CN112851186B - Special auxiliary agent for machine-made sand mortar of coal gangue and preparation method thereof - Google Patents
Special auxiliary agent for machine-made sand mortar of coal gangue and preparation method thereof Download PDFInfo
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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
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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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
- 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
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- 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
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a special auxiliary agent for coal gangue machine-made sand mortar, which comprises the following components in parts by weight: 55-65 parts of an anti-settling thixotropic agent composite material, 4-7 parts of a bleeding inhibitor, 5-10 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 10 ten thousand, 3-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 7.5 ten thousand, 4-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 4 ten thousand, 8-15 parts of an air entraining agent and 8-11 parts of a high-efficiency water reducing agent. Experiments prove that the special auxiliary agent effectively solves the problem of high water absorption of the coal gangue mechanism sand, solves the problems of serious layering degree, unsatisfactory water retention rate and easy hollowing and cracking after being put on a wall of the prepared mortar due to high water absorption of the coal gangue mechanism sand, greatly improves the working performance of the coal gangue mechanism sand mortar, and has wide applicability and social benefit.
Description
Technical Field
The invention relates to a mortar plasticizer and a preparation method thereof, in particular to a special auxiliary agent for machine-made sand mortar of coal gangue and a preparation method thereof. Belongs to the technical field of building materials.
Background
The coal gangue is a kind of tailings produced in the coal dressing process, if the coal gangue is directly treated as waste, on one hand, the environment is polluted, because the sulfur element in the coal gangue can pollute the atmosphere after escaping, or certain influence is caused to the land, thus the environment is greatly influenced; on the other hand, the coal gangue also can cause spontaneous combustion, causing accidents. But through the mineral processing treatment of the coal gangue, the solid waste of the coal gangue can be recycled. Generally, beneficiation processes include crushing, grinding, sorting, fine crushing, and classification. Useful components can be separated out after the coal gangue is crushed and ground. For example, the coal components and pyrite can be separated from the crushed coal gangue, the separated coal can be used as fuel of a boiler, and the pyrite can be used as chemical raw materials. In addition, the coal gangue can also be used for power generation, building materials and the like, so that the coal gangue has more applications.
At present, coal gangue is crushed and sieved to prepare coal gangue machine-made sand with reasonable gradation, and the coal gangue machine-made sand is used in mortar production. However, the water absorption property is determined by the porous property of the coal gangue, the water absorption of the coal gangue usually reaches 2% -10%, the comprehensive utilization is greatly influenced, and the plasticity index of the mortar is seriously influenced, so that the quality and the durability of the mortar are influenced. Therefore, the problem of the layering degree of the coal gangue machine-made sand mortar is solved, the water retention rate is improved, the anti-adhesion tensile strength is enhanced, the problems of sagging and later cracking of the coal gangue machine-made sand mortar and the phenomenon of insufficient plastic stabilizing time of the coal gangue machine-made sand mortar are prevented, and the problem which needs to be solved urgently in the industry is solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a special auxiliary agent for coal gangue machine-made sand mortar and a preparation method thereof. The problems that the prepared mortar is serious in layering degree and unqualified in water retention rate due to large water absorption caused by coal gangue machine-made sand, and the mortar is easy to bulge and crack after being put on a wall and is short in plastic stabilizing time are solved.
The special auxiliary agent for the coal gangue mechanism sand mortar is characterized by comprising the following components in parts by weight: 55-65 parts of an anti-settling thixotropic agent composite material, 4-7 parts of a bleeding inhibitor, 5-10 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 10 ten thousand, 3-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 7.5 ten thousand, 4-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 4 ten thousand, 8-15 parts of an air entraining agent and 8-11 parts of a high-efficiency water reducing agent; the bleeding inhibitor is a product of Shandong Jiangtai building materials science and technology Limited, the air entraining agent is sodium dodecyl sulfate, alkyl sodium sulfonate or sodium alkyl benzene sulfonate, and the high-efficiency water reducing agent is a polycarboxylic acid powder water reducing agent with the water reducing rate of over 25 percent sold in the market; the anti-settling thixotropic agent composite material is prepared by the following method:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of Methyl Acrylate (MA), 3 parts of polyvinyl alcohol (PVA) and 50 parts of distilled water by weight, adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight of 10% sodium hydroxide solution, dropwise adding the sodium hydroxide solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2-4 hours, and standing for 1 hour after dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) and (3) weighing 80 parts by weight of silica fume, namely nano-micro superfine quartz powder, serving as a carrier, uniformly placing the carrier in a fluidized bed, weighing 20 parts by weight of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier silica fume by using the spraying equipment to prepare the anti-settling thixotropic agent composite material.
