CN104017418A - Method for preparing silicon dioxide and zinc oxide composite material - Google Patents
Method for preparing silicon dioxide and zinc oxide composite material Download PDFInfo
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- CN104017418A CN104017418A CN201310721144.1A CN201310721144A CN104017418A CN 104017418 A CN104017418 A CN 104017418A CN 201310721144 A CN201310721144 A CN 201310721144A CN 104017418 A CN104017418 A CN 104017418A
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Abstract
The invention discloses a method for preparing a silicon dioxide and zinc oxide composite material. The method comprises the following steps of firstly, slowly adding porous silicon dioxide into a zinc nitrate solution, zinc acetate solution or zinc sulfate solution, then, slowly adding a urea solution or ammonia solution, adjusting the pH value of the solution to 8.5, reacting for 8-10 hours at the constant temperature of 70-95 DEG C, finally, filtrating, drying and calcining, thereby obtaining the silicon dioxide and zinc oxide composite material. By applying the silicon dioxide and zinc oxide composite material prepared by the method to the preparation of dry-powder latex paint, the prepared dry-powder latex paint can efficiently decompose harmful gases, such as formaldehyde, toluene and the like, in air, so as to improve the quality of indoor air, and can exert a long-term bactericidal effect Instead of the traditional bactericides.
Description
Technical field
The present invention relates to field of compound material, the preparation method of especially a kind of silicon-dioxide and zinc oxide composite.
Background technology
According to related data statistics, the whole world nearly half people live in the room air of pollution, and indoor environmental pollution has caused 35.7% respiratory tract disease, 22% chronic lung disease and 15% trachitis, bronchitis and lung cancer.The investigation of international related organization is found, in the air in the buildings of the more than 30% newly-built or reconstruction in the whole world, all has the healthy disadvantageous objectionable impurities to people, and room air pollution has been put into one of 5 environmental factorss that public health is had the greatest impact.Wherein formaldehyde is typical pollutant matter.Therefore, people solve serious Formaldehyde Pollution of Indoor Air problem in the urgent need to a kind of safe and permanently effective method.
Summary of the invention
The invention provides a kind of silicon-dioxide and zinc oxide composite, by this matrix material for the preparation of dry powder emulsion paint coating, and by the dry powder emulsion paint coating making as the coating of indoor wall, can solve serious Formaldehyde Pollution of Indoor Air problem.
For solving technique scheme, the technical solution adopted in the present invention is:
The preparation process of a kind of silicon-dioxide and zinc oxide composite comprises the following steps:
A, to containing 0.1mol/LZn
2+salts solution in slowly add porous silica, and then slowly add precipitation agent; Wherein, the add-on of described porous silica is that every 100mL salts solution adds porous silica described in 10g; Described precipitation agent is a kind of in the ammonia soln of 0.4mol/L urea soln or 25%～28%; The volume ratio of described salts solution and described urea is 1:0.5～1; The volume ratio of described salts solution and described ammoniacal liquor is 1:0.1～0.3;
B, regulate the pH value to 8.5 of mixing solutions, then isothermal reaction 8 hours～10 hours at 70 ℃～95 ℃;
C, after reaction described in step B finishes, product that described reaction is obtained filters, and collects filter residue, by described filter residue at 95 ℃ dry 8 hours, then at 350 ℃～550 ℃, calcines 4 hours, obtains this silicon-dioxide and zinc oxide composite;
In technique scheme, technical scheme is more specifically: described salts solution is zinc nitrate solution, zinc acetate solution, a kind of in three kinds of solution of solution of zinc sulfate;
The raw materials of the porous silica described in step B is synthetic silica, water glass, diatomite, a kind of in four kinds of materials of zeolite powder;
The method that described diatomite is prepared porous silica is: first wash diatom original soil with water, again the diatomite after washing is calcined 2 hours at 500 ℃, collect the product I after calcining and be cooled to room temperature, then in described product I, adding concentration is 1.4% sulphuric acid soln, mix, at 220 ℃, calcine 3 hours again, collect the product II after calcining and be cooled to room temperature; Wash with water again to the pH value of solution be 7, then filter, collect filter residue dry, obtain silicon-dioxide; Wherein, the add-on of described sulphuric acid soln is that product I adds sulphuric acid soln described in 110ml described in every 100g;
The method that described water glass is prepared porous silica is: the pH value to 8.5 that regulates 0.05mol/L sodium silicate solution at 85 ℃～90 ℃, then in described sodium silicate solution, drip dehydrated alcohol, to reacting, no longer include Precipitation, filter, collect filter residue dry, obtain silicon-dioxide;
The method that described zeolite powder is prepared porous silica is: first zeolite raw ore is pulverized, cross 100 order molecular sieves, obtain zeolite powder, then described zeolite powder is added in the sulphuric acid soln of concentration 6%-10%, standing 3 hours, then filters, with distilled water, being washed till pH is again 7, then filter, collect filter residue dry, calcining at last 350 ℃-500 ℃.
