CN116573915A - High-performance gypsum material and preparation process thereof - Google Patents
High-performance gypsum material and preparation process thereof Download PDFInfo
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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
- 239000000463 material Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 82
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000002893 slag Substances 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010881 fly ash Substances 0.000 claims abstract description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010931 gold Substances 0.000 claims abstract description 22
- 229910052737 gold Inorganic materials 0.000 claims abstract description 22
- 239000003469 silicate cement Substances 0.000 claims abstract description 22
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 18
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 229910000077 silane Inorganic materials 0.000 claims abstract description 17
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims description 100
- 238000002156 mixing Methods 0.000 claims description 55
- 238000001035 drying Methods 0.000 claims description 40
- 239000000835 fiber Substances 0.000 claims description 34
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 30
- 238000000227 grinding Methods 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 25
- 238000005303 weighing Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 23
- 229920002748 Basalt fiber Polymers 0.000 claims description 20
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 230000000977 initiatory effect Effects 0.000 claims description 19
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 15
- 239000002270 dispersing agent Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 239000005543 nano-size silicon particle Substances 0.000 claims description 15
- 238000007873 sieving Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 10
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- WXENFNJZXUNZIN-UHFFFAOYSA-M decyl-dimethyl-tetradecylazanium bromide Chemical compound [Br-].C(CCCCCCCCC)[N+](C)(C)CCCCCCCCCCCCCC WXENFNJZXUNZIN-UHFFFAOYSA-M 0.000 claims description 10
- AXYXAGRFJFVAFQ-UHFFFAOYSA-M decyl-dodecyl-dimethylazanium;bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CCCCCCCCCC AXYXAGRFJFVAFQ-UHFFFAOYSA-M 0.000 claims description 10
- RSHHCURRBLAGFA-UHFFFAOYSA-M dimethyl-di(tetradecyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCC[N+](C)(C)CCCCCCCCCCCCCC RSHHCURRBLAGFA-UHFFFAOYSA-M 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 10
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 10
- 238000004381 surface treatment Methods 0.000 claims description 10
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 10
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 5
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 5
- -1 acrylic acid vinyl trioxysilane Chemical compound 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- OATFZMZHCHJBGR-UHFFFAOYSA-N ethenoxyperoxysilane Chemical compound C(=C)OOO[SiH3] OATFZMZHCHJBGR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 229940075507 glyceryl monostearate Drugs 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 5
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000003242 anti bacterial agent Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000001132 ultrasonic dispersion Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011426 gypsum mortar Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 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
- C04B28/144—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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/2092—Resistance against biological degradation
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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 invention relates to the technical field of gypsum materials, and provides a high-performance gypsum material and a preparation process thereof, wherein the surface of superfine steel slag powder and nano titanium dioxide is modified by a silane coupling agent, so that the dispersibility of the superfine steel slag powder and nano titanium dioxide in the gypsum material can be enhanced, the superfine steel slag powder and nano titanium dioxide can be more uniformly dispersed in the gypsum material, and the compressive strength and the water resistance of the gypsum material can be improved by adding the superfine steel slag powder and the nano titanium dioxide; secondly, the gypsum material is modified in a mode of compounding silane modified styrene-acrylic emulsion with inorganic components such as silicate cement powder, gold tailing powder and fly ash, so that the flexural strength of the gypsum material can be improved to a certain extent, and the mechanical property of the gypsum material is improved; finally, dispersing the antibacterial agent in the porous structure on the surface of the silicon dioxide molecules can further improve the mechanical properties of the gypsum material.
Description
Technical Field
The invention relates to the technical field of gypsum materials, in particular to a high-performance gypsum material and a preparation process thereof.
Background
Compared with cement products, gypsum products have obvious advantages, and gypsum has better heat insulation effect, and the production cost is far lower than that of cement products, and particularly, in recent years, great economic and social benefits are obtained for recycling industrial byproduct gypsum. The application in the building field mainly has the following aspects: firstly, gypsum-based decorative materials mainly comprise gypsum boards, gypsum lines, gypsum columns and the like; secondly, gypsum wall materials mainly comprise gypsum hollow laths, fiber gypsum boards, gypsum blocks and the like; thirdly, gypsum mortar mainly comprises gypsum plastering mortar, self-leveling floors and the like.