In the special auxiliary agent for the coal gangue mechanism sand mortar: the special auxiliary agent preferably comprises the following components in parts by weight: 60 parts of an anti-settling thixotropic agent composite material, 5 parts of a bleeding inhibitor, 5-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 10 ten thousand, 6-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 7.5 ten thousand, 4-5 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 4 ten thousand, 10 parts of an air entraining agent and 10 parts of a high-efficiency water reducing agent; the air entraining agent is sodium dodecyl sulfate.
The preparation method of the special auxiliary agent for the coal gangue machine-made sand mortar comprises the following steps:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of Methyl Acrylate (MA), 3 parts of polyvinyl alcohol (PVA) and 50 parts of distilled water by weight, adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight of 10% sodium hydroxide solution, dropwise adding the sodium hydroxide solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2-4 hours, and standing for 1 hour after dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) weighing 80 parts by weight of silica fume, namely nano-micro-grade superfine quartz powder, serving as a carrier, uniformly placing the carrier in a fluidized bed, weighing 20 parts by weight of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier silica fume by using the spraying equipment to prepare the anti-settling thixotropic agent composite material;
(4) and (3) adding 55-65 parts of the anti-settling thixotropic agent composite material prepared in the step (3), 4-7 parts of a bleeding inhibitor, 5-10 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 10 ten thousand, 3-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 7.5 ten thousand, 4-7 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 4 ten thousand, 8-15 parts of an air entraining agent and 8-11 parts of a high efficiency water reducing agent into a mixer to be uniformly mixed, and thus obtaining the special auxiliary agent for the sand mortar produced by the coal gangue machine.
The preparation method of the special auxiliary agent for the coal gangue machine-made sand mortar comprises the following steps: preferably, 60 parts of the prepared anti-settling thixotropic agent composite material, 5 parts of a bleeding inhibitor, 5 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 10 ten thousand, 6 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 7.5 ten thousand, 4 parts of hydroxypropyl methyl cellulose (HPMC) as a thickener with the viscosity of 4 ten thousand, 10 parts of an air entraining agent and 10 parts of a high efficiency water reducing agent are added into a mixer to be uniformly mixed, and the special auxiliary agent for the coal gangue machine-made sand mortar is obtained.
The invention provides a special auxiliary agent for coal gangue machine-made sand mortar and a preparation method thereof. The method utilizes a modified cross-linked grafting technology, a mist-making carrier bearing technology and a multi-component balancing technology to carry out innovative adjustment on each component, changes functions in a targeted manner, simplifies a process route and reduces the production cost. Adding MA, boric acid and PVA in the steps (1) and (2) of the method for dissolving, and then dropwise adding an alkali solution to form a hydrogel film serving as an anti-settling dispersant for later use in a crosslinking manner; the micro silicon powder is selected as the carrier in the step (3) because after the solution obtained in the step (2) is atomized on the micro silicon powder of the carrier, the combination of the micro silicon powder and the solution can obviously improve the tensile bonding strength and the layering degree of the product application, and can also effectively improve the mechanical property; the other components added in the step (4) are mainly used for balancing various indexes of the product and effectively controlling the stability and the application universality of the product.
The experiment proves that: the special auxiliary agent for the coal gangue machine-made sand mortar provided by the invention has the advantages that the layering problem of the coal gangue machine-made sand mortar is obviously improved, the water retention rate is improved, the anti-bonding tensile strength is obviously enhanced, the problems of sagging and later cracking of the coal gangue machine-made sand mortar are prevented, the using amount of the coal gangue machine-made sand can be selected according to actual conditions, and the special auxiliary agent has good stability and wide applicability. The special auxiliary agent for the coal gangue machine-made sand mortar provided by the invention can well solve the problems of serious stratification, unsatisfactory water retention rate and easy hollowing and cracking after being put on a wall of the prepared mortar caused by high water absorption rate brought by coal gangue machine-made sand. The phenomenon of insufficient plastic-stabilizing time of the coal gangue mechanism sand mortar can be effectively inhibited.
