CN103496884A - Formaldehyde eliminating coating with dual functions of adsorption and decomposition and preparation method thereof - Google Patents
Formaldehyde eliminating coating with dual functions of adsorption and decomposition and preparation method thereof Download PDFInfo
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- CN103496884A CN103496884A CN201310459491.1A CN201310459491A CN103496884A CN 103496884 A CN103496884 A CN 103496884A CN 201310459491 A CN201310459491 A CN 201310459491A CN 103496884 A CN103496884 A CN 103496884A
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Abstract
The invention discloses a formaldehyde eliminating coating with dual functions of adsorption and decomposition, which solves the problem that the existing coatings release harmful substances such as formaldehyde into air and have no function in eliminating formaldehyde. The formaldehyde eliminating coating comprises the following components by weight percent: 25-30% of coarse whiting, 10-15% of emulsion, 4-10% of calcined kaolin, 4-10% of washed kaolin, 4-10% of titanium dioxide, 4-10% of sepiolite or nanometer TiO2 composite material, 0.1-0.6% of dispersing agent, 0.1-0.6% of wetting agent, 0.1-0.6% of antifoaming agent, 0.1-0.6% of multifunctional assistant, 0.1-0.6% of mildew preventive, 0.1-0.6% of coalescing agent, 0.1-0.6% of antifreezing agent, 0.1-0.6% of bactericide, 0.1-0.6% of thickener, and 25-30% of water. The invention also provides a preparation method of the coating. The coating has very strong function in eliminating formaldehyde, and is safe and reliable.
Description
Technical field
The present invention is specifically related to a kind of absorption, decomposes the difunctional methanal paint and preparation method thereof that removes.
Background technology
Formaldehyde is a kind of volatile organic compound, colourless, special odor is arranged, and slightly overweights air, soluble in water.Formaldehyde has material impact to HUMAN HEALTH, and eyes, respiratory tract, human body mucous membrane and skin are had to the strong impulse effect; The symptoms such as acute poisoning can cause shedding tears, runny nose, cough, cause the various respiratory tract disease; Chronic inhalation of low concentration can cause unrelenting headache, unable, insomnia etc.; Long-term skin contact can cause dermatitis, and respiratory system, Digestive tract and central nervous system generation detrimentally affect to human body, cause lung and liver immunologic dysfunction.Formaldehyde is so serious to harm, produces the attention that the effective building material product of degradation of formaldehyde has caused building trade.
At present, the house fitting pollution problem day by day is subject to people and payes attention to, and, for most of families, the main material of indoor pollution is exactly formaldehyde.Cause formaldehyde that house ornamentation the pollutes various finishing materials of originating, 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 can cause serious room air pollution to objectionable impuritiess such as release formaldehydes in air, do not possess function of removing formaldehyde simultaneously yet.
Summary of the invention
The object of the present invention is to provide a kind of absorption, decompose difunctionally except methanal paint, solving existing coating all can be to objectionable impuritiess such as release formaldehydes in air, and does not possess the problem of function of removing formaldehyde.
The present invention is achieved through the following technical solutions:
A kind of absorption, decompose difunctionally except methanal paint, this coating is comprised of the component of following weight percent:
Coarse whiting 25～30%
Emulsion 10～15%
Calcined kaolin 4～10%
Water-washed kaoline 4～10%
Titanium dioxide 4～10%
Sepiolite/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 sepiolite/nano-TiO
2matrix material is synthesized into by in-situ synthesis by sepiolite and tetrabutyl titanate.
As a kind of preferred, this coating is comprised of the component of following weight percent: coarse whiting 28%, emulsion 13%, calcined kaolin 8%, water-washed kaoline 7%, titanium dioxide 7%, sepiolite/nano-TiO
2matrix material 6%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.3%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.4%, sterilant 0.3%, thickening material 0.4%, water 28%.
Preferred as another kind, this coating is comprised of the component of following weight percent: coarse whiting 27%, emulsion 14%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 8%, sepiolite/nano-TiO
2matrix material 5%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.5%, frostproofer 0.2%, sterilant 0.4%, thickening material 0.3%, water 28%.
The preparation method of above-mentioned sepiolite/nano TiO 2 matrix material coating comprises the following steps:
(1) water, wetting agent, dispersion agent, multifunctional assistant and titanium dioxide are joined in stirred pot to stirring at low speed 3～5min;
(2) again by sepiolite/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 to stirring at low speed 3～5min;
(4) finally defoamer is joined in stirred pot to stirring at low speed 10～15min.