Along with the implementation of national policies such as energy conservation, emission reduction, recycling economy and the like, the trend of green development of building materials is more obvious, the wall materials are inevitably developed towards the directions of high strength, rainwater erosion resistance and the like, and the gypsum materials have the advantages of low cost, green and environment protection, but the mechanical strength and the water resistance of the gypsum materials are also required to be enhanced, so that if the market application prospect of the gypsum materials is required to be improved, the mechanical property and the water resistance of the conventional gypsum materials are required to be improved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects existing in the prior art, the invention provides a high-performance gypsum material and a preparation process thereof, which can effectively solve the problem of poor mechanical property and water resistance of the gypsum material in the prior art.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme:
a process for preparing a high performance gypsum material, the process comprising the steps of:
s1, grinding steel slag to prepare superfine steel slag powder, mixing the superfine steel slag powder with nano titanium dioxide according to an equal weight ratio, marking the mixture as a powder component, and mixing the powder component according to a weight ratio of 1: mixing 20g/ml of feed liquid ratio with absolute ethyl alcohol, adding a silane coupling agent with the same weight ratio as that of powder components after mixing, stirring for 10min at a stirring speed of 400-500r/min, filtering to remove filtrate, and drying in a drying oven at 55 ℃ for 2-3h to obtain modified powder;
s2, adding 5-8 parts by weight of silicate cement powder, 10-12 parts by weight of gold tailing powder and 3-5 parts by weight of fly ash into 100 parts by weight of silane modified styrene-acrylic emulsion, and stirring at a stirring speed of 300-500r/min for 10min to obtain an organic-inorganic composite modified component;
s3, according to 1:2:1:3, weighing tetradecyldimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride and ditetradecyl dimethyl ammonium chloride according to the weight ratio, mixing, dispersing in absolute ethyl alcohol with the weight being 15 times that of the mixture, adding nano silicon dioxide with the weight being 1/10 of that of the absolute ethyl alcohol, stirring at the stirring speed of 300-400r/min for 10min, then ultrasonically dispersing for 5min at the frequency of 25-26kHz, adding a silane coupling agent with the weight being equal to that of the nano silicon dioxide, continuously stirring for 10min, drying in a drying box at 55 ℃ until the weight is constant, grinding and sieving with a 200-mesh sieve to obtain the modified silicon dioxide;
s4, mixing polyvinyl alcohol fibers, lignocellulose and basalt fibers subjected to surface treatment according to an equal weight ratio to obtain fiber components, wherein the fiber components are prepared according to a weight ratio of 1: mixing 12g/ml of feed liquid ratio with absolute ethyl alcohol, adding a dispersing agent with the weight of 1-2% of that of the fiber component for stirring, adding modified silicon dioxide in S3 with the weight of 3-4 times of that of the fiber component for stirring at the original stirring speed for 10min, filtering to remove redundant liquid, placing the solution in a drying box at 52 ℃ for drying for 3-4h, grinding, sieving with a 50-mesh sieve, and marking the obtained solution as a filler component;
and S5, weighing 45-50 parts by weight of the modified powder in the S1 and 50-60 parts by weight of the filler component in the S4, mixing uniformly, adding 200 parts by weight of the organic-inorganic composite modified component in the S2, mixing continuously, adding into 300-500 parts by weight of the desulfurized gypsum after mixing uniformly, and stirring continuously for 20min to obtain the high-performance gypsum material.
Further, the preparation method of the superfine steel slag powder in the step S1 comprises the following steps: grinding the steel slag in a column mill, and collecting superfine grinding smaller than 30 mu m through a powder concentrator to obtain superfine steel slag powder.
Further, the preparation method of the silane modified styrene-acrylic emulsion in the step S2 comprises the following steps:
1) Weighing 5-6 parts by weight of octyl phenol polyoxyethylene ether and 7-8 parts by weight of sodium dodecyl sulfonate, adding 200 parts by weight of deionized water into a beaker, stirring at a stirring speed of 500-600r/min until the components are completely dissolved, and marking the components as emulsified components;
2) Weighing 12-15 parts by weight of styrene, 10-12 parts by weight of isobutyl methacrylate, 13-15 parts by weight of acrylic acid and 16-18 parts by weight of vinyltrioxysilane, mixing with one half of the emulsified components in 1), stirring at a stirring speed of 800-1000r/min for 30min, then recording as a pre-reaction component, weighing 2-3 parts by weight of ammonium persulfate, dissolving in deionized water with the mass being 10 times that of the ammonium persulfate, and recording as an initiating component;
3) Pouring the other half of the emulsified components left in the step 1) into a flask provided with an electric stirrer, a reflux condenser, a constant pressure funnel and a thermometer, adding 5-6 parts by weight of sodium bicarbonate into the flask, stirring until the mixture is dissolved, heating the mixture to 60-62 ℃, and then sequentially dripping the pre-reacted components and the initiating components in the step 2) under the stirring condition;
4) And 3) dropwise adding the pre-reaction component and the initiation component into the system formed after the pre-reaction component and the initiation component in the step 3), reacting for 2-3 hours at the temperature of 85-90 ℃, cooling to normal temperature after the reaction is finished, and regulating the pH value to 9-10 by using ammonia water to obtain the silane modified styrene-acrylic emulsion.