The thickening agent and the high-efficiency water reducing agent in the raw materials in the special auxiliary agent for the coal gangue mechanism sand mortar disclosed by the invention are not particularly limited and can be selected according to actual conditions, but the problem of system balance needs to be paid attention to.
In conclusion, the special auxiliary agent for the coal gangue mechanism sand mortar provided by the invention has the following outstanding advantages and effects: the problem of high water absorption of the coal gangue machine-made sand can be effectively solved, the problems of serious stratification, non-conformity of water retention rate and easiness in hollowing and cracking after the prepared mortar is mounted on a wall due to high water absorption caused by the coal gangue machine-made sand are well solved, and the working performance of the coal gangue machine-made sand mortar is greatly improved. According to the invention, by balancing each system, the water consumption of the coal gangue machine-made sand mortar is controlled, the water retention rate is improved, the anti-bonding tensile strength is obviously enhanced, and the problems of sagging and later-stage cracking of the coal gangue machine-made sand mortar are prevented. The usage amount of the coal gangue mechanism sand can be selected according to actual conditions during specific application, the operation is simple and convenient, and the coal gangue mechanism sand has good stability and wide applicability.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the present invention in any way, and any simple modifications, equivalent changes and modifications made to the embodiments according to the technical spirit of the present invention fall within the scope of the technical solution of the present invention.
The processes described in the examples of the present invention are conventional unless otherwise specified, and the starting materials are commercially available from public sources unless otherwise specified.
Example 1:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of Methyl Acrylate (MA), 3 parts of polyvinyl alcohol (PVA) and 50 parts of distilled water in parts by weight (unit: kg), adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight (unit: kg) of 10% sodium hydroxide solution, dropwise adding the solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2 hours, and standing for 1 hour after the dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) weighing 80 parts of micro silicon powder (nano-micro superfine quartz powder) serving as a carrier by weight (unit: kilogram) and uniformly placing the carrier in a fluidized bed, weighing 20 parts of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier micro silicon powder by using the spraying equipment to prepare the anti-settling thixotropic agent composite material;
(4) and (3) adding 60 parts by weight (unit: kg) of the anti-settling thixotropic agent composite material prepared in the step (3), 5 parts by weight of a bleeding inhibitor, 5 parts by weight of a thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 10 ten thousand, 6 parts by weight of a thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 7.5 ten thousand, 4 parts by weight of thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 4 ten thousand, 10 parts by weight of an air entraining agent and 10 parts by weight of a high efficiency water reducing agent into a mixer, and uniformly mixing to obtain the special auxiliary agent for the coal gangue machine-made sand mortar.
The bleeding inhibitor is a product of Shandong Jiangtai building materials science and technology limited, the air-entraining agent is sodium dodecyl sulfate, and the high-efficiency water reducing agent is a polycarboxylic acid powder water reducing agent with the water reducing rate of over 25 percent sold in the market.
Example 2:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of Methyl Acrylate (MA), 3 parts of polyvinyl alcohol (PVA) and 50 parts of distilled water in parts by weight (unit: kg), adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight (unit: kg) of 10% sodium hydroxide solution, dropwise adding the solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2 hours, and standing for 1 hour after the dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) weighing 80 parts of micro silicon powder (nano-micro superfine quartz powder) serving as a carrier by weight (unit: kilogram) and uniformly placing the carrier in a fluidized bed, weighing 20 parts of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier micro silicon powder by using the spraying equipment to prepare the anti-settling thixotropic agent composite material;
(4) and (3) adding 60 parts by weight (unit: kg) of the anti-settling thixotropic agent composite material prepared in the step (3), 5 parts by weight of a bleeding inhibitor, 10 parts by weight of hydroxypropyl methyl cellulose (HPMC) as a thickening agent with the viscosity of 10 ten thousand, 3 parts by weight of hydroxypropyl methyl cellulose (HPMC) as a thickening agent with the viscosity of 7.5 ten thousand, 4 parts by weight of hydroxypropyl methyl cellulose (HPMC) as a thickening agent with the viscosity of 4 ten thousand, 11 parts by weight of an air entraining agent and 10 parts by weight of a high-efficiency water reducing agent into a mixer, and uniformly mixing to obtain the special auxiliary agent for the coal gangue machine-made sand mortar.
