CN116514506A - High fluorine content gypsum water-resistant thistle board - Google Patents
High fluorine content gypsum water-resistant thistle board Download PDFInfo
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- CN116514506A CN116514506A CN202310352937.4A CN202310352937A CN116514506A CN 116514506 A CN116514506 A CN 116514506A CN 202310352937 A CN202310352937 A CN 202310352937A CN 116514506 A CN116514506 A CN 116514506A
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- 239000010440 gypsum Substances 0.000 title claims abstract description 84
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 25
- 239000011737 fluorine Substances 0.000 title claims abstract description 25
- 241000132536 Cirsium Species 0.000 title claims abstract description 9
- 239000003463 adsorbent Substances 0.000 claims abstract description 31
- 229920002545 silicone oil Polymers 0.000 claims abstract description 23
- 229920000881 Modified starch Polymers 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 239000004368 Modified starch Substances 0.000 claims abstract description 17
- 235000019426 modified starch Nutrition 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 150000004683 dihydrates Chemical class 0.000 claims abstract description 4
- 239000003093 cationic surfactant Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- RLCYSRMZBZANPX-UHFFFAOYSA-N 15-phenylpentadecan-1-amine Chemical compound NCCCCCCCCCCCCCCCC1=CC=CC=C1 RLCYSRMZBZANPX-UHFFFAOYSA-N 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 240000003183 Manihot esculenta Species 0.000 claims description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002873 Polyethylenimine Polymers 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 229960001927 cetylpyridinium chloride Drugs 0.000 claims description 2
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- SFVFIFLLYFPGHH-UHFFFAOYSA-M stearalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SFVFIFLLYFPGHH-UHFFFAOYSA-M 0.000 claims description 2
- 238000002715 modification method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 12
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- 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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/143—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- 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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
- C04B2111/0062—Gypsum-paper board like materials
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The application provides a high fluorine content gypsum water-fast thistle board, the gypsum board of paper includes: 100 parts by weight of gypsum clinker, 50 to 60 parts by weight of dihydrate gypsum prepared by water, 0.3 to 0.6 part by weight of organic silicone oil, 1 to 8 parts by weight of adsorbent, 0.2 to 1.5 parts by weight of glass fiber, 0.2 to 1 part by weight of modified starch and 0.3 to 1 part by weight of water reducer; the preparation method of the waterproof paper gypsum board comprises the following steps: uniformly stirring gypsum clinker, organic silicone oil, an adsorbent, glass fiber, modified starch, a water reducing agent and water, and then carrying out ultrasonic treatment for 20-60 s. The technical scheme that this application provided has reduced fluorine to the influence of silicone oil performance for panel water resistance is better, has still obtained the effect that mechanical properties improves simultaneously.
Description
Technical Field
This disclosure relates to, but is not limited to, a building material, and more particularly, but not limited to, the manufacture of water resistant paper gypsum board from gypsum raw materials having a high fluorine impurity content.
Background
The gypsum board is made up by using gypsum as main raw material, adding proper quantity of additive and fibre, using specially-made paper as face-protecting material and making them pass through a certain preparation process. Are commonly used for indoor partition walls and suspended ceilings.
At present, the main raw materials of the domestic paper gypsum board production line are desulfurized gypsum and phosphogypsum. Desulfurization gypsum is a byproduct in the wet desulfurization process of coal-fired power plants. The raw flue gas of the coal-fired power plant and the adopted absorbent contain metal ions such as iron, magnesium, aluminum, manganese and the like and anions such as fluorine, chlorine and the like, and the ions can enter the slurry of the absorption tower along with the washing of the flue gas and finally exist in the desulfurized gypsum. Phosphogypsum is a byproduct of phosphoric acid (wet phosphoric acid) prepared by decomposing phosphorite with sulfuric acid, and impurities mainly comprise phosphorus and water-soluble fluorine, and meanwhile, part of organic impurities and insoluble impurities are also contained. These impurities can affect the performance properties of phosphogypsum.
The presence of fluorine can cause the gypsum dihydrate crystals to grow into a rod shape from a needle shape, the inter-crystal bridging is reduced, the pores are increased, the crystal structure is loose, and the strength of the hardened body is reduced.
In the production of water-resistant gypsum plasterboards, silicone oil is generally used as a water repellent to be added to the gypsum core. However, the presence of fluorine affects the change of Si-O-Si bonds in the silicone oil, resulting in poor effect of the silicone oil waterproofing agent.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The purpose of this application is to propose a water-resistant thistle board, this thistle board can effectively get rid of the influence of soluble F to organic silicone oil hydrophobicity, guarantees that the thistle board has excellent water resistance, promotes gypsum board strength property simultaneously.
