CN110078456A - It is a kind of with absorption, the plaster board of photocatalysis performance and its preparation method and application - Google Patents
It is a kind of with absorption, the plaster board of photocatalysis performance and its preparation method and application Download PDFInfo
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- CN110078456A CN110078456A CN201910410735.4A CN201910410735A CN110078456A CN 110078456 A CN110078456 A CN 110078456A CN 201910410735 A CN201910410735 A CN 201910410735A CN 110078456 A CN110078456 A CN 110078456A
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- absorption
- slag
- high titanium
- titanium slag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4643—Silicates other than zircon
- C04B14/4675—Silicates other than zircon from slags
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0081—Uses not provided for elsewhere in C04B2111/00 as catalysts or catalyst carriers
- C04B2111/00827—Photocatalysts
Abstract
The invention discloses a kind of with absorption, the plaster board of photocatalysis performance and its preparation method and application, which is mainly made of following weight percent raw material: high titanium slag base slag wool fiber 3%~10%, building gypsum plaster 65%~68%, water 22%~32%.A kind of high titanium slag base mineral wool gypsum fiber plate material prepared by the present invention has the double effects of absorption with formaldehyde degradation by photocatalytic oxidation process, increase the functionality of gypsum sheet material material, it can adsorb, Photocatalytic Degradation of Indoor Formaldehyde gas, it is effectively improved indoor air quality, the competitiveness in product market is improved, good economic benefit can be brought；Method and process provided by the present invention is simple, at low cost, low energy consumption simultaneously, it can turn waste into wealth, it is expected to realize the large scale preparation of high titanium slag base mineral wool plaster board, meets the needs of industrialized production, meet the development trend of national green ecological architectural material.
Description
Technical field
The invention belongs to multi-use architecture materials and energy-saving building technology field, more particularly to one kind there is absorption, light to urge
Change the high titanium slag base mineral wool plaster board and its preparation method and application of performance.
Background technique
Recently as the continuous propulsion of urban modernization, house stands in great numbers with public place, the use of decoration material
Cumulative year after year.However a variety of toxic and harmful gas can be released in these building materials and furniture, such as formaldehyde, ammonia, benzene and benzene homologues
Equal escaping gas, room air pollution are brought to the teeth of the storm.Based on masses' worry more surging to room air pollution,
The research and development of New Building Materials with environmental pollution improvement's function have become the hot spot of a large amount of focus of attention both at home and abroad.
Formaldehyde is the generally acknowledged a kind of carcinogenic substance of the World Health Organization, purifying formaldehyde to Guan Chong as main indoor pollutant
It wants.Domestic and international main purification style at present are as follows: physical absorption, plant purification, chemical absorbing, catalysis oxidation and photocatalysis etc..Its
Middle photocatalysis technology is because it can occur sustained response at normal temperatures and pressures, and photochemical catalyst does not generate loss, final product when reaction
For CO2And H2O, reaction condition is mild, and does not generate secondary pollution, easy to operate, is widely studied and applies in recent years.Two
Titanium oxide applies hot spot as photocatalysis field with its good chemical stabilization and catalytic performance.
Now, China Steel company smelts iron workshop section, the annual high titanium slag (TiO for generating about 3,600,000 tons2Content >=22%),
By-product of the high titanium slag as metallurgical industry has great potential value.Have every year a large amount of high titanium slag be not used or
It is to carry out rough utilization as just additives for building materials, causes the serious wasting of resources and environmental pollution, it would be highly desirable to exploitation section
Learn reasonable high titanium slag resource utilization new way.Domestic and international a large number of researchers are directed generally to the recycling from high titanium slag and extract titanium
A large amount of spent acid salkali waste etc. are generated while element, this method low efficiency and extraction, cause secondary pollution.
Summary of the invention
Goal of the invention: problem of the existing technology: 1, current indoor decoration plasterboard mainly has decoration function, together
When gypsum sheet material surface there is certain suction-operated to indoor formaldehyde gas, but after adsorption saturation, there are adsorbed gas
Body is desorbed again and is unable to reach the purpose that the formaldehyde gas of the closed interior space is fully and completely purified to removing；2, right at present
The extensive and land occupation stockpiling of high titanium slag, cause the wasting of resources and secondary pollution of valuable titanium resource in slag.The present invention provides
A kind of plaster board with absorption, photocatalysis performance has the association of absorption to indoor formaldehyde gas, photocatalytic degradation
With purification removal effect, it is effectively improved indoor air quality, realizes high titanium slag entirety resource utilization；Solving in high titanium slag has
The problem of environmental pollution of the waste of valence titanium resource or abandoned piles land occupation, has the unexistent effect of conventional gypsum plate, alleviates mesh
The problem of environmental pollution of preceding fitment material for family formaldehyde.
