being prepared by the ornamental protective cover providing according to the present invention not only has excellent decorate properties or flash effect, and has good rippability.This ornamental supercoat not only can protect base material to avoid scratching, acid rain, and the extraneous damage such as UV, its removable property can also be simplified the difficulty of secondary construction.In addition, the glittering outward appearance of this ornamental supercoat can also provide for client the space of wide personalized designs, is with a wide range of applications.
Embodiment
Should be appreciated that and do not departing from the scope of the present invention or spirit in the situation that, those skilled in the art can imagine other various embodiments and can modify to it according to the instruction of this specification sheets.Therefore, following embodiment does not have restrictive, sense.
Except as otherwise noted, otherwise all numerals of representation feature size, quantity and the physical property used in this specification sheets and claim be all construed as in all cases and all modified by term " about ".Therefore, unless indicated to the contrary, otherwise the numerical parameter of listing in above-mentioned specification sheets and appended claims is all approximations, those skilled in the art can utilize instruction content disclosed herein to seek the desired characteristic obtaining, these approximations of appropriate change.The use of the numerical range representing with end points comprises all numerals within the scope of this and any scope within the scope of this, and for example, 1,2,3,4 and 5 comprise 1,1.1,1.3,1.5,2,2.75,3,3.80,4 and 5 etc.
ornamental protective cover
A kind of ornamental protective cover of the present invention; it comprises polyether type aqueous urethane, pearlescence, thickening material and aqueous solvent; the wherein gross weight based on described coating; the content of described polyether type aqueous urethane is 50-70 % by weight; the content of described pearlescence is 0.01-1 % by weight; the content of described thickening material is 0.1-2 % by weight, and described thickening material is selected from one or more in following group: the caustic solubility acrylic acid polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.
Polyether type aqueous urethane is filmogen main in the present invention, and to the thickness of film, intensity has important impact.The content of polyether type aqueous urethane is 50-70 % by weight, is preferably 55-65 % by weight, in the gross weight of described coating by 100 % by weight.The amount of polyether type aqueous urethane can not be lower than 50 % by weight, otherwise may make coating be difficult to film forming; The content of polyether type aqueous urethane can not be higher than 70 % by weight, otherwise may make coating be difficult to coating (for example, being difficult to spraying).The example of described polyether type aqueous urethane comprises polyether(poly)urethane emulsion, for example can be purchased from 8961 of Lubrizol Corp..
Pearlescence can make the prepared coating of coating provided by the invention have the decorative effect of flash of light.The decorative effect of coating provided by the invention can be characterized by visible reflectance, and visible reflectance is higher, and the luminous effect of coating is better, otherwise poorer.Visible reflectance can be measured by the spectrophotometer Lambda1050 purchased from PerkinElmer company.The content of pearlescence is 0.01-1 % by weight, is preferably 0.1-0.5 % by weight, in the gross weight of described coating by 100 % by weight.The content of pearlescence has important impact for the flash effect of coating provided by the invention.The content of pearlescence can not be lower than 0.01 % by weight, otherwise may make coating lose the effect of flash of light; The content of pearlescence can not be higher than 1 % by weight, otherwise may make pearlescence reunite in coating system.Pearlescence can be selected existing pearlescence in those prior aries, and the example comprises can be purchased from the Ronastar Golden Jewel of Merck company.
Thickening material is the neccessary composition in coating of the present invention.Astonishing and particularly importantly, the inventor finds, only has when thickening material comprises caustic solubility acrylic acid polymer, diphenylmethanediisocyanate (MDI) type polyurethane or their combination of hydrophobically modified and just can realize effect of the present invention.In addition, in the present invention, the content of thickening material also has important impact to coating provided by the invention.The content of thickening material is 0.1-2 % by weight, is preferably 0.3-1 % by weight, in the gross weight of described coating by 100 % by weight.When the content of thickening material is during lower than 0.1 % by weight, may make the pearlescence in coating produce precipitation.When the content of described thickening material is during higher than 2 % by weight, may make too thickness of coating, be unfavorable for coating (being unfavorable for especially spraying).In the time of caustic solubility acrylic acid polymer that described thickening material is hydrophobically modified, its content is preferably 0.1-1 % by weight, in the gross weight of described coating by 100 % by weight.In the time that described thickening material is diphenylmethanediisocyanate (MDI) type polyurethane, its content is preferably 0.3-2 % by weight, in the gross weight of described coating by 100 % by weight.The example of the caustic solubility acrylic acid polymer of described hydrophobically modified comprises can be purchased from the Acrysol TT-615 of Dow company.The example of described diphenylmethanediisocyanate (MDI) type polyurethane comprises can be purchased from the LM-275 of Shanghai Yong Yan company.