The application provides a high fluorine content desulfurization gypsum water-fast thistle board, the gypsum board of paper includes: 100 parts by weight of gypsum clinker, 50 to 60 parts by weight of dihydrate gypsum prepared by water, 0.3 to 0.6 part by weight of organic silicone oil, 1 to 8 parts by weight of adsorbent, 0.2 to 1.5 parts by weight of glass fiber, 0.2 to 1 part by weight of modified starch and 0.3 to 1 part by weight of water reducer;
the preparation method of the waterproof paper gypsum board comprises the following steps: uniformly stirring gypsum clinker, organic silicone oil, an adsorbent, glass fiber, modified starch, a water reducing agent and water, and then carrying out ultrasonic treatment for 20-60 s.
In one embodiment provided herein, the adsorbent is selected from any one or more of zeolite, bentonite, and diatomaceous earth.
In one embodiment provided herein, the adsorbent has an average particle size of 2 μm to 30 μm.
In one embodiment provided herein, the adsorbent is modified by a method comprising:
the adsorbent is kept at 200 ℃ to 600 ℃ for 0.5h to 1h, and is washed to room temperature by deionized water;
adding the washed adsorbent into a cationic surfactant solution with the concentration of 0.5 to 3wt.% and vibrating for 4 to 8 hours at the temperature of 20 to 40 ℃;
washing the oscillated adsorbent with deionized water, and drying at 50-120 ℃ to obtain the modified adsorbent.
In one embodiment provided herein, the fluorine content of the gypsum clinker is from 200ppm to 2000ppm.
In one embodiment provided herein, the fluorine content is 200ppm to 1000ppm.
In one embodiment provided herein, the gypsum clinker has a specific surface area of 300m 2 Kg to 400m 2 And/kg, wherein the specific surface area is Bo's specific surface area.
In one embodiment provided herein, the gypsum clinker has a particle size of 30 μm to 100 μm.
In one embodiment provided herein, the silicone oil is selected from any one or more of hydrogen-containing silicone oil and methyl silicone oil.
In one embodiment provided herein, the cationic surfactant is any one or more of cetyltrimethylammonium bromide, cetylpyridinium chloride, polyamide, polyethylenimine, octadecyldimethylbenzyl ammonium chloride, and benzyltetradecyl ammonium.
In one embodiment provided herein, the glass fibers have a diameter of 10 μm to 20 μm and a length of 6mm to 10mm.
In one embodiment provided herein, the modified starch is selected from any one or more of modified corn starch, modified tapioca starch.
In one embodiment provided herein, the modified starch has a viscosity of 1000 mPa-s to 5000 mPa-s.
In one embodiment provided herein, the water reducing agent is one or more of a polycarboxylate water reducing agent or a naphthalene-based water reducing agent.
In yet another aspect, the present application provides a method for preparing the above thistle board, the method comprising:
stirring gypsum clinker, organic silicone oil, an adsorbent, glass fiber, modified starch, a water reducing agent and water, and then carrying out ultrasonic treatment for 20s to 60s at an ultrasonic frequency of 25kHz to 60kHz to prepare gypsum slurry;
pouring the gypsum slurry after ultrasonic treatment on the facing paper, lapping and firmly bonding to form, preparing a wet board, and solidifying and drying the wet board to obtain the paper-surface gypsum board.
In one embodiment provided herein, after the wet board solidifies, it enters the dryer. The temperature of the first area of the dryer is 135 ℃ to 150 ℃, the temperature of the second area is 120 ℃ to 130 ℃, and the temperature of the third area is 90 ℃ to 100 ℃. The speed of the dryer is 55-65m/min. And trimming, sealing and packaging the dried gypsum board to obtain the gypsum water-resistant paper-surface gypsum board with high fluorine content.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Other advantages of the present application may be realized and attained by the structure particularly pointed out in the written description.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application are described in detail below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
In the embodiment and the comparative example, the desulfurized gypsum clinker is obtained by stir-frying desulfurized gypsum raw material, and the fluorine content in the desulfurized gypsum clinker is 862ppm.
The phosphogypsum clinker is prepared by frying phosphogypsum raw materials, and the fluorine content in the phosphogypsum clinker is 1268ppm.