Wherein, sepiolite/nano-TiO
2the preparation method of matrix material is as follows:
A, in there-necked flask, add sepiolite, slowly add ethanol, the tetrabutyl titanate speed with 100～1400r/min in water bath with thermostatic control to stir 1～60min, and then ultrasonic dispersion 1～60min, sepiolite and solution are mixed;
B, be warming up to 79～95 ℃ of speed stirring solutions with 300～800r/min to ethanol and volatilize fully, add hydrochloric acid and water, then be heated to moisture and volatilize fully, obtain drying solid;
C, by drying solid washing for several times, at the temperature of 30～90 ℃, vacuum-drying is 2～24 hours, finally, the temperature lower calcination of 500～680 ℃ 1～8 hour, obtains sepiolite/nano-TiO
2matrix material.
Further, sepiolite/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 hydrochloric acid is the hydrochloric acid that every 10g sepiolite adds 0.01～0.05mol, 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, the advantage such as be not easy to be corroded, the most important thing is to make to be carried on photocatalyst on carrier as much as possible by lighting activation, thereby bring into play maximum photocatalytic effect; In addition, sepiolite has good pore passage structure, determined that it possesses the physical chemistry functions such as good absorption, filtration, function vector and ion-exchange when possessing good surface charge effect and duct effect, thereby sepiolite is a kind of desirable TiO
2the photochemical catalysis carrier.Sepiolite is to nano-TiO
2absorption and dissemination are preferably arranged, under natural light, can produce OH, this not only can solve the reunion of nano material and be difficult for the problem of disperseing, and can also strengthen the photocatalysis performance of nano material; So coating prepared by the present invention has the good formaldehyde ability of removing, and can reduce widely room air pollution, 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
A kind of absorption, decompose difunctionally except methanal paint, this coating is comprised of the component of following weight percent: coarse whiting 28%, emulsion 13%, calcined kaolin 8%, water-washed kaoline 7%, titanium dioxide 7%, sepiolite/nano-TiO
2matrix material 6%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.3%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.4%, sterilant 0.3%, thickening material 0.4%, water 28%.Its preparation method is as follows:
Sepiolite/nano-TiO
2the preparation of matrix material:
A, in the 250ml there-necked flask, add the 5g sepiolite, slowly add 100ml ethanol, the 12.5ml tetrabutyl titanate speed with 400r/min under 25 ℃ of waters bath with thermostatic control to stir 30min, and then ultrasonic dispersion 30min, sepiolite and solution are mixed;
B, be warming up to 90 ℃ of speed stirring solutions with 500r/min to ethanol and volatilize fully, add 187.5ml water and 1.25ml hydrochloric acid, be heated to moisture and volatilize fully;
C, product is washed with water repeatedly, be placed in the vacuum drying oven of 60 ℃ after 12h, put into the retort furnace of 500 ℃ and calcine 4h, obtain sepiolite/nano-TiO
2matrix 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 to stirring at low speed 3～5min;
(2) again according to above-mentioned weight percent by sepiolite/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 to stirring at low speed 3～5min;
(4) finally according to above-mentioned weight percent, defoamer is joined in stirred pot to stirring at low speed 10～15min.
Embodiment 2
A kind of absorption, decompose difunctionally except methanal paint, this coating is comprised of the component of following weight percent: coarse whiting 27%, emulsion 14%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 8%, sepiolite/nano-TiO
2matrix material 5%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.5%, frostproofer 0.2%, sterilant 0.4%, thickening material 0.3%, water 28%.The difference of its preparation method and embodiment 1 is sepiolite/nano-TiO
2preparation method's difference of matrix material, and the preparation method of coating is identical.
Sepiolite/the nano-TiO of the present embodiment
2the preparation method of matrix material is as follows:
A, in the 250ml there-necked flask, add the 8g sepiolite, slowly add 130ml ethanol, the 20ml tetrabutyl titanate speed with 600r/min under 40 ℃ of waters bath with thermostatic control to stir 22min, and then ultrasonic dispersion 35min, sepiolite and solution are mixed;
B, be warming up to 80 ℃ of speed stirring solutions with 600r/min to ethanol and volatilize fully, add 200ml water and 1.5ml hydrochloric acid, be heated to moisture and volatilize fully;
C, product is washed with water repeatedly, be placed in the vacuum drying oven of 75 ℃ after 10h, put into the retort furnace of 560 ℃ and calcine 3.2h, obtain sepiolite/nano-TiO
2matrix material.
Embodiment 3
A kind of absorption, decompose difunctionally except methanal paint, this coating is comprised of the component of following weight percent: coarse whiting 30%, emulsion 15%, calcined kaolin 10%, water-washed kaoline 4%, titanium dioxide 10%, sepiolite/nano-TiO
2matrix material 4%, dispersion agent 0.6%, wetting agent 0.1%, defoamer 0.1%, multifunctional assistant 0.6%, mould inhibitor 0.2%, film coalescence aid 0.1%, frostproofer 0.1%, sterilant 0.1%, thickening material 0.1%, water 25%.The difference of its preparation method and embodiment 1 is sepiolite/nano-TiO
2preparation method's difference of matrix material, and the preparation method of coating is identical.
Sepiolite/the nano-TiO of the present embodiment
2the preparation method of matrix material is as follows:
A, in the 250ml there-necked flask, add the 3g sepiolite, slowly add 80ml ethanol, the 10ml tetrabutyl titanate speed with 800r/min under 30 ℃ of waters bath with thermostatic control to stir 18min, and then ultrasonic dispersion 30min, sepiolite and solution are mixed;
B, be warming up to 85 ℃ of speed stirring solutions with 550r/min to ethanol and volatilize fully, add 145ml water and 1.0ml hydrochloric acid, be heated to moisture and volatilize fully;
C, product is washed with water repeatedly, be placed in the vacuum drying oven of 85 ℃ after 7.5h, put into the retort furnace of 610 ℃ and calcine 2.8h, obtain sepiolite/nano-TiO
2matrix material.
Embodiment 4
A kind of absorption, decompose difunctionally except methanal paint, this coating is comprised of the component of following weight percent: coarse whiting 26%, emulsion 11%, calcined kaolin 4%, water-washed kaoline 10%, titanium dioxide 4%, sepiolite/nano-TiO
2matrix material 10%, dispersion agent 0.6%, wetting agent 0.6%, defoamer 0.6%, multifunctional assistant 0.6%, mould inhibitor 0.5%, film coalescence aid 0.5%, frostproofer 0.5%, sterilant 0.5%, 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 |
| At condition in container | Without lump, be uniform state after stirring | Without lump, be uniform state after stirring | Without lump, be uniform state after stirring | Without lump, be uniform state after stirring |
| Application property | The brushing twice are accessible | The brushing twice are accessible | The brushing twice are accessible | The brushing twice are accessible |
| Appearance of film | Normally | Normally | Normally | Normally |
| Time of drying (surface drying)/h≤ | 2 | 2 | 2 | 2 |
| The pH value | 8.5 | 8.6 | 8.4 | 8.7 |
| Fineness (μ m)≤ | 60 | 60 | 60 | 60 |
| Viscosity (KU/25 ℃ ± 1o) | 100 | 98 | 102 | 101 |
| Proportion (g/cm3) | 1.33 | 1.35 | 1.31 | 1.33 |
| Gloss (60o) | 3 | 2 | 4 | 3 |
| Contrast ratio (white/light colored) >= | 0.95 | 0.95 | 0.95 | 0.95 |
Test result:
Take the coating that embodiment 1 makes and evenly be coated on four sheet glass, adopt method on " JCT1074-2008 function of purifying indoor air coating material purifying property " to sepiolite/nano-TiO
2the performance of matrix material coating is measured.
Table 2
Can find out sepiolite/nano-TiO that the present invention prepares by table 2
2matrix material coating has the good formaldehyde ability of removing.
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, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in claim scope of the present invention.
Claims (7)
1. an absorption, decompose and difunctionally it is characterized in that except methanal paint, this coating is comprised of the component of following weight percent:
Coarse whiting 25～30%
Emulsion 10～15%
Calcined kaolin 4～10%
Water-washed kaoline 4～10%
Titanium dioxide 4～10%
Sepiolite/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%.
2. a kind of absorption according to claim 1, decompose difunctionally except methanal paint, it is characterized in that described sepiolite/nano-TiO
2matrix material is synthesized into by in-situ synthesis by sepiolite and tetrabutyl titanate.
3. a kind of absorption according to claim 2, decompose difunctional except methanal paint, it is characterized in that, described coating is comprised of the component of following weight percent: coarse whiting 28%, emulsion 13%, calcined kaolin 8%, water-washed kaoline 7%, titanium dioxide 7%, sepiolite/nano-TiO
2matrix material 6%, dispersion agent 0.4%, wetting agent 0.3%, defoamer 0.3%, multifunctional assistant 0.3%, mould inhibitor 0.3%, film coalescence aid 0.3%, frostproofer 0.4%, sterilant 0.3%, thickening material 0.4%, water 28%.
