CN101693801A - Rare earth modification exterior wall water-borne fluorocarbon coating and preparation method thereof - Google Patents
Rare earth modification exterior wall water-borne fluorocarbon coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a rare earth modification exterior wall water-borne fluorocarbon coating and a preparation method thereof. The rare earth modification exterior wall water-born fluorocarbon coating comprises the following components by weight parts: 35-60 parts of water-borne fluorocarbon emulsion, 12-18 parts of water, 0.2-0.5 part of dispersing agent, 0.05-0.25 part of wetting agent, 0.1-0.2 part of defoaming agent, 15-25 parts of pigment, 9-17 parts of filler, 0.3-0.5 part of rheology modifier, 1-2 parts of composite film forming aid, 0.5-1.5 parts of thickening agent, and 0.05-2 parts of ceric oxide. In the invention, the special performance of rare earth ceric oxide is utilized to carry out modification on the water-borne fluorocarbon coating, such defects of the existing water-borne fluorocarbon coating as cracking, foaming, blushing and the like are overcome, and the special functions of sterilization, mould resistance and the like are given to the water-borne fluorocarbon coating while improving the conventional combination properties of the coating. The invention can be widely applied to the coating of exterior walls of buildings, and the service lives of the coating layers of the exterior walls are improved.
Description
[technical field]
The present invention relates to skin coating, particularly a kind of rare earth modification exterior wall water-borne fluorocarbon coating and preparation method.
[background technology]
The exterior wall application is available coagulation soil decorating building and protection a kind of method commonly used; coating at present commonly used is generally synthetic resin emulsion and adds that auxiliary agent and pigment, filler are formulated; though it is with low cost; but coating efflorescence easy to change, easy; resistance to soiling is poor; weathering resistance is poor, and is easily aging, can't satisfy the needs of buildings application.
Water exterior wall paint be a kind of be the new coating of main film forming matter with the fluorocarbon-containing resin emulsion, owing to himself specific molecule structure, thereby have advantages such as higher weathering resistance, erosion resistance, heat-resisting winter hardiness, resistance to acids and bases, be subjected to the very big concern and the favor of building decoration industry, also become the hot subject of coating scientific worker research, the use on the external wall has obtained sizable breakthrough at home in recent years.But in application process, still there are the some shortcomings of aspects such as cracking, foaming, whiting in existing water exterior wall paint, and existing aqueous fluorocarbon coating do not have functions such as sterilization, mildew-resistant, influences the work-ing life of coating.For example, publication number is that the Chinese invention patent 02136833.3 of CN1200058C discloses a kind of water fluorine-carbon nanapaint, and The comprehensive performance is poor, is difficult to satisfy the needs of buildings application develop rapidly.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of good combination property, the rare earth modification exterior wall water-borne fluorocarbon coating of long service life.The present invention also will provide a kind of preparation method of rare earth modification exterior wall water-borne fluorocarbon coating.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, a kind of rare earth modified water exterior wall paint, and by weight, said composition is composed of the following components:
Water-base fluorocarbon emulsion 35-60
Water 12-18
Dispersion agent 0.2-0.5
Wetting agent 0.05-0.25
Defoamer 0.1-0.2
Pigment 15-25
Filler 9-17
Rheology modifier 0.3-0.5
Composite membrane-forming auxiliary agent 1-2
Thickening material 0.5-1.5
Cerium dioxide 0.05-2.
Described filler comprises dicalcium powder, talcum powder and wollastonite powder, and wherein, dicalcium powder is that 5-8 weight part, talcum powder are that 3-5 weight part, wollastonite powder are the 2-4 weight part, and described dicalcium powder, talcum powder, wollastonite are ultra-fine level Industrial products.
Described pigment is titanium dioxide, wollastonite powder, pearly-lustre bronze, in pearly-lustre silver powder, carbon black, organic red, middle bloom, the phthalein blue powder a kind or multiple.
