CN114988759B - Diatomite functional material and preparation method thereof - Google Patents
Diatomite functional material and preparation method thereof Download PDFInfo
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- CN114988759B CN114988759B CN202210746230.7A CN202210746230A CN114988759B CN 114988759 B CN114988759 B CN 114988759B CN 202210746230 A CN202210746230 A CN 202210746230A CN 114988759 B CN114988759 B CN 114988759B
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- diatomite
- functional material
- acrylic acid
- maleic acid
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
-
- 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
Abstract
The invention provides a diatomite functional material and a preparation method thereof, and belongs to the technical field of diatomite materials. The functional material comprises the following components in parts by weight: 100 parts of diatomite, 20-60 parts of acrylic acid-maleic acid copolymer, 10-20 parts of silicon oxide, 5-15 parts of aluminum oxide and 5-10 parts of aluminum phosphate. The functional material can be formed in 4-10 minutes and solidified into a product in 12-24 hours, and the diatomite functional material with the thickness of 1-10 mm can be formed at the thinnest, wherein the maximum compressive strength can reach 20MPa, and the minimum filtering precision can reach 0.01 micrometer.
Description
Technical Field
The invention belongs to the technical field of diatomite materials, and particularly relates to a diatomite functional material and a preparation method thereof.
Background
Diatomaceous earth has been widely used worldwide because of its unique natural microporous structure and reliable safety. The existing diatomite filter plate material or heat-insulating fireproof material is prepared by stirring, mixing and pressing diatomite and an adhesive (inorganic adhesive, organic adhesive, cement, aqueous adhesive, clay and the like) to form, and calcining and shaping at high temperature. The manufacturing process is complex, the production period is long, the drying and the calcination are carried out in the production process, and the manufacturing period is about 1 month. High temperature calcination also requires a significant amount of energy.
Disclosure of Invention
The invention aims to solve the problems that the existing diatomite functional material needs long drying time, high-temperature calcination energy consumption, long manufacturing period and low production efficiency in the processing process. It is difficult to form a larger effective filtration area, and a diatomite functional material and a preparation method thereof are provided.
The invention firstly provides a diatomite functional material which comprises the following components in parts by weight:
100 parts of diatomite, 20-60 parts of acrylic acid-maleic acid copolymer, 10-20 parts of silicon oxide, 5-15 parts of aluminum oxide and 5-10 parts of aluminum phosphate.
Preferably, the diatomite functional material comprises the following components in parts by weight:
100 parts of diatomite, 30-50 parts of acrylic acid-maleic acid copolymer, 10-15 parts of silicon oxide, 10-15 parts of aluminum oxide and 5-7 parts of aluminum phosphate.
Preferably, the diatomite functional material comprises the following components in parts by weight:
100 parts of diatomite, 40 parts of acrylic acid-maleic acid copolymer, 15 parts of silicon oxide, 10 parts of aluminum oxide and 7 parts of aluminum phosphate.
Preferably, siO in the diatomite 2 The content is more than or equal to 80 percent, and the granularity is 1-100 microns.
Preferably, the diatomite is calcined diatomite or fluxing calcined diatomite.
The invention also provides a preparation method of the diatomite functional material, which comprises the following steps:
step one: pulverizing and mixing all the powdery raw materials by airflow according to the proportion, adding an acrylic acid-maleic acid copolymer, performing ball milling and mixing, and then placing into a mould for compression molding to obtain a molded body;
step two: solidifying and molding the molded body for 4-10min, and then standing for 12-24h;
step three: and (3) shaping the formed body after standing in the step (II) to obtain the diatomite functional material.
Preferably, the molding time of the second step is 7min.
Preferably, the standing time of the second step is 18 hours.