The preparation method and application with absorption, the plaster board of photocatalysis performance that the present invention also provides a kind of.
Technical solution: to achieve the goals above, a kind of gypsum with absorption, photocatalysis performance of the present invention is fine
Tie up plate, which is characterized in that be mainly made of following weight percent raw material:
High titanium slag base slag wool fiber 3%~10%
Building gypsum plaster 65%~68%
Water 22%~32%.
Wherein, the high titanium slag base slag wool fiber is with the high titanium slag of molten state through cotton-wool made of compressed air spraying
Shape fiber, TiO in the high titanium slag of the molten state2Content (being mass fraction) is 22%~25%.High titanium slag of the invention is
Refer to TiO2The titanium-containing blast furnace slag of content >=22%, advantage are exactly Ti content height, and occurrence form titanium is with Perovskite Phase (CaTiO3)
In the presence of with good photocatalysis characteristic.
Wherein, the high titanium slag base slag wool fiber average diameter is 1.30~3.60 μm, 35~45mm of average length.
Preferably, the building gypsum plaster is alpha semi-hydrated gypsum powder (high strength gypsum).
Wherein, the water is tap water.
Preparation method of the present invention with absorption, the plaster board of photocatalysis performance, includes the following steps:
(1) high titanium slag base slag wool fiber is placed in supersonic cleaning machine and is cleaned by ultrasonic, remove slagging-off ball, and clean, dry；
(2) by clean, drying after high titanium slag base slag wool fiber mixed with building gypsum plaster, stir evenly be made it is dry-mixed
Close material；
(3) it adds water in dry mixture, stirs evenly and slurry is made；
(4) slurry in step (3) is poured into mold, makes the wet base of plate；
(5) wet base is done through room temperature sky, it is dry, form the plaster board with absorption, photocatalysis performance.
Preferably, step (1) ultrasonic 1~2h, the gravity that is subject to when being moved in water according to slag ball and fiber and
The different principle of resistance removes the slag ball on mineral wool surface.
Preferably, step (5) the wet base after room temperature sky is dry for 24 hours, dries 2~3h at 110 DEG C.
The plaster board with absorption, photocatalysis performance of the present invention is built in preparation and production green ecological environmental protection
Build the application in material.
Wherein, the green ecological environmental-friendly construction material be can adsorb, Photocatalytic Degradation of Indoor Formaldehyde gas, effectively change
The construction material of kind indoor air quality.
The present invention is using high titanium slag base slag wool fiber, building gypsum plaster, water as raw material；It is intended to turn waste into wealth high titanium slag
Meanwhile Ti content therein being made full use of to carry out photocatalytic degradation to indoor formaldehyde.High titanium slag base slag wool fiber is will to melt
The high titanium slag of state is through flocculence fiber made of compressed air spraying, and wherein titanium is with Perovskite Phase (CaTiO3) exist, Yin Qite
Different fibre structure and good absorption property and light, insulation, good chemical stability can be used as a kind of excellent
Photochemical catalyst.
The present invention mixes high titanium slag base mineral wool with gypsum, carries out a large amount of experimental study, prepare have both absorption with
The high titanium slag base mineral wool gypsum fiber plate material of photocatalysis performance is, it can be achieved that waste utilization and effective purifying formaldehyde, have very
Good commercial application prospect；At home and abroad there is not been reported for similar approach, and a kind of first public high titanium slag base mineral wool with
The completely new plaster board with absorption, photocatalysis performance of gypsum mixing.
The principles of science of the invention:
Formaldehyde adsorption mechanism: under non-illuminated conditions, high titanium slag base mineral wool plaster board formaldehyde adsorption and pseudo-first-order
The fitting of kinetics equation height, therefore adsorption process is simple physical absorption, relies primarily on formaldehyde molecule and plaster board
The Van der Waals force generated between surface；Formaldehyde molecule is influenced by Van der Waals force, is adsorbed onto gypsum fiber plate surface, to reach
The purpose of formaldehyde adsorption.
