CN1607223A - Technology for producing external-wall latex paint capable of reproducing international color 0491 (violet red) - Google Patents
Technology for producing external-wall latex paint capable of reproducing international color 0491 (violet red) Download PDFInfo
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- CN1607223A CN1607223A CN 200310100867 CN200310100867A CN1607223A CN 1607223 A CN1607223 A CN 1607223A CN 200310100867 CN200310100867 CN 200310100867 CN 200310100867 A CN200310100867 A CN 200310100867A CN 1607223 A CN1607223 A CN 1607223A
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Abstract
Said invention relates to a technology for producing color external wall latex paint which contains mixing latex base paint with color paste that can reappear international color (GB/T 18922-2002)0491 (violet red) by color mixer, in pigmented paint bed blending machine for 200-280s. Said latex base paint contains 35-60 % of emulsion, 0-25 % of pigment and 0-30 % of filling. The color external wall latex paint not only can reappear international color 0491 but also mostly guarantee the color accuracy.
Description
Technical field the present invention relates to a kind of production technology of colour emulsoid paint, particularly is used in the colour emulsoid paint production technology of color on the exterior wall, capable of reproducing international (" building color showing method ", GB/T 18922-2002).
The quick raising of the fast development of background technology construction industry and living standards of the people, it is more and more higher that people are required the decoration of buildings, and single white is not accepted by people gradually.In recent years, some light colour systems had begun to use in indoor finishing, and some dark slightly colors more and more are used on the external wall.As a kind of novel environmental type coating; emulsion paint, particularly colour emulsoid paint are with advantages such as its health, environmental protection, super quality and competitive price, color are abundant; and generally obtain people's favor; be widely used in the interior exterior wall surface decorative and the protection of buildings, also obtained bigger development in recent years.
Ripe gradually along with the decoration of exterior wall technology, some medium saturated ground colors also become the new lover of decoration of exterior wall color gradually, and purplish red have mystery, noble quality, grace, serious makings, is a kind of color for the extensive employing of modern life institute.At present, the kind that is used in the red-purple emulsion paint on the external wall on the market has a lot, but it is poor mostly all to exist the weathering resistance of color, and metope easily fades, the shortcoming of the inaccurate grade of the color of transferring, bring considerable trouble to the user, these problems are mainly reflected in:
(1) consistency of emulsion paint is poor, mainly shows to produce flocculation, and loose colour grows dim, and tinting strength descends, hue shift, and fineness increases, and gloss reduces, phenomenons such as paint stability variation.The reason that produces compatibility problem generally has two kinds, the one, the wetting dispersion system of emulsion paint is with quantity not sufficient or use unreasonable, cause the middle wetting dispersing agent on the whole toning paint system color stuffing surface after mill base adds to be redistributed, make the pigment that loses protection produce flocculation problems; The 2nd, because the dispersion stabilization of mill base is poor, self easily produces flocculation, returns problems such as thick.
(2) the emulsion paint performance of filming changes, mainly show when low and middle-grade coating mixed colours, because the PVC of coating designs higher mill base adding back pigment and shows especially in film coated surface, can make the water tolerance of coating, scrub resistance, alkali resistance, performances such as gloss reduce, and make original qualified whitewash become unacceptable product after toning.
(3) problem of hiding lack and opacifying power surplus, toning coating material finally can use with the form of colored paint, than the problem that is easier to occur: 1 opacifying power surplus: when the client used the strong white paint of opacifying power to adjust dark colour, very big of mill base add-on not only improved the toning cost greatly, make product lose the market competitiveness, and, make the water tolerance of coating, scrub resistance because the mill base add-on is too much, even viscosity, gloss etc. are all had a strong impact on.2 hiding lack problems: under lap if the content of titanium white is low excessively in the component of toning coating material, application 2 roads needing to appear, 3 roads, the situation in 4 roads makes the client be difficult to accept loaded down with trivial details application program and temporal delay.
(4) weathering resistance problem, weathering resistance problem are the most difficult assurance of coating material production manufacturer production exterior coating, have a headache most, be prone to most the index of problem, especially toning coating material not only can have influence on the stability of filming after the construction, durability degree, stability, and color aspect obvious variation can appear simultaneously.
