CN102127345B - Water-based coating composition, preparation method thereof and method for taking water-based coating composition as strippable coating protective film - Google Patents

Water-based coating composition, preparation method thereof and method for taking water-based coating composition as strippable coating protective film Download PDF

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CN102127345B
CN102127345B CN 201010592499 CN201010592499A CN102127345B CN 102127345 B CN102127345 B CN 102127345B CN 201010592499 CN201010592499 CN 201010592499 CN 201010592499 A CN201010592499 A CN 201010592499A CN 102127345 B CN102127345 B CN 102127345B
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emulsion
water
based paint
paint compositions
sticking power
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CN102127345A (en
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许月红
阙会斌
鲁初明
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WUHAN JIHENG NEW MATERIAL TECHNOLOGY CO LTD
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WUHAN JIHENG NEW MATERIAL TECHNOLOGY CO LTD
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Abstract

The present invention relates to a method for forming a strippable coating protective film using a water-based coating composition. The method comprises the following steps: the water-based coating composition is applied to a body surface to form a strippable coating protective film. The water-based coating composition takes synthesized resin emulsion as a substrate and takes water as a dispersion medium. When the water-based coating composition prepared by adopting the method is applied to the surface of an object, the strippable coating protective film can be formed. The formed strippable coating protective film has the advantages of excellent combination property, environmental friendliness, fast drying at normal temperature, wide strippable temperature range and high stripping property.

Description

Water-based paint compositions, its making method and as the method for strip(pable)coating protective membrane
Technical field
The present invention relates to water-based paint compositions, especially relate to a kind of water-based paint compositions, its making method and as the method for strip(pable)coating protective membrane.
Background technology
The appearance paint films such as automobile, naval vessel, weaponry, all kinds of mechanical means, there is the possibility that is subject to damage in various degree owing to various reason on the surfaces such as plastic component, all kinds of section bar, electric appliance casing, glass fiber reinforced plastics product in manufacturing, transportation, storage process, cause the loss of value of the product.As automobile sell to from dispatching from the factory to the user during this period of time in, normally be stored in open-air parking lot.During this period of time, Automotive Paint Film Properties will be subject to the erosion of the various factorss such as ultraviolet ray, acid rain, industrial dust, building dust and birds frass.Consequent consequence is that the car surface quality that the user buys is lower than the coating quality when dispatching from the factory, and causes the loss of value of the product.Therefore, it is very necessary automobile being carried out provisional protection.
Domestic each automobile factory one does not protect at present, and the 2nd, adopt the wax protection, the 3rd, adopt the pad pasting protection, the 4th, extremely indivedual factories adopt strippable paint, but performance is undesirable.
Harm without protective membrane: the car surface quality is lower than the coating quality when dispatching from the factory, and causes the loss of value of the product.
Adopt wax protection characteristics to be: the cost of filming is low, but membrane removal (comprise except membrane solvent such as kerosene etc., except film water treatment equipment, membrane removal artificial) cost is high, environmental pollution is large.
Adopt the harm of pad pasting protection: cost is high, the pad pasting unfairness, is difficult for tearing after the time is long, sometimes even car surface paint destroys.
At present domestic have indivedual automobile factorys to use Stripable paint, but general shortcoming is more.These coating have following obvious shortcoming: 1, smell is large, not environmental protection; 2, dry slow, even will dry, not energy-conservation; 3, peelable temperature range is narrow, requires 10-30 ℃; It is 4, long-term that (six months) are outdoor is difficult to divest peelable poor performance after being exposed to the sun.For example, 200880018768.4 invent a kind of water-based paint compositions for form peelable temporary coating at base material, described water-based paint compositions comprises at least a water-based film-forming polymkeric substance, it is characterized in that described composition additionally comprises the amino resin based polymer solid particulate.This invention contains the amino resin based polymer solid particulate, with the amino resin based polymer solid particulate as the additive in the water-based paint compositions to improve the strippability of stripping lacquer, this solid particulate requires in the drying and forming-film process with high boiling point or harmful organic solvent such as dimethyl dipropylene glycol, Pyranton, methyl iso-butyl ketone (MIBK), 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate (Texanol), ethyl acetate, methyl iso-butyl ketone (MIBK), toluene, dimethylbenzene etc. help film forming, the coalescent formation uniform films of the polymer beads that the existence of these organic solvents can be conducive to disperse.But the adding of these organic solvents will inevitably increase the smell of water-based paint compositions, causes simultaneously drying at room temperature slow, requires drying 2 hours, or lower dry 30 minutes at 60 ℃.