Formaldehyde degradation by photocatalytic oxidation process mechanism: containing Perovskite Phase in high titanium slag base slag wool fiber, when reception ultraviolet light
When, luminous energy can effectively promote the Perovskite Phase on high titanium slag base mineral wool surface to excite a large amount of electron-hole pair (e of generation-, h+), with H2O reaction generates OH, and OH can be generated by the oxidation of formaldehyde for being adsorbed on high titanium slag base mineral wool surface at CHO
CHO further react and generate intermediate product HCOOH, HCOOH is finally oxidized to the CO of nonhazardous2And H2O, and do not generate two
Secondary pollution.The reaction step of the process may be summarized to be:
CaTiO3+hv→e-+h+
h++H2O→·OH+H+
HCHO+·OH→·CHO+H2O
·CHO+·OH→HCOOH
Wherein e-For conduction band electron, h+For valence band hole.
Reactant is formalin in above-mentioned reaction step, the H in solution2O decomposites H+Be conducive to the generation of OH.
Raw material building gypsum plaster in the present invention is that alpha semi-hydrated gypsum powder (high strength gypsum powder) is commercially available.
Mineral wool is with melted gangue (blast furnace slag, Copper Slag, aluminium ore slag etc.) for primary raw material, using compressed air or height
Press steam as blowing media, by slag be blown for staple shape inorfil (bibliography: 1. blast furnace slag mineral wool technique and
Its products application, author: hair is gorgeous etc., Shanghai Metals, the 2nd phase of volume 36 in March, 2014；2. injection parameters are to mineral wool
The influence of quality, author: Zhang Liangjin etc., material and metallurgical journal, the 1st phase of volume 15 in March, 2016).High titanium in the present invention
The preparation method of slag base slag wool fiber is referred to using mineral wool preparation method in above-mentioned document, can also be using in the prior art
Other mineral wools be blown preparation method, be a difference in that with its TiO of melted gangue2The titaniferous blast furnace that content is 22%~25%
Slag is raw material, i.e. high titanium slag, obtains high titanium slag base slag wool fiber through flocculence fiber made of compressed air spraying.
The utility model has the advantages that compared with prior art, the present invention has the advantage that
1. the present invention prepares a kind of gypsum fiber plate material with absorption, photocatalysis performance, preparation process it is simple and
It is pollution-free, and the recycling of waste resource is realized, fibre board material formaldehyde adsorption efficiency is more than 25%, while can will be adsorbed on
The formaldehyde gas of plate surface is decomposed into CO through photocatalysis2And H2O (wherein photocatalytic degradation purifies removal efficiency >=7%),
It realizes that the thorough purification of formaldehyde gas removes (rather than single absorption), increases the functionality of gypsum sheet material material, improve
The competitiveness in product market, can bring good economic benefit；
2. gypsum fiber plate material prepared by the present invention meets the requirement of national green ecological architectural material, can apply
In preparation and production green ecological environmental-friendly construction material, especially production, which has, adsorbs and has both Photocatalytic Degradation of Indoor Formaldehyde
The synergistic purification characteristic of gas, is effectively improved the construction material of indoor air quality, has opened up new function gypsum fiber plate
The approach of material.
3. the present invention has absorption and light using a kind of high titanium slag base mineral wool gypsum fiber plate material of high titanium slag preparation
The double effects of catalytic degradation formaldehyde efficiently carry out the absorption of indoor formaldehyde using titanium resource and removal purify, while the present invention
Provided method and process is simple, at low cost, low energy consumption, while can turn waste into wealth, and is expected to realize high titanium slag base slag cotton rock
The large scale preparation of cream fiberboard has extraordinary application prospect.
Detailed description of the invention
Fig. 1 is high titanium slag base slag wool fiber material object photo used in the present invention；
Fig. 2 is the photo with absorption, the gypsum fiber plate of photocatalysis performance that the present invention prepares；
Fig. 3 is the experimental provision schematic diagram for simulating formaldehyde degradation by photocatalytic oxidation process under ultraviolet source；(a) photocatalysis experimental provision；
(b) single one physical adsorption experimental apparatus.