The bleeding inhibitor is a product of Shandong Jiangtai building materials science and technology limited, the air-entraining agent is sodium dodecyl sulfate, and the high-efficiency water reducing agent is a polycarboxylic acid powder water reducing agent with the water reducing rate of over 25 percent sold in the market.
Example 3:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of Methyl Acrylate (MA), 3 parts of polyvinyl alcohol (PVA) and 50 parts of distilled water in parts by weight (unit: kg), adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight (unit: kg) of 10% sodium hydroxide solution, dropwise adding the solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2 hours, and standing for 1 hour after the dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) weighing 80 parts of micro silicon powder (nano-micro superfine quartz powder) serving as a carrier by weight (unit: kilogram) and uniformly placing the carrier in a fluidized bed, weighing 20 parts of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier micro silicon powder by using the spraying equipment to prepare the anti-settling thixotropic agent composite material;
(4) and (3) adding 60 parts by weight (unit: kg) of the anti-settling thixotropic agent composite material prepared in the step (3), 5 parts by weight of a bleeding inhibitor, 5 parts by weight of a thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 10 ten thousand, 3 parts by weight of a thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 7.5 ten thousand, 7 parts by weight of thickening agent hydroxypropyl methyl cellulose (HPMC) with the viscosity of 4 ten thousand, 13 parts by weight of an air entraining agent and 10 parts by weight of a high efficiency water reducing agent into a mixer, and uniformly mixing to obtain the special auxiliary agent for the coal gangue machine-made sand mortar.
The bleeding inhibitor is a product of Shandong Jiangtai building materials science and technology limited, the air-entraining agent is sodium dodecyl sulfate, and the high-efficiency water reducing agent is a polycarboxylic acid powder water reducing agent with the water reducing rate of over 25 percent sold in the market.
Example 4:
the experimental test examples for the products prepared in the above examples 1 to 3, in particular for plastering mortars, are as follows:
specific examples of the M10 plastering mortar are as follows:
the cement, coal ash, stone powder, machine-made sand and water used in the comparison verification test are taken from the same raw materials, the test results are compared by dividing the raw materials into two parts, the mixing ratio of the two groups is consistent with the use amount of the base material, the auxiliary agent special for the coal gangue is added into one group, the mortar prepared from the conventional plasticizer is added into the other group, and the comparison indexes of the experimental test are shown in table 1.
TABLE 1 comparison of the results of the experiments of examples 1 to 3 according to the invention with base mortars
| Mortar type | Degree of delamination | Water retention rate | Bond tensile strength ratio | |
| Foundation form | M10 | 50 | 84 | 92 |
| Example 1 | M10 | 5 | 92 | 130 |
| Example 2 | M10 | 8 | 90 | 125 |
| Example 3 | M10 | 8 | 92 | 123 |
Also to be reviewed: the above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (4)
1. The special auxiliary agent for the coal gangue machine-made sand mortar is characterized by comprising the following components in parts by weight: 55-65 parts of an anti-settling thixotropic agent composite material, 4-7 parts of a bleeding inhibitor, 5-10 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 10 ten thousand, 3-7 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 7.5 ten thousand, 4-7 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 4 ten thousand, 8-15 parts of an air entraining agent and 8-11 parts of a high-efficiency water reducing agent; the bleeding inhibitor is a product of Shandong Jiangtai building materials science and technology Limited, the air entraining agent is sodium dodecyl sulfate, alkyl sodium sulfonate or sodium alkyl benzene sulfonate, and the high-efficiency water reducing agent is a polycarboxylic acid powder water reducing agent with the water reducing rate of over 25 percent sold in the market; the anti-settling thixotropic agent composite material is prepared by the following method:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of methyl acrylate, 3 parts of polyvinyl alcohol and 50 parts of distilled water in parts by weight, adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight of 10% sodium hydroxide solution, dropwise adding the sodium hydroxide solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2-4 hours, and standing for 1 hour after dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) and (3) weighing 80 parts by weight of silica fume as a carrier, uniformly placing the carrier in a fluidized bed, weighing 20 parts by weight of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier silica fume by using the high-pressure spraying equipment to prepare the anti-settling thixotropic agent composite material.
