CN109943112A - A kind of environmental photocatalysis fireproof coating and preparation method thereof for air cleaning - Google Patents
A kind of environmental photocatalysis fireproof coating and preparation method thereof for air cleaning Download PDFInfo
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Abstract
The environmental photocatalysis fireproof coating and preparation method thereof that the invention discloses a kind of for air cleaning, belongs to field of functional coatings.The ecotype photocatalysis fireproof coating includes base-material, catalyst, carbon forming agent, foaming agent, fire-retardant filler, photocatalysis pigment, inorganic solvent, dispersing agent, drier, drying aid and nanometer mother liquor.The present invention solves the prior art using metallic element and rare earth element to TiO2It is modified and there are problems that at high cost and complex process, and paint filler the shortcomings that having a single function, it not only assigns fireproof coating completely new function, has opened up the approach of new function coating, and photocatalysis fireproof coating production cost 30% or so is reduced, improve its market competitiveness.Using steel slag to TiO2It is modified as photocatalysis pigment, red mud micro mist as the environmental photocatalysis fireproof coating of fire-retardant filler preparation, has not only opened up the new way that metallurgical solid waste utilizes, but also realize the value added applications of metallurgical solid waste.
Description
Technical field
The invention belongs to field of functional coatings, and in particular to it is a kind of using Bayer process red mud micro mist, red mud from sintering process micro mist,
Mixed combining method red mud micro mist is as fire-retardant filler, the modified TiO of steel slag2As photocatalysis pigment, preparation can comprehensively utilize metallurgical solid waste
A kind of environmental photocatalysis fireproof coating for air cleaning.
Background technique
Steel slag is the solid waste generated in steelmaking process, accounts for about the 15%~20% of steel-making yield.Steel slag mainly by
The oxide composition of calcium, iron, silicon, magnesium and a small amount of aluminium, manganese, phosphorus etc., i.e. SiO2、Fe2O3、Al2O3、ZnO、CaO、MgO、P2O5、
MnO、SO3Deng also containing a small amount of free calcium oxide and metallic iron etc..Red mud is the waste residue generated in aluminum oxide production process,
Its Main Components is SiO2、CaO、Fe2O3、Al2O3、Na2O、TiO2、K2O etc., additionally containing alkali composition and the micro non-ferrous metal of burning
Deng.The stockpiling of a lot of steel slag and red mud at present does not only take up valuable soil, but also can cause dirt to ambient enviroment and underground water
Dye.Therefore, how on a large scale, efficiently utilize steel slag and red mud, realize environment Reduction of Students' Study Load, reducing enterprise cost, be one there is an urgent need to
It solves the problems, such as.
Metallic element and rare earth element are generallyd use in coating industry to the inorganic pigment TiO of better heat stability2It carries out
It is modified, improve TiO to reach2The purpose that quantum efficiency is very low, photocatalytic activity is low, visible light utilization efficiency is low realizes that raising changes
Property TiO2To the absorbability of visible light.Currently with metallic element and rare earth element to TiO2Be modified there are at high cost and
The problem of complex process, if using the metallic element contained in steel slag to TiO2It is modified and realizes photocatalysis under visible light source
Modified TiO can be not only greatly reduced in the purpose of degradation of formaldehyde2Cost, and the utilization added value of steel slag can be improved.Together
Shi Liyong contains a large amount of A12O3Red mud micro mist as paint filler, A1 in red mud micro mist under alkaline condition2O3 can be with steel
ZnO, MgO, P that slag contains2O5Deng generation flame retardant synergism, to improve the flame retardant property of coating.Therefore, steel slag pair is utilized
TiO2It is modified as photocatalysis pigment, red mud micro mist as fire-retardant filler, environmental light of the preparation for air cleaning is urged
Change fireproof coating, the high added value for not only realizing metallurgical solid waste recycles, and promotes smelter synergy, and opened up smelting
Golden solid waste utilizes new way, reduces coatings enterprises cost.
Summary of the invention
In order to solve using metallic element and rare earth element to TiO2It is modified and is asked there are at high cost and complex process
The shortcomings that topic and paint filler have a single function, the present invention is using steel slag to TiO2It is modified as photocatalysis pigment, red mud
Micro mist prepares ecological paint as fire-retardant filler, and to mixing speed, mixing time, whipping temp, heating rate, calcining
Temperature etc. is controlled, and to realize that the high added value of metallurgical solid waste recycles, obtaining has photocatalysis performance and fire line
The multifunctional coating of energy.
In order to solve the above technical problems, the present invention is achieved by the following technical programs.