Coating provided by the invention contains aqueous solvent, and it is mainly used in dispersed each component.Aqueous solvent comprises the mixture of water or water and organic solvent, is preferably water.Organic solvent comprises the applicable organic solvents such as acetone.The content of aqueous solvent is 5-35 % by weight, is preferably 10-30 % by weight, in the gross weight of described coating by 100 % by weight.In addition, the content of organic solvent (for example acetone) in aqueous solvent can affect the speed of coating film forming.For example, the content of organic solvent (acetone) is higher, and the speed of coating film forming is faster, can not exceed 20 % by weight but organic solvent (acetone) content is the highest, otherwise may cause in spraying process rate of drying too fast and stop up spray gun.
For coating provided by the invention is more convenient for being coated with, and after coating, there is better outward appearance, coating provided by the invention can also further comprise additive as required, and described additive comprises one or more in following group: rheology modifier, defoamer, wetting agent and dispersion agent.The content of these compositions is 0-1 % by weight, in the gross weight of described coating by 100 % by weight.Described rheology modifier can be preferably purchased from Rheolate 288, CA-902 or the RM-12W of this special chemical company of hamming.Described defoamer is polysiloxane defoamer preferably, described polysiloxane defoamer can be preferably purchased from Byk-024 or the Byk-065 of BYK company.Described wetting agent is organosilicon wetting agent preferably, described organosilicon wetting agent can be preferably purchased from the Byk-3455 of BYK company or purchased from the DC67 of Dow Corning Corporation.Described dispersion agent is organosilicon dispersion agent preferably, described organosilicon dispersion agent can be preferably purchased from the Soja-Lecithin W250 of Lubrizol Corp. or purchased from BYK-161 or the BYK-163 of BYK company.
prepare the method for ornamental protective cover
A kind of method that the invention provides ornamental protective cover of preparing, comprises step:
Described polyether type aqueous urethane and described aqueous solvent are mixed to obtain the first mixture;
Described pearlescence is mixed to obtain the second mixture with described the first mixture; With
Described thickening material is mixed to obtain described ornamental protective cover with described the second mixture.
Described method, can also be obtaining in the step of the first mixture, polyether type aqueous urethane, aqueous solvent are mixed to obtain the first mixture with additive, described additive comprises one or more in following group: rheology modifier, defoamer, wetting agent and dispersion agent.
About the description of described " polyether type aqueous urethane, aqueous solvent, pearlescence, thickening material, and optional rheology modifier, dispersion agent, wetting agent and defoamer ", refer to this specification sheets "
ornamental protective cover" part.
ornamental supercoat
The invention provides a kind of ornamental supercoat, its coating obtains according to ornamental protective cover provided by the invention.
About the description of described " ornamental protective cover ", refer to this specification sheets "
ornamental guarantor protect coating" and "
prepare the method for ornamental protective cover" part.
prepare the method for ornamental supercoat
The invention provides a kind of method of preparing ornamental supercoat, comprise step: coating is according to ornamental protective cover provided by the invention.
Described method can also further comprise step after above-mentioned steps: dry.
Can adopt the coating process coating ornamental protective cover provided by the invention of various routines, preferably but be not limited to spraying, blade coating or brushing.
About the description of described " ornamental protective cover ", refer to this specification sheets "
ornamental guarantor protect coating" and "
prepare the method for ornamental protective cover" part.
embodiment
The embodiment below providing and comparative example contribute to understand the present invention, and these embodiment and comparative example should not be construed as limitation of the scope of the invention.Except as otherwise noted, all umbers and per-cent are all by weight.
The raw material adopting in embodiments of the invention and comparative example is as shown in table 1 below.