Still further, the stirring speed in 3) was 400r/min, and the dropping speed in 3) was 2 drops/s.
Further, the silicate cement powder and the gold tailing powder in the step S2 are respectively prepared by grinding silicate cement and gold tailings and sieving with a 50-mesh sieve, and the fly ash in the step S2 is the fly ash sieved by the 50-mesh sieve.
Further, the surface treatment method of basalt fiber in the step S4 comprises the following steps: soaking basalt fiber in acetone solution for 24h, washing with deionized water for 3 times, and drying in a drying oven at 55-60 ℃ for 2h.
Further, the dispersant in the S4 is one of glyceryl tristearate, glyceryl monostearate or ethylene bis-stearamide.
Further, the stirring speed in the step S4 is 300-400r/min.
Further, the stirring speed in the step S5 is 200-300r/min.
The high-performance gypsum material comprises the following raw materials: desulfurized gypsum, steel slag, nano titanium dioxide, a silane coupling agent, octylphenol polyoxyethylene ether, sodium dodecyl sulfonate, styrene, isobutyl methacrylate, acrylic acid vinyl trioxysilane, ammonium persulfate, sodium bicarbonate, ammonia water, silicate cement, gold tailings, fly ash, tetradecyl dimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride, ditetradecyl dimethyl ammonium chloride, nano silicon dioxide, polyvinyl alcohol fibers, lignocellulose, basalt fibers, a dispersing agent, absolute ethyl alcohol and deionized water.
Advantageous effects
The invention provides a high-performance gypsum material and a preparation process thereof, and compared with the prior art, the gypsum material has the following beneficial effects:
according to the invention, the surface of the superfine steel slag powder and the nano titanium dioxide is modified by the silane coupling agent, so that the dispersibility of the superfine steel slag powder and the nano titanium dioxide in the gypsum material can be enhanced, the superfine steel slag powder and the nano titanium dioxide can be more uniformly dispersed in the gypsum material, and the compressive strength and the water resistance of the gypsum material can be improved by adding the superfine steel slag powder and the nano titanium dioxide; secondly, the gypsum material is modified in a mode of compounding silane modified styrene-acrylic emulsion with inorganic components such as silicate cement powder, gold tailing powder and fly ash, so that the flexural strength of the gypsum material can be improved to a certain extent, and the mechanical property of the gypsum material is improved; finally, dispersing the antibacterial agent in a porous structure on the surface of the silica molecule, grafting and adsorbing the silica with antibacterial property in a fiber component through modification of a silane coupling agent, and modifying the fiber component, so that the mechanical property of the gypsum material is further improved through a mode of dispersing the modified fiber component in the gypsum material, and the prepared high-performance gypsum material has better market application prospect due to interference.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Example 1
The preparation process of the high-performance gypsum material of the embodiment comprises the following steps:
s1, grinding steel slag to prepare superfine steel slag powder, mixing the superfine steel slag powder with nano titanium dioxide according to an equal weight ratio, marking the mixture as a powder component, and mixing the powder component according to a weight ratio of 1: mixing 20g/ml of feed liquid ratio with absolute ethyl alcohol, adding a silane coupling agent with the same weight ratio as that of powder components after mixing, stirring for 10min at a stirring speed of 400r/min, filtering to remove filtrate, and drying in a drying oven at 55 ℃ for 2h to obtain modified powder;
s2, adding 5 parts by weight of silicate cement powder, 10 parts by weight of gold tailing powder and 3 parts by weight of fly ash into 100 parts by weight of silane modified styrene-acrylic emulsion, and stirring at a stirring speed of 300r/min for 10min to obtain an organic-inorganic composite modified component;
s3, according to 1:2:1:3, weighing tetradecyldimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride and ditetradecyl dimethyl ammonium chloride according to the weight ratio, mixing, dispersing in absolute ethyl alcohol with the weight being 15 times of that of the mixture, adding nano silicon dioxide with the weight being 1/10 of that of the absolute ethyl alcohol, stirring at the stirring speed of 300r/min for 10min, performing ultrasonic dispersion at the frequency of 25kHz for 5min, adding a silane coupling agent with the weight being equal to that of the nano silicon dioxide, continuously stirring for 10min, drying in a drying box at 55 ℃ until the weight is constant, grinding and sieving with a 200-mesh sieve to obtain the modified silicon dioxide;
s4, mixing polyvinyl alcohol fibers, lignocellulose and basalt fibers subjected to surface treatment according to an equal weight ratio to obtain fiber components, wherein the fiber components are prepared according to a weight ratio of 1: mixing a feed liquid ratio of 12g/ml with absolute ethyl alcohol, adding a dispersing agent with the weight being 1% of that of the fiber component to stir, adding modified silicon dioxide in S3 with the weight being 3 times that of the fiber component to stir for 10min at the original stirring speed, filtering to remove redundant liquid, drying in a drying oven at 52 ℃ for 3h, grinding, sieving with a 50-mesh sieve, and marking the obtained mixture as a filler component;
and S5, weighing 45 parts by weight of modified powder in the S1 and 50 parts by weight of filler component in the S4, mixing uniformly, adding 200 parts by weight of organic-inorganic composite modified component in the S2, mixing continuously, adding into 300 parts by weight of desulfurized gypsum after mixing uniformly, and stirring continuously for 20min to obtain the high-performance gypsum material.