The present invention provides a kind of environmental photocatalysis fireproof coatings for air cleaning, and the coating is by weight percentage
Raw material is as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is Bayer process red mud micro mist, in red mud from sintering process micro mist, mixed combining method red mud micro mist
It is one or more；The photocatalysis pigment is the modified TiO of steel slag2；The inorganic solvent is water；The dispersing agent is six inclined phosphorus
Sour sodium；The drier is manganese dioxide；The drying aid is zinc powder；The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
Invention also provides the above-mentioned environmental photocatalysis fireproof coating preparation methods for air cleaning, specific to wrap
Include following steps:
Matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force 500r/min~
Homogeneous transparent solution is obtained after stirring 30min~45min under the conditions of 800r/min, then will be dissolved with the dilute hydrochloric acid solution of slag micro powder
It is slowly added to above-mentioned solution under the conditions of 800r/min~1000r/min, is stirred under the conditions of 800r/min~1000r/min
Lyosol is obtained after 45min~60min, and ageing forms xerogel indoors, and xerogel is then put into medium temperature experimental furnace
In with 1.5 DEG C/min~2.5 DEG C/min be raised to 600 DEG C~800 DEG C, constant temperature 2h, it is modified to obtain steel slag for cooled to room temperature
TiO2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 40%~60%, and the slag micro powder is desulfurizing iron tail
Slag micro mist, casting residue micro mist, converter hot splashing slag micro mist, converter drum slag micro mist, electric furnace hot splashing slag micro mist, electric furnace roller slag are micro-
Powder；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly after dispersing agent and inorganic solvent being stirred 5min~10min under the conditions of 1000r/min~1500r/min,
It sequentially adds after base-material and fire-retardant filler stir 5min~10min under the conditions of 1000r/min~1500r/min, light is added and urges
After change pigment stirs 5min~10min under the conditions of 1000r/min~1500r/min, catalyst, carbon forming agent and hair are sequentially added
After infusion stirs 10min~30min under the conditions of 800r/min~1000r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally by photocatalysis prevent fires white slurry pour into paint mixing cylinder stirred under the conditions of 500r/min~800r/min 5min~
After 10min, sequentially add drier, drying aid and nanometer mother liquor stirred under the conditions of 500r/min~800r/min 20min~
After 30min, environmental photocatalysis fireproof coating is obtained.
The principles of science of the invention:
On the one hand, using dilute hydrochloric acid solution to the Fe contained in steel slag2O3、Al2O3、ZnO、MgO、P2O5, MnO carry out part
To TiO after dissolution2It is modified, realizes the modified TiO of steel slag2The purpose of formaldehyde degradation by photocatalytic oxidation process under visible light source.
On the other hand, the fire retardant substance Al that a large amount of fusing points are high is contained in red mud micro mist2O3, red mud micro mist under alkaline condition
Middle Al2O3ZnO, MgO, the P that can contain with steel slag2O5Deng generation flame retardant synergism, flame retardant effect is improved.
Compared with prior art, the invention has the following advantages:
1, the present invention solves the prior art using metallic element and rare earth element to TiO2It is modified that there are at high cost
And the problem of complex process and paint filler the shortcomings that having a single function, not only assign fireproof coating completely new function, developing
The approach of new function coating, and photocatalysis fireproof coating production cost 30% or so is reduced, improve its market competition
Power.
2, the present invention is using steel slag to TiO2It is modified as photocatalysis pigment, red mud micro mist as fire-retardant filler preparation
Environmental photocatalysis fireproof coating has not only opened up the new way that metallurgical solid waste utilizes, but also the height for realizing metallurgical solid waste is attached
Value added application achievees the purpose that " with synergy of giving up ".
3, a kind of environmental photocatalysis fireproof coating and preparation method thereof for air cleaning of the present invention meets associated section
It can environmentally friendly, circular economy policy requirements.
Detailed description of the invention
Fig. 1 is indoor environment schematic diagram under HJC-1 type environmental test chamber simulated visible light source；
Fig. 2 is that fire resistance tests schematic diagram；
In figure: 1, Temperature Humidity Sensor；2, thief hatch；3, fan；4, visible light source；5, alcohol blast burner；6, supporter；7,
Iron stand with iron clamp；8, test board；A, formaldehyde gas；B, environmental photocatalysis fireproof coating.
Specific embodiment
The present invention is described in detail below in conjunction with specific embodiment, but the present invention is not limited to following embodiments.