Specific embodiment
The present embodiment premised on technical solution of the present invention under implemented, give detailed embodiment and specific behaviour
Make process, but the present invention is not limited to following embodiments.
Below in conjunction with drawings and examples, the invention will be further described.
High titanium slag base slag wool fiber is to be sprayed with the high titanium slag of molten state through compressed air in each embodiment in the present invention
Blown flocculence fiber, TiO in the high titanium slag of molten state2Content is 22%~25%；High titanium slag base slag wool fiber is flat
Equal diameter is 1.30~3.60 μm, 35~45mm of average length；As shown in Figure 1.
Building gypsum plaster is alpha semi-hydrated gypsum powder.
Water is tap water.
Embodiment 1
Component and its quality proportioning used for preparing product of the present invention 15g are as follows:
High titanium slag base slag wool fiber 10%
Building gypsum plaster 66.7%
Water 23.3%
High titanium slag base slag wool fiber is placed in 1~2h of ultrasound in supersonic wave cleaning machine, to remove the slag on mineral wool surface
Ball is cleaned, drying；High titanium slag base slag wool fiber 1.5g clean, after drying is weighed, is placed in 10.0g building gypsum plaster and stirs
It mixes uniformly at mixture, addition 3.5g water, which continues to stir, in mixture is made slurry；Then slurries are poured into 7cm
In × 7cm × 1cm mold, the wet base of plate is made.By wet base after room temperature sky is dry for 24 hours, it is placed in electric drying oven with forced convection,
Dry 2-3h, forms the plaster board with absorption, photocatalysis performance at 110 DEG C.
Embodiment 2
Component and its quality proportioning used for preparing product of the present invention 15g are as follows:
High titanium slag base slag wool fiber 6.7%
Building gypsum plaster 66.7%
Water 26.6%
High titanium slag base slag wool fiber is placed in 1~2h of ultrasound in supersonic wave cleaning machine, to remove the slag on mineral wool surface
Ball；Weigh it is clean, drying after high titanium slag base slag wool fiber 1.0g, be placed in 10.0g building gypsum plaster be stirred into it is mixed
Material is closed, addition 4.0g water, which continues to stir, in mixture is made slurry；Then slurries are poured into 7cm × 7cm × 1cm
In mold, the wet base of plate is made.By wet base after room temperature sky is dry for 24 hours, it is placed in electric drying oven with forced convection, it is dry at 110 DEG C
2-3h forms the plaster board with absorption, photocatalysis performance.
Embodiment 3
Component and its quality proportioning used for preparing product of the present invention 15g are as follows:
High titanium slag base slag wool fiber 3.3%
Building gypsum plaster 66.7%
Water 30%
High titanium slag base slag wool fiber is placed in 1~2h of ultrasound in supersonic wave cleaning machine, to remove the slag on mineral wool surface
Ball；High titanium slag base slag wool fiber 0.5g clean, after drying is weighed, is placed in 10g building gypsum plaster and is stirred into mixing
Material, addition 4.5g water, which continues to stir, in mixture is made slurry；Then slurries are poured into 7cm × 7cm × 1cm mould
In tool, the wet base of plate is made.It by wet base after room temperature sky is dry for 24 hours, is placed in electric drying oven with forced convection, the dry 2- at 110 DEG C
3h forms the plaster board with absorption, photocatalysis performance.It is manufactured in the present embodiment prepare have absorption, photocatalysis
The gypsum fiber plate of performance is as shown in Figure 2.
Embodiment 4
Component and its quality proportioning used in product of the present invention are prepared in embodiment 4 are as follows: high titanium slag base slag wool fiber
3%；Building gypsum plaster 68%；Water 29%；Other preparation process are the same as embodiment 3.
Component and its quality proportioning used for preparing product of the present invention 15g are as follows:
High titanium slag base slag wool fiber 3%
Building gypsum plaster 66.7%
Water 30.3%
High titanium slag base slag wool fiber is placed in 1~2h of ultrasound in supersonic wave cleaning machine, to remove the slag on mineral wool surface
Ball；Weigh it is clean, drying after high titanium slag base slag wool fiber 0.45g, be placed in 10.0g building gypsum plaster be stirred into it is mixed
Material is closed, addition 4.55g water, which continues to stir, in mixture is made slurry；Then by slurries pour into 7cm × 7cm ×
In 1cm mold, the wet base of plate is made.It by wet base after room temperature sky is dry for 24 hours, is placed in electric drying oven with forced convection, is done at 110 DEG C
Dry 2-3h forms the plaster board with absorption, photocatalysis performance.
Embodiment 5
Component and its quality proportioning used in product of the present invention are prepared in embodiment 5 are as follows: high titanium slag base slag wool fiber
3%；Building gypsum plaster 65%；Water 32%；Other preparation process are the same as embodiment 3.
Embodiment 6
Component and its quality proportioning used in product of the present invention are prepared in embodiment 6 are as follows: high titanium slag base slag wool fiber
10%；Building gypsum plaster 68%；Water 22%；Other preparation process are the same as embodiment 3.
Test example 1
Performance test prepared by the present invention with absorption, the gypsum fiber plate of photocatalysis performance.
The gypsum fiber plate with photocatalysis performance of Examples 1 to 4 is subjected to Photocatalytic Degradation of Formaldehyde performance test,
Its process is as follows:
37%~40% formaldehyde is used to analyze formalin that pure solution compound concentration is 8 μ g/L as reaction solution.?
Photocatalysis experiment is carried out in the closed experimental provision of shading shown in Fig. 3.Examples 1 to 4 had into absorption, photocatalysis performance
Gypsum fiber plate is cut into 1cm × 1cm × 1cm square fritter, is placed in quartz glass bottle, and addition 400ml concentration is 8 μ
The formalin of g/L is connected ultraviolet source at room temperature and is reacted.Wherein the ultraviolet source in device Fig. 3 (a) uses
The ultraviolet lamp tube (15W, wavelength 254nm) of 10 same sizes is put in pairs on both sides, guarantees gypsum fiber plate uniform irradiation
Ultraviolet light, UV Light intensity are 2.5mW/cm2, the suspended state of gypsum fiber plate in bottle is maintained by magnetic agitation.
A sample is taken every 1h in experiment, using concentration of formaldehyde in solution after phenol reagent method measurement reaction, to calculate
Removal efficiency with absorption, the gypsum fiber plate PARA FORMALDEHYDE PRILLS(91,95) of photocatalysis performance.
In addition, four groups of single one physical adsorption experiment Fig. 3 (b) of setting are carried out under dark conditions with photocatalysis experiment simultaneously,
The gypsum fiber plate with absorption, photocatalysis performance of Examples 1 to 4 is cut into 1cm × 1cm × 1cm square fritter,
It is placed in thin mouth brown bottle.In addition to no ultraviolet light, plaster board composition proportion, formalin concentration, sample time with
And the test method of concentration of formaldehyde is consistent with photocatalysis experiment.Photocatalytic degradation experiment and single one physical Adsorption experimental results
Difference is the photocatalytic activity of gypsum fiber plate PARA FORMALDEHYDE PRILLS(91,95).
Table 1 has the removal rate (%) of the gypsum fiber plate material PARA FORMALDEHYDE PRILLS(91,95) of photocatalysis performance
As it can be seen from table 1 the eliminating rate of absorption of formaldehyde increases with the increase of high titanium slag base mineral wool mass percent；
In photocatalysis experiment, total removal rate then reduces with the increase of high titanium slag base mineral wool mass percent, therefore photocatalytic activity
The trend reduced with the increase of high titanium slag base mineral wool mass percent is presented.With high titanium slag base mineral wool mass percent
Increase, high titanium slag base mineral wool plasterboard be capable of formaldehyde adsorption component content increase, high titanium slag base mineral wool plasterboard energy
The absorption point that enough provides increases, and is conducive to the absorption of high titanium slag base mineral wool plasterboard PARA FORMALDEHYDE PRILLS(91,95), thus eliminating rate of absorption with
Increase.According to photocatalytic mechanism analysis it is found that the quantity for the electron-hole pair that the photocatalytic degradation and catalyst of formaldehyde generate
It is related.Although the mass percent for increasing high titanium slag base mineral wool in plasterboard can theoretically increase generation electron-hole
Pair quantity.And high titanium slag base mineral wool is blended in high titanium slag base mineral wool plasterboard, when high titanium slag base mineral wool plasterboard
When constancy of volume, increases the mass percent of high titanium slag base mineral wool, cause high titanium slag base mineral wool in high titanium slag base mineral wool
Bad dispersibility in plasterboard, reunites, and causes a part of high titanium slag base mineral wool that can not be irradiated to ultraviolet light, to make its production
The quantity of raw electron-hole pair is reduced, and photocatalytic activity is caused to reduce.Therefore, using 3-10% high titanium slag base of the invention
Total removal effect of the plasterboard of slag wool fiber content, PARA FORMALDEHYDE PRILLS(91,95) is best.
