CN103468049B - Adsorbable, decompose difunctional coating except formaldehyde and preparation method thereof - Google Patents
Adsorbable, decompose difunctional coating except formaldehyde and preparation method thereof Download PDFInfo
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- CN103468049B CN103468049B CN201310459167.XA CN201310459167A CN103468049B CN 103468049 B CN103468049 B CN 103468049B CN 201310459167 A CN201310459167 A CN 201310459167A CN 103468049 B CN103468049 B CN 103468049B
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Abstract
The invention discloses a kind of adsorbable, decompose the difunctional coating except formaldehyde, solve existing coating and all to objectionable impuritiess such as release formaldehydes in air, and can not possess the problem of function of removing formaldehyde.This coating of the present invention is made up of the component of following weight percents: coarse whiting 25 ~ 30%, emulsion 10 ~ 15%, calcined kaolin 4 ~ 10%, water-washed kaoline 4 ~ 10%, titanium dioxide 4 ~ 10%, modified meerschaum/nano-TiO
2matrix material 4 ~ 10%, dispersion agent 0.1 ~ 0.6%, wetting agent 0.1 ~ 0.6%, defoamer 0.1 ~ 0.6%, multifunctional assistant 0.1 ~ 0.6%, mould inhibitor 0.1 ~ 0.6%, film coalescence aid 0.1 ~ 0.6%, frostproofer 0.1 ~ 0.6%, sterilant 0.1 ~ 0.6%, thickening material 0.1 ~ 0.6%, water 25 ~ 30%.Present invention also offers the preparation method of above-mentioned coating, coating of the present invention has extremely strong except formaldehyde performance, safe and reliable.
Description
Technical field
The present invention be specifically related to a kind of adsorbable, decompose difunctional coating except formaldehyde and preparation method thereof.
Background technology
Formaldehyde is a kind of volatile organic compound, colourless, have special odor, slightly overweights air, soluble in water.Formaldehyde has material impact to HUMAN HEALTH, has strong impulse effect to eyes, respiratory tract, human body mucous membrane and skin; The symptoms such as acute poisoning can cause shedding tears, runny nose, cough, cause various respiratory tract disease; Chronic inhalation of low concentration can cause unrelenting headache, unable, insomnia etc.; Chronic skin contact can cause dermatitis, produces detrimentally affect, cause lung and liver immunologic dysfunction to the respiratory system of human body, Digestive tract and central nervous system.Formaldehyde is so serious to harm, produces and the building material product of effective degradation of formaldehyde can cause the attention of building trade.
At present, house fitting pollution problem is day by day subject to people and payes attention to, and for most of family, the main material of indoor pollution is exactly formaldehyde.The various finishing material of the formaldehyde source causing house ornamentation to pollute, specifically, the formaldehyde in finishing pollution is mainly derived from the coating of sizing agent used in wood-based plate and furniture and interior wall and furniture surface spraying.And existing coating in use all to objectionable impuritiess such as release formaldehydes in air, can cause serious room air pollution, also do not possess function of removing formaldehyde simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of adsorbable, decompose the difunctional coating except formaldehyde, solve existing coating and all to objectionable impuritiess such as release formaldehydes in air, and can not possess the problem of function of removing formaldehyde.
The present invention is achieved through the following technical solutions:
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents:
Coarse whiting 25 ~ 30%
Emulsion 10 ~ 15%
Calcined kaolin 4 ~ 10%
Water-washed kaoline 4 ~ 10%
Titanium dioxide 4 ~ 10%
Modified meerschaum/nano-TiO
2matrix material 4 ~ 10%
Dispersion agent 0.1 ~ 0.6%
Wetting agent 0.1 ~ 0.6%
Defoamer 0.1 ~ 0.6%
Multifunctional assistant 0.1 ~ 0.6%
Mould inhibitor 0.1 ~ 0.6%
Film coalescence aid 0.1 ~ 0.6%
Frostproofer 0.1 ~ 0.6%
Sterilant 0.1 ~ 0.6%
Thickening material 0.1 ~ 0.6%
Water 25 ~ 30%.
Further, described modified meerschaum/nano-TiO
2matrix material is synthesized into by in-situ synthesis by sepiolite and tetrabutyl titanate.