The preparation method of the superfine steel slag powder in S1 comprises the following steps: grinding the steel slag in a column mill, and collecting superfine grinding smaller than 30 mu m through a powder concentrator to obtain superfine steel slag powder.
The preparation method of the silane modified styrene-acrylic emulsion in S2 comprises the following steps:
1) Weighing 5 parts by weight of octyl phenol polyoxyethylene ether and 7 parts by weight of sodium dodecyl sulfonate, adding 200 parts by weight of deionized water into a beaker, stirring at a stirring speed of 500r/min until the components are completely dissolved, and marking the components as emulsified components;
2) Weighing 12 parts by weight of styrene, 10 parts by weight of isobutyl methacrylate, 13 parts by weight of acrylic acid and 16 parts by weight of vinyltrioxysilane, mixing with one half of the emulsified components in 1), stirring at a stirring speed of 800r/min for 30min, then marking as a pre-reaction component, weighing 2 parts by weight of ammonium persulfate, dissolving in deionized water 10 times of the ammonium persulfate in mass, and marking as an initiating component;
3) Pouring the other half of the emulsified components left in the step 1) into a flask provided with an electric stirrer, a reflux condenser, a constant pressure funnel and a thermometer, adding 5 parts by weight of sodium bicarbonate into the flask, stirring until the mixture is dissolved, heating the mixture to 60 ℃, and sequentially dripping the pre-reacted components and the initiating components in the step 2) under the stirring condition;
4) And 3) dropwise adding the pre-reaction component and the initiation component into the system formed after the pre-reaction component and the initiation component, reacting for 2 hours at the temperature of 85 ℃, cooling to normal temperature after the reaction is finished, and regulating the pH value to 9 by using ammonia water to obtain the silane modified styrene-acrylic emulsion.
3) The stirring speed in (3) was 400r/min, and the dropping speed in (2) was 2 drops/s.
The silicate cement powder and the gold tailings powder in the S2 are respectively prepared by grinding silicate cement and gold tailings and sieving with a 50-mesh sieve, and the fly ash in the S2 is the fly ash sieved by the 50-mesh sieve.
The surface treatment method of basalt fiber in S4 is as follows: the basalt fiber is soaked in acetone solution for 24 hours, washed by deionized water for 3 times, and then placed in a drying oven at 55 ℃ for drying for 2 hours.
The dispersing agent in S4 is one of glyceryl tristearate, glyceryl monostearate or ethylene bis-stearamide.
The stirring speed in S4 was 300r/min.
The stirring speed in S5 was 200r/min.
The high-performance gypsum material comprises the following raw materials: desulfurized gypsum, steel slag, nano titanium dioxide, a silane coupling agent, octylphenol polyoxyethylene ether, sodium dodecyl sulfonate, styrene, isobutyl methacrylate, acrylic acid vinyl trioxysilane, ammonium persulfate, sodium bicarbonate, ammonia water, silicate cement, gold tailings, fly ash, tetradecyl dimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride, ditetradecyl dimethyl ammonium chloride, nano silicon dioxide, polyvinyl alcohol fibers, lignocellulose, basalt fibers, a dispersing agent, absolute ethyl alcohol and deionized water.