Owing to adopting technique scheme, the beneficial effect that the present invention obtains is:
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of in dry powder emulsion paint coating, the dry powder emulsion paint coating that it makes not only can efficiently decompose the obnoxious flavoures such as airborne formaldehyde and toluene, improve IAQ (indoor air quality), can also replace traditional sterilant to play the effect of long-acting bactericidal: antibacterial effect reaches more than 98%; Daylight or light-illuminating are after 48 hours, and decomposing, purifying formaldehyde rate reaches more than 83%, and decomposing, purifying toluene rate reaches more than 49%; Meet the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
embodiment 1
In the 0.1mol/L zinc nitrate solution of 200mL, slowly add 30g porous silica, and then slowly add the urea soln of the 0.4mol/L of 100mL, and regulator solution pH is 8.5, at 70 ℃, constant temperature keeps 10 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 350 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the preparation method of silicon-dioxide is: get 200g diatom original soil, first wash diatom original soil with water, again the diatomite after washing is calcined 2 hours at 500 ℃, the product I of collecting after calcining is also cooled to room temperature, and then in described product I, adding 220mL concentration is 1.4% sulphuric acid soln, mixes, at 220 ℃, calcine 3 hours, collect the product II after calcining and be cooled to room temperature; Wash with water again to the pH value of solution be 7, then filter, collect filter residue dry, obtain silicon-dioxide;
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 98.7%, can decomposing, purifying formaldehyde rate reach 84.8%, decomposing, purifying toluene rate reaches 51.6%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
embodiment 2
In the 0.1mol/L zinc acetate solution of 200mL, slowly add 35g porous silica, and then slowly add the urea soln of the 0.4mol/L of 150mL, and regulator solution pH is 8.5, at 80 ℃, constant temperature keeps 9 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 450 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the preparation method of silicon-dioxide is: at 85 ℃, regulate the pH value to 8.5 of 0.05mol/L sodium silicate solution, then in described sodium silicate solution, drip dehydrated alcohol, to reacting, no longer include Precipitation, filter, collect filter residue dry, obtain silicon-dioxide.
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 98.3%, can decomposing, purifying formaldehyde rate reach 85.2%, decomposing, purifying toluene rate reaches 50.5%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
embodiment 3
In the 0.1mol/L solution of zinc sulfate of 200mL, slowly add 40g porous silica, and then slowly add the urea soln of the 0.4mol/L of 200mL, and regulator solution pH is 8.5, at 95 ℃, constant temperature keeps 8 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 550 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the preparation method of silicon-dioxide is: at 90 ℃, regulate the pH value to 8.5 of 0.05mol/L sodium silicate solution, then in described sodium silicate solution, drip dehydrated alcohol, to reacting, no longer include Precipitation, filter, collect filter residue dry, obtain silicon-dioxide.
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 99%, can decomposing, purifying formaldehyde rate reach 85.8%, decomposing, purifying toluene rate reaches 50.2%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
embodiment 4
In the 0.1mol/L zinc acetate of 200mL, slowly add 30g porous silica, and then slowly add 25% ammonia soln of 40mL, and regulator solution pH is 8.5, at 70 ℃, constant temperature keeps 10 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 350 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the preparation method of silicon-dioxide is: first 1000g zeolite raw ore is pulverized, crossed 100 order molecular sieves, obtain zeolite powder, then described zeolite powder is joined to 3000ml concentration and be in 6% sulphuric acid soln, standing 3 hours, then filter, collect filter residue I, by distilled water wash filter residue I, making its pH value is again 7, refilters, and collects filter residue II dry, finally, 350 ℃ of calcinings, obtain silicon-dioxide.
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 98.5%, can decomposing, purifying formaldehyde rate reach 83.8%, decomposing, purifying toluene rate reaches 50.6%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
embodiment 5
In the 0.1mol/L zinc sulfate of 200mL, slowly add 35g porous silica, and then slowly add 28% ammonia soln of 20mL, regulator solution pH is 8.5, at 80 ℃, constant temperature keeps 9 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 450 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the preparation method of silicon-dioxide is: first 1000g zeolite raw ore is pulverized, crossed 100 order molecular sieves, obtain zeolite powder, then described zeolite powder is joined to 3000ml concentration and be in 10% sulphuric acid soln, standing 3 hours, then filter, collect filter residue I, by distilled water wash filter residue I, making its pH value is again 7, refilters, and collects filter residue II dry, finally, 500 ℃ of calcinings, obtain silicon-dioxide.
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 98.2%, can decomposing, purifying formaldehyde rate reach 85.1%, decomposing, purifying toluene rate reaches 51.1%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
embodiment 6
In the 0.1mol/L zinc nitrate solution of 200mL, slowly add 40g porous silica, and then slowly add 28% ammonia soln of 20mL, and regulator solution pH is 8.5, at 95 ℃, constant temperature keeps 8 hours, filter, finally the filter residue that filters gained is dried to 8 hours at 95 ℃, then calcines 4 hours for 550 ℃, obtain silicon-dioxide and zinc oxide composite.
Wherein, the raw material of silicon-dioxide is from synthetic silica.