Summary of the invention
The objective of the invention is according to the existing market status, a kind of strip(pable)coating protective membrane of excellent combination property is provided.
A kind of method of utilizing water-based paint compositions to form the strip(pable)coating protective membrane that the present invention proposes may further comprise the steps:
Described water-based paint compositions is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions is comprised of according to following weight fraction following material:
(A) synthetic resin emulsion: 60-90 part,
(B) sticking power conditioning agent: 1.0-3.0 part,
(C) color stuffing: 5-10 part,
(D) defoamer: 0.5-1.5 part,
(E) dispersion agent: 0.3-1.2 part,
(F) thickening material: 1.0-3.0 part,
(G) sanitas: 0.02-0.1 part
(H) ethanol: 7-15 part,
(I) deionized water: 7-15 part.
Above-mentioned synthetic resin emulsion employing hard emulsion and soft emulsion are composite, do not need to add film coalescence aid and get final product film forming, thereby can reduce the coating smell; Can reduce consumption for the high boiling organic solvent that helps film forming to hard emulsion and soft emulsion blend, reduce smell, simultaneously favourable raising rate of drying.
Above-mentioned synthetic resin emulsion is selected one or more in vinyl acetate emulsion, benzene emulsion, modification soft propene acid esters elastic emulsion, elastic polyurethane emulsion, alkyd emulsion and silicon the third elastic caoutchouc emulsion.
Sticking power conditioning agent in the above-mentioned water-based paint compositions is selected one or more in aqueous release agent, tensio-active agent, synthetic motor oil, silicone emulsion, the modified polyorganosiloxane.Regulate film adhesive by adding sticking power conditioning agent, the polarity of adjusting the latex molecule and snappiness, satisfy the requirement of different surfaces sticking power.The polymkeric substance that polarity is little, snappiness is good is favourable to the strip(pable)coating that forms.
Color stuffing in the above-mentioned water-based paint compositions is selected one or more in titanium dioxide, phthalocyanine blue, phthalocyanine green, carbon black, talcum powder, wollastonite powder, the calcium carbonate crystal whisker.
Defoamer in the above-mentioned water-based paint compositions is selected one or both in mineral oils, the organopolysiloxane class.
Dispersion agent in the above-mentioned water-based paint compositions is selected is in polyacrylic acid sodium salt, the non-ionic surfactant one or both.
What the thickening material in the above-mentioned water-based paint compositions was selected is the nonionic polyurethane compounds.
The making processes of above-mentioned water-based paint compositions comprises following steps:
(1) parts by weight of accurate weighing each component that above-mentioned water-based paint compositions comprises;
(2) sanitas is under agitation added in the mixture of ethanol, deionized water for subsequent use for (a);
(3) preparation synthetic resin emulsion (A) can select in vinyl acetate emulsion, benzene emulsion, modification soft propene acid esters elastic emulsion, elastic polyurethane emulsion, alkyd emulsion and silicon the third elastic caoutchouc emulsion one or more compound, and compound tense is in the situation that a kind of emulsion stirred add other kinds emulsion and be mixed into (b);
(4) under agitation add in (b) with dispersion agent, color stuffing, sticking power conditioning agent, thickening material, defoamer with (a) successively, stir and be a kind of water-based paint compositions in 15 minutes.
Simultaneously the present invention is by using ethanol Substitute For Partial water, adding the aciculiform fleut, such as wollastonite powder, wollastonite powder is needle-like crystal, this for moisture in the drying process fast by passage is provided, be conducive to accelerate rate of drying, select the methods such as add-on of fast dry emulsion and the difficult volatilization of control composition to improve rate of drying.Method with simple economy has improved Air drying speed, but does not need baking seasoning film forming.
