CN114538881A - Modified plant fiber-mineral composite soil improvement material and preparation method thereof - Google Patents
Modified plant fiber-mineral composite soil improvement material 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
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
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- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- 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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2103/00—Civil engineering use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a modified plant fiber-mineral composite soil improvement material, which comprises the following components in percentage by weight: 65% -75% of a basic A component, 10% -30% of a basic B component, 0.1% -0.3% of a stabilizer and 5% -15% of a structure regulator, and the invention also discloses a preparation method of the modified plant fiber-mineral composite soil improvement material, which comprises the following steps: modifying and acidifying a structure regulator, modifying and polymerizing the structure regulator, modifying and passivating the structure regulator, selecting materials, crushing, mixing and grinding, and compounding for later use; the content of P and W in the sludge dredged in the Xian river channel by using the modified plant fiber-mineral composite soil improvement material is obviously reduced, the soil infiltration rate is greatly improved, the cation exchange capacity is rapidly increased, the salt content of the soil is obviously reduced, and the content index of the leaching concentration of heavy metal is greatly reduced.
Description
Technical Field
The invention relates to the technical field of soil improvement material preparation, in particular to a modified plant fiber-mineral composite soil improvement material and a preparation method thereof.
Background
With the gradual achievement of the national 'double-carbon' target, the resource recycling of fine particle wastes (silt, mucky soil, sludge, desert sand, mine tailings and the like) is gradually and fully realized. Due to the large-scale river and lake renovation engineering, port and channel construction and maintenance engineering in recent years, if a large amount of dredging sludge is improperly disposed, serious environmental problems of land occupation, river pollution, influence on the ecological environment of a water body and the like are caused.
In the prior art, a treatment method of cementation and solidification is used, toxic and harmful substances in soft soil can be sealed and fixed in a crystal structure, sludge is modified into soil meeting the requirements of engineering, the structure of the soil is subjected to irreversible change, and the planting performance is lost due to overhigh alkalinity. By using the soil improvement treatment mode, the moisture in the sludge can be controlled in a reasonable range, a loose soil structure is formed, and the soil is restored into planting soil with good planting property.
However, the task of resource recycling of fine particle wastes (silt, mucky soil, sludge, desert sand, mine tailings and the like) in China is severe, and the traditional cementing and curing treatment mode has overlarge disturbance on the soil structure and damages the ecological environment of the original soil resources.
Disclosure of Invention
The invention aims to provide a modified plant fiber-mineral composite soil improvement material and a preparation method thereof, and aims to solve the problems that the traditional cementing and curing treatment mode proposed in the background art disturbs the soil structure too much and destroys the ecological environment of the original soil resources.
In order to achieve the purpose, the invention provides the following technical scheme: a modified plant fiber-mineral composite soil improvement material comprises the following components in percentage by weight: 65-75% of basic A component, 10-30% of basic B component, 0.1-0.3% of stabilizer and 5-15% of structure regulator.
Preferably, the base a component is: any one or two of silicon-aluminum-based industrial waste residues of granulated blast furnace slag, fly ash, silica fume, metakaolin, bentonite and bottom ash of a high-temperature power plant.
Preferably, the base B component is: any two or three of sodium silicate, cement clinker and gypsum.
Preferably, the stabilizer is: any one or two of polyvinyl alcohol, chitosan quaternary ammonium salt, carboxymethyl chitosan, isobutyl chitosan and hydroxypropyl chitosan.
Preferably, the structure modifier is: the natural plant fiber is subjected to acidification treatment and polymerization reaction, and then is subjected to surface modification by sodium carboxymethyl cellulose and aluminum hydroxide.
Preferably, the plant fiber is: any one or two of natural plant fibers such as corn straws, sisal, jute, coconut shells, bamboo, bagasse, banana stems, corncobs, pineapple residues and the like.
