CN113831056A - Inorganic rubber powder composite powder and preparation method thereof - Google Patents
Inorganic rubber powder composite powder and preparation method thereof Download PDFInfo
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- CN113831056A CN113831056A CN202111217142.XA CN202111217142A CN113831056A CN 113831056 A CN113831056 A CN 113831056A CN 202111217142 A CN202111217142 A CN 202111217142A CN 113831056 A CN113831056 A CN 113831056A
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- 239000000843 powder Substances 0.000 title claims abstract description 92
- 229920001971 elastomer Polymers 0.000 title claims abstract description 44
- 239000005060 rubber Substances 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 20
- -1 alkali metal salt Chemical class 0.000 claims abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 7
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 229910021487 silica fume Inorganic materials 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 6
- 239000004281 calcium formate Substances 0.000 claims description 6
- 229940044172 calcium formate Drugs 0.000 claims description 6
- 235000019255 calcium formate Nutrition 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000000230 xanthan gum Substances 0.000 claims description 6
- 229920001285 xanthan gum Polymers 0.000 claims description 6
- 229940082509 xanthan gum Drugs 0.000 claims description 6
- 235000010493 xanthan gum Nutrition 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 3
- 229910052936 alkali metal sulfate Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 239000004816 latex Substances 0.000 abstract description 6
- 229920000126 latex Polymers 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 4
- 231100000252 nontoxic Toxicity 0.000 abstract description 3
- 230000003000 nontoxic effect Effects 0.000 abstract description 3
- 230000002194 synthesizing effect Effects 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 229920001897 terpolymer Polymers 0.000 description 3
- 229920001567 vinyl ester resin Polymers 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Images
Classifications
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- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to inorganic rubber powder composite powder and a preparation method thereof, wherein the inorganic rubber powder composite powder comprises, by weight, 360 parts of sodium silicate 200-; the additive is alkali metal salt or alkali metal hydroxide. The inorganic rubber powder composite powder provided by the invention adopts nontoxic and harmless inorganic metal minerals, has wide material sources, can replace a large amount of high-consumption high-pollution non-renewable materials used in the refining and synthesizing process of the existing redispersible latex powder, has almost no interface transition area between the produced inorganic composite rubber powder and aggregate, has good interface cementation and can improve the interface bonding strength in mortar.
Description
Technical Field
The invention relates to the field of building materials, in particular to inorganic rubber powder composite powder and a preparation method thereof.
Background
With the rapid development of socioeconomic, energy shortage and the crisis of environmental protection have become important factors restricting the benign development of society, wherein the problem of environmental protection is a hot topic widely studied and discussed. Energy conservation and emission reduction are one of important ways for solving the carbon emission dilemma in the future and are also a key way for solving the problem of environmental protection.
Various novel wall materials adopted in the building field are popularization and promotion of energy-saving and low-carbon technology, and the building mortar is increasingly functionalized and specialized. In order to meet the performance indexes of different types of mortar, various organic high polymer materials are added on the basis of the traditional cement mortar for improving the cohesion, cohesiveness, water resistance, weather resistance and flexibility of the mortar, and the organic high polymer materials mainly comprise dispersible latex powder. The redispersible latex powder product is generally water-soluble redispersible powder, and includes, for example, vinyl acetate-ethylene copolymer rubber powder, ethylene-vinyl chloride-vinyl laurate terpolymer rubber powder, vinyl acetate-ethylene-higher fatty acid vinyl ester terpolymer rubber powder, vinyl acetate-higher fatty acid vinyl ester copolymer rubber powder, acrylate-styrene copolymer rubber powder, vinyl acetate-acrylic acid-higher fatty acid vinyl ester terpolymer rubber powder, vinyl acetate homopolymerization rubber powder or styrene-butadiene copolymer rubber powder, and other rubber powder products, and most of the emulsions in the rubber powder synthesis process are prepared from petroleum-extracted chemical derivatives. The defects of pollution, non-reproducibility, high synthesis cost and the like exist in the refining process. The method is widely applied to the field of buildings and is bound to conflict with the direction of energy-saving and low-carbon environmental protection treatment.
Disclosure of Invention
In view of the above, it is necessary to provide an inorganic rubber powder composite powder and a preparation method thereof, which address at least one of the above-mentioned problems.
The invention provides inorganic rubber powder composite powder which comprises 360 parts by weight of sodium silicate 200-; the additive is alkali metal salt or alkali metal hydroxide.
In certain implementations of the first aspect, the alkali metal salt is an alkali metal sulfate and/or carbonate.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the ore fines are derived from impurity slag generated during a blast furnace iron making process.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the impurity slag includes water slag and gas-cooled slag.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the silica fume has a particle size of 200 mesh to 1000 mesh.
In a second aspect, the present application provides a method for preparing an inorganic rubber powder composite powder, which comprises the following steps:
mixing and stirring the sodium silicate, the calcium formate, the silica fume and the additive according to a ratio, and uniformly stirring to obtain a first mixture;
adding water into the first mixture, stirring for 30-50 minutes, adding the mineral powder and the xanthan gum, continuing stirring for 5-8 minutes, and cooling to room temperature to obtain a second mixture;
and crushing the second mixture, adding the polyoxyethylene and the zinc oxide, grinding for 10-15 minutes, and cooling to obtain the inorganic rubber powder composite powder.
In certain implementations of the second aspect, in the step of crushing the second mixture, the crushed second mixture has a particle size of 3 to 30 mm.
With reference to the second aspect and the foregoing implementation manners, in certain implementation manners of the second aspect, in the step of grinding for 10-15 minutes, the grinding temperature is less than or equal to 60 ℃.
The technical scheme provided by the embodiment of the invention has the following beneficial technical effects:
the inorganic rubber powder composite powder provided by the invention adopts nontoxic and harmless inorganic metal minerals, has wide material sources, can replace a large amount of high-consumption high-pollution non-renewable materials used in the refining and synthesizing process of the existing redispersible latex powder, has almost no interface transition area between the produced inorganic composite rubber powder and aggregate, has good interface cementation and can improve the interface bonding strength in mortar.
Additional aspects and advantages of the present invention 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 invention.
Drawings
Fig. 1 is a schematic flow chart of a method for preparing inorganic rubber powder composite powder in one embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Possible embodiments of the invention are given in the figures. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein by the accompanying drawings. The embodiments described by way of reference to the drawings are illustrative for the purpose of providing a more thorough understanding of the present disclosure and are not to be construed as limiting the present invention. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.
It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples.
The invention provides inorganic rubber powder composite powder which comprises 360 parts by weight of sodium silicate 200-; the additive of (b) is an alkali metal salt or an alkali metal hydroxide. Optionally, the alkali metal salt is an alkali metal sulfate and/or carbonate, such as sodium sulfate, potassium sulfate, lithium sulfate, potassium carbonate, lithium carbonate, sodium carbonate, and the like. The alkali metal hydroxide can be potassium hydroxide, sodium hydroxide, etc.
Optionally, the ore fines are derived from dross, an impurity produced during a blast furnace iron making process. Further, the impurity slag includes water slag and air-cooled slag. The raw material of the mineral powder is granulated blast furnace slag micro powder, which is called as slag micro powder or mineral powder for short, namely slag generated by rapidly cooling impurities generated in the blast furnace ironmaking process is usually granulated slag and air-cooled slag, and the granulated slag is divided into water extraction slag, water-soaking slag and the like.
Optionally, in certain implementations of embodiments of the first aspect, the silica fume has a particle size of 200 mesh to 1000 mesh. The micro silicon powder is also called as silicon ash or condensed silicon ash, which is a large amount of SiO with strong volatility produced in an ore-smelting electric furnace when ferroalloy is used for smelting ferrosilicon and industrial silicon (metallic silicon)2And Si gas, which is quickly oxidized, condensed and precipitated with air after being discharged. In view of production cost, the silica fume is processed from natural quartz in terms of particle size, and the silica fume with larger particle size, such as 200 meshes, 300 meshes, 400 meshes or 500 meshes, and smaller particle size, such as 600 meshes, 800 meshes or 1000 meshes, or even finer, can be selected.
The inorganic rubber powder composite powder provided by the invention adopts nontoxic and harmless inorganic metal minerals, has wide material sources, and can replace a large amount of high-consumption high-pollution non-renewable materials used in the refining and synthesizing process of the existing redispersible latex powder. The produced inorganic composite rubber powder and aggregate almost have no interface transition area, the interface cementation is good, and the interface bonding strength in the mortar can be improved.
Based on the same technical concept, the embodiment of the second aspect of the present application provides a method for preparing inorganic rubber powder composite powder, which is used for preparing the inorganic rubber powder composite powder of any one of the first aspect of the present application, as shown in fig. 1, and comprises the following steps:
s100: mixing and stirring sodium silicate, calcium formate, silica fume and an additive according to a ratio, and uniformly stirring to obtain a first mixture.
S200: adding water into the first mixture, stirring for 30-50 minutes, adding mineral powder and xanthan gum, continuously stirring for 5-8 minutes, and cooling to room temperature to obtain a second mixture.
S300: and crushing the second mixture, adding polyoxyethylene and zinc oxide, grinding for 10-15 minutes, and cooling to obtain the inorganic rubber powder composite powder.
Optionally, in certain implementations of embodiments of the second aspect, in the step of crushing the second mixture in S300, the crushed second mixture has a particle size of 3 to 30 mm.
Optionally, with reference to the foregoing implementation manners, in another implementation manner of an embodiment of the second aspect, in the step of grinding the S300 for 10 to 15 minutes, the grinding temperature is less than or equal to 60 ℃.
The application provides a product in mix with a large amount of homodisperse's nanometer mineral seed crystal, as the centre matter of microcosmic hydration reaction, play the effect that promotes the set cement and generate, promoted set cement and formed the crystal nucleus, increased the set cement total amount and helped reducing the microdefect, improve the dispersibility of granule to the performance of great amplitude promotion mortar.
The product provided by the application has an activating effect on vitreous minerals (such as various industrial ash residues) in cement and mineral admixtures, promotes the hydration reaction degree of the materials, activates some inert cementing materials, and forms more set cement, namely C-S-H calcium silicate gel, thereby improving the strength and the bonding performance.
A small amount of polymer components with high molecular weight are coupled in the composite powder and used as a polyelectrolyte hyperdispersant. The dispersing effect is related to the molecular weight of the hyperdispersant. When the molecular chain is long enough, one molecular chain can adsorb a plurality of slurry particles in the cement slurry, such as cement particles, soil particles, stone powder particles and the like; meanwhile, the surfaces of the particles are adsorbed by molecular chains of other high molecular compounds, so that a three-position network structure is formed, particle agglomeration and coagulation are promoted, moisture among the particles is locked, and the water retention is improved. The compound with the molecular weight of 500-5000 has better dispersibility, and the compound with the molecular weight of more than 5000 has better water retention. The compound which is reasonably prepared has a plurality of components with different molecular weights, so that the water retention and dispersion effects of the compound on the mortar are balanced. Therefore, the performances of interface bonding strength, workability, water resistance, cracking resistance, weather resistance and the like are greatly improved in the mortar.
The inorganic rubber powder composite powder can be used as a hyperdispersant in cement mortar, the hyperdispersant has a polyelectrolyte effect in a solution, and the reduced viscosity of the hyperdispersant is increased along with the increase of concentration and is obviously increased. Along with the dissolving and diluting process, the ionization degree of the ionic liquid in the solution is increased, so that the number of carboxylate ions on a macromolecular chain of the ionic liquid is increased, and a super-multivalent ion is formed; because the ions have negative charges and the like poles repel, the original contracted and curled polymer chains are unfolded, and water molecules in the solution can be diffused into the polymer groups, so that the volume of the polymer groups is expanded, and the macro expression is the water retention effect after water absorption. At this time, the viscosity of the solution increases due to the increase of intermolecular resistance due to the expansion of the molecular groups. In the process of stirring and forming the mortar, repulsive force between carboxylic groups with anions in the solution and cohesive force between metal cations are balanced, the repulsive force is reduced along with the gradual reduction of the anions, a polymer chain is intertwined again, internal water molecules are released, free water in the mortar is increased, and the working state of the mortar is kept for a long time. In addition, when the hyper-dispersant is adsorbed on the surface of the cement particles, the macromolecular chains are in an extended conformation, an adsorption protection layer with enough thickness is formed on the surface of the cement particles, and the steric hindrance effect is generated, so that the cement particles are in a dispersed state for a long time. Therefore, in the production process of the product provided by the application, the product has no pungent smell, is green and environment-friendly, and has high cost performance, and the cost of each ton of the product is less than half of the cost of the redispersible latex powder; when the mortar is practically used in mortar, the mixing amount is small, and the total cost is lower.
The following are specific examples:
example 1
220 parts of sodium silicate, 5 parts of calcium formate, 300 parts of silica fume and 10 parts of potassium hydroxide are fed into a stirrer in a specified sequence and are uniformly mixed.
And (3) pumping 120 parts of water into a stirrer, stirring at a high speed for 30min, and then adding 60 parts of mineral powder and 5 parts of xanthan gum. Stirring for 5min, discharging the material via the discharge port of the stirrer, and cooling to room temperature.
And conveying the cooled and solidified materials into a crusher for crushing treatment, and feeding the crushed small-particle materials meeting the grinding requirement (such as the particle size of 3mm) into a grinding machine through a conveying belt. And (3) continuously adding 18 parts of polyoxyethylene and 35 parts of zinc oxide into the grinding mill, mixing and grinding for 10 minutes while keeping the grinding temperature below 60 ℃, cooling the obtained mixture, screening and homogenizing to obtain the inorganic rubber powder composite material.