The gypsum fiber plate prepared in the embodiment of the present invention carries out resource utilization to high titanium slag base mineral wool, wherein calcium
Titanium ore phase (CaTiO3) there is photocatalysis performance, the high titanium slag base mineral wool gypsum fiber plate material prepared has absorption and light
The double effects of catalytic degradation formaldehyde.Under room temperature, the only high titanium slag base mineral wool gypsum containing 3% high titanium slag base mineral wool
Plate is 2.5mW/cm in intensity of illumination2Ultraviolet light under, to concentration be 8.0 μ g/L formalins total removal rate with regard to reachable
To 25.79%, wherein photocatalytic activity is 10.84%, accounts for the 42.03% of total removal rate, effect is very significant.
Claims (10)
1. a kind of plaster board with absorption, photocatalysis performance, which is characterized in that mainly by following weight percent raw material
It is made:
High titanium slag base slag wool fiber 3%~10%
Building gypsum plaster 65%~68%
Water 22%~32%.
2. the plaster board with absorption, photocatalysis performance according to claim 1, which is characterized in that the high titanium
Slag base slag wool fiber is with the high titanium slag of molten state through flocculence fiber made of compressed air spraying, the height of the molten state
TiO in titanium slag2Content is 22%~25%.
3. the plaster board with absorption, photocatalysis performance according to claim 1 or 2, which is characterized in that the height
Titanium slag base slag wool fiber average diameter is 1.30~3.60 μm, 35~45mm of average length.
4. the plaster board with absorption, photocatalysis performance according to claim 1, which is characterized in that the building
Land plaster is preferably alpha semi-hydrated gypsum powder.
5. the plaster board with absorption, photocatalysis performance according to claim 1, which is characterized in that the water is
Tap water.
6. a kind of preparation method described in claim 1 with absorption, the plaster board of photocatalysis performance, feature exist
In including the following steps:
(1) high titanium slag base slag wool fiber is cleaned by ultrasonic, removes slagging-off ball, and clean, dry；
(2) the high titanium slag base slag wool fiber after cleaning, dry is mixed with building gypsum plaster, stirs evenly and dry-mixing is made
Material；
(3) it adds water in dry mixture, stirs evenly and slurry is made；
(4) slurry in step (3) is poured into mold, makes the wet base of plate；
(5) wet base is done through room temperature sky, it is dry, form the plaster board with absorption, photocatalysis performance.
7. the preparation method according to claim 1 with absorption, the plaster board of photocatalysis performance, feature exist
In, step (1) ultrasonic 1~2h, the gravity being subject to when being moved in water according to slag ball with the fiber principle different with resistance,
The slag ball on mineral wool surface is removed.
8. the preparation method according to claim 1 with absorption, the plaster board of photocatalysis performance, feature exist
In step (5) the wet base is after room temperature sky is dry for 24 hours, dry 2~3h at 110 DEG C.
9. a kind of plaster board with absorption, photocatalysis performance described in claim 1 is preparing and is producing green ecological
Application in environmental-friendly construction material.
10. application according to claim 9.It is characterized in that, the green ecological environmental-friendly construction material be can adsorb,
Photocatalytic Degradation of Indoor Formaldehyde gas is effectively improved the construction material of indoor air quality.
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| CN113416053A (en) * | 2021-08-03 | 2021-09-21 | 单成敏 | Gypsum-based cement light sound insulation wallboard capable of adsorbing and decomposing formaldehyde |
| WO2023002367A1 (en) * | 2021-07-23 | 2023-01-26 | Knauf Gips Kg | High temperature sag resistant gypsum panel |
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| CN105399395A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Gypsum board with air purification function and preparation method thereof |
| CN107056213A (en) * | 2017-05-09 | 2017-08-18 | 安徽工业大学 | A kind of gypsum sheet material with conditioning photocatalysis performance and preparation method thereof |
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