Example 2
The preparation process of the high-performance gypsum material of the embodiment comprises the following steps:
s1, grinding steel slag to prepare superfine steel slag powder, mixing the superfine steel slag powder with nano titanium dioxide according to an equal weight ratio, marking the mixture as a powder component, and mixing the powder component according to a weight ratio of 1: mixing 20g/ml of feed liquid ratio with absolute ethyl alcohol, adding a silane coupling agent with the same weight ratio as that of powder components after mixing, stirring for 10min at a stirring speed of 500r/min, filtering to remove filtrate, and drying in a drying oven at 55 ℃ for 3h to obtain modified powder;
s2, adding 8 parts by weight of silicate cement powder, 12 parts by weight of gold tailing powder and 5 parts by weight of fly ash into 100 parts by weight of silane modified styrene-acrylic emulsion, and stirring at a stirring speed of 500r/min for 10min to obtain an organic-inorganic composite modified component;
s3, according to 1:2:1:3, weighing tetradecyldimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride and ditetradecyl dimethyl ammonium chloride according to the weight ratio, mixing, dispersing in absolute ethyl alcohol with the weight being 15 times of that of the mixture, adding nano silicon dioxide with the weight being 1/10 of that of the absolute ethyl alcohol, stirring at the stirring speed of 400r/min for 10min, performing ultrasonic dispersion at the frequency of 26kHz for 5min, adding a silane coupling agent with the weight being equal to that of the nano silicon dioxide, continuously stirring for 10min, drying in a drying box at 55 ℃ until the weight is constant, grinding and sieving with a 200-mesh sieve to obtain the modified silicon dioxide;
s4, mixing polyvinyl alcohol fibers, lignocellulose and basalt fibers subjected to surface treatment according to an equal weight ratio to obtain fiber components, wherein the fiber components are prepared according to a weight ratio of 1: mixing a feed liquid ratio of 12g/ml with absolute ethyl alcohol, adding a dispersing agent with the weight being 2% of that of the fiber component to stir, adding modified silicon dioxide in S3 with the weight being 4 times that of the fiber component to stir for 10min at the original stirring speed, filtering to remove redundant liquid, drying in a drying oven at 52 ℃ for 4h, grinding, sieving with a 50-mesh sieve, and marking the obtained mixture as a filler component;
and S5, weighing 50 parts by weight of the modified powder in the S1 and 60 parts by weight of the filler component in the S4, mixing uniformly, adding 200 parts by weight of the organic-inorganic composite modified component in the S2, mixing continuously, adding into 500 parts by weight of the desulfurized gypsum after mixing uniformly, and stirring continuously for 20min to obtain the high-performance gypsum material.
The preparation method of the superfine steel slag powder in S1 comprises the following steps: grinding the steel slag in a column mill, and collecting superfine grinding smaller than 30 mu m through a powder concentrator to obtain superfine steel slag powder.
The preparation method of the silane modified styrene-acrylic emulsion in S2 comprises the following steps:
1) Weighing 6 parts by weight of octyl phenol polyoxyethylene ether and 8 parts by weight of sodium dodecyl sulfonate, adding 200 parts by weight of deionized water into a beaker, stirring at a stirring speed of 600r/min until the components are completely dissolved, and marking the components as emulsified components;
2) Weighing 15 parts by weight of styrene, 12 parts by weight of isobutyl methacrylate, 15 parts by weight of acrylic acid and 18 parts by weight of vinyltrioxysilane, mixing with one half of the emulsified components in 1), stirring at a stirring speed of 1000r/min for 30min, then marking as a pre-reaction component, weighing 3 parts by weight of ammonium persulfate to be dissolved in deionized water with the mass being 10 times that of the ammonium persulfate, and marking as an initiating component;
3) Pouring the other half of the emulsified components left in the step 1) into a flask provided with an electric stirrer, a reflux condenser, a constant pressure funnel and a thermometer, adding 6 parts by weight of sodium bicarbonate into the flask, stirring until the mixture is dissolved, heating the mixture to 62 ℃, and sequentially dripping the pre-reacted components and the initiating components in the step 2) under the stirring condition;
4) And 3) dropwise adding the pre-reaction component and the initiation component into the system formed after the pre-reaction component and the initiation component, reacting for 3 hours at the temperature of 90 ℃, cooling to normal temperature after the reaction is finished, and regulating the pH value to 10 by using ammonia water to obtain the silane modified styrene-acrylic emulsion.
3) The stirring speed in (3) was 400r/min, and the dropping speed in (2) was 2 drops/s.
The silicate cement powder and the gold tailings powder in the S2 are respectively prepared by grinding silicate cement and gold tailings and sieving with a 50-mesh sieve, and the fly ash in the S2 is the fly ash sieved by the 50-mesh sieve.
The surface treatment method of basalt fiber in S4 is as follows: the basalt fiber is soaked in acetone solution for 24 hours, washed by deionized water for 3 times, and then placed in a drying oven at 60 ℃ for drying for 2 hours.
The dispersing agent in S4 is one of glyceryl tristearate, glyceryl monostearate or ethylene bis-stearamide.
The stirring speed in S4 was 400r/min.
The stirring speed in S5 was 300r/min.