Example 2
200 parts of sodium silicate, 4 parts of calcium formate, 360 parts of silica fume and 5 parts of sodium carbonate are put into a stirrer in a specified sequence and are uniformly mixed.
And (3) pumping 200 parts of water into a stirrer, stirring at a high speed for 50min, and then adding 80 parts of mineral powder and 3 parts of xanthan gum. Stirring for 8 min, discharging the material via the discharge port of the stirrer, and cooling to room temperature.
And conveying the cooled and solidified materials into a crusher for crushing treatment, and feeding the crushed granular materials meeting the grinding requirement (such as the particle size of 30mm) into a grinding machine through a conveying belt. And (3) continuously adding 20 parts of polyoxyethylene and 30 parts of zinc oxide into the grinding mill, mixing and grinding for 15 minutes while keeping the grinding temperature below 60 ℃, cooling the obtained mixture, screening and homogenizing to obtain the inorganic rubber powder composite material.
Example 3
Feeding 360 parts of sodium silicate, 8 parts of calcium formate, 340 parts of silica fume and 20 parts of sodium sulfate into a stirrer in a specified sequence and uniformly mixing.
Pumping 180 parts of water into a stirrer, stirring at a high speed for 35min, and then adding 50 parts of mineral powder and 4 parts of xanthan gum. Stirring for 7 min, discharging the material via the discharge port of the stirrer, and cooling to room temperature.
And conveying the cooled and solidified materials into a crusher for crushing treatment, and feeding the crushed granular materials meeting the grinding requirement (such as the particle size of 10mm) into a grinding machine through a conveying belt. And continuously adding 10 parts of polyoxyethylene and 50 parts of zinc oxide into the grinding mill, mixing and grinding for 12 minutes while keeping the grinding temperature below 60 ℃, cooling the obtained mixture, screening and homogenizing to obtain the inorganic rubber powder composite material.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (8)
1. The inorganic rubber powder composite powder is characterized by comprising, by weight, 360 parts of sodium silicate 200-; the additive is alkali metal salt or alkali metal hydroxide.
2. The inorganic rubber powder composite powder according to claim 1, wherein the alkali metal salt is an alkali metal sulfate and/or carbonate.
3. The inorganic rubber powder composite powder as claimed in claim 1, wherein the ore powder is derived from dross generated during blast furnace iron making.
4. The inorganic rubber powder composite powder as claimed in claim 3, wherein the impurity slag includes water slag and air-cooled slag.
5. The inorganic rubber powder composite powder as claimed in claim 1, wherein the silica fume has a particle size of 200 to 1000 meshes.
6. A preparation method of inorganic rubber powder composite powder is characterized in that the preparation method of the inorganic rubber powder composite powder as claimed in any one of claims 1 to 5 comprises the following steps:
mixing and stirring the sodium silicate, the calcium formate, the silica fume and the additive according to a ratio, and uniformly stirring to obtain a first mixture;
adding water into the first mixture, stirring for 30-50 minutes, adding the mineral powder and the xanthan gum, continuing stirring for 5-8 minutes, and cooling to room temperature to obtain a second mixture;
and crushing the second mixture, adding the polyoxyethylene and the zinc oxide, grinding for 10-15 minutes, and cooling to obtain the inorganic rubber powder composite powder.
7. The method for preparing the inorganic rubber powder composite powder according to claim 6, wherein in the step of crushing the second mixture, the particle size of the crushed second mixture is 3 to 30 mm.
8. The preparation method of the inorganic rubber powder composite powder according to claim 6, wherein in the step of grinding for 10-15 minutes, the grinding temperature is less than or equal to 60 ℃.
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| JP2013505185A (en) * | 2009-09-21 | 2013-02-14 | シーカ・テクノロジー・アーゲー | Additive for inorganic binder |
| CN104478376A (en) * | 2014-12-29 | 2015-04-01 | 广西启利新材料科技股份有限公司 | Rapid geopolymer-based road repairing material |
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| CN110759662A (en) * | 2019-09-27 | 2020-02-07 | 四川轻化工大学 | Building material additive and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013505185A (en) * | 2009-09-21 | 2013-02-14 | シーカ・テクノロジー・アーゲー | Additive for inorganic binder |
| CN104478376A (en) * | 2014-12-29 | 2015-04-01 | 广西启利新材料科技股份有限公司 | Rapid geopolymer-based road repairing material |
| CN105461265A (en) * | 2015-11-23 | 2016-04-06 | 苏州混凝土水泥制品研究院有限公司 | Modified alkali-activated cementing material and preparation method thereof |
| CN110759662A (en) * | 2019-09-27 | 2020-02-07 | 四川轻化工大学 | Building material additive and preparation method thereof |
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Application publication date: 20211224 |