A method for preparing a modified plant fiber-mineral composite soil improvement material as described above, comprising the steps of:
modifying and acidifying with a structure regulator, namely putting natural plant fibers into a reaction kettle, adding dilute hydrochloric acid with the concentration of 2.3 per mill, heating the reaction kettle to 100 ℃, reacting for 24 hours, cooling at room temperature, performing suction filtration, and washing with deionized water for multiple times until the pH is neutral; then putting the product into a drying oven at 60 ℃ for drying and storing for later use to obtain acidified cellulose;
carrying out modified polymerization reaction by using a structure regulator, namely adding acrylic acid and sodium hydroxide into a reaction kettle in a ratio of 1: 2; then respectively adding the acidified cellulose, acrylamide, potassium persulfate, ammonium persulfate, aluminum hydroxide and sodium carboxymethylcellulose into the solution in the reaction kettle in proportion, adding the acidified cellulose, acrylamide, potassium persulfate and ammonium persulfate in a ratio of 15:15:3.5:3.5, and uniformly stirring the materials by using a stirring rod; adding aluminum hydroxide and sodium carboxymethylcellulose in a ratio of 1: 2; finally, a stirrer and a nitrogen guide pipe are arranged in the reaction kettle, the mixture is continuously stirred and slowly heated to 70 ℃ under the protection of nitrogen, the heating is stopped when the product becomes more viscous, then the obtained polymer sample is cut into pieces by scissors and is placed in a drying oven at 60 ℃ for drying and standby;
modifying and passivating the structure regulator, after the polymerization reaction is finished, washing the structure regulator for multiple times by using deionized water to remove unreacted monomers, and then carrying out freeze drying to finally obtain the structure regulator;
selecting materials for crushing, selecting different minerals in the basic component A and the basic component B, respectively crushing the minerals in a crusher, screening the minerals by using a sieve with the aperture of 20mm, returning oversize products to be crushed again, and reserving undersize products for later use;
mixing and grinding, drying the raw materials, and grinding the dried basic component A and the dried basic component B until the specific surface area is more than or equal to 280m2Kg, obtaining mineral powder; mixing the mineral powder and the stabilizer according to a certain proportion, putting the mixture into a pulverizer to perform secondary powder grinding, and grinding the mixture until the residue is 5 percent of the residue screened by 200 meshes;
and (3) compounding for later use, namely mixing the powder material and the structure regulator according to a certain proportion, compounding, and storing for later use.
Compared with the prior art, the invention has the beneficial effects that: the soil improvement material takes modified plant fiber and silicon-aluminum based minerals as main raw materials, has no toxicity to natural soil, and has low cost and wide source; the soil improving material compounds the structural advantages of the modified plant fiber and the reactive activity advantages of the silicon-aluminum based mineral, and after the soil improving material is added, inert fine particles are promoted to form a loose structure body with certain consolidation strength, so that the stability and the plantability of a soil body after improvement are ensured; the content of P and W in the sludge dredged in the Xian river channel by using the modified plant fiber-mineral composite soil improvement material is obviously reduced, the soil infiltration rate is greatly improved, the cation exchange capacity is rapidly increased, the salt content of the soil is obviously reduced, and the content index of the leaching concentration of heavy metal is greatly reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The modified plant fiber-mineral composite soil improvement material comprises the following components in percentage by weight:
a method for preparing a modified plant fiber-mineral composite soil improvement material as described above, comprising the steps of:
modifying and acidifying with a structure regulator, namely putting natural plant fibers into a reaction kettle, adding dilute hydrochloric acid with the concentration of 2.3 per mill, heating the reaction kettle to 100 ℃, reacting for 24 hours, cooling at room temperature, performing suction filtration, and washing with deionized water for multiple times until the pH is neutral; then putting the product into a drying oven at 60 ℃ for drying and storing for later use to obtain acidified cellulose;
carrying out a polymerization reaction modified by a structure regulator, and adding acrylic acid and sodium hydroxide into a reaction kettle in a ratio of 1: 2; then respectively adding the acidified cellulose, acrylamide, potassium persulfate, ammonium persulfate, aluminum hydroxide and sodium carboxymethylcellulose into the solution in the reaction kettle in proportion, adding the acidified cellulose, acrylamide, potassium persulfate and ammonium persulfate in a ratio of 15:15:3.5:3.5, and uniformly stirring the materials by using a stirring rod; adding aluminum hydroxide and sodium carboxymethylcellulose in a ratio of 1: 2; finally, a stirrer and a nitrogen guide pipe are arranged in the reaction kettle, the mixture is continuously stirred and slowly heated to 70 ℃ under the protection of nitrogen, the heating is stopped when the product becomes more viscous, then the obtained polymer sample is cut into pieces by scissors and is placed in a drying oven at 60 ℃ for drying and standby;
modifying and passivating the structure regulator, after the polymerization reaction is finished, washing the structure regulator for multiple times by using deionized water to remove unreacted monomers, and then carrying out freeze drying to finally obtain the structure regulator;
selecting materials for crushing, selecting different minerals in the basic component A and the basic component B, respectively crushing the minerals in a crusher, screening the minerals by using a sieve with the aperture of 20mm, returning oversize products to be crushed again, and reserving undersize products for later use;
mixing and grinding, drying the raw materials, and grinding the dried basic component A and the dried basic component B until the specific surface area is more than or equal to 280m2Kg, obtaining mineral powder; mixing the mineral powder and the stabilizer according to a certain proportion, and then placing the mixture into a pulverizer to perform secondary powder grinding until the 200-mesh screen residue is less than or equal to 1%;
and (3) compounding for later use, namely mixing the powder material and the structure regulator according to a certain proportion, compounding, and storing for later use.