The content of fluorine is greater than 20% in the described water-base fluorocarbon emulsion, and described water is deionized water.
The content of fluorine is more preferably greater than 23% in the described water-base fluorocarbon emulsion.
Described dispersion agent is one or more the mixture in poly carboxylic acid sodium, poly amic acid, polysiloxane, the sodium polyacrylate; Described wetting agent is the alkylphenol polyoxyethylene active ingredient greater than 99% nonionic surface active agent; Described defoamer is the siliceous and multiple mixture of the special oil base in ore deposit, the emulsification of aliphatic hydrocarbon, non-silicone organic ester hydrocarbon polymer, non-silicone amine hydrocarbon polymer, contain in the hydrophobic particles mineral oil mixture one or more mixture; Described rheology modifier is low molecular weight cellulose mixed esters or low molecular weight cellulose mixed esters; But described composite membrane-forming auxiliary agent is ethylene glycol, glycol ether alcohol ester 12; The mixture of one or more in described thickening material modified polyacrylic acid sodium, modified polypropene acid amide, ethoxyquin urethane polymer, the non-ionic polyurethane compound.
Described cerium dioxide is a kind of in micron a cerium dioxide, the nano ceric oxide or both mixtures.
The preparation method's of above-described rare earth modified water exterior wall paint technical scheme is,
1) by above-mentioned prescription, each component of weighing said composition;
2) preparation cerium dioxide aqueous dispersions: making concentration with portion water and cerium dioxide is 25% to 35% cerium dioxide aqueous dispersions, directly adopt outsourcing cerium dioxide aqueous dispersions as the component cerium dioxide, then omit preparation cerium dioxide aqueous dispersions step, when the weight of weighing component water, moisture in the deduction cerium dioxide aqueous dispersions is with the actual content of cerium dioxide in the cerium dioxide aqueous dispersions weight as cerium dioxide;
3) water-base fluorocarbon emulsion, remainder water, dispersion agent, filler, rheology modifier, composite membrane-forming auxiliary agent, thickening material and cerium dioxide aqueous dispersions are mixed under 1000-1600 rev/min speed dispersed with stirring 30-40 minute;
4) add defoamer and wetting agent, dispersed with stirring 20 minutes;
5) grind with sand mill, with 80-100 order net filtration.
Rare earth element (as bright-coloured, cerium, praseodymium, neodymium etc.) is because atomic structure is special, electronic level is abundant unusually, have many excellent physical characteristics, chemical property is very active in addition, can with other elementary composition a great variety, function is ever-changing, purposes is different type material, be widely used in a plurality of conventional industries field.Wherein cerium dioxide has abundant 4F electronic shell level structure, makes it to absorb ultraviolet energy by transition of electron, emits with the luminous energy of low-lying level and the mode of heat energy then, can have in preventing material aging.Particularly nano ceric oxide possesses ultraviolet radiation absorption and reflection double effect, prevents that the function of macromolecule material aging from will be stronger, and nano ceric oxide also has high surface simultaneously, can give material some special functions, as sterilization, mildew-resistant etc.
The present invention utilizes the property of RE CeO 2 that aqueous fluorocarbon coating is carried out modification, defectives such as cracking that existing water exterior wall paint exists, foaming, whiting have been overcome, and in the conventional over-all properties that improves coating, also give specific functions such as aqueous fluorocarbon coating sterilization, mildew-resistant.Therefore.The present invention can be widely used in the exterior wall application of buildings, improves the work-ing life of exterior wall application layer.
[embodiment]
In an embodiment of the present invention, water-base fluorocarbon emulsion is ZB-240, CHSF-30, JF-3X or JF-2X water-base fluorocarbon emulsion, and ZB-240 is Dalian company of the nation product that shakes, and HSF-30, JF-3X and JF-2X are east, Shanghai fluorine company product.