The beneficial effects of the invention are that
The diatomite functional material is prepared with diatomite, acrylic acid-maleic acid copolymer, silica, alumina, aluminum phosphate and other material and through mixing, forming, shaping, etc. In the preparation process, the material does not need high-temperature calcination, and overcomes the defects of complex production and processing technology, long manufacturing period, high energy consumption of high-temperature calcination in the production process and small filtration area of inorganic filter material per unit volume of the existing filter material. The functional material of the invention can be formed in 4-10 minutes and solidified into a product in 12-24 hours, and the diatomite functional material with the thickness of 1-10 mm can be formed at the minimum. The maximum compressive strength can reach 20MPa. The filter precision is as high as 0.01 micron at the minimum, and because of high porosity, the filter has the advantages of fire prevention, heat preservation, natural environmental protection and safety, sound insulation and absorption, air humidity adjustment, capability of being processed into various shapes through a die according to the needs of users, high filter precision, difficult breakage and long service period when used by a matched filter. The formed filter plate is thinner, can reach 1 millimeter, has good flatness, is not easy to deform, increases the filter area of unit volume, and has the filter flux which is 20 times of that of the original filter ceramic. It is widely used in various industries such as wine, condiment liquid filtration, water purification, pharmacy, syrup, petrochemical industry, etc. The artistic modeling and pattern is printed out by mechanical or manual carving and is used for different scenes, such as indoor background wall, living room, bedroom, various museums, exhibition hall, office writing room, conference room and music hall. The product can be beautiful in environment, and has the functions of heat preservation, fire prevention, sound insulation, sound absorption, air temperature regulation, air purification and the like. The product reaches the food hygiene standard, and cannot pollute and harm the ambient air.
In addition, the invention has the advantages of less components, low cost, abundant raw material sources, simple manufacturing process, convenient use, wide application range, large filtering flow, high precision, good effect, stable chemical property, high pressure resistance and corrosion resistance, capability of being cleaned, repeatedly used, long service life and the like, and the prepared product SiO 2 The content is more than 60 percent, and the porosity is more than 50 percent.
Detailed Description
The invention will be described in further detail with reference to the following specific examples, in which the raw materials involved are all commercially available.
Example 1
A diatomaceous earth functional material comprising:
100 parts of diatomite, 20 parts of acrylic acid-maleic acid copolymer, 10 parts of silicon oxide, 5 parts of aluminum oxide and 5 parts of aluminum phosphate.
A preparation method of diatomite functional material comprises the following steps:
step one: pulverizing and mixing all the powdery raw materials by airflow according to the proportion, adding an acrylic acid-maleic acid copolymer, performing ball milling and mixing, and then placing into a mould for compression molding to obtain a molded body;
step two: solidifying and molding the molded body for 4min, and then standing for 12h;
step three: shaping the formed body after standing in the second step to obtain the diatomite functional material.
Diatomite functional material SiO prepared in example 1 2 The content is 76%, the porosity is more than 70%, and the compressive strength is 5MPa.
Example 2
A diatomaceous earth functional material comprising:
100 parts of calcined diatomite, 40 parts of acrylic acid-maleic acid copolymer, 15 parts of silicon oxide, 15 parts of aluminum oxide and 7 parts of aluminum phosphate.
The calcined diatomite is prepared by taking fine particles (1-50 microns) of suspension on diatomite by a water-soluble sedimentation method.
A preparation method of diatomite functional material comprises the following steps:
step one: the preparation method comprises the steps of crushing and mixing all powdery raw materials through air flow, adding acrylic acid-maleic acid copolymer, ball-milling and mixing, and then placing into a die for compression molding to obtain a molded body;
step two: solidifying and molding the molded body for 4min, and then standing for 18h;
step three: shaping the formed body after standing in the second step to obtain the diatomite functional material.
Diatomite functional material SiO prepared in example 2 2 The content is 65%, the porosity is more than 50%, and the compressive strength is 1MPa. The diatomite is carefully selected, so that the filtering precision is high, and can reach 0.01 micron.
Example 3
A diatomaceous earth functional material comprising:
100 parts of fluxing calcined diatomite, 50 parts of acrylic acid-maleic acid copolymer, 15 parts of silicon oxide, 15 parts of aluminum oxide and 7 parts of aluminum phosphate.