The specific surface area of the prepared phosphogypsum clinker and the desulfurized gypsum clinker is 300m 2 Kg to 400m 2 Kg, wherein the specific surface area is Bo's specific surface area; the particle size is 30 μm to 100 μm.
The organic silicone oil is hydrogen-containing silicone oil, and is purchased from Wake chemical industry company and BS94 brand.
The glass fibers have an average length of 6mm to 10mm and an average diameter of 10 μm to 20 μm;
the modified starch is modified corn starch, and is purchased from east Asia building materials limited company in Jinzhou, and the viscosity is 4300 mPa.s.
The water reducer is a polycarboxylate water reducer, and is purchased from Hubei mountain tree wind building material science and technology Co., ltd.
The adsorbent is modified zeolite, and the zeolite is purchased from a moisturizing environment-friendly material and has the brand of 3A. The adsorbent has an average particle diameter of 2 μm to 30 μm.
The modification treatment method comprises the following steps: the adsorbent is kept at 400 ℃ for 0.5h, and is washed to room temperature by deionized water;
adding the washed adsorbent into a cationic surfactant solution with the concentration of 1wt.% and vibrating for 6 hours at the temperature of 30 ℃;
washing the oscillated adsorbent with deionized water, and drying at 90 ℃ to obtain the modified adsorbent. The cationic surfactant is cetyl trimethyl ammonium bromide.
Example 1
The embodiment provides a waterproof paper surface gypsum board prepared from gypsum with high fluorine content, which comprises the following components: 100 parts of desulfurized gypsum clinker, 0.3 part of organic silicone oil, 2 parts of zeolite, 0.3 part of glass fiber, 0.3 part of modified starch, 0.4 part of water reducer and 50 parts of water.
The water-resistant paper gypsum board prepared from the gypsum with high fluorine content is prepared by the following method:
(1) Uniformly stirring gypsum clinker, organic silicone oil, zeolite, glass fiber, modified starch, a water reducing agent and water, and then performing ultrasonic treatment for 20 seconds, wherein the ultrasonic frequency is 25kHz.
(2) Pouring the gypsum slurry after ultrasonic treatment on the facing paper, and carrying out lap joint and firm bonding molding to prepare a wet board;
(3) And after the wet plate is solidified, the wet plate enters a dryer. The temperature of the first area of the dryer is 135-150 ℃, the temperature of the second area is 120-130 ℃, and the temperature of the third area is 90-100 ℃. The dryer speed was 60m/min. And trimming, sealing and packaging the dried gypsum board to obtain the high-fluorine-content desulfurized gypsum water-resistant paper-surface gypsum board.
Example 2
The embodiment provides a waterproof paper surface gypsum board prepared from gypsum with high fluorine content, which comprises the following components: 100 parts of phosphogypsum clinker, 0.4 part of organic silicone oil, 4 parts of bentonite, 1 part of glass fiber, 0.6 part of modified starch, 0.6 part of water reducer and 55 parts of water.
The preparation method of the water-resistant paper gypsum board prepared from the gypsum with high fluorine content in the embodiment is the same as that in the embodiment 1.
Example 3
The embodiment provides a waterproof paper surface gypsum board prepared from gypsum with high fluorine content, which comprises the following components: 100 parts of desulfurized gypsum clinker, 0.6 part of organic silicone oil, 8 parts of diatomite, 1.5 parts of glass fiber, 0.8 part of modified starch, 0.8 part of water reducer and 58 parts of water.
The preparation method of the water-resistant paper gypsum board prepared from the gypsum with high fluorine content in the embodiment is the same as that in the embodiment 1.
Comparative example 1
This comparative example differs from example 1 only in that: no adsorbent was added to the gypsum board. The remaining components and preparation methods were the same as in example 1.
Comparative example 2
This comparative example differs from example 1 only in that: the preparation method is not subjected to ultrasonic treatment. The remaining components were the same as in example 1.
Comparative example 3
This comparative example differs from example 1 only in that: the amount of the adsorbent added was 15 parts by weight. The remaining components and preparation methods were the same as in example 1.
Comparative example 4
This comparative example differs from example 1 only in that: the ultrasonic treatment is carried out for 2min in the preparation method (1). The remaining components and preparation methods were the same as in example 1.
Comparative example 5
This comparative example differs from example 1 only in that: the ultrasonic treatment in the preparation method (1) is carried out for 10s. The remaining components and preparation methods were the same as in example 1.
Performance testing
The performance of the 12mm thick gypsum plasterboards prepared in examples 1 to 3 and comparative examples 1 to 4 above was tested according to the method prescribed in the national standard of China GB/T9775-2008. The test results are shown in table 1 below.
