CN105238251A - Coating for preventing and controlling haze - Google Patents
Coating for preventing and controlling haze Download PDFInfo
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- CN105238251A CN105238251A CN201510781061.0A CN201510781061A CN105238251A CN 105238251 A CN105238251 A CN 105238251A CN 201510781061 A CN201510781061 A CN 201510781061A CN 105238251 A CN105238251 A CN 105238251A
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- weight
- haze
- coating composition
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Abstract
The invention discloses a water soluble coating composition for preventing and controlling haze. The water soluble coating composition for preventing and controlling the haze comprises the following components: A) water soluble polyurethane with solid content of 30-45wt%, wherein the water soluble polyurethane has number-average molecular weight Mn of 500-20000 and weight-average molecular weight Mw of 20000-500000, a hydroxyl value of 0-150mg KOH/g and an acid value of 15-35mg KOH/g; B) 15-25wt% of polyisocyanate with at least partially closed isocyanate groups; C) an effective quantity of pigment; D) 2-5% of a catalyst, wherein the catalyst comprises a carrier, an active component and a cocatalyst; and E) the balance of water. The water soluble coating composition for preventing and controlling the haze can be arranged in a closed venue or sprayed to appearance of a building and can realize a good prevention and control effect on large-scale haze.
Description
Technical field
The present invention relates to paint technology field, be specifically related to a kind of coating preventing and treating haze.
Background technology
Haze weather is a kind of topsoil state, haze is the general statement to suspended particulate content overproof various in air, and especially PM2.5 (equivalent aerodynamic diameter is less than or equal to the particulate matter of 2.5 microns) is considered to " arch-criminal " that cause haze weather.
The aerosol systems that mist is made up of the small water droplet be suspended in a large number in surface air or ice crystal.Come across autumn and winter season, be the product of ground layer water in air vapour condensation (or sublimating) more.The existence of mist can reduce air transparency, make visibility deterioration, if the horizontal visibility of target compound is reduced within 1000 meters, just the weather phenomena of the condensation vapor be suspended in surface air (or sublimating) thing is called mist (Fog).
Haze, also claims the particles such as gray haze (smog) koniology, sulfuric acid, nitric acid, organic hydrocarbon compounds that air also can be made muddy.The horizontal visibility of target compound is called mist or mist (Mist) in this phenomenon of 1000-10000 rice.Formed mist time atmospheric moisture should be saturated (when existing if any a large amount of nucleus of condensation, relative humidity not necessarily reach 100% just may occur saturated).Due to the mist scattering of liquid water or ice crystal composition light and wavelength relationship not quite, thus mist seems to be creamy white or Bluish white and grey.Sulfurous gas, oxynitride and pellet are the main compositions of haze.
2013, " haze " became annual keyword.In the January of this year, 4 times haze process shrouds 30 provinces (district, city), and in Beijing, only having 5 days is not haze sky.Have report display, in 500 cities of Largest In China, only reach the air quality standard of world health organisation recommendations less than the city of 1%, meanwhile, polluting 10 the most serious cities in the world has 7 in China.
The harm that haze produces human body is as follows:
(1) on the impact of respiratory system
The moiety of haze is very complicated, comprises hundreds of atmospheric chemistry particulate matter.The aerosol particles that the mainly diameter be wherein harmful to health is less than 10 microns, as mineral grain thing, sea salt, vitriol, nitrate, Organic aerosol particle, fuel and automobile exhaust gas etc., it directly can enter and stick in human respiratory tract and alveolar.Especially submicron particle can be deposited in upper and lower respiratory tract and alveolar respectively, causes the illness such as acute rhinitis and acute bronchitis.For chronic respiratory system diseases patients such as bronchial asthma, chronic bronchitis, obstructive emphysema and chronic obstructive pulmonary diseases, haze weather can make state of an illness acute attack or acute exacerbation.If be in this environment for a long time also can bring out lung cancer.
(2) on the impact of cardiovascular systems
Haze sky is also very serious on the impact of human body cardiovascular and cerebrovascular diseases, normal blood circulation can be hindered, cause cardiovascular diseases, hypertension, coronary heart disease, Intracerebral hemorrhage, stenocardia, myocardial infarction, heart failure etc. may be brought out, make chronic bronchitis occur cor pulmonale etc.
In addition, thick fog weather pressure ratio is lower, and people can produce a kind of sensation of agitation, and blood pressure can increase naturally to some extent.On the one hand often temperature is lower the greasy weather again, and some hypertension, patients with coronary heart disease go to suddenly cold outdoor from warm indoor, blood vessel expands with heat and contract with cold, and also can make elevation of blood pressure, causes the generation of apoplexy, myocardial infarction.The careful reply so heart and brain blood patient must take medicine on time.
(3) haze weather also can cause that surface layer is ultraviolet to be weakened, and make the increased activity of the infectivity germ in air, transmissible disease increases.