Table 1
| Trade(brand)name | Chemical name, character or specification | Production firm |
| 8961 | Polyether type aqueous urethane | Lu Borun |
| Byk-024 | Polysiloxane (defoamer) | BYK |
| Byk-3455 | Organosilicon (wetting agent) | BYK |
| Soja-Lecithin?W250 | Organosilicon (dispersion agent) | Lu Borun |
| Ronastar?Golden?Jewel | Pearlescence | Merck |
| Rheolate?288 | Urethane (rheology modifier) | Hai Mingsi special chemical |
| Acrysol?TT-615 | The caustic solubility acrylic acid polymer (thickening material) of hydrophobically modified | Dow |
| LM-275 | Methyl diphenylene diisocyanate type urethane (thickening material) | Grind forever in Shanghai |
| Walocel MT 20.000PV | Walocel MT 20.000PV (thickening material) | Hebei Xingtai company |
The rippability test of coating
The present invention tests the rippability of the coating that the embodiment of the present invention or comparative example provide by the following method:
By paint spay-coating on glass baseplate surface;
After treating that this coating is dry, on glass baseplate surface, form a coating;
Attempt with finger, this coating being peeled off from glass baseplate, if easily peeled off, illustrate that the separability of coating is better, if can not peel off, illustrate that the separability of coating is poor.
The flash effect test of coating
The present invention tests the flash effect of the coating that the embodiment of the present invention or comparative example provide by the following method:
By paint spay-coating on glass baseplate surface;
After treating that this coating is dry, on glass baseplate surface, form a coating;
The visible reflectance of measuring this coating with Lambda1050 spectrophotometer (purchased from PerkinElmer company of the U.S.), visible reflectance is higher, and the luminous effect of coating is better.
Embodiment 1
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 71.58g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 5.92g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
Under intense agitation at rotating speed at 1000-1500rpm, 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 1
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 75.79g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 1.71g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain for ornamental protective cover relatively with uniform suspension liquid form.
By described ornamental protective cover spray gun, due to very thickness of this coating, so be difficult to for example spraying of coating.
Embodiment 2
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 54.74g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 22.76g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 2
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 50.53g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 26.97g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain for ornamental protective cover relatively with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour at the ornamental supercoat of substrate surface formation one deck this ornamental supercoat skewness and have the phenomenon of shrinkage cavity.
Embodiment 3
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 13.94g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.9g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 3
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 13.74g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 1.1g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, and along with adding of thickening material Acrysol TT-615, pearlescence presents agglomeration, and produces a large amount of precipitations.
Embodiment 4
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 14.81g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.03g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 4
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 14.84g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
0.5g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain for protective cover relatively with uniform suspension liquid form.
Described protective cover is arrived to required substrate surface with spray gun spraying, at room temperature naturally dry after 1-2 hour and form layer of transparent and strippable supercoat at substrate surface, this supercoat does not have the decorative effect of flash of light.
Embodiment 5
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 14.72g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.12g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 5
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 14.76g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.08g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, and the pearlescence in mixture precipitates very soon, cannot obtain uniform pearlescence suspension liquid.
Embodiment 6
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 13.94g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.9g thickening material Acrysol TT-615 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Embodiment 7
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 14.34g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.5g thickening material LM-275 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Embodiment 8
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 13.04g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
1.8g thickening material LM-275 limit is stirred and just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
Comparative example 6
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 12.64g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
2.2g thickening material LM-275 limit is stirred and just slowly joined in mixture, obtain being difficult to flowing and the very high suspension liquid of viscosity, cannot be coated with for example spraying.
Comparative example 7
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 12.64g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g thickening material Natvosol, Natvosol and other composition react, produce spawn, cannot obtain uniform suspension liquid.
Embodiment 9
Take the aqueous solution polyaminoester emulsion 8961 (concentration is 95wt%) of counting 63.16g by polyether type aqueous urethane quality, under agitation condition at rotating speed at 300-600rpm, add 13.54g deionized water, 0.4g defoamer Byk-024,0.4g wetting agent Byk-3455,0.4g dispersion agent Soja-Lecithin W250 and 0.3g rheology modifier Rheolate 288, to obtain uniform mixture.
In mixture, add the acetone of 20g and stir until evenly.
, under the condition of the vigorous stirring of 1000-1500rpm 0.5g pearlescence Ronastar Golden Jewel is slowly added in mixture at rotating speed.
0.3g thickening material Acrysol TT-615 and the stirring of 1.0g thickening material LM-275 limit are just slowly joined in mixture, obtain ornamental protective cover provided by the invention with uniform suspension liquid form.