Example two
The invention provides a technical scheme that: a modified plant fiber-mineral composite soil improvement material comprises the following components in percentage by weight:
a method for preparing a modified plant fiber-mineral composite soil improvement material as described above, comprising the steps of:
modifying and acidifying with a structure regulator, namely putting natural plant fibers into a reaction kettle, adding dilute hydrochloric acid with the concentration of 2.3 per mill, heating the reaction kettle to 100 ℃, reacting for 24 hours, cooling at room temperature, performing suction filtration, and washing with deionized water for multiple times until the pH is neutral; then putting the product into a drying oven at 60 ℃ for drying and storing for later use to obtain acidified cellulose;
carrying out modified polymerization reaction by using a structure regulator, namely adding acrylic acid and sodium hydroxide into a reaction kettle in a ratio of 1: 2; then respectively adding the acidified cellulose, acrylamide, potassium persulfate, ammonium persulfate, aluminum hydroxide and sodium carboxymethylcellulose into the solution in the reaction kettle in proportion, adding the acidified cellulose, acrylamide, potassium persulfate and ammonium persulfate in a ratio of 15:15:3.5:3.5, and uniformly stirring the materials by using a stirring rod; adding aluminum hydroxide and sodium carboxymethylcellulose in a ratio of 1: 2; finally, a stirrer and a nitrogen guide pipe are arranged in the reaction kettle, the mixture is continuously stirred and slowly heated to 70 ℃ under the protection of nitrogen, the heating is stopped when the product becomes more viscous, then the obtained polymer sample is cut into pieces by scissors and is placed in a drying oven at 60 ℃ for drying and standby;
modifying and passivating the structure regulator, after the polymerization reaction is finished, washing the structure regulator for multiple times by using deionized water to remove unreacted monomers, and then carrying out freeze drying to finally obtain the structure regulator;
selecting materials for crushing, selecting different minerals in the basic component A and the basic component B, respectively crushing the minerals in a crusher, screening the minerals by using a sieve with the aperture of 20mm, returning oversize products to be crushed again, and reserving undersize products for later use;
mixing and grinding, drying the raw materials, and grinding the dried basic component A and the dried basic component B until the specific surface area is more than or equal to 280m2Kg, obtaining mineral powder; mixing the mineral powder and the stabilizer according to a certain proportion, and then placing the mixture into a pulverizer to perform secondary powder grinding until the 200-mesh screen residue is less than or equal to 3%;
and (3) compounding for later use, namely mixing the powder material and the structure regulator according to a certain proportion, compounding, and storing for later use.