2. The special auxiliary agent for the coal gangue mechanism sand mortar of claim 1, which is characterized in that: the special auxiliary agent comprises the following components in parts by weight: 60 parts of an anti-settling thixotropic agent composite material, 5 parts of a bleeding inhibitor, 5-7 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 10 ten thousand, 6-7 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 7.5 ten thousand, 4-5 parts of a thickener hydroxypropyl methyl cellulose with the viscosity of 4 ten thousand, 10 parts of an air entraining agent and 10 parts of a high-efficiency water reducing agent; the air entraining agent is sodium dodecyl sulfate.
3. The preparation method of the special auxiliary agent for the coal gangue mechanism sand mortar in claim 1 comprises the following steps:
(1) respectively weighing 0.15 part of boric acid, 0.1 part of methyl acrylate, 3 parts of polyvinyl alcohol and 50 parts of distilled water in parts by weight, adding the weighed materials into a four-hole bottle provided with a thermometer, a stirrer, a temperature bath kettle and a dropping device, and stirring and dissolving at 85 ℃;
(2) weighing 5 parts by weight of 10% sodium hydroxide solution, dropwise adding the sodium hydroxide solution into the solution prepared in the step (1), keeping the temperature at 85 ℃ in the dropwise adding process, continuously stirring at a constant speed, reacting for 2-4 hours, and standing for 1 hour after dropwise adding is finished to obtain an anti-settling thixotropic agent solution;
(3) weighing 80 parts by weight of silica fume as a carrier, uniformly placing the carrier in a fluidized bed, weighing 20 parts by weight of the anti-settling thixotropic agent solution prepared in the step (2), adding the anti-settling thixotropic agent solution into high-pressure spraying equipment, and uniformly spraying the anti-settling thixotropic agent solution on the carrier silica fume by using the high-pressure spraying equipment to prepare the anti-settling thixotropic agent composite material;
(4) and (3) adding 55-65 parts of the anti-settling thixotropic agent composite material prepared in the step (3), 4-7 parts of a bleeding inhibitor, 5-10 parts of hydroxypropyl methyl cellulose as a thickener with the viscosity of 10 ten thousand, 3-7 parts of hydroxypropyl methyl cellulose as a thickener with the viscosity of 7.5 ten thousand, 4-7 parts of hydroxypropyl methyl cellulose as a thickener with the viscosity of 4 ten thousand, 8-15 parts of an air entraining agent and 8-11 parts of a high-efficiency water reducing agent into a mixer, and uniformly mixing to obtain the special auxiliary agent for the coal gangue machine-made sand mortar.
4. The preparation method of the special auxiliary agent for the coal gangue mechanism sand mortar according to claim 3, is characterized in that: and (4) adding 60 parts of the prepared anti-settling thixotropic agent composite material, 5 parts of a bleeding inhibitor, 5 parts of a thickening agent hydroxypropyl methyl cellulose with the viscosity of 10 ten thousand, 6 parts of thickening agent hydroxypropyl methyl cellulose with the viscosity of 7.5 ten thousand, 4 parts of thickening agent hydroxypropyl methyl cellulose with the viscosity of 4 ten thousand, 10 parts of an air entraining agent and 10 parts of a high-efficiency water reducing agent into a mixer, and uniformly mixing to obtain the special auxiliary agent for the coal gangue machine-made sand mortar.
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| CN104292951A (en) * | 2014-09-26 | 2015-01-21 | 锐展(铜陵)科技有限公司 | Special filler for durable high-hardness automobile paints and preparation method thereof |
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