Water-based paint compositions of the present invention is applied to the strip(pable)coating protective membrane that body surface forms, and (25~35 ℃) 30 minutes can be dry under the room temperature.Have good peelable performance, 0~50 ℃ of craft can divest.Simultaneously, this strip(pable)coating protective membrane excellent combination property, smell is low, asepsis environment-protecting; Air drying is fast, save energy; Peelable temperature range is wide, and paint film 0-50 ℃ peelable, and peelable performance is good, does not affect peelable performance at outdoor life-time service; Do not produce water when peeling off and pollute, the resources such as water, solvent (such as kerosene) are saved in the enabling environment protection.
Above-mentioned water-based paint compositions forms the method for strip(pable)coating protective membrane at base material, the method is applied to substrate surface with water-based paint compositions, and makes it form the strip(pable)coating protective membrane at substrate surface.
Above-mentioned base material can be to be plastics, paint, glass, porcelain, stainless steel, aluminium alloy.
Why strippability is good for the strip(pable)coating protective membrane that coating provided by the invention forms; because adopted the sticking power conditioning agent of non-volatility water-insoluble resistance to high temperature oxidation such as silicone emulsion, synthesizer wet goods; avoided when outdoor application, affecting because of wind and rain sunlight and thermal ageing etc. gradually loss or the inefficacy of sticking power conditioning agent, overcome the shortcoming that supercoat can increase along with the prolongation sticking power of time when outdoor application.The latex particle that contains in the coating is homodisperse in water; be applied to and form after the wet film on the base material; coating is being become by wet film in the dry protection film process; moisture content in the coating and ethanol is volatilization constantly; this is so that latex particle is close to each other; water and ethanol further volatilize; so that latex particle is in contact with one another; the latex particle that is in contact with one another has just formed continuous coating protection cuticula; and the effective ingredients such as sticking power conditioning agent can be retained in the protective membrane; and rich gathering between base material and protective membrane, forming weak key coat, this weak key coat has good stability in various physical environments, guaranteed the permanent strippability of strip(pable)coating protective membrane.As long as the force of cohesion of protective membrane is higher than bonding force between base material and the protective membrane, the strippability of protective membrane just can be guaranteed.
If do not add synthetic motor oil or silicone emulsion in the coating, sticking power when running into high temperature, damp and hot and ultraviolet ray ageing, can occur and increase phenomenon.This may be because also more stable under the key coat normal temperature of simple aqueous release agent a little less than forming between base material and the protective membrane; and under the abnormal conditions such as high temperature, can make releasing agent molecular migration diffusion and lose; releasing agent content reduces in the weak key coat; make bonding force increase between base material and the protective membrane; even surpass the force of cohesion of protective membrane, affect the strippability of protective membrane.Synthetic motor oil or silicone emulsion are then very stable; non-volatile under the high temperature, water is insoluble, also can not mix with protective membrane produces diffusion mobility and loses, or process is very slow; make that bonding force remains stable between base material and the protective membrane, thereby guaranteed permanent strippability.
The present invention has adopted the emulsion blending modification technology, utilizes different costs, different performance emulsion blending to reach the reduction cost, reaches simultaneously the Essential Performance Requirements of supercoat, such as suitable elasticity, to cold and hot adaptability, weathering resistance etc.Owing to adopting hard emulsion and soft emulsion composite, do not have simultaneously as adopting the amino resin based polymer solid particulate to improve the strippability of stripping lacquer in the patent 200880018768.4 yet, therefore do not need to add high boiling organic film coalescence aid and get final product fine film forming, thereby can reduce the coating smell, and favourable raising rate of drying.(Tg) is lower for the second-order transition temperature of soft emulsion, usually below room temperature, even mix (mixing such as 50 to 50) with the hard emulsion of a great deal of, does not add the film forming auxiliary agent, also can be in the drying at room temperature film forming.During drying and forming-film, the soft emulsion polymkeric substance can be out of shape and is filled between the hard emulsion polymeric interstices, forms external phase, and the hard emulsion polymkeric substance then can be given the good intensity of filming, and resistance to blocking is provided.When hard emulsion was enough thin, dried polymkeric substance can be evenly distributed in the middle of the soft emulsion polymeric matrix, when the specific refractory power of two kinds of polymkeric substance is similar, just can obtain transparent polymer coating film, and has corresponding coating strength.