Again further, described rare earth additive is Gd
2o
3, Eu
2o
3or the mixture of the two.
Preferred as one, this coating is made up of the component of following weight percents: coarse whiting 29%, emulsion 11%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 6%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.4%, frostproofer 0.3%, sterilant 0.3%, thickening material 0.4%, water 29%.
Preferred as another kind, this coating is made up of the component of following weight percents: coarse whiting 27%, emulsion 12%, calcined kaolin 9%, water-washed kaoline 7%, titanium dioxide 7%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.2%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.5%, sterilant 0.2%, thickening material 0.5%, water 28%.
Above-mentioned modified meerschaum/nano-TiO
2the preparation method of matrix material coating, comprises the following steps:
(1) water, wetting agent, dispersion agent, multifunctional assistant and titanium dioxide are joined in stirred pot, stirring at low speed 3 ~ 5min;
(2) again by modified meerschaum/nano-TiO
2matrix material, calcined kaolin, water-washed kaoline and coarse whiting join in stirred pot, high speed dispersion 10 ~ 15min;
(3) then mould inhibitor, emulsion, film coalescence aid, frostproofer, sterilant and thickening material are joined in stirred pot, stirring at low speed 3 ~ 5min;
(4) finally defoamer is joined in stirred pot, stirring at low speed 10 ~ 15min.
Wherein, modified meerschaum/nano-TiO
2the preparation method of matrix material is as follows:
A, in there-necked flask, add sepiolite, slowly add ethanol, tetrabutyl titanate and stir 5 ~ 30min with the speed of 200 ~ 800r/min in water bath with thermostatic control, and then ultrasonic disperse 5 ~ 30min, sepiolite and solution are mixed, obtains mixed solution;
B, rare earth additive is dissolved in concentration is less than in the dilute hydrochloric acid of 30%, add the mixed solution that step (1) obtains;
C, be warming up to 70 ~ 90 DEG C and be uniformly mixed solution with the speed of 200 ~ 500r/min ethanol is volatilized, then add water, be then heated to moisture evaporation, obtain drying solid;
D, by drying solid washing for several times, vacuum-drying 2 ~ 24 hours at the temperature of 40 ~ 60 DEG C, finally at the temperature lower calcination 3 ~ 8 hours of 400 ~ 700 DEG C, namely obtains modified meerschaum/nano-TiO
2matrix material.
Further, modified meerschaum/nano-TiO
2in the preparation of matrix material, the add-on of sepiolite is 1 ~ 10g, and the add-on of tetrabutyl titanate is 2 ~ 25ml, and the add-on of ethanol is 70 ~ 150ml; The add-on of rare earth additive is that every 5g sepiolite adds 0.01 ~ 0.5g, and the add-on of dilute hydrochloric acid is 1 ~ 3ml, and the add-on of water is 100 ~ 200ml
The present invention has the following advantages and beneficial effect:
The present invention adopts sepiolite as carrier of photocatalyst, have cheap, specific surface area is large, the strength of materials is high, good stability, be not easy advantages such as being corroded, the most important thing is to make to be carried on photocatalyst on carrier as much as possible by lighting activation, thus play maximum photocatalytic effect; In addition, sepiolite has excellent pore passage structure, and determine it and possess the physical chemistry functions such as good absorption, filtration, function vector and ion-exchange while possessing good surface charge effect and Hole bottom cavity blast, thus sepiolite is a kind of desirable TiO
2photochemical catalysis carrier.Sepiolite is to nano-TiO
2have absorption and dissemination preferably, can produce OH under natural light, this reunion that not only can solve nano material and the problem of not easily disperseing, can also strengthen the photocatalysis performance of nano material; So coating prepared by the present invention has good in formaldehyde ability, room air pollution can be reduced widely, very environmental protection.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but embodiments of the present invention are not limited to this.