The high-performance gypsum material comprises the following raw materials: desulfurized gypsum, steel slag, nano titanium dioxide, a silane coupling agent, octylphenol polyoxyethylene ether, sodium dodecyl sulfonate, styrene, isobutyl methacrylate, acrylic acid vinyl trioxysilane, ammonium persulfate, sodium bicarbonate, ammonia water, silicate cement, gold tailings, fly ash, tetradecyl dimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride, ditetradecyl dimethyl ammonium chloride, nano silicon dioxide, polyvinyl alcohol fibers, lignocellulose, basalt fibers, a dispersing agent, absolute ethyl alcohol and deionized water.
Example 3
The preparation process of the high-performance gypsum material of the embodiment comprises the following steps:
s1, grinding steel slag to prepare superfine steel slag powder, mixing the superfine steel slag powder with nano titanium dioxide according to an equal weight ratio, marking the mixture as a powder component, and mixing the powder component according to a weight ratio of 1: mixing 20g/ml of feed liquid ratio with absolute ethyl alcohol, adding a silane coupling agent with the same weight ratio as that of powder components after mixing, stirring for 10min at a stirring speed of 500r/min, filtering to remove filtrate, and drying in a drying oven at 55 ℃ for 2h to obtain modified powder;
s2, adding 7 parts by weight of silicate cement powder, 11 parts by weight of gold tailing powder and 4 parts by weight of fly ash into 100 parts by weight of silane modified styrene-acrylic emulsion, and stirring at a stirring speed of 400r/min for 10min to obtain an organic-inorganic composite modified component;
s3, according to 1:2:1:3, weighing tetradecyldimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride and ditetradecyl dimethyl ammonium chloride according to the weight ratio, mixing, dispersing in absolute ethyl alcohol with the weight being 15 times of that of the mixture, adding nano silicon dioxide with the weight being 1/10 of that of the absolute ethyl alcohol, stirring at the stirring speed of 400r/min for 10min, performing ultrasonic dispersion at the frequency of 26kHz for 5min, adding a silane coupling agent with the weight being equal to that of the nano silicon dioxide, continuously stirring for 10min, drying in a drying box at 55 ℃ until the weight is constant, grinding and sieving with a 200-mesh sieve to obtain the modified silicon dioxide;
s4, mixing polyvinyl alcohol fibers, lignocellulose and basalt fibers subjected to surface treatment according to an equal weight ratio to obtain fiber components, wherein the fiber components are prepared according to a weight ratio of 1: mixing a feed liquid ratio of 12g/ml with absolute ethyl alcohol, adding a dispersing agent with the weight being 2% of that of the fiber component to stir, adding modified silicon dioxide in S3 with the weight being 4 times that of the fiber component to stir for 10min at the original stirring speed, filtering to remove redundant liquid, drying in a drying oven at 52 ℃ for 3h, grinding, sieving with a 50-mesh sieve, and marking the obtained mixture as a filler component;
and S5, weighing 48 parts by weight of modified powder in the S1 and 55 parts by weight of filler component in the S4, mixing uniformly, adding 200 parts by weight of organic-inorganic composite modified component in the S2, mixing continuously, adding into 400 parts by weight of desulfurized gypsum after mixing uniformly, and stirring continuously for 20min to obtain the high-performance gypsum material.
The preparation method of the superfine steel slag powder in S1 comprises the following steps: grinding the steel slag in a column mill, and collecting superfine grinding smaller than 30 mu m through a powder concentrator to obtain superfine steel slag powder.
The preparation method of the silane modified styrene-acrylic emulsion in S2 comprises the following steps:
1) Weighing 6 parts by weight of octyl phenol polyoxyethylene ether and 7 parts by weight of sodium dodecyl sulfonate, adding 200 parts by weight of deionized water into a beaker, stirring at a stirring speed of 600r/min until the components are completely dissolved, and marking the components as emulsified components;
2) Weighing 13 parts by weight of styrene, 11 parts by weight of isobutyl methacrylate, 14 parts by weight of acrylic acid and 17 parts by weight of vinyltrioxysilane, mixing with one half of the emulsified components in 1), stirring at a stirring speed of 900r/min for 30min, marking as a pre-reaction component, weighing 3 parts by weight of ammonium persulfate, dissolving in deionized water 10 times the mass of the ammonium persulfate, and marking as an initiating component;
3) Pouring the other half of the emulsified components left in the step 1) into a flask provided with an electric stirrer, a reflux condenser, a constant pressure funnel and a thermometer, adding 6 parts by weight of sodium bicarbonate into the flask, stirring until the mixture is dissolved, heating the mixture to 61 ℃, and sequentially dripping the pre-reacted components and the initiating components in the step 2) under the stirring condition;
4) And 3) dropwise adding the pre-reaction component and the initiation component into the reaction system in the step 3), reacting for 3 hours at the temperature of 88 ℃, cooling to normal temperature after the reaction is finished, and regulating the pH value to 10 by using ammonia water to obtain the silane modified styrene-acrylic emulsion.