(5) tinting strength of basic emulsion coating and mill base is low, realizes that the addition of design colours is excessive, causes cost too high.
In sum, also there are a lot of defectives in existing colored architectural latex coating on using, and below describes one by one by concrete data:
| The colored paint performance | Technical indicator |
| Color developing (loose colour, grow dim) is poor | Aberration Δ E＞2.0 |
| Paint film color and Standard Colors are inconsistent | Aberration Δ E＞2.0 |
| Glossiness difference | Velocity of variation＞10% |
| Viscosity differences | Velocity of variation＞10% |
| The artificial weathering ageing resistance is poor | ＜250 hours, foaming, dry linting, obviously variable color |
| Poor water resistance | 24 hours, foaming, dry linting, obviously variable color |
| Alkali resistance is poor | 24 hours, foaming, dry linting, obviously variable color |
| Opacifying power is superfluous and not enough | Saturated colour dark-colored paint contrast ratio＞0.05, tinted paint contrast ratio＜0.90 |
| The cost height | The mill base cost performance is low, and the toning prescription is poor |
These problems and disadvantage occur, one side is relevant, also relevant with execution of coating and substrate treatment on the other hand with the production technology level and the used material quality of current China emulsion for architecture coating.
Along with the development of building coating and perfect, simple white construction coating has become a kind of work in-process gradually, and during in particular for the external wall application, coloury emulsion paint coating more and more is subjected to liking of people.The distinct colors collocation not only can be satisfied the personalized painting effect requirement of people, realizes the requirement of environment to product performance, but also can realize that manufacturer increases the purpose of selling, improving profit.
Summary of the invention grows dim for fear of the metope of application exterior wall, fade, the generation of quality problems such as color distortion, satisfy the requirement of people's pursuing individuality color coating, the invention discloses accurately a kind of, the production technology of the colored exterior wall latex paint of advanced reproduction GB (GB/T 18922-2002) color 0491 (purplish red), comprise with a kind of basic emulsion coating with through the toning mill base of the color capable of reproducing international 0491 (purplish red) of colour mixer toning and in colored paint mixing equipment, mixing, the control of every technical indicator by to emulsion paint and toning mill base accurately and economically realizes the standard color coating.
Of the present invention accurately this, the production technology of the colored external wall of building emulsion paint of advanced color capable of reproducing international 0491 (purplish red), comprise that the toning mill base with a kind of basic emulsion coating and color capable of reproducing international 0491 (purplish red) carries out mixing in mixing equipment, wherein said basic emulsion coating comprises by weight percentage: 8～12% water, 2～4% solubility promoter, 0.5～1.2% dispersion agent, 0.15～0.25% wetting agent, 0～25% pigment, 0～30% filler, 1.5～2.4% film coalescence aid, 35～60% emulsion, 0.2 the PH conditioning agent of～1.0% thickening material and 0.1～0.2% is formed.
Emulsion paint plays decoration function with mill base in building coating, require that superior dispersion stability is arranged, photostabilization, weathering resistance and with the conformability of coating etc.The selected toning mill base of the present invention is made up of mill base PV23, PB15:3 and the PR101 of Shenzhen Haichuan Company.Wherein, PR101 is the good iron oxide red mill base of a kind of high performance exterior wall weathering resistance, and the pigment content of mill base is 65%, and PV23 is the oxazines purple, is the exterior wall purple mill base of using always, and bright-colored saturation ratio height, pigment content are 10%; PR254 is the good bright-coloured large red of exterior wall weathering resistance, have pure bright-coloured form and aspect, pigment content is 40% it to be used in the above-mentioned basic emulsion coating, and it is 0.7～0.75g that the per kilogram base paint adds PV23, PB15:3 is 0.43～0.46g, and PR101 is 1.56～1.61g.
As the necessary component in the basic emulsion coating, emulsion can be divided into by the different metopes that emulsion paint uses: interiro wall latex paint is with emulsion and exterior wall latex paint emulsion.Wherein, exterior wall latex paint is generally selected acrylate copolymer for use with emulsion, and its average molecular weight range is 15～200,000, median size is 0.1～0.2 μ m, and minimum film-forming temperature is 10～22 ℃, and second-order transition temperature is 25～35 ℃, anionic, pH value are 8.5～10.0.