At room temperature (25~35 ℃) investigate discovery time of drying of coating of the present invention: replace part water to make the solvent of coating with ethanol, can shorten time of drying, and (degree of drying is not as the criterion not adhere to finger with finger extrusion layer and coating to shorten to 30 minutes from 40 minutes time of drying.), the adding of this explanation ethanol can improve rate of drying.Find according to the sticking power of ISO 2409:2007 (E) paint and varnish-cross cut test method evaluation coating of the present invention: the coating that is added with ucon oil is tested its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 〉=4 grades under the condition of 82 ℃ * 168h, its sticking power of test is 〉=4 grades under the condition of the aging 250h of QUV, and its sticking power of test is 〉=4 grades under the condition of 60 ℃ of water vapour 168h.And the coating that does not add synthetic lubricating oil test its sticking power 〉=4 grade under 24 hours the condition of (25~35 ℃) seasoning at room temperature, its sticking power of test is 3 grades under the condition of 82 ℃ * 168h, its sticking power of test is 3 grades under the condition of the aging 250h of QUV, and its sticking power of test is 3 grades under the condition of 60 ℃ of water vapour 168h.The protective membrane of the coating formation of ucon oil is added in this explanation can control the sticking power increase effectively, is easy to peel off.
Embodiment
Embodiment 1 (comparative example)
A kind of water-based paint compositions for form the strip(pable)coating protective membrane at base material, it is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions comprises the material of parts by weight as shown in the table:
Sequence number Title Parts by weight
1 The HBC benzene emulsion 35.0
2 HBA modified acroleic acid elastic emulsion 35.0
3 The AS-HW301 aqueous release agent 1.2
4 The DP-18 dispersion agent 0.6
5 082 water-based defoamer 0.9
6 Wollastonite powder 8
7 The WT-105A water-based thickener 2.3
8 Hua Ke-981 water-borne preservative 0.03
9 Industrial alcohol 10.0
10 Distilled water 7
The preparation method of above-mentioned water-based paint compositions comprises the steps:
(a) according to the described parts by weight weighing of upper table each component;
(b) with after load weighted industrial alcohol and the distilled water mixing, add load weighted sanitas, stir while adding, obtain mixture (1);
(c) load weighted benzene emulsion is under agitation added in the load weighted modified acroleic acid elastic emulsion, obtain mixture (2);
(d) successively load weighted dispersion agent, wollastonite powder, aqueous release agent, thickening material, defoamer and mixture (1) are under agitation added in (2), stir and namely obtained described water-based paint compositions in 15 minutes.
Above-mentioned water-based paint compositions is applied on amino varnish, colored paint, glass, the stainless steel substrate, and coating can form the strip(pable)coating protective membrane at base material.
Water-based paint compositions of the present invention can adopt the method construction of brushing, roller coat, spraying, and on amino varnish, colored paint, glass, stainless steel substrate, (25~35 ℃) 30 minutes can be dry under the room temperature.Have good peelable performance at indoor storage, 0~50 ℃ of craft can divest.But for a long time in outdoor (more than six months) strippability variation.
Above-mentioned water-based paint compositions is sprayed on the test plate (panel) that scribbles amino varnish, carries out rate of drying and adhesion test, the sticking power evaluation method adopts ISO 2409:2007 (E) paint and varnish-cross cut test in this experiment.The result shows that at room temperature be 30 minutes (25~35 ℃) time of drying; Test its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 3 grades under the condition of 82 ℃ * 168h, its sticking power of test is 3 grades under the condition of the aging 250h of QUV, and its sticking power of test is 3 grades under the condition of 60 ℃ of water vapour 168h.
Embodiment 2
A kind of water-based paint compositions for form the strip(pable)coating protective membrane at base material, it is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions comprises the material of parts by weight as shown in the table:
Sequence number Title Weight part
1 The HBC benzene emulsion 35.0
2 HBA modified acroleic acid elastic emulsion 35.0
3 The AS-HW301 aqueous release agent 1.2
4 The SM5W-40 ucon oil 1.5
5 The DP-18 dispersion agent 0.6
6 082 water-based defoamer 0.9
7 Wollastonite powder 8
8 The WT-105A water-based thickener 2.3
9 Hua Ke-981 water-borne preservative 0.03
10 Industrial alcohol 10.0
11 Distilled water 7
The preparation method of above-mentioned water-based paint compositions comprises the steps:
(a) according to the described parts by weight weighing of upper table each component;
(b) with after load weighted industrial alcohol and the distilled water mixing, add load weighted sanitas, stir while adding, obtain mixture (1);
(c) load weighted benzene emulsion is under agitation added in the load weighted modified acroleic acid elastic emulsion, obtain mixture (2);
(d) successively load weighted dispersion agent, wollastonite powder, aqueous release agent, ucon oil, thickening material, defoamer and mixture (1) are under agitation added in (2), stir and namely obtained described water-based paint compositions in 15 minutes.
Above-mentioned water-based paint compositions is applied on amino varnish, colored paint, glass, the stainless steel substrate, and coating can form the strip(pable)coating protective membrane at base material.
Water-based paint compositions of the present invention can adopt the method construction of brushing, roller coat, spraying, and on amino varnish, colored paint, glass, stainless steel substrate, (25~35 ℃) 30 minutes can be dry under the room temperature.Not only have good peelable performance at indoor storage, still fine at outdoor (more than six months) strippability for a long time.0~50 ℃ of craft can divest.
The SM5W-40 ucon oil can substitute with 0.5 part of silicone emulsion in this prescription.
Above-mentioned water-based paint compositions is sprayed on the test plate (panel) that scribbles amino varnish, carries out rate of drying and adhesion test, the sticking power evaluation method adopts ISO 2409:2007 (E) paint and varnish-cross cut test in this experiment.The result shows that at room temperature be 30 minutes (25~35 ℃) time of drying; Test its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 〉=4 grades under the condition of 82 ℃ * 168h, its sticking power of test is 〉=4 grades under the condition of the aging 250h of QUV, and its sticking power of test is 〉=4 grades under the condition of 60 ℃ of water vapour 168h.
Embodiment 3 (comparative example)
A kind of water-based paint compositions for form the strip(pable)coating protective membrane at base material, it is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions comprises the material of parts by weight as shown in the table:
Sequence number Title Weight part
1 The HBC benzene emulsion 35.0
2 HBA modified acroleic acid elastic emulsion 35.0
3 The AS-HW301 aqueous release agent 1.2
4 The DP-18 dispersion agent 0.6
5 082 water-based defoamer 0.9
6 Wollastonite powder 8
7 The WT-105A water-based thickener 2.3
8 Hua Ke-981 water-borne preservative 0.03
9 Distilled water 17
The preparation method of above-mentioned water-based paint compositions comprises the steps:
(a) according to the described parts by weight weighing of upper table each component;
(b) in load weighted distilled water, add load weighted sanitas, stir while adding, obtain mixture (1);
(c) load weighted benzene emulsion is under agitation added in the load weighted modified acroleic acid elastic emulsion, obtain mixture (2);
(d) successively load weighted dispersion agent, wollastonite powder, aqueous release agent, thickening material, defoamer and mixture (1) are under agitation added in (2), stir and namely obtained described water-based paint compositions in 15 minutes.
Above-mentioned water-based paint compositions is applied on amino varnish, colored paint, glass, the stainless steel substrate, and coating can form the strip(pable)coating protective membrane at base material.
Water-based paint compositions of the present invention can adopt the method construction of brushing, roller coat, spraying, and on amino varnish, colored paint, glass, stainless steel substrate, (25~35 ℃) 40 minutes can be dry under the room temperature.Have good peelable performance at indoor storage, 0~50 ℃ of craft can divest.But for a long time in outdoor (more than six months) strippability variation.