By described ornamental protective cover with spray gun spraying to required substrate surface, at room temperature naturally dry after 1-2 hour the glittering and strippable ornamental supercoat at substrate surface formation one deck.
The test-results of embodiments of the invention and comparative example is listed in table 2.
As can be seen from Table 2; ornamental protective cover provided by the invention comprises polyether type aqueous urethane, pearlescence, thickening material and aqueous solvent; the wherein gross weight based on described coating; the content of described polyether type aqueous urethane is 50-70 % by weight; the content of described pearlescence is 0.01-1 % by weight; the content of described thickening material is 0.1-2 % by weight, and described thickening material is selected from one or more in following group: the caustic solubility acrylic acid polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.The ornamental supercoat of preparing with ornamental protective cover provided by the invention, not only has good decorate properties or flash effect, and has good rippability.
In addition; as can be seen from Table 2; in ornamental protective cover provided by the invention; the content of polyether type aqueous urethane can not be lower than 50 % by weight; otherwise the ornamental supercoat making with this ornamental protective cover may be discontinuous because of shrinkage cavity phenomenon; the content of polyether type aqueous urethane can not be higher than 70 % by weight, otherwise may make the viscosity of ornamental protective cover too high and be difficult to for example spraying of coating.The content of pearlescence has important impact for the flash effect of coating of the present invention; wherein; the content of pearlescence can not be lower than 0.01 % by weight; otherwise coating may lose visible flash effect; the content of pearlescence can not be higher than 1 % by weight; otherwise pearlescence is easily reunited in coating, be difficult to coating and obtain ornamental supercoat.In addition; the content of thickening material can not be lower than 0.1 % by weight; otherwise the pearlescence in ornamental protective cover may precipitate, the content of thickening material can not be higher than 2 % by weight, otherwise may make too thickness and be difficult to for example spraying of coating of ornamental protective cover.
Although for illustrational object, above-mentioned embodiment comprises many details, those of ordinary skills should be understood that these details many modification, change, substitute and change in the scope of the invention of all protecting in claim.Therefore the present invention that the disclosure of, describing in embodiment is not protected claim applies any restriction.Proper range of the present invention should be limited by claims and suitable legal equivalents thereof.The reference of all references is all incorporated herein by reference in full.
Claims (11)
1. an ornamental protective cover; it comprises polyether type aqueous urethane, pearlescence, thickening material and aqueous solvent; the wherein gross weight based on described coating; the content of described polyether type aqueous urethane is 50-70 % by weight; the content of described pearlescence is 0.01-1 % by weight; the content of described thickening material is 0.1-2 % by weight, and described thickening material is selected from one or more in following group: the caustic solubility acrylic acid polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.
2. ornamental protective cover according to claim 1, described ornamental protective cover also comprises additive, and described additive is selected from one or more in following group: rheology modifier, dispersion agent, wetting agent and defoamer.
3. ornamental protective cover according to claim 1, the content of wherein said polyether type aqueous urethane is 55-65 % by weight.
4. ornamental protective cover according to claim 1, the content of wherein said pearlescence is 0.1-0.5 % by weight.
5. ornamental protective cover according to claim 1, wherein said thickening material is methyl diphenylene diisocyanate type urethane, and the content of described thickening material is 0.3-2 % by weight.
6. ornamental protective cover according to claim 1, the caustic solubility acrylic acid polymer that wherein said thickening material is hydrophobically modified, and the content of described thickening material is 0.1-1 % by weight.
7. an ornamental supercoat, it is to obtain according to the ornamental protective cover coating described in any one in claim 1 to 6.
8. ornamental supercoat according to claim 7, the visible reflectance of wherein said coating is more than or equal to 20%.
9. prepare according to a method for the ornamental protective cover described in any one in claim 1 to 6, said method comprising the steps of:
Described polyether type aqueous urethane and described aqueous solvent are mixed to obtain the first mixture;
Described pearlescence is mixed to obtain the second mixture with described the first mixture; With
Described thickening material is mixed to obtain described ornamental protective cover with described the second mixture.
10. method according to claim 9, wherein polyether type aqueous urethane, aqueous solvent are mixed to obtain the first mixture with additive, described additive is selected from one or more in following group: rheology modifier, dispersion agent, wetting agent and defoamer.
Prepare the method for ornamental supercoat, comprise the following steps for 11. 1 kinds: coating is according to the ornamental protective cover described in any one in claim 1 to 6.
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