According to the difference of employed metope, the selection of titanium white in basic emulsion coating also has difference.Usually, exterior coating is selected rutile-type for use, wherein, TiO2 content 〉=95%, rutile content 〉=98%, oil number＜20g/100g, the reducing power Reynolds is several now 1800, ASTM D476 II, III type and ISO 591 R2 types.
If the emulsion paint that is disposed is medium opacifying power (contrast ratio 0.75-0.85), then select the coating titanium white of the more dark usefulness of adjustment for use, addition is every liter of coating of 120～150g/ usually; If (the contrast ratio 0.05-0.25) of low opacifying power then selects the coating titanium white of adjusting saturated dark usefulness for use, its addition can be every liter of coating of 0g/; If (the contrast ratio 0.9-0.96) of high covering power then selects for use and transfer the light color titanium white, addition is every liter of coating of 240-300g/ usually.
According to colour emulsoid paint production technology of the present invention, the filler of selecting for use in the basic emulsion coating can be ground barium sulfate or mica powder, wherein the acid resistance of ground barium sulfate and guarantor's light tint retention are relatively good, the crystalline structure of mica powder is a sheet, can improve coating ultra-violet resistance energy, improve durability of coating.
Dispersion agent is the polycarboxylate salt dispersant with hydrophobically modified, and it has adsorption to inorganic and pigment dyestuff, and color developing is strong, and water resisting property is strong, molecular-weight average 100-5000.
Wetting agent is the combination of the nonionic wetting agent of 1～2 kind of different hydrophilic lipophilic balance value, the HLB that adjusts coating system is 12～13, can adjust the wettability and the color developing of coating to greatest extent, make mill base all reach good compatible effect with different hydrophilic or hydrophobic performance.
For eliminating the bubble that coating material production and coating process produce, when the preparation basic emulsion coating, add appropriate amount of defoamer therein, the defoamer that adopts can be the compound defoamer of aliphatic hydrocarbon, and the froth breaking active substance is polyethylene wax, metallic soap, hydrophobic inorganic silicon and organopolysiloxane, polyoxyethylene glycol and propylene glycol ethers etc.
Certainly, according to the purposes of emulsion paint, can be chosen in basic emulsion coating and re-add sanitas, to guarantee the use properties of emulsion paint.Sanitas can be selected triazines nitrogen-containing heterocycle compound, 4 for use, 4-dimethyl oxazolidine and trimethylammonium homologue thereof etc.
The PH conditioning agent can be selected 2-amino-2-methyl-1-propanol, dimethylaminoethanol, diethylethanolamine, ammoniacal liquor Yi Bingchunan etc. for use.
The optional water mould assembly of thickening material thickening material is as hydrophobically modified polypropylene soda acid swelling type, hydroxyethyl ether cellulose, polyurethane-type or the like.
Film coalescence aid is selected alcohol ester-12 for use.
After above-mentioned starting material were ready to, the prescription of pressing basic emulsion coating in water added solubility promoter, dispersion agent, defoamer, and stirring at low speed evenly back slowly adds color stuffing, high speed dispersion color stuffing then, by sand milling up to fineness less than 30 μ m, filter.After filtration is finished, under the stirring at low speed condition, in above-mentioned dispersion slurry, add wetting agent, defoamer, film coalescence aid, emulsion successively, adding thickening material adjustment viscosity then is 90-100KU, adding PH conditioning agent adjusting pH value is 8.5～9.0, and froth breaking is finished the preparation of basic emulsion coating at a slow speed.
Production technology according to colour emulsoid paint of the present invention, the toning mill base is made up of mill base PV23, PB15:3 and the PR101 of Shenzhen Haichuan Company, use the unit of 1/48Y to inject colour mixer respectively in proportion them, after toning, inject the special-purpose mixing machine of colored paint with above-mentioned latex basis, making it to mix at short notice, generally is 200～280s, preferably 200～250s.
Compared with prior art, the colored exterior wall latex paint production technology of this color 0491 capable of reproducing international of the present invention, can reproduce GB color 0491 in the short period of time, can also guarantee the accuracy of color to greatest extent, select the basic emulsion coating relevant for use with the toning mill base of required color, after mixing by colour mixer, colored paint mixing machine, the colour emulsoid paint of preparation is compared with the building coating standard colour card, but aberration between the two in allowed band, shown in the weathering resistance of color also obtained certain guarantee.