3) The stirring speed in (3) was 400r/min, and the dropping speed in (2) was 2 drops/s.
The silicate cement powder and the gold tailings powder in the S2 are respectively prepared by grinding silicate cement and gold tailings and sieving with a 50-mesh sieve, and the fly ash in the S2 is the fly ash sieved by the 50-mesh sieve.
The surface treatment method of basalt fiber in S4 is as follows: the basalt fiber is soaked in acetone solution for 24 hours, washed by deionized water for 3 times, and then placed in a drying oven at 58 ℃ for drying for 2 hours.
The dispersing agent in S4 is one of glyceryl tristearate, glyceryl monostearate or ethylene bis-stearamide.
The stirring speed in S4 was 400r/min.
The stirring speed in S5 was 200r/min.
The high-performance gypsum material comprises the following raw materials: desulfurized gypsum, steel slag, nano titanium dioxide, a silane coupling agent, octylphenol polyoxyethylene ether, sodium dodecyl sulfonate, styrene, isobutyl methacrylate, acrylic acid vinyl trioxysilane, ammonium persulfate, sodium bicarbonate, ammonia water, silicate cement, gold tailings, fly ash, tetradecyl dimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride, ditetradecyl dimethyl ammonium chloride, nano silicon dioxide, polyvinyl alcohol fibers, lignocellulose, basalt fibers, a dispersing agent, absolute ethyl alcohol and deionized water.
Performance testing
The high performance gypsum materials prepared in examples 1-3 were labeled as example 1, example 2, example 3, respectively, two gypsum materials commercially available at random were labeled as comparative example 1 and comparative example 2, and then the performance of examples 1-3 and comparative examples 1-2 were examined, with the following specific examination items and methods:
1. the dry, wet and flexural strengths of examples 1-3 and comparative examples 1-2 were tested according to the GB/17669.4-1999 standard and the GB/17669.3-1999 standard using a fully automated compression bender (model: WHY-200).
2. Examples 1-3 and comparative examples 1-2 were respectively soaked in clean water for 24 hours, the surface water was wiped off after soaking, and the weight before and after soaking was weighed, and the weight increase rate was the water absorption rate.
The test results are recorded in the following table:
as shown in the above table, the compressive strength and flexural strength of the high-performance gypsum materials prepared in examples 1-3 are significantly higher than those of the gypsum materials of comparative examples 1-2, and the water absorption rate of the high-performance gypsum materials prepared in examples 1-3 is lower, so that it is demonstrated that the high-performance gypsum materials prepared in examples 1-3 have better mechanical properties and water resistance, and are more suitable for the markets of gypsum materials.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The preparation process of the high-performance gypsum material is characterized by comprising the following steps of:
s1, grinding steel slag to prepare superfine steel slag powder, mixing the superfine steel slag powder with nano titanium dioxide according to an equal weight ratio, marking the mixture as a powder component, and mixing the powder component according to a weight ratio of 1: mixing 20g/ml of feed liquid ratio with absolute ethyl alcohol, adding a silane coupling agent with the same weight ratio as that of powder components after mixing, stirring for 10min at a stirring speed of 400-500r/min, filtering to remove filtrate, and drying in a drying oven at 55 ℃ for 2-3h to obtain modified powder;
s2, adding 5-8 parts by weight of silicate cement powder, 10-12 parts by weight of gold tailing powder and 3-5 parts by weight of fly ash into 100 parts by weight of silane modified styrene-acrylic emulsion, and stirring at a stirring speed of 300-500r/min for 10min to obtain an organic-inorganic composite modified component;
s3, according to 1:2:1:3, weighing tetradecyldimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride and ditetradecyl dimethyl ammonium chloride according to the weight ratio, mixing, dispersing in absolute ethyl alcohol with the weight being 15 times that of the mixture, adding nano silicon dioxide with the weight being 1/10 of that of the absolute ethyl alcohol, stirring at the stirring speed of 300-400r/min for 10min, then ultrasonically dispersing for 5min at the frequency of 25-26kHz, adding a silane coupling agent with the weight being equal to that of the nano silicon dioxide, continuously stirring for 10min, drying in a drying box at 55 ℃ until the weight is constant, grinding and sieving with a 200-mesh sieve to obtain the modified silicon dioxide;
s4, mixing polyvinyl alcohol fibers, lignocellulose and basalt fibers subjected to surface treatment according to an equal weight ratio to obtain fiber components, wherein the fiber components are prepared according to a weight ratio of 1: mixing 12g/ml of feed liquid ratio with absolute ethyl alcohol, adding a dispersing agent with the weight of 1-2% of that of the fiber component for stirring, adding modified silicon dioxide in S3 with the weight of 3-4 times of that of the fiber component for stirring at the original stirring speed for 10min, filtering to remove redundant liquid, placing the solution in a drying box at 52 ℃ for drying for 3-4h, grinding, sieving with a 50-mesh sieve, and marking the obtained solution as a filler component;
and S5, weighing 45-50 parts by weight of the modified powder in the S1 and 50-60 parts by weight of the filler component in the S4, mixing uniformly, adding 200 parts by weight of the organic-inorganic composite modified component in the S2, mixing continuously, adding into 300-500 parts by weight of the desulfurized gypsum after mixing uniformly, and stirring continuously for 20min to obtain the high-performance gypsum material.
