CN101629049A - Anti-paste and anti-graffiti fluorocarbon coating and use method thereof - Google Patents
Anti-paste and anti-graffiti fluorocarbon coating and use method thereof Download PDFInfo
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Abstract
The invention relates to an anti-paste and anti-graffiti fluorocarbon coating which is prepared by mixing a component A and a component B in a proportion of OH/NCO=1:(1.0-1.1), wherein the component A comprises the following components in percentage by weight: 50-65 percent of FEVE fluororesin, 1-3 percent of modified polydimethylsiloxane resin containing hydroxide radicals, 8-15 percent of butyl acetate, 15-25 percent of propylene glycol methyl ether acetate, 0.2-0.4 percent of defoaming agent and 0.1-0.3 percent of flatting agent; and the component B is prepared by mixing 80 parts of IPDI isocyanate curing agent or GDI multifunctional isocyanate curing agent by weight and 20 parts of anhydrous butyl acetate by weight. The coating has high film crosslinking density and hardness, low surface tension, extremely strong permeability resistance and excellent anti-paste and anti-graffiti performance, and intractable oil pen graffiti can also be easily and completely wiped out. The coating also has excellent wear-resistant, scouring resistant and weather resistant properties and is suitable for long-term outdoor use. The coating can be painted and can also be sprayed after being diluted by adding 10-20 percent of PMA or polyurethane coating diluent.
Description
Technical field
The present invention relates to a kind of coating, especially relate to a kind of composition and using method thereof of anti-paste, anti-doodling paint.
Background technology
Various buildingss and structures especially public place are perplexed by various small advertisements and scribble for a long time, have influenced city look and feel.For addressing this problem, people have taked several different methods, have invented the surface that multiple coating is coated in these buildingss or structures, wish to reach the adhesion and doodling prevention purpose, have obtained certain effect.These coating are the not viscosity energy that utilizes organosilicon or mineral oil mostly, with organo-siloxane or mineral oil with other materials is compound makes, as with the water-based fluoro-silicone emulsion being the aqueous anti-doodling paint, vinylformic acid silica alkane anti-doodling paint, mineral oil anti-doodling paint, silicone-modified acroleic acid polyurethane anti-doodling paint etc. of film forming matter and the various anti-doodling paints that add the siloxanes auxiliary agent.These anti-doodling paints have two classes, one, anti-graffiti effective constituent only is that physical property is mixed in paint film with other compositions, depositing in use for some time the free effective constituent that is distributed in coating surface and being wiped and cause anti-graffiti function to reduce even disappear and be distributed in the shortcoming that coating surface adheres to dust because of effective constituent is free.They are two years old, chemically crosslinked such as silicone-modified acroleic acid polyurethane anti-doodling paint have taken place in anti-graffiti effective constituent and other compositions in paint film, can do not wiped and cause anti-graffiti function to reduce even disappear because of the free surface that not be distributed in, they have adhesion and doodling prevention function preferably, general oil pen also had antigraffiti effect preferably, but promptly use alcohol also to be difficult to clean fully to some obstinate oil pen's scribbles, always stay some obvious marks.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of paint film cross-linking density height, hardness height, surface tension is low, permeability resistance is extremely strong anti-paste and anti-graffiti fluorocarbon coating, even obstinate oil pen's scribble also can be cleaned easily fully, this coating also has excellent wear-resisting, washability, weather resistance, is fit to outdoor life-time service.Simultaneously, the present invention also provides the using method of this coating.
For addressing the above problem, the invention provides a kind of anti-paste and anti-graffiti fluorocarbon coating, by A component and B component according to OH/NCO=1: proportioning (1.0-1.1) mixes, and wherein, the A component is made by the component of following weight proportion:
The A component:
FEVE fluoro-resin 50-65
Modification hydroxyl polydimethylsiloxaneresins resins 1-3
Butylacetate 8-15
Propylene glycol methyl ether acetate 15-25
Defoamer 0.2-0.4
Flow agent 0.1-0.3;
The B component is mixed by the component of following weight proportion:
IPDI isocyanate curing agent or HDI polyfunctional isocyanate solidifying agent 80
Anhydrous acetic acid butyl ester 20.