Embodiment is following to illustrate beneficial effect of the present invention by specific embodiment:
Embodiment: the colored external wall of building emulsion paint of preparation 100g color 0491 capable of reproducing international.
The component of basic emulsion coating and content:
Component title specification content
1. water 10.0
2. propylene glycol 2.0
3.Hydropalat?100??????????????????????????1.2
4.PE-100??????????????????????????????????0.2
5.Defoamer?334????????????????????????????0.15
6. rutile type R-706 22.0
7. ground barium sulfate 1000 orders 12.0
8. sericite in powder 800 orders 5.0
9.Filmer?C40??????????????????????????????1.8
10.FoamStar?A10???????????????????????????0.15
11. pure third 2,800 42.0
12.SN-636?????????????????????????????????0.2
13. ammoniacal liquor 28% 0.1
14.DSX-2000???????????????????????????????0.20
In water, add 1～8 component by the prescription of above-mentioned basic emulsion coating, high speed dispersion, sand milling up to fineness less than 25 μ m, then, under the stirring at low speed condition, add remaining component, water transfers to 100g, regulating the pH value is 8.5, and froth breaking is finished the preparation of basic emulsion coating at a slow speed.
Use the unit of 1/48Y to be injected into toning in the op3038 automatization colour mixer (Shenzhen Haichuan Company) respectively mill base PV23, PB15:3 and the PR101 of Shenzhen Haichuan Company, then, adding PV23 according to the per kilogram base paint is that 0.71g, PB15:3 are that 0.45g and PR101 are 1.59g, make it to be injected into together in the rotary-type mixing machine of op3020 (manual) (Shenzhen Haichuan Company), in 250s, mix.
Draw through analysis of experiments, the aberration Δ E of prepared colour emulsoid paint and GB color (GB/T 18922-2002) 0491 is 0.33, color paint coating have good stability no bad loose colour in the put procedure, the body of wall of color reproduces effective, and some main performances are as shown in the table:
The The performance test results of colour emulsoid paint
| The performance title | The result |
| ????PVC(％) | ????34 |
| Viscosity (KU) | ????90 |
| Thixotropy index TI | ????3.86 |
| Contrast ratio | ????0.956 |
| Glossiness (60) | ????9.4 |
| Abrasion resistance | 2000 times |
| Water tolerance | 96h is no abnormal |
| Alkali resistance | 48h is no abnormal |
| Weathering resistance (GB/T1865-1997) | 520hr is no abnormal |
| Aberration Δ E (phthalocyanine blue 7080,5%) | ????0.55 |
| Aberration Δ E (red iron oxide 3396,5%) | ????0.09 |
| Package stability (50 ℃, 30 days | ????92KU |
Claims (3)
1, the exterior wall latex paint production technology of a kind of color capable of reproducing international (GB/T 18922-2002) 0491 (purplish red), comprise a kind of basic emulsion coating and the mill base through 0491 (purplish red) capable of reproducing international of colour mixer toning are mixed 200～280s in colored paint mixing equipment, described basic emulsion coating comprises: 35～60% emulsion, 0～25% pigment, 0～30% filler; The toning mill base uses mill base PV23, PB15:3 and PR101 by Shenzhen Haichuan Company to form.
2, the production technology of colored exterior wall latex paint according to claim 1 is characterized in that, the consumption of toning mill base is 0.7～0.75g for the per kilogram basic emulsion coating adds PV23, and PB15:3 is 0.43～0.46g, and PR101 is 1.56～1.61g.
3, the production technology of colored exterior wall latex paint according to claim 1 is characterized in that, basic emulsion coating and toning mill base mix 200～250s in the special-purpose mixing equipment of colored paint.
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|---|---|---|---|
| CN 200310100867 CN1607223A (en) | 2003-10-14 | 2003-10-14 | Technology for producing external-wall latex paint capable of reproducing international color 0491 (violet red) |
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| CN 200310100867 CN1607223A (en) | 2003-10-14 | 2003-10-14 | Technology for producing external-wall latex paint capable of reproducing international color 0491 (violet red) |
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