Embodiment 1
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents: coarse whiting 29%, emulsion 11%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 6%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.4%, frostproofer 0.3%, sterilant 0.3%, thickening material 0.4%, water 29%.Its preparation method is as follows:
Modified meerschaum/nano-TiO
2the preparation of matrix material:
A, in 250ml there-necked flask, add 5g sepiolite, slowly add 100ml ethanol, 12.5ml tetrabutyl titanate and stir 30min with the speed of 400r/min under 25 DEG C of waters bath with thermostatic control, and then ultrasonic disperse 30min, sepiolite and solution are mixed;
B, by 0.1gGd
2o
3be dissolved in 1.5ml dilute hydrochloric acid, join in there-necked flask;
C, be warming up to 90 DEG C and volatilize completely to ethanol with the speed stirring solution of 500r/min, add 187.5ml water, be heated to moisture and volatilize completely;
D, by products in water washing repeatedly, be placed in the vacuum drying oven of 60 DEG C after 12h, 4h calcined by the retort furnace putting into 500 DEG C, namely obtains modified meerschaum/nano-TiO
2matrix material.Wherein repeatedly washing at least washes twice.
Utilize UV-Vis DRS to detect the optical property of catalyzer, sepiolite/nano-TiO can be found
2matrix material wavelength is less than the photoabsorption of 400nm, and the sepiolite/nano-TiO of rare earth doped additive
2matrix material is the photoabsorption of 400nm-500nm, substantially increases the utilization ratio of natural light, thus can improve the photocatalysis efficiency of matrix material.
The preparation of coating:
(1) according to above-mentioned weight percent, water, wetting agent, dispersion agent, multifunctional assistant and titanium dioxide are joined in stirred pot, stirring at low speed 3 ~ 5min;
(2) again according to above-mentioned weight percent by modified meerschaum/nano-TiO
2matrix material, calcined kaolin, water-washed kaoline and coarse whiting join in stirred pot, high speed dispersion 10 ~ 15min;
(3) then according to above-mentioned weight percent, mould inhibitor, emulsion, film coalescence aid, frostproofer, sterilant and thickening material are joined in stirred pot, stirring at low speed 3 ~ 5min;
(4) finally according to above-mentioned weight percent, defoamer is joined in stirred pot, stirring at low speed 10 ~ 15min.
Embodiment 2
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents: coarse whiting 27%, emulsion 12%, calcined kaolin 9%, water-washed kaoline 7%, titanium dioxide 7%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.2%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.5%, sterilant 0.2%, thickening material 0.5%, water 28%.Its preparation method and embodiment 1 difference are modified meerschaum/nano-TiO
2the preparation method of matrix material is different, and the preparation method of coating is identical.
The present embodiment modified meerschaum/nano-TiO
2the preparation of matrix material:
A, in 250ml there-necked flask, add 8g sepiolite, slowly add 130ml ethanol, 20ml tetrabutyl titanate and stir 22min with the speed of 600r/min under 40 DEG C of waters bath with thermostatic control, and then ultrasonic disperse 35min, sepiolite and solution are mixed;
B, by 0.2gEu
2o
3be dissolved in 3ml dilute hydrochloric acid, join in there-necked flask;
C, be warming up to 80 DEG C and volatilize completely to ethanol with the speed stirring solution of 600r/min, add 200ml water, be heated to moisture and volatilize completely;
D, by products in water washing repeatedly, be placed in the vacuum drying oven of 75 DEG C after 10h, 3.5h calcined by the retort furnace putting into 560 DEG C, namely obtains modified meerschaum/nano-TiO
2matrix material.
Embodiment 3
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents: coarse whiting 30%, emulsion 15%, calcined kaolin 10%, water-washed kaoline 4%, titanium dioxide 10%, modified meerschaum/nano-TiO
2matrix material 4%, dispersion agent 0.6%, wetting agent 0.1%, defoamer 0.2%, multifunctional assistant 0.1%, mould inhibitor 0.1%, film coalescence aid 0.6%, frostproofer 0.1%, sterilant 0.1%, thickening material 0.1%, water 25%.Its preparation method and embodiment 1 difference are modified meerschaum/nano-TiO
2the preparation method of matrix material is different, and the preparation method of coating is identical.