(4) child growth is unfavorable for.Because sunshine in greasy weather reduces, children's uviolizing is not enough, and in body, vitamins D generates not enough, greatly reduces, serious meeting causes Infant Rickets, children growth slows down to the absorption of calcium.
(5) Mental health is affected
Expert points out, there is impact in the lasting large greasy weather on the psychology of people and health, and say psychologically, the large greasy weather can cause oppressiveness, oppressive impression to people, can stimulate or aggravate the state of mental depression.In addition, due to the subatmospheric that greasy weather light is more weak and cause, some people can produce spiritual sluggishness, listless phenomenon in the greasy weather.
(6) reproductive performance is affected
There are some researches show, the crowd of long-term exposure in the air of high density pollution, the success ratio of its sperm the time of fertilization in vitro may reduce.Researchist has also found the association between toxic air and male fecundity decline.
On November 5th, 2013, " climate change Green Book: reply climate change report (2013) " that the Chinese Academy of Social Sciences, China Meteorological Administration combine issue is pointed out, immediate and mid-term China haze weather is totally in increase trend.Wherein, mist number of days is in obviously reducing, and haze number of days obviously increases, and persistence haze process increases significantly.
At present, to the prophylactico-therapeutic measures of haze, indoor are only adopt the form of air purifier or air-conditioning to purify air, for the self-purification function of wall paint, have no bibliographical information.
Summary of the invention
The object of the invention is to propose a kind of coating preventing and treating haze, this coating can be sprayed at indoor wall on a large scale, can remove the haze in room air fast.
For reaching this object, the present invention by the following technical solutions:
Prevent and treat a water soluble paint for haze, described coating comprises
A) aqurous ployurethane of 30-45% solid content by weight, it has 500-20, the number-average molecular weight Mn of 000 and 20,000-500, the hydroxyl value of the weight-average molecular weight Mw of 000,0-150mgKOH/g and the acid number of 15-35mgKOH/g;
B) polyisocyanates with the isocyanate groups closed at least partly of 15%-25% by weight;
C) pigment of significant quantity;
D) catalyzer of 2%-5%, described catalyzer comprises carrier, active ingredient and promotor;
E) excess water.
Described carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30;
Described active ingredient is the V doped with Sb
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Sb:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active ingredient weight content is in the catalyst 0.3%-10%, preferred 0.5-%-8%, more preferably 2%-5%.Such as, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%.Described x is 0.1-0.5, such as 0.2,0.3,0.4.
Described promotor is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described promotor weight content is in the catalyst 0.3%-6%, preferred 0.5%-5%.Such as, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%.
Preferably, the weight ratio of described active ingredient and promotor is 5:1 ~ 2:1.Such as 4.5:1,4:1,3.5:1,3:1,2.5:1.
The preparation method of described catalyzer can take conventional pickling process and other alternative methods, the prior art unrestricted choice that those skilled in the art can grasp according to it, and the present invention repeats no more.
The present invention by choosing specific β zeolite as carrier, and chooses the V doped with Sb of specified proportion
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture is as activeconstituents, silver and palladium are as promotor, this catalyzer is made to produce synergistic effect, make that the control of this coating to haze is efficient reaches 100%, effectively can decompose oxynitride and the oxysulfide of air, the content of described oxynitride and oxysulfide is reduced to less than 0.1 milligram/cubic metre, simultaneously active high, be convenient to arrange, can spray in closed venue or be sprayed at interior of building, good prevention effect can be played to the haze of indoor.
Embodiment
The present invention is described catalyzer of the present invention by following embodiment.
Embodiment 1
The dibutyl tin laurate of the acetone of the polycarbonate diol of 20.36 weight parts, 6.5 weight parts and 0.004 weight part is introduced the four neck glass reactors that agitator, condenser and thermopair are housed, then mixture is heated to 50 DEG C and homogenize.At such a temperature, the isophorone diisocyanate of 9.3 weight parts was evenly added in 30 minutes.Then the acetone of 0.5 weight part is added.Temperature is remained on 50 DEG C, until reach the NCO content of 6.8-7.2% (relative to solution).Once after reaching this NCO content, namely add the dimethylol propionic acid of 1.88 weight parts, the dimethylisopropylamine of 1.04 weight parts and the acetone of 0.5 weight part.Then, temperature is remained on 50 DEG C, until reach the NCO content of 3.1-3.4% (relative to solution).Once after reaching this NCO content, namely close heating, in 10 minutes, add the deionized water of 48.0 weight parts.Then, in 5 minutes, add the mixture of the 0.64 weight part quadrol be dissolved in 11.32 weight parts waters immediately.Then temperature is risen to 70 DEG C, carry out vacuum distilling to remove acetone.Next, by adding deionized water, the aqurous ployurethane of the solid content of by weight 35% is formed.
Prepare catalyzer by pickling process, carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30, and described active ingredient is the V doped with Sb
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Sb:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active ingredient weight content is in the catalyst 4%, and described x is 0.25;
Described promotor is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described promotor weight content is in the catalyst 1%.