Embodiment 1
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is Bayer process red mud micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 600r/min item
Obtain homogeneous transparent solution after stirring 40min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 1000r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 45min under the conditions of 900r/min, and ageing indoors forms dry coagulate
Then xerogel is put into medium temperature experimental furnace and is raised to 600 DEG C with 2.0 DEG C/min by glue, constant temperature 2h, cooled to room temperature obtains
To the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 50%, and the slag micro powder is de- for molten iron
Sulphur tailings micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 8min under the conditions of 1100r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 6min under the conditions of 1400r/min, after addition photocatalysis pigment stirs 10min under the conditions of 1200r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 15min under the conditions of 900r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 7min under the conditions of 500r/min, sequentially adds and urges
After dry agent, drying aid and nanometer mother liquor stir 30min under the conditions of 800r/min, environmental photocatalysis fireproof coating is obtained.
Embodiment 2
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is red mud from sintering process micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 700r/min item
Obtain homogeneous transparent solution after stirring 30min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 800r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 55min under the conditions of 1000r/min, and ageing indoors is formed and done
Then xerogel is put into medium temperature experimental furnace and is raised to 700 DEG C, constant temperature 2h with 2.5 DEG C/min by gel, cooled to room temperature,
Obtain the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 60%, and the slag micro powder is more than casting
Slag micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 7min under the conditions of 1500r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 9min under the conditions of 1000r/min, after addition photocatalysis pigment stirs 5min under the conditions of 1300r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 25min under the conditions of 800r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 8min under the conditions of 800r/min, sequentially adds and urges
After dry agent, drying aid and nanometer mother liquor stir 20min under the conditions of 600r/min, environmental photocatalysis fireproof coating is obtained.
Embodiment 3
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is mixed combining method red mud micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 800r/min item
Obtain homogeneous transparent solution after stirring 45min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 900r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 60min under the conditions of 800r/min, and ageing indoors forms dry coagulate
Then xerogel is put into medium temperature experimental furnace and is raised to 800 DEG C with 1.5 DEG C/min by glue, constant temperature 2h, cooled to room temperature obtains
To the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 45%, and the slag micro powder is converter heat
Sprinkle slag micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 5min under the conditions of 1200r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 7min under the conditions of 1200r/min, after addition photocatalysis pigment stirs 8min under the conditions of 1100r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 30min under the conditions of 1000r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 10min under the conditions of 600r/min, is sequentially added
After drier, drying aid and nanometer mother liquor stir 25min under the conditions of 500r/min, environmental photocatalysis fireproof coating is obtained.
Embodiment 4
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is mixed combining method red mud micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 500r/min item
Obtain homogeneous transparent solution after stirring 35min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 900r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 50min under the conditions of 1000r/min, and ageing indoors is formed and done
Then xerogel is put into medium temperature experimental furnace and is raised to 600 DEG C, constant temperature 2h with 2.5 DEG C/min by gel, cooled to room temperature,
Obtain the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 55%, and the slag micro powder is converter
Roller slag micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 10min under the conditions of 1400r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 5min under the conditions of 1300r/min, after addition photocatalysis pigment stirs 7min under the conditions of 1500r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 10min under the conditions of 900r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 9min under the conditions of 700r/min, sequentially adds and urges
After dry agent, drying aid and nanometer mother liquor stir 30min under the conditions of 700r/min, environmental photocatalysis fireproof coating is obtained.
Embodiment 5
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is red mud from sintering process micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 700r/min item
Obtain homogeneous transparent solution after stirring 45min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 1000r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 55min under the conditions of 800r/min, and ageing indoors forms dry coagulate
Then xerogel is put into medium temperature experimental furnace and is raised to 700 DEG C with 1.5 DEG C/min by glue, constant temperature 2h, cooled to room temperature obtains
To the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 40%, the electric furnace hot splashing slag micro mist；
The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 9min under the conditions of 1300r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 10min under the conditions of 1500r/min, after addition photocatalysis pigment stirs 6min under the conditions of 1000r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 20min under the conditions of 1000r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 5min under the conditions of 600r/min, sequentially adds and urges
After dry agent, drying aid and nanometer mother liquor stir 20min under the conditions of 800r/min, environmental photocatalysis fireproof coating is obtained.