The present embodiment modified meerschaum/nano-TiO
2the preparation of matrix material:
A, in 250ml there-necked flask, add 8g sepiolite, slowly add 130ml ethanol, 20ml tetrabutyl titanate and stir 22min with the speed of 600r/min under 40 DEG C of waters bath with thermostatic control, and then ultrasonic disperse 35min, sepiolite and solution are mixed;
B, by 0.1gGd
2o
3and 0.1Eu
2o
3be dissolved in 3ml dilute hydrochloric acid, join in there-necked flask;
C, be warming up to 80 DEG C and volatilize completely to ethanol with the speed stirring solution of 600r/min, add 200ml water, be heated to moisture and volatilize completely;
D, by products in water washing repeatedly, be placed in the vacuum drying oven of 75 DEG C after 10h, 3.5h calcined by the retort furnace putting into 560 DEG C, namely obtains modified meerschaum/nano-TiO
2matrix material.
Embodiment 4
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents: coarse whiting 26%, emulsion 11%, calcined kaolin 4%, water-washed kaoline 10%, titanium dioxide 4%, modified meerschaum/nano-TiO
2matrix material 10%, dispersion agent 0.6%, wetting agent 0.6%, defoamer 0.6%, multifunctional assistant 0.6%, mould inhibitor 0.6%, film coalescence aid 0.4%, frostproofer 0.6%, sterilant 0.4%, thickening material 0.6%, water 30%.Its preparation method is identical with embodiment 1.
Embodiment 5
Adsorbable, decompose the difunctional coating except formaldehyde, this coating is made up of the component of following weight percents: coarse whiting 25%, emulsion 13%, calcined kaolin 5%, water-washed kaoline 9%, titanium dioxide 5%, modified meerschaum/nano-TiO
2matrix material 9%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.5%, multifunctional assistant 0.5%, mould inhibitor 0.4%, film coalescence aid 0.5%, frostproofer 0.2%, sterilant 0.6%, thickening material 0.6%, water 30%.Its preparation method is identical with embodiment 1.
Detection data of the present invention are as following table 1:
Table 1
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| State in a reservoir | Without lump, in uniform state after stirring | Without lump, in uniform state after stirring | Without lump, in uniform state after stirring | Without lump, in uniform state after stirring | Without lump, in uniform state after stirring |
| Application property | Brushing twice are accessible | Brushing twice are accessible | Brushing twice are accessible | Brushing twice are accessible | Brushing twice are accessible |
| Appearance of film | Normally | Normally | Normally | Normally | Normally |
| Time of drying (surface drying)/h≤ | 2 | 2 | 2 | 2 | 2 |
| PH value | 8.5 | 8.6 | 8.4 | 8.7 | 8.7 |
| Fineness (μm)≤ | 55 | 55 | 55 | 55 | 55 |
| Viscosity (KU/25 DEG C ± 1o) | 100 | 95 | 102 | 98 | 96 |
| Proportion (g/cm3) | 1.37 | 1.35 | 1.36 | 1.37 | 1.38 |
| Gloss (60o) | 4 | 3 | 4 | 5 | 3 |
| Contrast ratio (white/light colored) >= | 0.945 | 0.945 | 0.945 | 0.945 | 0.945 |
Test result:
The coating taking embodiment 1 obtained is evenly coated on four pieces of sheet glass, and the method in employing " JCT1074-2008 function of purifying indoor air coating material purifying property " is to modified meerschaum/nano-TiO
2the performance of matrix material coating measures.
Table 2
Can be found out by table 2, modified meerschaum/nano-TiO that the present invention prepares
2matrix material coating has good in formaldehyde ability.
Should be noted that, above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in right of the present invention.