The silicon-dioxide that the present invention is made and zinc oxide composite are for the preparation of dry powder emulsion paint coating, and by every square metre, with 100g dry emulsion powder coating, add 150g water and stir, be coated on indoor wall, film-forming, detect, discovery is without under light conditions, the adsorbable indoor formaldehyde of this coating, toluene and peculiar smell; There are being daylight or light-illuminating after 48 hours, antibacterial effect to bacterium common in room air reaches 98.5%, can decomposing, purifying formaldehyde rate reach 84.6%, decomposing, purifying toluene rate reaches 50.7%, meets the requirement of the building material industry standard JC/T 1074-2008 < < of People's Republic of China (PRC) function of purifying indoor air coating material purifying property > >.
Claims (6)
1. a preparation method for silicon-dioxide and zinc oxide composite, is characterized in that comprising the following steps:
A, to containing 0.1mol/LZn
2+salts solution in slowly add porous silica, and then slowly add precipitation agent; Wherein, the add-on of described porous silica is that salts solution adds porous silica described in 10g described in every 100mL; Described precipitation agent is a kind of in the ammonia soln of 0.4mol/L urea soln or 25%～28%; The volume ratio of described salts solution and described urea is 1:0.5～1; The volume ratio of described salts solution and described ammoniacal liquor is 1:0.1～0.3;
B, regulate the pH value to 8.5 of mixing solutions, then isothermal reaction 8 hours～10 hours at 70 ℃～95 ℃;
C, after reaction described in step B finishes, product that described reaction is obtained filters, and collects filter residue, by described filter residue at 95 ℃ dry 8 hours, then at 350 ℃～550 ℃, calcines 4 hours, obtains this silicon-dioxide and zinc oxide composite.
2. the preparation method of a kind of silicon-dioxide according to claim 1 and zinc oxide composite, is characterized in that described salts solution is zinc nitrate solution, zinc acetate solution, a kind of in three kinds of solution of solution of zinc sulfate.
3. the preparation method of a kind of silicon-dioxide according to claim 1 and 2 and zinc oxide composite, it is characterized in that the raw materials of the porous silica described in step B is from synthetic silica, water glass, diatomite, a kind of in four kinds of materials of zeolite powder.
4. the preparation method of a kind of silicon-dioxide according to claim 3 and zinc oxide composite, it is characterized in that described diatomite prepares the method for porous silica and be: first wash diatom original soil with water, again the diatomite after washing is calcined 2 hours at 500 ℃, collect the product I after calcining and be cooled to room temperature, then in described product I, adding concentration is 1.4% sulphuric acid soln, mix, then calcine 3 hours at 220 ℃, collect the product II after calcining and be cooled to room temperature; Wash with water again to the pH value of solution be 7, then filter, collect filter residue dry, obtain silicon-dioxide; Wherein, the add-on of described sulphuric acid soln is that product I adds sulphuric acid soln described in 110ml described in every 100g.
5. the preparation method of a kind of silicon-dioxide according to claim 3 and zinc oxide composite, it is characterized in that described water glass prepares the method for porous silica and be: the pH value to 8.5 that regulates 0.05mol/L sodium silicate solution at 85 ℃～90 ℃, then in described sodium silicate solution, drip dehydrated alcohol, to reacting, no longer include Precipitation, filter, collect filter residue dry, obtain silicon-dioxide.
6. the preparation method of a kind of silicon-dioxide according to claim 3 and zinc oxide composite, it is characterized in that described zeolite powder prepares the method for porous silica and be: first zeolite raw ore is pulverized, cross 100 order molecular sieves, obtain zeolite powder, then described zeolite powder is joined to concentration and be in 6%～10% sulphuric acid soln, standing 3 hours, then filter, collect filter residue I, by distilled water wash filter residue I, making its pH value is again 7, refilters, and collects filter residue II dry, finally, 350 ℃～500 ℃ calcinings, obtain silicon-dioxide.
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| CN108976477A (en) * | 2018-08-15 | 2018-12-11 | 合肥卓汇新材料科技有限公司 | A kind of covering material for applying the fluorescent powder in luminescent plastic |
| CN111534176A (en) * | 2020-06-02 | 2020-08-14 | 王瑞勤 | Emulsion paint capable of efficiently decomposing formaldehyde and preparation method thereof |
| CN112657463A (en) * | 2020-11-13 | 2021-04-16 | 深圳市净万嘉环保科技有限公司 | Manganese-zinc-carbon composite material and preparation method thereof |
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| CN105536662A (en) * | 2015-12-30 | 2016-05-04 | 西安科技大学 | Preparation method of microcapsules |
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| CN108976477B (en) * | 2018-08-15 | 2020-07-31 | 赣州中蓝稀土新材料科技有限公司 | Fluorescent powder coating material applied to luminous plastic |
| CN111534176A (en) * | 2020-06-02 | 2020-08-14 | 王瑞勤 | Emulsion paint capable of efficiently decomposing formaldehyde and preparation method thereof |
| CN112657463A (en) * | 2020-11-13 | 2021-04-16 | 深圳市净万嘉环保科技有限公司 | Manganese-zinc-carbon composite material and preparation method thereof |
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Application publication date: 20140903 |