The aqurous ployurethane prepared, catalyzer, polyisocyanates, pigment are put into suitable quantity of water and stirred, obtains coating composition of the present invention.
Described coating composition is sprayed at closed indoor interior wall, windows when PM2.5 is 300, make indoor PM2.5 identical with outdoor, close the doors and windows, test PM2.5 after 1 hour, its value is only 8, and the content of oxynitride and oxysulfide is all less than 0.1 milligram/cubic metre.
Comparative example 1
The carrier of embodiment 1 is replaced with gac, and all the other conditions are constant, and the PM2.5 value after 1 hour is 79, and the content of oxynitride and oxysulfide is all greater than 1.2 milligrams/cubic metre.
Comparative example 2
The Sb of embodiment 1 is replaced with La, and all the other conditions are constant, and the PM2.5 value after 1 hour is 86, and the content of oxynitride and oxysulfide is all greater than 1.15 milligrams/cubic metre.
Comparative example 3
The palladium of embodiment 1 is replaced with Co, and all the other conditions are constant, and the PM2.5 value after 1 hour is 55, and the content of oxynitride and oxysulfide is all greater than 1.4 milligrams/cubic metre.
Above-described embodiment and comparative example illustrate, there is specific contact between several component of catalyzer of the present invention, omit or replace wherein one or more, all can not reach the certain effects of the application, prove to which create synergistic effect.
Applicant states, the present invention illustrates water-soluble coating composition of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned water-soluble coating composition, does not namely mean that the present invention must rely on above-mentioned detailed water-soluble coating composition and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (5)
1. prevent and treat a water-soluble coating composition for haze, described coating comprises:
A) aqurous ployurethane of 30-45% solid content by weight, it has 500-20, the number-average molecular weight Mn of 000 and 20,000-500, the hydroxyl value of the weight-average molecular weight Mw of 000,0-150mgKOH/g and the acid number of 15-35mgKOH/g;
B) polyisocyanates with the isocyanate groups closed at least partly of 15%-25% by weight;
C) pigment of significant quantity;
D) catalyzer of 2%-5%, described catalyzer comprises carrier, active ingredient and promotor;
E) excess water;
Described carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30;
Described active ingredient is the V doped with Sb
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Sb:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active ingredient weight content is in the catalyst 0.3%-10%, and described x is 0.1-0.5;
Described promotor is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described promotor weight content is in the catalyst 0.3%-6%.
2. water-soluble coating composition as claimed in claim 1, it is characterized in that, described active ingredient weight content is in the catalyst 0.5-%-8%.
3. water-soluble coating composition as claimed in claim 2, it is characterized in that, described active ingredient weight content is in the catalyst 2%-5%.
4. water-soluble coating composition as claimed in claim 1, it is characterized in that, described promotor weight content is in the catalyst 0.5%-5%.
5. water-soluble coating composition as claimed in claim 1, it is characterized in that, the weight ratio of described active ingredient and promotor is 5:1 ~ 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781061.0A CN105238251A (en) | 2015-11-13 | 2015-11-13 | Coating for preventing and controlling haze |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781061.0A CN105238251A (en) | 2015-11-13 | 2015-11-13 | Coating for preventing and controlling haze |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105238251A true CN105238251A (en) | 2016-01-13 |
Family
ID=55036087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510781061.0A Pending CN105238251A (en) | 2015-11-13 | 2015-11-13 | Coating for preventing and controlling haze |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105238251A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090309A (en) * | 1992-08-27 | 1994-08-03 | 赫伯特股份公司 | Aqueous polyurethane resin dispersion liquid and preparation method thereof and its application in aqueous coating composition |
| CN1162322A (en) * | 1994-10-28 | 1997-10-15 | 巴斯福拉克和法本股份公司 | Paint coat composition useful in aqueous multilayer paint systems |
| CN1826363A (en) * | 2003-07-22 | 2006-08-30 | 纳幕尔杜邦公司 | Aqueous coating composition |
| CN102764643A (en) * | 2012-07-16 | 2012-11-07 | 中国科学院生态环境研究中心 | Vanadium-titanium oxide catalyst, and preparation method and application thereof |
-
2015
- 2015-11-13 CN CN201510781061.0A patent/CN105238251A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090309A (en) * | 1992-08-27 | 1994-08-03 | 赫伯特股份公司 | Aqueous polyurethane resin dispersion liquid and preparation method thereof and its application in aqueous coating composition |
| CN1162322A (en) * | 1994-10-28 | 1997-10-15 | 巴斯福拉克和法本股份公司 | Paint coat composition useful in aqueous multilayer paint systems |
| CN1826363A (en) * | 2003-07-22 | 2006-08-30 | 纳幕尔杜邦公司 | Aqueous coating composition |
| CN102764643A (en) * | 2012-07-16 | 2012-11-07 | 中国科学院生态环境研究中心 | Vanadium-titanium oxide catalyst, and preparation method and application thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |