CN111848074A - Antistatic floor based on magnesium silicate cementing material and preparation method - Google Patents
Antistatic floor based on magnesium silicate cementing material and preparation method Download PDFInfo
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- CN111848074A CN111848074A CN202010709031.XA CN202010709031A CN111848074A CN 111848074 A CN111848074 A CN 111848074A CN 202010709031 A CN202010709031 A CN 202010709031A CN 111848074 A CN111848074 A CN 111848074A
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- magnesium silicate
- antistatic floor
- antistatic
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- 239000000463 material Substances 0.000 title claims abstract description 51
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000000391 magnesium silicate Substances 0.000 title claims abstract description 40
- 229910052919 magnesium silicate Inorganic materials 0.000 title claims abstract description 40
- 235000019792 magnesium silicate Nutrition 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000002557 mineral fiber Substances 0.000 claims abstract description 9
- 239000012779 reinforcing material Substances 0.000 claims abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 45
- 239000000395 magnesium oxide Substances 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 23
- 229910021487 silica fume Inorganic materials 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 239000004113 Sepiolite Substances 0.000 claims description 10
- 229910052624 sepiolite Inorganic materials 0.000 claims description 10
- 235000019355 sepiolite Nutrition 0.000 claims description 10
- 238000007580 dry-mixing Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 6
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- 229910052620 chrysotile Inorganic materials 0.000 claims description 4
- CWBIFDGMOSWLRQ-UHFFFAOYSA-N trimagnesium;hydroxy(trioxido)silane;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].O[Si]([O-])([O-])[O-].O[Si]([O-])([O-])[O-] CWBIFDGMOSWLRQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 14
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000001095 magnesium carbonate Substances 0.000 description 5
- 235000014380 magnesium carbonate Nutrition 0.000 description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000009408 flooring Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 239000004609 Impact Modifier Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000002023 wood 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate cements
-
- 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
- C04B2111/60—Flooring 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
- C04B2111/90—Electrical properties
- C04B2111/905—Anti-static 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
- C04B2111/90—Electrical properties
- C04B2111/94—Electrically conducting 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
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)
- Floor Finish (AREA)
Abstract
The invention provides an antistatic floor based on a magnesium silicate cementing material and a preparation method thereof. The antistatic floor is prepared by taking magnesium silicate-based cementing material as a main body, adding mineral fiber, graphite powder and reinforcing material, and carrying out chemical action and intermolecular grain composition. The invention utilizes industrial byproducts, ensures the performances of stability, antistatic property, water resistance, heat insulation and the like of the antistatic floor, solves the problems of high cost, insufficient environmental protection and the like of the antistatic floor in the prior art, and has profound influence on the development of magnesium resources and the preparation of the antistatic floor in the future.
Description
Technical Field
The invention relates to the technical field of antistatic floors, in particular to an antistatic floor based on magnesium silicate cementing materials and a preparation method thereof.
Background
The types of flooring currently on the market are classified according to the purpose: household, antistatic flooring, commercial, etc. Different from the household floor, the floor used in the industrial factory building generally requires the floor to have the characteristics of pressure resistance, seamless performance, wear resistance and the like so as to meet different industrial production environments. For precision electronics, computer rooms and the like, the ground is required to have the characteristics, and the ground also has the antistatic performance, wherein static electricity is one of the most difficult hazards to eliminate of the precision electronics and the computer rooms, so that random faults, operation errors or processing information errors can occur during the operation of a computer, and certain precision components can be possibly out of order or even damaged.
The domestic antistatic floor adopts a wooden floor, a PVC antistatic floor, antistatic paint brushing and the like. At present, the wood floor has larger output and sales volume, but has more defects, such as over-standard formaldehyde concentration, poor flame-retardant and waterproof performance, poor antistatic performance, poor impact resistance and the like. Meanwhile, other anti-static floors are poor in hardness and wear resistance, and some of the anti-static floors even cannot meet the existing experimental use requirements.
At present, in the existing technology for preparing the antistatic floor, the calcium sulfate antistatic floor is prepared as a main method. For example, chinese patent CN108191366A discloses a method for preparing a calcium sulfate antistatic floor, which comprises weighing calcium sulfate, perlite, diatom ooze particles, graphite powder, mineral fibers and quicklime, adding into a stirrer, and stirring; adding plant fiber powder to obtain a mixture, and adding water to obtain a uniform mixture; after standing, sequentially adding an impact modifier and an antistatic agent, and stirring to obtain a mixed base material; standing the mixed base material for 6h at 25 ℃ under the environment with the humidity of 80%; and after standing, mixing the base materials, putting the mixture into a hot stamping extruder through a paving machine and a filler metering device to obtain the calcium sulfate antistatic floor. Chinese patent CN108912788A discloses a water-based epoxy antistatic floor paint and a preparation method thereof, wherein an epoxy curing agent, deionized water, a defoaming agent, a dispersing agent, an anti-floating-color-forming agent, talcum powder, white carbon black, barium sulfate, a base material wetting agent and conductive powder are adopted; epoxy resin and aliphatic glycidyl ether are used for preparing the antistatic floor coating. The calcium sulfate floor has excellent performances of flame retardance, skid resistance, sound insulation, dust prevention, pollution resistance, corrosion resistance and the like, but the impact resistance is poor, and the surface of the prepared floor is rough; meanwhile, the antistatic coating has high cost and chemical residues, which influence or even harm health. Therefore, the preparation of the green antistatic floor with good surface gloss and low cost is particularly important.
Most of the antistatic floors prepared by the prior art adopt antistatic paint, the antistatic floors can meet the use requirements by the method, but the price is higher, and industrial chemical reagents are mostly adopted, so that the problems of reagent dissolution and the like exist. Meanwhile, the floors used in the decoration field adopt clay and wall decoration materials using cement as a gelling agent, and although the floors have the advantages of high strength, good durability and the like, the floors have large capacity, poor antistatic, sound insulation and heat insulation properties, so that the application range of the floors is limited, and the stability of the floors and the uniformity of the distribution of the conductive performance are poor.
The magnesium silicate-based cementing material is prepared by taking light-burned magnesia powder prepared from magnesite as a raw material, adding industrial silica fume, an additive and water, has good fire resistance and can be used for preparing a fireproof castable material; the antistatic performance is good; the surface gloss is good; excellent fluidity. Is generally used for curing harmful wastes (such as nuclear wastes), fire-proof and heat-insulating boards, and the like. The excellent properties of the magnesium silicate-based cement, which is a green cement prepared from 90% of industrial waste, enable the application thereof to more and more fields. Therefore, the antistatic floor prepared based on the magnesium silicate-based cementing material has positive significance for the green development of future antistatic.
Disclosure of Invention
The invention aims to provide an antistatic floor based on a magnesium silicate cementing material and a preparation method thereof, which overcome the defects of the prior art, adopt light-burned magnesia powder produced by magnesite tailings, industrial waste silica fume and the like as raw materials, and add a water reducing agent, mineral fibers and the like to obtain the antistatic floor with good effect, solve the problems of overhigh cost, poor waterproofness, formaldehyde pollution and the like of the antistatic floor in the prior art, simultaneously utilize various industrial wastes which are difficult to treat, furthest reduce the cost for preparing the antistatic floor and coordinate the development of resources.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the technical scheme is as follows: an antistatic floor based on magnesium silicate cementing materials is characterized by comprising the following raw materials in parts by weight: 30-45 parts of magnesium silicate based cementing material, 10-15 parts of mineral fiber, 1-5 parts of graphite powder, 8-10 parts of reinforcing material and 0.5-1 part of water reducing agent.
The magnesium silicate-based cementing material is formed by mixing light-burned magnesia powder, silica fume and water, wherein the content of active magnesia measured by a citric acid method of the light-burned magnesia powder is more than or equal to 85 percent, the testing time is 16-20 s, and the mass ratio of the light-burned magnesia powder to the silica fume is 0.6-1; the mass ratio of the mixture of the light-burned magnesia powder and the silica fume to water is 1.5-2: 1.
The water reducing agent is any one or more than two of sodium hexametaphosphate, sodium tripolyphosphate or sodium metasilicate.
The mineral fiber has a specific surface area of 5-50 m2One or two of chrysotile and sepiolite in a ratio of/g.
The reinforcing material is carbon fiber with thickness of 0.7 micron and length of 1-6 mm.
The second technical proposal is that: a preparation method of an antistatic floor based on a magnesium silicate cementing material is characterized by comprising the following steps:
(1) dry mixing of raw materials: weighing light-burned magnesia powder, silica fume, sepiolite, carbon fiber and graphite powder, and putting the light-burned magnesia powder, the silica fume, the sepiolite, the carbon fiber and the graphite powder into a stirrer with 80-100 revolutions/min for dry mixing, wherein the dry mixing time is controlled to be 3-4 minutes;
(2) dissolving a reagent: adding water into a water reducing agent, and mixing uniformly to prepare a solution;
(3) mixing solid and liquid: adding the dry mixture prepared in the step (1) into the solution obtained in the step (2), stirring by using a stirrer of 60-100 revolutions per minute for 3-4 minutes according to GB/T9142-1988 technical conditions of concrete mixers, and obtaining the required magnesium silicate-based cementing material slurry;
(4) vibrating and exhausting: molding the cementing material slurry by casting, and performing vibration exhaust;
(5) standing the slurry: standing the uniform mixture;
(6) And (3) pressing and forming: and after standing, the mixed base material is filled into a device through a spreading machine and a metering device, enters a hot stamping extruder, and is subjected to hot stamping under the pressure of 8-10MPa and at the temperature of 60-80 ℃ to prepare the magnesium silicate based cementitious material antistatic floor.
The standing condition in the step (5) is as follows: the temperature is 18-24 ℃, the humidity is 70-90%, and the standing time is 30-60 min.
Compared with the prior art, the invention has the beneficial effects that:
1) the method comprises the steps of preparing magnesium silicate system gel material from light-burned magnesium oxide powder prepared from low-grade magnesite tailings, silicon ash formed by ferroalloy ferrosilicon process waste products, graphite powder and mineral fiber serving as raw materials through chemical action and intermolecular particle grading, and performing compression molding to prepare the antistatic floor with the resistance of 1 × 10-5~1*10-9(ii) a The limit load is more than or equal to 13350N; when the load is concentrated on 4450N, the winding degree is less than or equal to 2mm, and the permanent deformation is less than or equal to 0.25 mm; when the rolling load is 3560N, the winding degree is less than or equal to 2mm, and the permanent deformation is less than or equal to 0.5 mm; when the load is uniformly distributed at 2300N, the winding degree is less than or equal to 2mm, the requirement of national standard B common type is met, and the method is suitable for the requirements of computer rooms or industrial plants.
2) The whole process not only realizes the reutilization of magnesite tailing waste resources, but also opens up the new application of magnesite tailing light-burned magnesia powder, and greatly reduces the cost of raw materials of the whole process; the antistatic floor prepared from the prepared magnesium silicate cementing material has good antistatic performance, excellent water resistance and impact resistance, and no pollution, more than 90% of main raw materials of the whole antistatic floor are made of wastes, so that energy conservation and emission reduction are really realized, and good economic benefits are brought.
Detailed Description
The following examples are presented to further illustrate embodiments of the present invention:
exemplary embodiments of the present disclosure will be described in detail below, however, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The raw material components used in the following examples of the present invention are all commercially available, and the reagents used in the examples of the present invention are all chemically pure.
Example 1
The invention relates to an antistatic floor based on magnesium silicate cementing materials, which comprises the following raw materials: 150g of light-burned magnesia powder, 150g of silica fume, 200g of water, 5g of sodium hexametaphosphate, 2.5g of graphite powder, 30g of carbon fiber and 30g of sepiolite.
The invention relates to a preparation method for preparing an antistatic floor based on a magnesium silicate cementing material, which comprises the following steps:
(1) dry mixing of raw materials: weighing light-burned magnesia powder, silica fume, sepiolite, carbon fiber and graphite powder, and putting the light-burned magnesia powder, the silica fume, the sepiolite, the carbon fiber and the graphite powder into a stirrer with 80-100 revolutions/min for dry mixing, wherein the dry mixing time is controlled to be 3-4 minutes;
(2) dissolving a reagent: weighing a selected amount of sodium hexametaphosphate, adding the weighed water, and mixing and stirring for 2-3 minutes by using a stirrer to prepare a solution;
(3) Mixing solid and liquid: and (2) adding the dry mixed material obtained in the step (1) into the solution, and stirring by using a stirrer of 60-100 revolutions per minute for 6-8 minutes according to GB/T9142-1988 technical conditions of concrete mixers to obtain the required magnesium silicate-based cementing material slurry.
(4) Vibrating and exhausting: carrying out casting molding on the magnesium silicate-based cementing material slurry, and carrying out vibration exhaust to ensure that the obtained magnesium silicate cementing material is more compact;
(5) standing the slurry: placing the uniform mixture at 20 deg.C and humidity of 70%, and standing for 30-60 min;
(6) and (3) pressing and forming: and after standing, the mixed base material is filled into a device through a spreading machine and a metering device, enters a hot stamping extruder, and is subjected to hot stamping under the pressure of 8-10MPa and at the temperature of 60-80 ℃ to prepare the magnesium silicate based cementitious material antistatic floor.
Example 2
The invention relates to an antistatic floor based on magnesium silicate cementing materials, which comprises the following raw materials: 140g of light-burned magnesia powder, 150g of silica fume, 180g of water, 5g of sodium hexametaphosphate, 5g of graphite powder, 30g of carbon fiber and 30g of chrysotile.
The preparation method of the antistatic floor based on the magnesium silicate gel material is the same as that of the example 1.
Example 3
The invention relates to an antistatic floor based on magnesium silicate cementing material, which comprises the following raw materials: 120g of light-burned magnesia powder, 150g of silica fume, 180g of water, 5g of sodium hexametaphosphate, 7.5g of graphite powder, 40g of carbon fiber, and 40g of chrysotile and sepiolite (mixed according to the proportion of 1: 1).
The preparation method of the antistatic floor based on the magnesium silicate gel material is the same as that of the example 1.
Comparative example
The comparative example is a commercially available calcium sulfate antistatic floor.
Examples 1-3 above produced 600 x 32mm floorings and tested the results in accordance with standard test load SJ/T10796-2001-B, standard resistance (Ω) SJ/T10796-2001, and comparative example to the currently available calcium sulfate antistatic floorings in accordance with table 1 below.
Table 1 results of performance test of experimental samples of each example
From the data in the above table, the antistatic floor prepared based on the magnesium silicate cementing material is prepared by taking the magnesium silicate cementing material as a main body, adding mineral fiber, graphite powder and a reinforcing material, and preparing the antistatic floor through chemical action and intermolecular particle grading.
It is clear that the process according to the invention is only a preferred embodiment and is not intended to limit the scope of protection of the invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. An antistatic floor based on magnesium silicate cementing materials is characterized by comprising the following raw materials in parts by weight: 30-45 parts of magnesium silicate based cementing material, 10-15 parts of mineral fiber, 1-5 parts of graphite powder, 8-10 parts of reinforcing material and 0.5-1 part of water reducing agent.
2. The antistatic floor based on magnesium silicate gel material as claimed in claim 1, wherein the magnesium silicate gel material is formed by mixing light-burned magnesia powder, silica fume and water, the content of active magnesia measured by a citric acid method of the light-burned magnesia powder is more than or equal to 85 percent, the test time is 16-20 s, and the mass ratio of the light-burned magnesia powder to the silica fume is 0.6-1; the mass ratio of the mixture of the light-burned magnesia powder and the silica fume to water is 1.5-2: 1.
3. The antistatic floor based on magnesium silicate gel material as claimed in claim 2, wherein the water reducing agent is any one or a mixture of more than two of sodium hexametaphosphate, sodium tripolyphosphate or sodium metasilicate.
4. The antistatic floor based on magnesium silicate gel material as claimed in claim 1, wherein the mineral fiber has a specific surface area of 5-50 m2One or two of chrysotile and sepiolite in a ratio of/g.
5. The antistatic floor based on magnesium silicate gel material as claimed in claim 1, wherein the reinforcing material is carbon fiber with thickness of 0.7 μm and length of 1-6 mm.
6. A preparation method of an antistatic floor based on a magnesium silicate cementing material is characterized by comprising the following steps:
(1) dry mixing of raw materials: weighing light-burned magnesia powder, silica fume, sepiolite, carbon fiber and graphite powder, and putting the light-burned magnesia powder, the silica fume, the sepiolite, the carbon fiber and the graphite powder into a stirrer with 80-100 revolutions/min for dry mixing, wherein the dry mixing time is controlled to be 3-4 minutes;
(2) dissolving a reagent: adding water into a water reducing agent, and mixing uniformly to prepare a solution;
(3) mixing solid and liquid: adding the dry mixture prepared in the step (1) into the solution obtained in the step (2), stirring by using a stirrer of 60-100 revolutions per minute for 3-4 minutes according to GB/T9142-1988 technical conditions of concrete mixers, and obtaining the required magnesium silicate-based cementing material slurry;
(4) vibrating and exhausting: molding the cementing material slurry by casting, and vibrating and exhausting;
(5) standing the slurry: standing the uniform mixture;
(6) and (3) pressing and forming: and after standing, the mixed base material is filled into a device through a spreading machine and a metering device, enters a hot stamping extruder, and is subjected to hot stamping under the pressure of 8-10MPa and at the temperature of 60-80 ℃ to prepare the magnesium silicate based cementitious material antistatic floor.
7. The method for preparing the antistatic floor based on the magnesium silicate gel material as claimed in claim 6, wherein the method comprises the following steps: the standing condition in the step (5) is as follows: the temperature is 18-24 ℃, the humidity is 70-90%, and the standing time is 30-60 min.
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| CN113816718A (en) * | 2021-09-28 | 2021-12-21 | 西南科技大学 | Light wall board for building and preparation method thereof |
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