Water-based paint compositions in the above-mentioned example is sprayed on the test plate (panel) that scribbles amino varnish, carries out rate of drying and adhesion test, the sticking power evaluation method adopts ISO 2409:2007 (E) paint and varnish-cross cut test in this experiment.The result shows that at room temperature be 40 minutes (25~35 ℃) time of drying; Test its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 3 grades under the condition of 82 ℃ * 168h, its sticking power of test is 3 grades under the condition of the aging 250h of QUV, and its sticking power of test is 3 grades under the condition of 60 ℃ of water vapour 168h.
Embodiment 4
A kind of water-based paint compositions for form the strip(pable)coating protective membrane at base material, it is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions comprises the material of parts by weight as shown in the table:
Sequence number Title Weight part
1 The HBC benzene emulsion 35.0
2 W830/360 elastic polyurethane emulsion 35.0
3 The AS-HW301 aqueous release agent 1.2
4 The SM5W-40 ucon oil 1.5
5 The DP-18 dispersion agent 0.6
6 082 water-based defoamer 0.9
7 Wollastonite powder 8
8 The WT-105A water-based thickener 2.3
9 Hua Ke-981 water-borne preservative 0.03
10 Industrial alcohol 10.0
11 Distilled water 7
The preparation method of above-mentioned water-based paint compositions comprises the steps:
(a) according to the described parts by weight weighing of upper table each component;
(b) with after load weighted industrial alcohol and the distilled water mixing, add load weighted sanitas, stir while adding, obtain mixture (1);
(c) load weighted benzene emulsion is under agitation added in the load weighted elastic polyurethane emulsion, obtain mixture (2);
(d) successively load weighted dispersion agent, wollastonite powder, aqueous release agent, ucon oil, thickening material, defoamer and mixture (1) are under agitation added in (2), stir and namely obtained described water-based paint compositions in 15 minutes.
Above-mentioned water-based paint compositions is applied on amino varnish, colored paint, glass, the stainless steel substrate, and coating can form the strip(pable)coating protective membrane at base material.
This water-based paint compositions can adopt the constructional method of brushing, roller coat, spraying, and on amino varnish, colored paint, glass, stainless steel substrate, (25~35 ℃) 30 minutes can be dry under the room temperature.Not only have good peelable performance at indoor storage, still fine at outdoor (more than six months) strippability for a long time.0~50 ℃ of craft can divest.
The SM5W-40 ucon oil can substitute with 0.5 part of silicone emulsion in this prescription.
Water-based paint compositions in the above-mentioned example is sprayed on the test plate (panel) that scribbles amino varnish, carries out rate of drying and adhesion test, the sticking power evaluation method adopts ISO 2409:2007 (E) paint and varnish-cross cut test in this experiment.The result shows that at room temperature be 30 minutes (25~35 ℃) time of drying; Test its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 〉=4 grades under the condition of 82 ℃ * 168h, its sticking power of test is 〉=4 grades under the condition of the aging 250h of QUV, and its sticking power of test is 〉=4 grades under the condition of 60 ℃ of water vapour 168h.
Embodiment 5
A kind of water-based paint compositions for form the strip(pable)coating protective membrane at base material, it is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions comprises the material of parts by weight as shown in the table:
Sequence number Title Weight part
1 The TE vinyl acetate emulsion 49.0
2 W830/360 elastic polyurethane emulsion 21.0
3 The AS-HW301 aqueous release agent 1.2
4 The SM5W-40 ucon oil 1.5
5 The DP-18 dispersion agent 0.6
6 082 water-based defoamer 0.9
7 Wollastonite powder 8
Sequence number Title Weight part
8 The WT-105A water-based thickener 2.3
9 Hua Ke-981 water-borne preservative 0.03
10 Industrial alcohol 10.0
11 Distilled water 7
The preparation method of above-mentioned water-based paint compositions comprises the steps:
(a) according to the described parts by weight weighing of upper table each component;
(b) with after load weighted industrial alcohol and the distilled water mixing, add load weighted sanitas, stir while adding, obtain mixture (1);
(c) load weighted vinyl acetate emulsion is under agitation added in the load weighted elastic polyurethane emulsion, obtain mixture (2);
(d) successively load weighted dispersion agent, wollastonite powder, aqueous release agent, ucon oil, thickening material, defoamer and mixture (1) are under agitation added in (2), stir and namely obtained described water-based paint compositions in 15 minutes.