Dispersion agent is one or more the mixture in commercially available poly carboxylic acid sodium, poly amic acid, polysiloxane, the sodium polyacrylate.
Wetting agent is the alkylphenol polyoxyethylene active ingredient greater than 99% nonionic surface active agent, for the PE-100 type of U.S. Rhom and Hass or the X-405 type of LG-DOW company, preferably adopts the PE-100 type.
Defoamer is the siliceous and multiple mixture of the special oil base in commercially available ore deposit, the emulsification of aliphatic hydrocarbon, non-silicone organic ester hydrocarbon polymer, non-silicone amine hydrocarbon polymer, contain in the hydrophobic particles mineral oil mixture one or more mixture.The HY-202 type defoamer of special siliceous and multiple mixture defoamer of oil base in ore deposit such as U.S. Union Carbide Corp, the emulsification defoamer of aliphatic hydrocarbon can adopt the French Rhodoline of Rhodia
TM681F type defoamer, non-silicone amine hydrocarbon polymer defoamer such as the non-silicone defoamer of Taiwan moral modest company 082 type, containing hydrophobic particles mineral oil mixture defoamer can be with the French Rhodoline of Rhodia
TM642 type defoamers.
The pigment that coating is commonly used has: titanium dioxide, wollastonite powder, pearly-lustre bronze, pearly-lustre silver powder, carbon black, organic red, middle bloom, phthalein blue powder etc.In the present invention, titanium dioxide both can play white pigment, also can play filler.What usually use in the practical application is their mixture.Wherein titanium dioxide is in the highest flight, and remaining pigment component is 0 to 1/10 of titanium dioxide.Because other pigment quantities are little, and the performance of coating is not had great effect, following examples are only given an example as pigment with titanium dioxide, and titanium dioxide can be a kind of in rutile-type, the Detitanium-ore-type or their mixture, preferred rutile-type.
Rheology modifier is low molecular weight cellulose mixed esters or low molecular weight cellulose mixed esters, can adopt the BYK306 or the BYK323 type of German Bi Ke chemical company, is preferably the BYK306 type.
The composite membrane-forming auxiliary agent is ethylene glycol, glycol ether and alcohol ester 12.
Thickening material is one or more the mixture in commercially available modified polyacrylic acid sodium, modified polypropene acid amide, ethoxyquin urethane polymer, the non-ionic polyurethane compound.Be preferably the non-ionic polyurethane compounds, non-ionic polyurethane compound thickening material such as the Taiwan moral WT-105A of modest company type polyurethane associative thickener, modified polyacrylic acid sodium thickening material can be used the ZC-01 type thickening material of Beijing trade company of auspicious Cisco, and ethoxyquin urethane polymer thickening material can be striden dragon (AQUALON) the NATROSOL 250HBR of company type thickening material with U.S. Asia.
Cerium dioxide can be a kind of or its mixture in a micron cerium dioxide, the nano ceric oxide, is Huizhou riel chemistry Science and Technology Ltd. product, is preferably nano ceric oxide (Nano-CeO2).Can directly use the cerium dioxide aqueous dispersions, as the nano ceric oxide aqueous dispersions (FW-30 type) that uses Huizhou riel chemistry Science and Technology Ltd. to produce, the trouble that can remove preparation nano ceric oxide aqueous dispersions from.
Further specify the present invention below by embodiment.In following examples, components contents is weight part.
Embodiment 1:
ZB-240 water-base fluorocarbon emulsion 60
Solvent (deionized water) 12
Poly carboxylic acid sodium (dispersion agent) 0.5
PE-100 wetting agent 0.25
HY-202 defoamer 0.2
Rutile type Titanium Dioxide 15
Dicalcium powder 5
Talcum powder 3
Wollastonite 2
1# rheology modifier 0.5
Ethylene glycol (composite membrane-forming auxiliary agent) 1
WT-105A thickening material 0.5
Micron cerium dioxide 0.05.