EXAMPLE III
The invention provides a technical scheme that: a modified plant fiber-mineral composite soil improvement material comprises the following components in percentage by weight:
a method for preparing a modified plant fiber-mineral composite soil improvement material as described above, comprising the steps of:
modifying and acidifying with a structure regulator, namely putting natural plant fibers into a reaction kettle, adding dilute hydrochloric acid with the concentration of 2.3 per mill, heating the reaction kettle to 100 ℃, reacting for 24 hours, cooling at room temperature, performing suction filtration, and washing with deionized water for multiple times until the pH value is neutral; then putting the product into a drying oven at 60 ℃ for drying and storing for later use to obtain acidified cellulose;
carrying out modified polymerization reaction by using a structure regulator, namely adding acrylic acid and sodium hydroxide into a reaction kettle in a ratio of 1: 2; then respectively adding the acidified cellulose, acrylamide, potassium persulfate, ammonium persulfate, aluminum hydroxide and sodium carboxymethylcellulose into the solution in the reaction kettle in proportion, adding the acidified cellulose, acrylamide, potassium persulfate and ammonium persulfate in a ratio of 15:15:3.5:3.5, and uniformly stirring the materials by using a stirring rod; adding aluminum hydroxide and sodium carboxymethylcellulose in a ratio of 1: 2; finally, a stirrer and a nitrogen guide pipe are arranged in the reaction kettle, the mixture is continuously stirred and slowly heated to 70 ℃ under the protection of nitrogen, the heating is stopped when the product becomes more viscous, then the obtained polymer sample is cut into pieces by scissors and is placed in a drying oven at 60 ℃ for drying and standby;
modifying and passivating the structure regulator, after the polymerization reaction is finished, washing the structure regulator for multiple times by using deionized water to remove unreacted monomers, and then carrying out freeze drying to finally obtain the structure regulator;
selecting materials for crushing, selecting different minerals in the basic component A and the basic component B, respectively crushing the minerals in a crusher, screening the minerals by using a sieve with the aperture of 20mm, returning oversize products to be crushed again, and reserving undersize products for later use;
mixing and grinding, drying the raw materials, and grinding the dried basic component A and the dried basic component B until the specific surface area is more than or equal to 280m2Kg, obtaining mineral powder; mixing the mineral powder and the stabilizer according to a certain proportion, and then placing the mixture into a pulverizer to perform secondary powder grinding until the 200-mesh screen residue is less than or equal to 1%;
and (3) compounding for later use, namely mixing the powder material and the structure regulator according to a certain proportion, compounding, and storing for later use.
Comparative example 1
The sludge is dredged in the west-An river.
The modified plant fiber-mineral composite soil improvement materials prepared in the three groups of examples in different proportions are respectively mixed with the dredging sludge of the Xian river channel in the first comparative example (the physicochemical indexes are shown in the following table), and the mixing amount is 5% of the total material mass. After uniform stirring, placing the mixture into a test mould with the thickness of 70.7 multiplied by 70.7mm, vibrating and forming, removing the mould after 1 day, placing the mould under standard curing conditions for curing for 7 days, and respectively detecting the physicochemical indexes, the vegetation indexes and the heavy metal leaching toxicity indexes of the modified soil of the three ingredients, wherein the specific experimental contrast values are shown in the following table.
Modified soil test table of each embodiment
The comparison of the tables shows that the content of P and W in the dredging sludge of the Xian river channel using the modified plant fiber-mineral composite soil improvement material is obviously reduced, the soil infiltration rate is greatly improved, the cation exchange capacity is rapidly increased, the salt content of the soil is obviously reduced, and the content index of the leaching concentration of heavy metal is greatly reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A modified plant fiber-mineral composite soil improvement material, which is characterized in that; the formula of the soil improvement material comprises the following components: 65-75% of basic A component, 10-30% of basic B component, 0.1-0.3% of stabilizer and 5-15% of structure regulator.
2. The modified plant fiber-mineral composite soil improvement material according to claim 1, wherein: the basic component A is as follows: any one or two of silicon-aluminum-based industrial waste residues of granulated blast furnace slag, fly ash, silica fume, metakaolin, bentonite and bottom ash of a high-temperature power plant.
3. The modified plant fiber-mineral composite soil improvement material according to claim 1, wherein: the basic component B comprises the following components: any two or three of sodium silicate, cement clinker and gypsum.
4. The modified plant fiber-mineral composite soil improvement material according to claim 1, wherein: the stabilizer is as follows: one or two of polyvinyl alcohol, chitosan quaternary ammonium salt, carboxymethyl chitosan, isobutyl chitosan and hydroxypropyl chitosan.
5. The modified plant fiber-mineral composite soil improvement material according to claim 1, wherein: the structure regulator is as follows: the natural plant fiber is subjected to acidification treatment and polymerization reaction, and then is subjected to surface modification by sodium carboxymethyl cellulose and aluminum hydroxide.
6. The modified plant fiber-mineral composite soil improvement material according to claim 5, wherein: the plant fiber is as follows: any one or two of natural plant fibers such as corn straws, sisal, jute, coconut shells, bamboo, bagasse, banana stems, corncobs, pineapple residues and the like.