The preparation method of described A component is:
Step 1: FEVE fluoro-resin and butylacetate added to join be low to moderate middling speed in the lacquer container and stir more than 3 minutes, and under agitation add defoamer, flow agent, add and continue middling speed and stir more than 3 minutes;
Step 2: under violent stirring, continue violent stirring more than 15 minutes with joining the lacquer container in the adding of modification hydroxyl polydimethylsiloxaneresins resins, adding;
Step 3: be low to moderate adding propylene glycol methyl ether acetate solvent under the middling speed stirring, adding and continue to be low to moderate the middling speed stirring more than 3 minutes, filtering and packaging and promptly get described A component.
The preparation method of described B component is: IPDI isocyanate curing agent or HDI polyfunctional isocyanate solidifying agent and anhydrous butyl ester are added to join be low to moderate middling speed in the lacquer container and stir more than 10 minutes, mix the after-filtration packing and promptly get described B component.
Described FEVE fluoro-resin is middle vast and boundless JF-2X or Asahi Glass LF-200 or Da Jin GK-570.
Described defoamer is a modification silicone alkane defoamer.
Described flow agent is polyether-modified polydimethylsiloxane.
Described IPDI (isophorone diisocyanate) isocyanate curing agent is Bayer T1890 or Z4770.
Described HDI polyfunctional isocyanate solidifying agent is the MHG-80B of Asahi Chemical Industry.
Described defoamer is a moral modest 5300; Described flow agent is TEGO450.
The present invention also provides the using method of this anti-paste and anti-graffiti fluorocarbon coating: at first A component and B component are mixed according to the proportioning that is indicated and stir, leave standstill more than 5 minutes and get final product brush application; The PMA or the thinner for polyurethane coating that perhaps add 10-20% in addition carry out spraying application after the dilution.
Anti-paste and anti-graffiti fluorocarbon coating of the present invention, be with FEVE fluoro-resin and the combination of modification hydroxyl polydimethylsiloxaneresins resins, polyfunctional isocyanate isocyanate-based or that be made of HDI (hexamethylene diisocyanate) is that solidifying agent is made two-component fluorine carbon anti-doodling paint with IPDI (isophorone diisocyanate).Described FEVE fluoro-resin contains hydroxyl, fast with IPDI isocyanic ester (or HDI polyfunctional isocyanate) solidifying agent speed of response, paint film cross-linking density height, paint film compactness height, surface tension is low, and permeability resistance is extremely strong, the hardness height, wear-resisting, abrasion resistance good, anti-various chemical mediator excellent performances help to improve the adhesion and doodling prevention performance.The modification hydroxyl polydimethylsiloxaneresins resins that is adopted not only has extraordinary not viscosity and anti-graffiti property, because of itself contains hydroxy functional group, participate in curing cross-linking reaction, on chemical structure, become as a whole with paint film, thereby can keep the adhesion and doodling prevention function for a long time, the effective constituent of avoiding more existing anti-doodling paints only is that physical property is mixed and caused and use after for some time anti-graffiti function to reduce even disappear and be distributed in coating surface because of effective constituent is free glue grey shortcoming.And, because fluoro-resin and silicone resin compatibility are bad, FEVE fluoro-resin density is than silicone resin density height, add the characteristic of siloxanes itself with regard to oriented surface transport, produce from stratification effect in the construction after fixing process, to surface transport, form crosslinked siloxanes paint film layer in the silicone resin solidification process, make coating have very excellent anti-paste and antigraffiti properties on the surface.The solidifying agent that is adopted is IPDI isocyanic ester (or HDI polyfunctional isocyanate), have than HDI tripolymer rate of drying and very high hardness faster, and the isocyanate-based solidifying agent of IPDI has the hardness of rate of drying and Geng Gao faster than HDI polyfunctional isocyanate solidifying agent, helps improving permeability resistance thereby helps improving antigraffiti properties.Adhesion and doodling prevention coating of the present invention has excellent antiseized antigraffiti properties, can prevent to adopt obstinate oil pen's scribble.The obstinate oil pen that the present invention has bought existing a plurality of brands compares test, test shows, coating of the present invention has an extraordinary effect to obstinate oil pen is anti-graffiti, for example to Artline board 90 type oil pens' scribble, slight trace is only stayed in the cotton wiping, alcohol is very easily cleaned, and existing adhesion and doodling prevention coating is as being the acroleic acid polyurethane of main effective constituent with silicone resin, polyester-polyurethane, with the water-based fluoro-silicone emulsion is the aqueous anti-doodling paint of film forming matter, vinylformic acid silica alkane anti-doodling paint, though mineral oil anti-doodling paint etc. has anti-graffiti preferably function to common oil pen and free ink pen, but then promptly use alcohol also to be difficult to clean fully to obstinate oil pen, always stay some obvious marks.Simultaneously coating of the present invention is main film forming matter because of adopting the FEVE fluoro-resin, all has excellent wear-resisting, the washability that manys, weather resistance than other various types of anti-doodling paints, can keep excellent antiseized anti-graffiti function for a long time, is fit to outdoor life-time service.
Embodiment
Each component of the present invention all adopts currently available products.Wherein, described FEVE fluoro-resin is meant CTFE (trifluorochloroethylene) or PTFE (tetrafluoroethylene), vinyl monomer, carboxylic monomer and carboxylic monomer quarternary copolymerized resin, its fluorine content 〉=20%, fast with IPDI isocyanic ester (or HDI polyfunctional isocyanate) solidifying agent speed of response, paint film compactness height, surface tension is low, the hardness height, wear-resisting, abrasion resistance good, anti-various chemical mediator excellent performances help to improve the adhesion and doodling prevention performance; Described modification hydroxyl polydimethylsiloxaneresins resins itself contains hydroxy functional group, participates in curing cross-linking reaction, and the present invention adopts the TEGO5000 of Di Gao company; Described flow agent is the smooth and wetting polyether-modified polydimethylsiloxane of improvement ground of powerful enhancement coating surface, can not only promote surperficial levelling, to improving the adhesion and doodling prevention performance certain help is arranged also, and the present invention adopts the TEGO450 of Di Gao company; Described defoamer is a modification silicone alkane defoamer, can suppress and remove the bubble that produces in system lacquer and the construction process well, and the present invention adopts 5300 of the modest company of moral; Solvent of the present invention is considered to have adopted PMA (propylene glycol methyl ether acetate) and butylacetate from environmental angle, also can adopt the strong ester class of other solvency powers, ketone and multifunctional solvent, does not influence the antiseized antigraffiti properties of paint film.Solidifying agent adopts IPDI (isophorone diisocyanate) isocyanic ester, as Bayer T1890, Z4770 etc. or HDI polyfunctional isocyanate such as the MHG-80B of Asahi Chemical Industry, have the advantages that rate of drying is fast, hardness is high, chemical mediator-resitant property is good, help improving the anti-chemical mediator perviousness of paint film thereby improving its antigraffiti properties.
The manufacturer of the component of embodiment 1-3, weight and each component and model be as shown in Table 1:
Table one
Three kinds of fluoro-resin among the above embodiment 1-3 recipe ingredient A can equivalent exchange, and each set of dispense ratio remains unchanged among the component A; But the proportioning of B component and component A should be calculated by the fluoro-resin after the displacement, and makes OH/NCO=1: (1.0-1.1), can reach the antiseized antigraffiti effect of ideal; Two kinds of solidifying agent also can exchange in the same B component, but consumption will calculate according to used fluoro-resin kind and consumption among the component A after the displacement, and make OH/NCO=1: (1.0-1.1), various situations can reach the antiseized antigraffiti effect of ideal.
Embodiment 1
At first prepare the antiseized anti-doodling paint component of the present invention A:
Get each component by weight shown in the embodiment in the table one 1, the preparation method is according to following steps:
Step 1: JF-2X fluoro-resin 65.0kg, butyl acetate solvent 15.0kg added to join be low to moderate middling speed in the lacquer container and stirred 3 minutes, and under agitation add the modest 5300 defoamer 0.4kg of moral, TEGO450 flow agent 0.3kg, add and continue the middling speed stirring more than 3 minutes.
Step 2: under violent stirring, the TEGO5000 modification hydroxyl polydimethylsiloxaneresins resins 3.0kg of Di Gao company added in the mixture that step 1 obtains, add and continue violent stirring more than 15 minutes.
Step 3:, add and continue to be low to moderate the middling speed stirring more than 3 minutes being low to moderate adding PMA solvent 25.0kg under the middling speed stirring.200 mesh filter screens filter and package and promptly get described adhesion and doodling prevention coating A component after the assay was approved.
Secondly, the antiseized anti-doodling paint B component of preparation the present invention:
The MHG-80B of Asahi Chemical Industry solidifying agent 8.12kg and anhydrous acetic acid butyl ester 2.03kg added to join be low to moderate middling speed in the lacquer container and stir more than 10 minutes, 200 orders filter and package and promptly get described adhesion and doodling prevention coating B component after the assay was approved.