4. a kind of absorption according to claim 2, decompose difunctional except methanal paint, it is characterized in that, this coating is comprised of the component of following weight percent: coarse whiting 27%, emulsion 14%, calcined kaolin 7%, water-washed kaoline 8%, titanium dioxide 8%, sepiolite/nano-TiO
2matrix material 5%, dispersion agent 0.3%, wetting agent 0.4%, defoamer 0.2%, multifunctional assistant 0.3%, mould inhibitor 0.4%, film coalescence aid 0.5%, frostproofer 0.2%, sterilant 0.4%, thickening material 0.3%, water 28%.
5. the described a kind of absorption of claim 1～4 any one, decompose the difunctional preparation method except methanal paint, it is characterized in that, described absorption, decompose the difunctional concrete preparation method except methanal paint:
(1) water, wetting agent, dispersion agent, multifunctional assistant and titanium dioxide are joined in stirred pot to stirring at low speed 3～5min;
(2) again by sepiolite/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 to stirring at low speed 3～5min;
(4) finally defoamer is joined in stirred pot to stirring at low speed 10～15min.
6. a kind of absorption according to claim 5, decompose the difunctional preparation method except methanal paint, it is characterized in that described sepiolite/nano-TiO
2the preparation method of matrix material is as follows:
A, in there-necked flask, add sepiolite, slowly add ethanol, the tetrabutyl titanate speed with 100～1400r/min in water bath with thermostatic control to stir 1～60min, and then ultrasonic dispersion 1～60min, sepiolite and solution are mixed;
B, be warming up to 79～95 ℃ of speed stirring solutions with 300～800r/min to ethanol and volatilize fully, add hydrochloric acid and water, then be heated to moisture and volatilize fully, obtain drying solid;
C, by drying solid washing for several times, at the temperature of 30～90 ℃, vacuum-drying is 2～24 hours, finally, the temperature lower calcination of 500～680 ℃ 1～8 hour, obtains sepiolite/nano-TiO
2matrix material.
7. a kind of absorption according to claim 6, decompose the difunctional preparation method except methanal paint, it is characterized in that sepiolite/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 hydrochloric acid is the hydrochloric acid that every 10g sepiolite adds 0.01～0.05mol, and the add-on of water is 100～200ml.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310459491.1A CN103496884B (en) | 2013-09-30 | 2013-09-30 | One is adsorbed, it is difunctional except methanal paint and preparation method thereof to decompose |
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|---|---|---|---|
| CN201310459491.1A CN103496884B (en) | 2013-09-30 | 2013-09-30 | One is adsorbed, it is difunctional except methanal paint and preparation method thereof to decompose |
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| CN103496884B CN103496884B (en) | 2015-11-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107216759A (en) * | 2017-06-21 | 2017-09-29 | 长沙标朗住工科技有限公司 | A kind of high-performance indoor air purification aqueous inner wall paint and preparation method thereof |
| CN109651959A (en) * | 2018-11-29 | 2019-04-19 | 长沙标朗住工科技有限公司 | A kind of water paint and preparation method thereof |
| CN110105821A (en) * | 2019-04-11 | 2019-08-09 | 常州巢典建筑科技有限公司 | It is a kind of inorganic except formaldehyde degerming wall covering and preparation method thereof |
| CN113149563A (en) * | 2021-04-29 | 2021-07-23 | 长沙市神宇建材有限公司 | Silicon-based nano wall renovating waterproof material |
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| CN107216759A (en) * | 2017-06-21 | 2017-09-29 | 长沙标朗住工科技有限公司 | A kind of high-performance indoor air purification aqueous inner wall paint and preparation method thereof |
| CN109651959A (en) * | 2018-11-29 | 2019-04-19 | 长沙标朗住工科技有限公司 | A kind of water paint and preparation method thereof |
| CN110105821A (en) * | 2019-04-11 | 2019-08-09 | 常州巢典建筑科技有限公司 | It is a kind of inorganic except formaldehyde degerming wall covering and preparation method thereof |
| CN113149563A (en) * | 2021-04-29 | 2021-07-23 | 长沙市神宇建材有限公司 | Silicon-based nano wall renovating waterproof material |
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| CN103496884B (en) | 2015-11-25 |
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