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A kind of calcium carbonate hollow microsphere and preparation method thereof

A calcium carbonate, hollow technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of material performance decline, unfavorable mass production, small specific surface area, etc., to increase specific surface area, improve migration ability, and increase specific surface area. Effect

Active Publication Date: 2020-06-09
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0005] In view of this, the present invention provides a kind of calcium carbonate hollow microsphere and preparation method thereof, solves the problem of using high molecular weight polyacrylic acid to synthesize calcium carbonate solid and hollow microspheres in the prior art, which is unfavorable for industrial problems. Mass production, and because its specific surface area is too small, it leads to technical problems in the performance of materials in the industrial and biomedical fields

Method used

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  • A kind of calcium carbonate hollow microsphere and preparation method thereof
  • A kind of calcium carbonate hollow microsphere and preparation method thereof
  • A kind of calcium carbonate hollow microsphere and preparation method thereof

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Embodiment 1

[0043] This embodiment provides a calcium carbonate hollow microsphere and a preparation method thereof, which specifically includes the following steps:

[0044] 1. Weigh 1.11g anhydrous calcium chloride and 1.06g anhydrous sodium carbonate and dissolve in 100mL deionized water;

[0045] 2. Weigh 0.3g of polyacrylic acid and dissolve it in 50mL of deionized water, divide it into two portions of 25mL each;

[0046] 3. Weigh 261 mg of sodium dodecylbenzene sulfonate and dissolve it in 50 mL of deionized water;

[0047] 4. Add 25mL of polyacrylic acid solution to the calcium chloride and sodium carbonate solutions, and stir for 30 minutes at a speed of 100-300r / min;

[0048] 5. Under vigorous stirring, add sodium dodecylbenzene sulfonate solution to the mixed solution of sodium carbonate and polyacrylic acid, then quickly add the mixed solution of calcium chloride and polyacrylic acid, and stir at low speed for 1 hour at 60°C (low speed is usually controlled At 100-300r / min).

[0049] 6. ...

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Abstract

The invention relates to the field of inorganic functional materials, and discloses a calcium carbonate hollow microsphere and a preparation method thereof. The calcium carbonate hollow microsphere isprepared from raw materials including calcium chloride, polyacrylic acid, sodium carbonate and sodium dodecyl benzene sulfonate by a double decomposition method, wherein the molecular weight of polyacrylic acid is 800-1000. The preparation method can solve the problem in the prior art that solid and hollow microspheres of calcium carbonate are synthesized from macromolecular polyacrylic acid withover-high cost to be disadvantageous to industrial large-scale production; compared with existing solid and hollow microspheres of calcium carbonate, the calcium carbonate hollow microsphere preparedby the method has the advantages that the specific surface area is remarkably increased, the microsphere performance in materials in the aspects of industrial and biomedical fields can be improved.

Description

Technical field [0001] The invention relates to the field of inorganic functional materials, in particular to a hollow calcium carbonate microsphere and a preparation method thereof. Background technique [0002] Hollow microspheres are materials with a unique structure. They specifically refer to spherical materials with an average particle size ranging from nanometers to several micrometers and hollow inside. Compared with solid and hollow microspheres of the same particle size, hollow microspheres have significant advantages such as lower density, larger specific surface area, and the internal cavity can be loaded with other small substances. Therefore, they are used in the fields of electronics, materials science, chemical medicine, etc. There are potential application prospects. [0003] Calcium carbonate is the most common inorganic material. It is ubiquitous in nature. It has the advantages of non-toxic and harmless, low cost, good whiteness, convenient preparation and good...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18
CPCC01F11/18C01P2002/72C01P2004/03C01P2004/34C01P2006/80
Inventor 丁中祥刘金成赵伟张锦宏
Owner GUANGDONG UNIV OF TECH
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