Table 1 effect of implementation
Test results show that the water-resistant paper gypsum board prepared from the gypsum with high fluorine content has good water resistance and further improved strength.
Claims (10)
1. A high fluorine content desulfurized gypsum water resistant gypsum board, said gypsum board comprising: 100 parts by weight of gypsum clinker, 50 to 60 parts by weight of dihydrate gypsum prepared by water, 0.3 to 0.6 part by weight of organic silicone oil, 1 to 8 parts by weight of adsorbent, 0.2 to 1.5 parts by weight of glass fiber, 0.2 to 1 part by weight of modified starch and 0.3 to 1 part by weight of water reducer;
the preparation method of the waterproof paper surface plasterboard comprises the following steps: uniformly stirring gypsum clinker, organic silicone oil, an adsorbent, glass fiber, modified starch, a water reducing agent and water, and then carrying out ultrasonic treatment for 20-60 s.
2. The paper facer gypsum board of claim 1, wherein the adsorbent is selected from any one or more of zeolite, bentonite, and diatomaceous earth;
alternatively, the adsorbent has an average particle size of 2 μm to 30 μm;
optionally, the adsorbent is modified, and the adsorbent modification method comprises the following steps:
the adsorbent is kept at 200 ℃ to 600 ℃ for 0.5h to 1h, and is washed to room temperature by deionized water;
adding the washed adsorbent into a cationic surfactant solution with the concentration of 0.5 to 3wt.% and vibrating for 4 to 8 hours at the temperature of 20 to 40 ℃;
washing the oscillated adsorbent with deionized water, and drying at 50-120 ℃ to obtain the modified adsorbent.
3. The paper facer gypsum board of claim 2, wherein the cationic surfactant is any one or more of cetyltrimethylammonium bromide, cetylpyridinium chloride, polyamide, polyethylenimine, octadecyldimethylbenzyl ammonium chloride, and benzyltetradecyl ammonium.
4. A paper facer gypsum board according to any of claims 1 to 3, wherein the fluorine content of the gypsum clinker is from 200ppm to 2000ppm;
optionally, the fluorine content is 200ppm to 1000ppm.
5. A paper faced gypsum board according to any one of claims 1 to 3, wherein the gypsum clinker has a specific surface area of 300m 2 Kg to 400m 2 Kg, wherein the specific surface area is Bo's specific surface area;
optionally, the gypsum clinker has a particle size of 30 μm to 100 μm.
6. A paper facer gypsum board according to any one of claims 1 to 3, wherein the silicone oil is selected from any one or more of hydrogen-containing silicone oil and methyl silicone oil.
7. A paper faced gypsum board according to any one of claims 1 to 3, wherein the glass fibres have a diameter of 10 to 20 μm and a length of 6 to 10mm.
8. A paper gypsum board according to any one of claims 1 to 3, wherein the modified starch is selected from any one or more of modified corn starch, modified tapioca starch, optionally the modified starch having a viscosity of 1000 mPa-s to 5000 mPa-s.
9. A paper gypsum board according to any one of claims 1 to 3, wherein the water reducing agent is one or more of a polycarboxylate water reducing agent or a naphthalene-based water reducing agent.
10. The method for producing a thistle board according to any one of claims 1 to 9, characterized in that the production method comprises:
stirring gypsum clinker, organic silicone oil, an adsorbent, glass fiber, modified starch, a water reducing agent and water, and then carrying out ultrasonic treatment for 20s to 60s at an ultrasonic frequency of 25kHz to 60kHz to prepare gypsum slurry;
pouring the gypsum slurry after ultrasonic treatment on the facing paper, lapping and firmly bonding to form, preparing a wet board, and solidifying and drying the wet board to obtain the paper-surface gypsum board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352937.4A CN116514506A (en) | 2023-04-04 | 2023-04-04 | High fluorine content gypsum water-resistant thistle board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310352937.4A CN116514506A (en) | 2023-04-04 | 2023-04-04 | High fluorine content gypsum water-resistant thistle board |
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| CN116514506A true CN116514506A (en) | 2023-08-01 |
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| CN202310352937.4A Pending CN116514506A (en) | 2023-04-04 | 2023-04-04 | High fluorine content gypsum water-resistant thistle board |
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| Country | Link |
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| CN (1) | CN116514506A (en) |
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- 2023-04-04 CN CN202310352937.4A patent/CN116514506A/en active Pending
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