Above-mentioned water-based paint compositions is applied on amino varnish, colored paint, glass, the stainless steel substrate, and coating can form the strip(pable)coating protective membrane at base material.
This water-based paint compositions can adopt the constructional method of brushing, roller coat, spraying, and on amino varnish, colored paint, glass, stainless steel substrate, (25~35 ℃) 30 minutes can be dry under the normal temperature.Not only have good peelable performance at indoor storage, still fine at outdoor (more than six months) strippability for a long time.0~50 ℃ of craft can divest.
The SM5W-40 ucon oil can substitute with 0.5 part of silicone emulsion in this prescription.
Water-based paint compositions in the above-mentioned example is sprayed on the test plate (panel) that scribbles amino varnish, carries out rate of drying and adhesion test, the sticking power evaluation method adopts ISO 2409:2007 (E) paint and varnish-cross cut test in this experiment.The result shows that at room temperature be 30 minutes (25~35 ℃) time of drying; Test its sticking power 〉=4 grade under 24 hours condition of seasoning, its sticking power of test is 〉=4 grades under the condition of 82 ℃ * 168h, its sticking power of test is 〉=4 grades under the condition of the aging 250h of QUV, and its sticking power of test is 〉=4 grades under the condition of 60 ℃ of water vapour 168h.

Claims (1)

1. a method of utilizing water-based paint compositions to form the strip(pable)coating protective membrane is characterized in that, may further comprise the steps:
Described water-based paint compositions is take synthetic resin emulsion as base-material, and take water as dispersion medium, this water-based paint compositions is comprised of according to following weight fraction following material:
(A) synthetic resin emulsion: 60-90 part,
(B) sticking power conditioning agent: 1.0-3.0 part,
(C) color stuffing: 5-10 part,
(D) defoamer: 0.5-1.5 part,
(E) dispersion agent: 0.3-1.2 part,
(F) thickening material: 1.0-3.0 part,
(G) sanitas: 0.02-0.1 part,
(H) ethanol: 7-15 part,
(I) deionized water: 7-15 part;
Described synthetic resin emulsion adopts hard emulsion and soft emulsion composite, and synthetic resin emulsion selects in vinyl acetate emulsion, benzene emulsion, modification soft propene acid esters elastic emulsion, elastic polyurethane emulsion, alkyd emulsion and silicon the third elastic caoutchouc emulsion one or more compound;
Described sticking power conditioning agent selects in aqueous release agent, tensio-active agent, synthetic motor oil, silicone emulsion, the modified polyorganosiloxane one or more compound;
Described color stuffing selects in titanium dioxide, phthalocyanine blue, phthalocyanine green, carbon black, talcum powder, wollastonite powder, the calcium carbonate crystal whisker one or more compound;
Described defoamer selects in mineral oils, the organopolysiloxane class one or both compound;
Described dispersion agent is selected is a kind of in polyacrylic acid sodium salt, the non-ionic surfactant or two kinds;
What described thickening material was selected is the nonionic polyurethane compounds;
The parts by weight of the accurate weighing each component that described water-based paint compositions comprises of i;
Ii under agitation adds sanitas (G) in the mixture of ethanol (H), deionized water (I) for subsequent use for (1);
Iii prepares synthetic resin emulsion (A): select in vinyl acetate emulsion, benzene emulsion, modification soft propene acid esters elastic emulsion, elastic polyurethane emulsion, alkyd emulsion and silicon the third elastic caoutchouc emulsion one or more compound, compound tense is in the situation that a kind of emulsion stirred add the second emulsion and be mixed into (2);
Iv under agitation adds dispersion agent, color stuffing, sticking power conditioning agent, thickening material, defoamer and (1) in (2) successively; stirred 15 minutes; obtain water-based paint compositions, water-based paint compositions is applied to body surface forms the strip(pable)coating protective membrane.
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