2. The process for preparing a high-performance gypsum material according to claim 1, wherein the preparation method of the superfine steel slag powder in S1 is as follows: grinding the steel slag in a column mill, and collecting superfine grinding smaller than 30 mu m through a powder concentrator to obtain superfine steel slag powder.
3. The process for preparing a high-performance gypsum material according to claim 1, wherein the preparation method of the silane modified styrene-acrylic emulsion in S2 is as follows:
1) Weighing 5-6 parts by weight of octyl phenol polyoxyethylene ether and 7-8 parts by weight of sodium dodecyl sulfonate, adding 200 parts by weight of deionized water into a beaker, stirring at a stirring speed of 500-600r/min until the components are completely dissolved, and marking the components as emulsified components;
2) Weighing 12-15 parts by weight of styrene, 10-12 parts by weight of isobutyl methacrylate, 13-15 parts by weight of acrylic acid and 16-18 parts by weight of vinyltrioxysilane, mixing with one half of the emulsified components in 1), stirring at a stirring speed of 800-1000r/min for 30min, then recording as a pre-reaction component, weighing 2-3 parts by weight of ammonium persulfate, dissolving in deionized water with the mass being 10 times that of the ammonium persulfate, and recording as an initiating component;
3) Pouring the other half of the emulsified components left in the step 1) into a flask provided with an electric stirrer, a reflux condenser, a constant pressure funnel and a thermometer, adding 5-6 parts by weight of sodium bicarbonate into the flask, stirring until the mixture is dissolved, heating the mixture to 60-62 ℃, and then sequentially dripping the pre-reacted components and the initiating components in the step 2) under the stirring condition;
4) And 3) dropwise adding the pre-reaction component and the initiation component into the system formed after the pre-reaction component and the initiation component in the step 3), reacting for 2-3 hours at the temperature of 85-90 ℃, cooling to normal temperature after the reaction is finished, and regulating the pH value to 9-10 by using ammonia water to obtain the silane modified styrene-acrylic emulsion.
4. A process for preparing a high performance gypsum material according to claim 3, wherein the stirring speed in 3) is 400r/min and the dripping speed in 3) is 2 drops/s.
5. The process for preparing a high-performance gypsum material according to claim 1, wherein the silicate cement powder and the gold tailings powder in S2 are respectively prepared by grinding silicate cement and gold tailings and sieving with a 50-mesh sieve, and the fly ash in S2 is the fly ash sieved with the 50-mesh sieve.
6. The process for preparing a high-performance gypsum material according to claim 1, wherein the surface treatment method of basalt fiber in S4 comprises: soaking basalt fiber in acetone solution for 24h, washing with deionized water for 3 times, and drying in a drying oven at 55-60 ℃ for 2h.
7. The process for preparing a high performance gypsum material according to claim 1, wherein the dispersant in S4 is one of glyceryl tristearate, glyceryl monostearate or ethylene bis stearamide.
8. The process for preparing a high performance gypsum material according to claim 1, wherein the stirring speed in S4 is 300-400r/min.
9. The process for preparing a high performance gypsum material according to claim 1, wherein the stirring speed in S5 is from 200 to 300r/min.
10. The high-performance gypsum material prepared by the preparation process of the high-performance gypsum material according to any one of claims 1 to 9, wherein the raw materials of the high-performance gypsum material comprise the following components: desulfurized gypsum, steel slag, nano titanium dioxide, a silane coupling agent, octylphenol polyoxyethylene ether, sodium dodecyl sulfonate, styrene, isobutyl methacrylate, acrylic acid vinyl trioxysilane, ammonium persulfate, sodium bicarbonate, ammonia water, silicate cement, gold tailings, fly ash, tetradecyl dimethyl decyl ammonium bromide, dodecyl dimethyl decyl ammonium bromide, hexadecyl trimethyl ammonium chloride, ditetradecyl dimethyl ammonium chloride, nano silicon dioxide, polyvinyl alcohol fibers, lignocellulose, basalt fibers, a dispersing agent, absolute ethyl alcohol and deionized water.
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Application publication date: 20230811 |