Embodiment 6
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is Bayer process red mud micro mist；The photocatalysis pigment is the modified TiO of steel slag2；Institute
Stating inorganic solvent is water；The dispersing agent is calgon；The drier is manganese dioxide；The drying aid is zinc powder；
The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 600r/min item
Obtain homogeneous transparent solution after stirring 35min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 800r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 50min under the conditions of 1000r/min, and ageing indoors is formed and done
Then xerogel is put into medium temperature experimental furnace and is raised to 800 DEG C, constant temperature 2h with 2.0 DEG C/min by gel, cooled to room temperature,
Obtain the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 40%, and the slag micro powder is electric furnace
Roller slag micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly dispersing agent and inorganic solvent are stirred into 6min under the conditions of 1000r/min after, sequentially add base-material with it is fire-retardant
After filler stirs 8min under the conditions of 1100r/min, after addition photocatalysis pigment stirs 9min under the conditions of 1400r/min, according to
After secondary addition catalyst, carbon forming agent and foaming agent stir 30min under the conditions of 800r/min, the white slurry of photocatalysis fire prevention is obtained.
Finally photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 6min under the conditions of 700r/min, sequentially adds and urges
After dry agent, drying aid and nanometer mother liquor stir 25min under the conditions of 500r/min, environmental photocatalysis fireproof coating is obtained.
Comparative example 1
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The photocatalysis pigment is the modified TiO of steel slag2；The inorganic solvent is water；The dispersing agent is six
Sodium metaphosphate；The drier is manganese dioxide；The drying aid is zinc powder；The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 600r/min item
Obtain homogeneous transparent solution after stirring 35min under part, then by dissolved with the dilute hydrochloric acid solution of slag micro powder under the conditions of 800r/min
It is slowly added to above-mentioned solution, obtains lyosol after stirring 50min under the conditions of 1000r/min, and ageing indoors is formed and done
Then xerogel is put into medium temperature experimental furnace and is raised to 800 DEG C, constant temperature 2h with 2.0 DEG C/min by gel, cooled to room temperature,
Obtain the modified TiO of steel slag2.The modified TiO of the steel slag2Middle slag micro powder mass percent is 40%, and the slag micro powder is electric furnace
Roller slag micro mist；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
Secondly after dispersing agent and inorganic solvent being stirred 6min under the conditions of 1000r/min, base-material is added in 1100r/min
Under the conditions of stir 8min after, be added after photocatalysis pigment stirs 9min under the conditions of 1400r/min, sequentially add catalyst, at
After charcoal agent and foaming agent stir 30min under the conditions of 800r/min, the white slurry of photocatalysis is obtained.
Finally the white slurry of photocatalysis is poured into paint mixing cylinder after stirring 6min under the conditions of 700r/min, sequentially add urge it is dry
After agent, drying aid and nanometer mother liquor stir 25min under the conditions of 500r/min, environmental light catalyzed coating is obtained.
Comparative example 2
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；It is described
Foaming agent is melamine；The fire-retardant filler is Bayer process red mud micro mist；The inorganic solvent is water；The dispersing agent is six
Sodium metaphosphate；The drier is manganese dioxide；The drying aid is zinc powder；The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
After dispersing agent and inorganic solvent are stirred 6min under the conditions of 1000r/min first, sequentially add base-material with it is fire-retardant
After filler stirs 8min under the conditions of 1100r/min, catalyst, carbon forming agent and foaming agent are sequentially added under the conditions of 800r/min
After stirring 30min, white slurry of preventing fires is obtained.
Secondly the white slurry that will prevent fires pours into paint mixing cylinder stir 6min under the conditions of 700r/min after, sequentially add drier,
After drying aid and nanometer mother liquor stir 25min under the conditions of 500r/min, environmental fireproof coating is obtained.
Examples 1 to 6 and comparative example 1~2 are prepared, performance testing process is as follows:
Indoor environment (as shown in Figure 1) under the HJC-1 type environmental test chamber simulated visible light source generallyd use using European Union.
Using Temperature Humidity Sensor 1, at 23 ± 0.5 DEG C, humidity is arranged 45 ± 3% temperature setting.2.5 μ L concentration be 37%~
40% formaldehyde is analyzed pure solution and is added dropwise on culture dish, is put into environmental test chamber, it is made sufficiently to volatilize in environmental test chamber,
Make the formaldehyde gas a concentration 1mg/m in entire environmental test chamber using fan 33.By the life of theoretical coating thickness (200 μm)
State type photocatalysis fireproof coating b loads to 0.1m2Test board on, excited using visible light source 4, make its generate catalysis make
With.Using acetylacetone,2,4-pentanedione spectrophotometry (GB/T15516-1995), using thief hatch 2, select to sample in the cabin 10L when 240min
Gas, detect environmental test chamber in formaldehyde gas concentration variation, so as to calculate environmental photocatalysis fireproof coating
The efficiency of formaldehyde degradation by photocatalytic oxidation process.