Claims (5)
1. adsorbable, decompose the difunctional coating except formaldehyde, it is characterized in that, this coating is made up of the component of following weight percents:
Coarse whiting 25 ~ 30%
Emulsion 10 ~ 15%
Calcined kaolin 4 ~ 10%
Water-washed kaoline 4 ~ 10%
Titanium dioxide 4 ~ 10%
Modified meerschaum/nano-TiO
2matrix material 4 ~ 10%
Dispersion agent 0.1 ~ 0.6%
Wetting agent 0.1 ~ 0.6%
Defoamer 0.1 ~ 0.6%
Multifunctional assistant 0.1 ~ 0.6%
Mould inhibitor 0.1 ~ 0.6%
Film coalescence aid 0.1 ~ 0.6%
Frostproofer 0.1 ~ 0.6%
Sterilant 0.1 ~ 0.6%
Thickening material 0.1 ~ 0.6%
Water 25 ~ 30%;
Wherein, described modified meerschaum/nano-TiO
2matrix material is synthesized into by in-situ synthesis by sepiolite, tetrabutyl titanate and rare earth additive;
Described rare earth additive is Gd
2o
3, Eu
2o
3or the mixture of the two;
Its preparation method is as follows:
(1) water, wetting agent, dispersion agent, multifunctional assistant and titanium dioxide are joined in stirred pot, stirring at low speed 3 ~ 5min;
(2) again by modified meerschaum/nano-TiO
2matrix material, calcined kaolin, water-washed kaoline and coarse whiting join in stirred pot, high speed dispersion 10 ~ 15min;
(3) then mould inhibitor, emulsion, film coalescence aid, frostproofer, sterilant and thickening material are joined in stirred pot, stirring at low speed 3 ~ 5min;
(4) finally defoamer is joined in stirred pot, stirring at low speed 10 ~ 15min.
2. according to claim 1 adsorbable, decompose the difunctional coating except formaldehyde, it is characterized in that, this coating is made up of the component of following weight percents: coarse whiting 29%, emulsion 11%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 6%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.4%, frostproofer 0.3%, sterilant 0.3%, thickening material 0.4%, water 29%.
3. according to claim 1 adsorbable, decompose the difunctional coating except formaldehyde, it is characterized in that, this coating is made up of the component of following weight percents: coarse whiting 27%, emulsion 12%, calcined kaolin 9%, water-washed kaoline 7%, titanium dioxide 7%, modified meerschaum/nano-TiO
2matrix material 7%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.2%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.5%, sterilant 0.2%, thickening material 0.5%, water 28%.
4. according to any one of claims 1 to 3 adsorbable, decompose the difunctional coating except formaldehyde, it is characterized in that, described modified meerschaum/nano-TiO
2the preparation method of matrix material is as follows:
A, in there-necked flask, add sepiolite, slowly add ethanol, tetrabutyl titanate and stir 5 ~ 30min with the speed of 200 ~ 800r/min in water bath with thermostatic control, and then ultrasonic disperse 5 ~ 30min, sepiolite and solution are mixed, obtains mixed solution;
B, rare earth additive is dissolved in concentration is less than in the dilute hydrochloric acid of 30%, add the mixed solution that steps A obtains;
C, be warming up to 70 ~ 90 DEG C and be uniformly mixed solution with the speed of 200 ~ 500r/min ethanol is volatilized, then add water, be then heated to moisture evaporation, obtain drying solid;
D, by drying solid washing for several times, vacuum-drying 2 ~ 24 hours at the temperature of 40 ~ 60 DEG C, finally at the temperature lower calcination 3 ~ 8 hours of 400 ~ 700 DEG C, namely obtains modified meerschaum/nano-TiO
2matrix material.
5. according to any one of claims 1 to 3 adsorbable, decompose the difunctional coating except formaldehyde, it is characterized in that, modified meerschaum/nano-TiO
2in the preparation of matrix material, the add-on of sepiolite is 1 ~ 10g, and the add-on of tetrabutyl titanate is 2 ~ 25ml, and the add-on of ethanol is 70 ~ 150ml; The add-on of rare earth additive is that every 5g sepiolite adds 0.01 ~ 0.5g, and the add-on of dilute hydrochloric acid is 1 ~ 3ml, and the add-on of water is 100 ~ 200ml.
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| CN104449389B (en) * | 2014-11-10 | 2017-06-09 | 厦门防水博士建筑工程有限公司 | A kind of metal Roof coating and preparation method thereof |
| CN104893444B (en) * | 2015-05-29 | 2017-05-17 | 江苏恒智纳米科技有限公司 | Multifunctional aqueous nano-coating |
| CN105017905A (en) * | 2015-08-13 | 2015-11-04 | 董善刚 | High-weather-resistance nano-modified haze removal exterior wall coating |
| CN107935450A (en) * | 2017-11-30 | 2018-04-20 | 钟永松 | A kind of construction material of insulation |
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