With the present invention's antiseized anti-doodling paint A component and B component by weight 108.7: 10.15 (OH: NCO=1: 1.02) mix quiet and put more than 5 minutes, brush then, brush seasoning and promptly got antiseized anti-graffiti fluorocarbon coating paint film, surface drying time is no more than 1 hour under the normal temperature, does solid work 24 hours.Performance test results is shown in 1 corresponding data of embodiment in the table 2.Constructional method then needs to add 10% PMA or thinner for polyurethane coating in addition as adopting spraying, and performance test results is identical.
Embodiment 2
According to each composition weight branch among the embodiment 2, repeat embodiment 1 described method, make antiseized anti-doodling paint component A and B component.According to weight proportion A component: (OH: NCO=1: 1.06) mix and leave standstill more than 5 minutes and brush, surface drying time is no more than 1 hour to B component=90.5: 15.0, does solid work 24 hours.Performance test results is shown in 2 corresponding datas of embodiment in the table 2.Constructional method then needs to add 15% PMA or thinner for polyurethane coating in addition as adopting spraying, and performance test results is identical.
Embodiment 3
According to each composition weight branch among the embodiment 3, repeat embodiment 1 described method, make antiseized anti-doodling paint component A and B component.According to weight proportion A component: (OH: NCO=1: 1.1) mix and leave standstill more than 5 minutes and brush, surface drying time is no more than 1 hour to B component=74.3: 17.0, does solid work 24 hours.Performance test results is shown in 3 corresponding datas of embodiment in the table 2.Constructional method then needs to add 20% PMA or thinner for polyurethane coating in addition as adopting spraying, and performance test results is identical.
Table 2
Claims (10)
1. anti-paste and anti-graffiti fluorocarbon coating, by A component and B component according to OH/NCO=1: proportioning (1.0-1.1) mixes, and wherein, the A component is made by the component of following weight proportion:
The A component:
FEVE fluoro-resin 50-65
Modification hydroxyl polydimethylsiloxaneresins resins 1-3
Butylacetate 8-15
Propylene glycol methyl ether acetate 15-25
Defoamer 0.2-0.4
Flow agent 0.1-0.3;
The B component is mixed by the component of following weight proportion:
IPDI isocyanate curing agent or HDI polyfunctional isocyanate solidifying agent 80
Anhydrous acetic acid butyl ester 20.
2. anti-paste and anti-graffiti fluorocarbon coating according to claim 1 is characterized in that, the preparation method of described A component is:
Step 1: FEVE fluoro-resin and butylacetate added to join be low to moderate middling speed in the lacquer container and stir more than 3 minutes, and under agitation add defoamer, flow agent, add and continue middling speed and stir more than 3 minutes;
Step 2: under violent stirring, continue violent stirring more than 15 minutes with joining the lacquer container in the adding of modification hydroxyl polydimethylsiloxaneresins resins, adding;
Step 3: be low to moderate adding propylene glycol methyl ether acetate solvent under the middling speed stirring, adding and continue to be low to moderate the middling speed stirring more than 3 minutes, filtering and packaging and promptly get described A component.
3. anti-paste and anti-graffiti fluorocarbon coating according to claim 1, it is characterized in that, the preparation method of described B component is: IPDI isocyanate curing agent or HDI polyfunctional isocyanate solidifying agent and anhydrous butyl ester are added to join be low to moderate middling speed in the lacquer container and stir more than 10 minutes, mix the after-filtration packing and promptly get described B component.
4. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described FEVE fluoro-resin is middle vast and boundless JF-2X or Asahi Glass LF-200 or Da Jin GK-570.
5. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described defoamer is a modification silicone alkane defoamer.
6. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described flow agent is polyether-modified polydimethylsiloxane.
7. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described IPDI (isophorone diisocyanate) isocyanate curing agent is Bayer T1890 or Z4770.
8. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described HDI polyfunctional isocyanate solidifying agent is the MHG-80B of Asahi Chemical Industry.
9. according to each described anti-paste and anti-graffiti fluorocarbon coating of claim 1~3, it is characterized in that described defoamer is a moral modest 5300; Described flow agent is TEG0450.
10. the using method of the described anti-paste and anti-graffiti fluorocarbon coating of claim 1: at first A component and B component are mixed according to the proportioning that is indicated and stir, leave standstill more than 5 minutes and get final product brush application; The PMA or the thinner for polyurethane coating that perhaps add 10-20% in addition carry out spraying application after the dilution.
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