Using vertical combustion (as shown in Figure 2).Environmental photocatalysis fireproof coating painting b is overlayed on into 8 side of test board, is put
It sets on the iron stand 7 with iron clamp, coats the test board side of environmental photocatalysis fireproof coating towards alcohol blast burner 5, and
It is 7cm or so with the vertical range of alcohol blast burner mouth, when flame temperature reaches 1000 DEG C or so, starts timing to detecting end
Point.Fiery face charing is carried on the back when detection, when test board burns, and crack occurs, it is determined as resistance to combustion time (min) terminal.
The environmental photocatalysis Properties of Fire-Proofing Coatings test result of table 1
| Serial number | Surface drying time/h | Do solid work the time/h | Resistance to combustion time/min | Formaldehyde degradation by photocatalytic oxidation process efficiency/% |
| Embodiment 1 | 3 | 16 | 56 | 55.8 |
| Embodiment 2 | 4 | 26 | 72 | 51.2 |
| Embodiment 3 | 2 | 12 | 65 | 45.3 |
| Embodiment 4 | 4 | 23 | 77 | 46.1 |
| Embodiment 5 | 2 | 11 | 61 | 49.8 |
| Embodiment 6 | 4 | 25 | 53 | 56.5 |
| Comparative example 1 | 7 | 29 | 14 | 53.4 |
| Comparative example 2 | 9 | 34 | 48 | 5.6 |
Claims (3)
1. a kind of environmental photocatalysis fireproof coating for air cleaning, which is characterized in that the coating is former by weight percentage
Expect as follows:
The base-material is aluminium dihydrogen phosphate；The catalyst is ammonium polyphosphate；The carbon forming agent is dipentaerythritol；The foaming
Agent is melamine；The fire-retardant filler is Bayer process red mud micro mist, red mud from sintering process micro mist, one in mixed combining method red mud micro mist
Kind is a variety of；The photocatalysis pigment is the modified TiO of steel slag2；The inorganic solvent is water；The dispersing agent is hexa metaphosphoric acid
Sodium；The drier is manganese dioxide；The drying aid is zinc powder；The nanometer mother liquor is Nano-meter SiO_22Mother liquor.
2. being used for the environmental photocatalysis fireproof coating of air cleaning as described in claim 1, which is characterized in that the photocatalysis
The modified TiO of pigment-steel slag2Preparation the following steps are included:
It is matched first by butyl titanate and dehydrated alcohol volume ratio 1: 3, with constant temperature blender with magnetic force in 500r/min~800r/
Homogeneous transparent solution is obtained after stirring 30min~45min under the conditions of min, then will be existed dissolved with the dilute hydrochloric acid solution of slag micro powder
It is slowly added to above-mentioned solution under the conditions of 800r/min~1000r/min, is stirred under the conditions of 800r/min~1000r/min
Lyosol is obtained after 45min~60min, and ageing forms xerogel indoors, and xerogel is then put into medium temperature experimental furnace
In with 1.5 DEG C/min~2.5 DEG C/min be raised to 600 DEG C~800 DEG C, constant temperature 2h, it is modified to obtain steel slag for cooled to room temperature
TiO2；
The modified TiO of the steel slag2Middle slag micro powder mass percent is 40%~60%, and the slag micro powder is desulfurizing iron tail
Slag micro mist, casting residue micro mist, converter hot splashing slag micro mist, converter drum slag micro mist, electric furnace hot splashing slag micro mist, electric furnace roller slag micro mist
It is one or more；The butyl titanate, dehydrated alcohol and hydrochloric acid are that analysis is pure.
3. a kind of preparation method for the environmental photocatalysis fireproof coating of air cleaning as claimed in claim 1 or 2, special
Sign is to include the following steps:
After dispersing agent and inorganic solvent are stirred 5min~10min under the conditions of 1000r/min~1500r/min, sequentially add
After base-material and fire-retardant filler stir 5min~10min under the conditions of 1000r/min~1500r/min, photocatalysis pigment is added and exists
After stirring 5min~10min under the conditions of 1000r/min~1500r/min, sequentially adds catalyst, carbon forming agent and foaming agent and exist
After stirring 10min~30min under the conditions of 800r/min~1000r/min, the white slurry of photocatalysis fire prevention is obtained；
Photocatalysis is prevented fires after white slurry pours into paint mixing cylinder and to stir 5min~10min under the conditions of 500r/min~800r/min,
It sequentially adds after drier, drying aid and nanometer mother liquor stir 20min~30min under the conditions of 500r/min~800r/min,
Obtain environmental photocatalysis fireproof coating.
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