A preparation method of diatomite functional material comprises the following steps:
step one: the preparation method comprises the steps of crushing and mixing all powdery raw materials through air flow, adding acrylic acid-maleic acid copolymer, ball-milling and mixing, and then placing into a die for compression molding to obtain a molded body;
step two: solidifying and molding the molded body for 4min, and then standing for 24h;
step three: shaping the formed body after standing in the second step to obtain the diatomite functional material.
Diatomite functional material SiO prepared in example 4 2 The content is 61%, the porosity is more than 60%, and the compressive strength is 20MPa.
Claims (8)
1. The diatomite functional material is characterized by being prepared from the following raw materials in parts by weight:
100 parts of diatomite, 20-60 parts of acrylic acid-maleic acid copolymer, 10-20 parts of silicon oxide, 5-15 parts of aluminum oxide and 5-10 parts of aluminum phosphate.
2. The diatomite functional material as set forth in claim 1, which is characterized by being prepared from the following raw materials in parts by weight:
100 parts of diatomite, 30-50 parts of acrylic acid-maleic acid copolymer, 10-15 parts of silicon oxide, 10-15 parts of aluminum oxide and 5-7 parts of aluminum phosphate.
3. The diatomite functional material as set forth in claim 1, which is characterized by being prepared from the following raw materials in parts by weight:
100 parts of diatomite, 40 parts of acrylic acid-maleic acid copolymer, 15 parts of silicon oxide, 10 parts of aluminum oxide and 7 parts of aluminum phosphate.
4. A diatomite functional material according to any one of claims 1-3, wherein said diatomite contains more than or equal to 80% of SiO2 and has a particle size of 1-100 microns.
5. A diatomite functional material according to any of claims 1-3, wherein said diatomite is calcined diatomite or fluxing calcined diatomite.
6. The method for preparing the diatomite functional material as set forth in claim 1, comprising:
step one: pulverizing and mixing all the powdery raw materials by airflow according to the proportion, adding an acrylic acid-maleic acid copolymer, performing ball milling and mixing, and then placing into a mould for compression molding to obtain a molded body;
step two: solidifying and molding the molded body for 4-10min, and then standing for 12-24h;
step three: and (3) shaping the formed body after standing in the step (II) to obtain the diatomite functional material.
7. The method for preparing a diatomite functional material as set forth in claim 6, wherein said molding time of said second step is 7min.
8. The method for preparing a diatomite functional material as set forth in claim 6, wherein said standing time in said second step is 18 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210746230.7A CN114988759B (en) | 2022-06-29 | 2022-06-29 | Diatomite functional material and preparation method thereof |
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| CN202210746230.7A CN114988759B (en) | 2022-06-29 | 2022-06-29 | Diatomite functional material and preparation method thereof |
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| CN114988759A CN114988759A (en) | 2022-09-02 |
| CN114988759B true CN114988759B (en) | 2023-05-05 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046684A (en) * | 1989-04-24 | 1990-11-07 | 四平硅藻土过滤器材联合厂 | With diatomite is the microporous filtering ceramic of matrix |
| WO2010036763A1 (en) * | 2008-09-26 | 2010-04-01 | World Minerals Inc. | Diatomaceous earth products containing reduced soluble metal levels, processes for reducing soluble metal levels in diatomaceous earth products, and methods of using the same |
| WO2015157185A1 (en) * | 2014-04-07 | 2015-10-15 | Imerys Filtration Minerals, Inc. | Bop water filter cartridge |
| CN103951401B (en) * | 2014-04-08 | 2015-08-19 | 安徽省亚欧陶瓷有限责任公司 | A kind of can the ceramic tile producing magnetic line of force and preparation method thereof |
| CN110372412A (en) * | 2019-08-28 | 2019-10-25 | 邱连旺 | A kind of diatomite functional material and preparation method thereof |
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