Concrete preparation method is as follows:
By last each component of table weighing; Making concentration with part deionized water and micron cerium dioxide is 30% micron cerium dioxide aqueous dispersions; Water-base fluorocarbon emulsion, solvent (deionized water), poly carboxylic acid sodium, Rutile type Titanium Dioxide, dicalcium powder, talcum powder, wollastonite powder, rheology modifier, ethylene glycol, thickening material and micron cerium dioxide dispersion liquid are mixed, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
Embodiment 2:
ZB-240 water-base fluorocarbon emulsion 35
Solvent (deionized water) 18
Sodium polyacrylate (dispersion agent) 0.2
X-405 wetting agent 0.05
TM681F defoamer 0.1
Detitanium-ore-type titanium dioxide 25
Dicalcium powder 8
Talcum powder 5
Wollastonite 4,
2# rheology modifier 0.3
Glycol ether (composite membrane-forming auxiliary agent) 2
ZC-01 thickening material 1.5
Nano ceric oxide (Nano-CeO
2) 0.85
Concrete preparation method is as follows:
By last each component of table weighing; Making concentration with part deionized water and sodium rice cerium dioxide is 30% sodium rice cerium dioxide aqueous dispersions; Earlier water-base fluorocarbon emulsion, solvent (deionized water), sodium polyacrylate, Detitanium-ore-type titanium dioxide, dicalcium powder, talcum powder, wollastonite powder, rheology modifier, glycol ether, thickening material and nano ceric oxide dispersion liquid are mixed, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
Embodiment 3:
ZB-240 water-base fluorocarbon emulsion 40
Solvent (deionized water) 13
Poly amic acid (dispersion agent) 0.25
PE-100 wetting agent 0.06
082 defoamer 0.12
Rutile type Titanium Dioxide 22
Dicalcium powder 7.5
Talcum powder 5
Wollastonite 3.6
1# rheology modifier 0.32
Alcohol ester 12 (composite membrane-forming auxiliary agent) 1.8
250HBR thickening material 1.25
Nano ceric oxide aqueous dispersions (FW-30 type) 5
Concrete preparation method is as follows:
By last each component of table weighing; Water-base fluorocarbon emulsion, solvent (deionized water), poly amic acid, non-silicone organic ester hydrocarbon polymer, Rutile type Titanium Dioxide, dicalcium powder, talcum powder, wollastonite powder, rheology modifier, alcohol ester 12, thickening material and nano ceric oxide aqueous dispersions are mixed by above-mentioned part by weight, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
Embodiment 4:
ZB-240 water-base fluorocarbon emulsion 45
Solvent (deionized water) 11.5
Polysiloxane (dispersion agent) 0.25
PE-100 type (wetting agent) 0.08
082 defoamer 0.16
Rutile type Titanium Dioxide 20
Dicalcium powder 7
Talcum powder 4
Wollastonite 3
1# rheology modifier 0.36
Ethylene glycol (composite membrane-forming auxiliary agent) 1.6
250HBR thickening material 1
Nano ceric oxide aqueous dispersions (FW-30 type) 6.5
Concrete preparation method is as follows:
By last each component of table weighing; Water-base fluorocarbon emulsion, solvent (deionized water), polysiloxane, non-silicone amine hydrocarbon polymer, Rutile type Titanium Dioxide, dicalcium powder, talcum powder, wollastonite powder, 1# rheology modifier, ethylene glycol, ethoxyquin urethane polymer class thickening material and nano ceric oxide aqueous dispersions are mixed by above-mentioned part by weight, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
Embodiment 5:
ZB-240 water-base fluorocarbon emulsion 50
Solvent (deionized water) 12
Polysiloxane (dispersion agent) 0.32
PE-100 wetting agent 0.1
642 defoamers 0.18
Rutile type Titanium Dioxide 18
Dicalcium powder 6
Talcum powder 3.5
Wollastonite 2.65
1# rheology modifier 0.4
Ethylene glycol (composite membrane-forming auxiliary agent) 1
WT-105A thickening material 0.75
Nano ceric oxide aqueous dispersions (FW-30 type) 4.5
Concrete preparation method is as follows:
By last each component of table weighing; With water-base fluorocarbon emulsion, solvent (deionized water), polysiloxane, contain hydrophobic particles mineral oil mixture, Rutile type Titanium Dioxide, dicalcium powder, talcum powder, wollastonite powder, 1# rheology modifier, ethylene glycol, non-ionic polyurethane compounds thickening material and nano ceric oxide aqueous dispersions and mix by above-mentioned part by weight, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
Embodiment 6:
ZB-240 water-base fluorocarbon emulsion 55
Solvent (deionized water) 9
Polysiloxane (dispersion agent) 0.45
PE-100 wetting agent 0.2
642 defoamers 0.2
Rutile type Titanium Dioxide 16
Dicalcium powder 6.5
Talcum powder 3
Wollastonite 2.4
1# rheology modifier 0.45
Ethylene glycol (composite membrane-forming auxiliary agent) 1.2
WT-105A thickening material 0.6
Nano ceric oxide aqueous dispersions (FW-30 type) 6
Concrete preparation method is as follows:
By last each component of table weighing; With water-base fluorocarbon emulsion, solvent (deionized water), polysiloxane, contain hydrophobic particles mineral oil mixture, Rutile type Titanium Dioxide, dicalcium powder, talcum powder, wollastonite powder, 1# rheology modifier, ethylene glycol, non-ionic polyurethane compounds thickening material and nano ceric oxide aqueous dispersions and mix by above-mentioned part by weight, under 1000-1600 rev/min speed dispersed with stirring 30-40 minute, add defoamer and wetting agent then, dispersed with stirring 20 minutes, grind with sand mill at last, with 80-100 order net filtration, loading barrel packaging, to be detected.
The tabulation of table 1 embodiment rerum natura
| Component/performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Water-base fluorocarbon emulsion | ??60 | ??35 | ??40 | ??45 | ??50 | ??55 |
| Deionized water | ??12 | ??18 | ??16.5 | ??16 | ??15 | ??13 |
| Dispersion agent | ??0.5 | ??0.2 | ??0.25 | ??0.25 | ??0.32 | ??0.45 |
| Wetting agent | ??0.25 | ??0.05 | ??0.06 | ??0.08 | ??0.10 | ??0.20 |
| Component/performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Defoamer | ??0.2 | ??0.1 | ??0.12 | ??0.16 | ??0.18 | ??0.20 |
| Titanium dioxide | ??15 | ??25 | ??22 | ??20 | ??18 | ??16 |
| Dicalcium powder | ??5 | ??8 | ??7.5 | ??7 | ??6 | ??6.5 |
| Talcum powder | ??3 | ??5 | ??5 | ??4 | ??3.5 | ??3 |
| Wollastonite powder | ??2 | ??4 | ??3.6 | ??3 | ??2.65 | ??2.4 |
| Rheology modifier | ??0.5 | ??0.3 | ??0.32 | ??0.36 | ??0.4 | ??0.45 |
| The composite membrane-forming auxiliary agent | ??1 | ??2 | ??1.8 | ??1.6 | ??1.3 | ??1.2 |
| Thickening material | ??0.5 | ??1.5 | ??1.25 | ??1.0 | ??0.75 | ??0.6 |
| Cerium dioxide | ??0.05 | ??0.85 | ??1.6 | ??2 | ??1.3 | ??1.8 |
| Temper(ing)/h | ??3100 | ??3300 | ??3500 | ??4000 | ??3600 | ??4000 |
| Abrasion resistance/time | ??28000 | ??35000 | ??40000 | ??50000 | ??40000 | ??50000 |
| Water tolerance/h | ??580 | ??580 | ??580 | ??580 | ??580 | ??580 |
| Alkali resistance/h | ??580 | ??580 | ??580 | ??580 | ??580 | ??580 |
| Antibiotic rate | ??52.87 | ??88.36 | ??99.99 | ??99.99 | ??99.99 | ??99.99 |
| Anti-mold effect | 1 grade | 1 grade | 1 grade | 1 grade | 1 grade | 1 grade |
By embodiment 1-6 more as can be seen, the adding of rare earth material has obvious castering action to the performance of aqueous fluorocarbon coating, the over-all properties optimum of embodiment 4.Each performance detection canonical reference table 2.
Table 2 water exterior wall paint embodiment 4 performance test results of the present invention
| Project | Examination criteria | Technical indicator | Bibliographical information | Embodiment 4 |
| State in the container | ??GB/T??9755-2001 | Stir the no lump in back, be uniform state | Qualified | Qualified |
| Application property | ??GB/T??9755-2001 | It is accessible to brush two roads | Qualified | Qualified |
| Project | Examination criteria | Technical indicator | Bibliographical information | Embodiment 4 |
| Low-temperature stability | ??GB/T??9755-2001 | Never degenerate | ??-- | Qualified |
| Time of drying/h | ??GB/T??9755-2001 | ??≤2 | ??-- | ??≤1 |
| Appearance of film | ??GB/T??9755-2001 | Normally | Smooth | Smooth |
| Contrast ratio (white and light color) | ??GB/T??9755-2001 | ??≥0.93 | ??≥0.96 | ??≥0.96 |
| Water tolerance //h | ??GB/T??9755-2001 | 96h is no abnormal | 288h is no abnormal | 580h is no abnormal |
| Alkali resistance/h | ??GB/T??9755-2001 | 48h is no abnormal | 288h is no abnormal | 580h is no abnormal |
| Salt fog resistance/h | ??GB/T??1771-1991 | ??1000 | ??≥1000 | ??3500 |
| Abrasion resistance/time | ??GB/T??9755-2001 | ??≥2000 | ??≥12000 | ??≥50000 |
| Artificial ageing resistance/h | ??GB/T??9755-2001 | 600h is non-foaming, does not peel off flawless | The not efflorescence of 250h paint film | ??4000 |
| Temperature-change resistance (10 circulations) | ??GB/T??9755-2001 | No abnormal | -- | Qualified |
| Antibiotic rate (colon bacillus, 24h, %) | ??GB/T??15979-1995 | ??≥95 | -- | ??≥99.9 |
| Project | Examination criteria | Technical indicator | Bibliographical information | Embodiment 4 |
| Anti-mold effect (25 ℃ ± 1 ℃, 28 days relative humidity RH 〉=95%) | ??GB/T??1741-1979 | 1 grade | -- | 1 grade |
Embodiment 7-9 and embodiment 4 in coating except that main film forming substance is different, all the other components and unanimity, the preparation method is identical, its performance detection result contrast is as following table:
The different filmogens of table 3 are to the performance impact contrast table
| Project | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 4 |
| Main film forming substance | ??JF-2X | ??JF-3X | ??CHSF-30 | ??ZB-240 |
| Fluorine content (%) | ??20.5 | ??21.0 | ??23.0 | ??24.5 |
| Artificial ageing resistance (h) | ??2800 | ??3100 | ??3900 | ??4000 |
| Scrub resistance/time | ??30000 | ??35000 | ??45000 | ??50000 |
| Water tolerance/h | ??400 | ??420 | ??520 | ??580 |
| Alkali resistance [5%Ca (OH) 2] | ??400 | ??420 | ??520 | ??580 |
| Antibiotic rate % | ??99.99 | ??99.99 | ??99.99 | ??99.99 |
| Anti-mold effect | 1 grade | 1 grade | 1 grade | 1 grade |
As can be seen from the above table, along with the raising of fluorine content in the main film forming substance, the over-all properties of water-borne coatings also has very big lifting.
Claims (8)
1. a rare earth modified water exterior wall paint is characterized in that, by weight, said composition is composed of the following components:
Ingredients weight parts
Water-base fluorocarbon emulsion 35-60
Water 12-18
Dispersion agent 0.2-0.5
Wetting agent 0.05-0.25
Defoamer 0.1-0.2
Pigment 15-25
Filler 9-17
Rheology modifier 0.3-0.5
Composite membrane-forming auxiliary agent 1-2
Thickening material 0.5-1.5
Cerium dioxide 0.05-2.
2. rare earth modified water exterior wall paint according to claim 1, it is characterized in that, described filler comprises dicalcium powder, talcum powder and wollastonite powder, wherein, dicalcium powder is that 5-8 weight part, talcum powder are that 3-5 weight part, wollastonite powder are the 2-4 weight part, and described dicalcium powder, talcum powder, wollastonite are ultra-fine level Industrial products.
3. rare earth modified water exterior wall paint according to claim 1 is characterized in that, described pigment is titanium dioxide, wollastonite powder, pearly-lustre bronze, in pearly-lustre silver powder, carbon black, organic red, middle bloom, the phthalein blue powder a kind or multiple.
4. rare earth modified water exterior wall paint according to claim 1 is characterized in that, the content of fluorine is greater than 20% in the described water-base fluorocarbon emulsion, and described water is deionized water.
5. rare earth modified water exterior wall paint according to claim 3 is characterized in that the content of fluorine is greater than 23% in the described water-base fluorocarbon emulsion.
6. rare earth modified water exterior wall paint according to claim 1 is characterized in that, described dispersion agent is one or more the mixture in poly carboxylic acid sodium, poly amic acid, polysiloxane, the sodium polyacrylate; Described wetting agent is the alkylphenol polyoxyethylene active ingredient greater than 99% nonionic surface active agent; Described defoamer is the siliceous and multiple mixture of the special oil base in ore deposit, the emulsification of aliphatic hydrocarbon, non-silicone organic ester hydrocarbon polymer, non-silicone amine hydrocarbon polymer, contain in the hydrophobic particles mineral oil mixture one or more mixture; Described rheology modifier is low molecular weight cellulose mixed esters or low molecular weight cellulose mixed esters; But described composite membrane-forming auxiliary agent is ethylene glycol, glycol ether alcohol ester 12; The mixture of one or more in described thickening material modified polyacrylic acid sodium, modified polypropene acid amide, ethoxyquin urethane polymer, the non-ionic polyurethane compound.
7. rare earth modified water exterior wall paint according to claim 1 is characterized in that, described cerium dioxide is a kind of in micron a cerium dioxide, the nano ceric oxide or both mixtures.
8. the preparation method of the described rare earth modified water exterior wall paint of claim 1 is characterized in that,
1) by the described prescription of claim 1, each component of weighing said composition;
2) preparation cerium dioxide aqueous dispersions: making concentration with portion water and cerium dioxide is 25% to 35% cerium dioxide aqueous dispersions, directly adopt outsourcing cerium dioxide aqueous dispersions as the component cerium dioxide, then omit preparation cerium dioxide aqueous dispersions step, when the weight of weighing component water, moisture in the deduction cerium dioxide aqueous dispersions is with the actual content of cerium dioxide in the cerium dioxide aqueous dispersions weight as cerium dioxide;
3) water-base fluorocarbon emulsion, remainder water, dispersion agent, filler, rheology modifier, composite membrane-forming auxiliary agent, thickening material and cerium dioxide aqueous dispersions are mixed under 1000-1600 rev/min speed dispersed with stirring 30-40 minute;
4) add defoamer and wetting agent, dispersed with stirring 20 minutes;
5) grind with sand mill, with 80-100 order net filtration.
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Application publication date: 20100414 |