7. A method for preparing a modified plant fiber-mineral composite soil amendment according to any one of claims 1 to 6, wherein: the preparation method comprises the following steps:
modifying and acidifying with a structure regulator, namely putting natural plant fibers into a reaction kettle, adding dilute hydrochloric acid with the concentration of 2.3 per mill, heating the reaction kettle to 100 ℃, reacting for 24 hours, cooling at room temperature, performing suction filtration, and washing with deionized water for multiple times until the pH is neutral; then putting the product into a drying oven at 60 ℃ for drying and storing for later use to obtain acidified cellulose;
carrying out modified polymerization reaction by using a structure regulator, namely adding acrylic acid and sodium hydroxide into a reaction kettle in a ratio of 1: 2; then respectively adding the acidified cellulose, acrylamide, potassium persulfate, ammonium persulfate, aluminum hydroxide and sodium carboxymethylcellulose into the solution in the reaction kettle in proportion, adding the acidified cellulose, acrylamide, potassium persulfate and ammonium persulfate in a ratio of 15:15:3.5:3.5, and uniformly stirring the materials by using a stirring rod; adding aluminum hydroxide and sodium carboxymethylcellulose in a ratio of 1: 2; finally, a stirrer and a nitrogen guide pipe are arranged in the reaction kettle, the mixture is continuously stirred and slowly heated to 70 ℃ under the protection of nitrogen, the heating is stopped when the product becomes more viscous, then the obtained polymer sample is cut into pieces by scissors and is placed in a drying oven at 60 ℃ for drying and standby;
modifying and passivating the structure regulator, after the polymerization reaction is finished, washing the structure regulator for multiple times by using deionized water to remove unreacted monomers, and then carrying out freeze drying to finally obtain the structure regulator;
selecting materials for crushing, selecting different minerals in the basic component A and the basic component B, respectively crushing the minerals in a crusher, screening the minerals by using a sieve with the aperture of 20mm, returning oversize products to be crushed again, and reserving undersize products for later use;
mixing and grinding, drying the raw materials, and grinding the dried basic component A and the dried basic component B until the specific surface area is more than or equal to 280m2Kg, obtaining mineral powder; mixing the mineral powder and the stabilizer according to a certain proportion, putting the mixture into a pulverizer to perform secondary powder grinding, and grinding the mixture until the sieved residue of 200 meshes is 5 percent;
and (3) compounding for later use, namely mixing the powder material and the structure regulator according to a certain proportion, compounding, and storing for later use.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4296245A1 (en) * | 2022-06-16 | 2023-12-27 | Treezo New Material Technology Group Co., Ltd. | Straw aerogel flame-retardant insulation board and preparation method thereof |
| CN118125781A (en) * | 2024-05-08 | 2024-06-04 | 湖南国发控股有限公司 | Light heat-insulating material prepared from waste incineration fly ash and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019137763A (en) * | 2018-02-09 | 2019-08-22 | 太平洋セメント株式会社 | Additive material for soil granulation |
| CN111040772A (en) * | 2019-12-16 | 2020-04-21 | 安徽云之数科技有限公司 | Organic-inorganic composite agriculture and forestry water-retaining agent and preparation method thereof |
-
2022
- 2022-02-15 CN CN202210137315.5A patent/CN114538881A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019137763A (en) * | 2018-02-09 | 2019-08-22 | 太平洋セメント株式会社 | Additive material for soil granulation |
| CN111040772A (en) * | 2019-12-16 | 2020-04-21 | 安徽云之数科技有限公司 | Organic-inorganic composite agriculture and forestry water-retaining agent and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4296245A1 (en) * | 2022-06-16 | 2023-12-27 | Treezo New Material Technology Group Co., Ltd. | Straw aerogel flame-retardant insulation board and preparation method thereof |
| CN118125781A (en) * | 2024-05-08 | 2024-06-04 | 湖南国发控股有限公司 | Light heat-insulating material prepared from waste incineration fly ash and preparation method thereof |
| CN118125781B (en) * | 2024-05-08 | 2024-07-26 | 湖南国发控股有限公司 | Light heat-insulating material prepared from waste incineration fly ash and preparation method thereof |
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