Method for preparing millimeter-scale polymer composite microsphere

A technology of composite microspheres and polymers, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of increasing the process of solvent collection and processing, increasing production costs and difficulties, and diffusing the atmosphere, and achieves adjustable density, universal Simple sex, avoid the effect of polluting the environment

Inactive Publication Date: 2018-12-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this method removes the organic solvent, it will spread to the air pollution environment, or it will increase the process of solvent collecti

Method used

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  • Method for preparing millimeter-scale polymer composite microsphere
  • Method for preparing millimeter-scale polymer composite microsphere
  • Method for preparing millimeter-scale polymer composite microsphere

Examples

Experimental program
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Example Embodiment

[0022] Example 1: Polystyrene coated carbon black powder to prepare polymer composite microspheres, the specific formula is shown in Table 1:

[0023] Table 1:

[0024]

[0025] Specific steps are as follows:

[0026] (1) Add 20.00g of styrene to a 50mL beaker, then add 1.05g of polystyrene microsphere particles, stir to dissolve completely, then add 0.40g of azobisisobutyronitrile, stir and mix evenly;

[0027] (2) Add 1.06 g of silica particles (particle size range 70-100 μm) to the mixed solution prepared in step (1), stir and mix well;

[0028] (3) Add 100.00g deionized water and 1.00g PVA1788 to a 250mL three-necked reaction flask with a reflux device, a stirrer and a heating device, stir to dissolve it completely, stop stirring, and add the prepared solution in step (2). The mixed solution was heated to 75 °C for 4 hours at a speed of 300 rpm, and then heated to 85 °C for 1 hour. After cooling, filtration, washing and drying, a non-crosslinked polystyrene-coated car...

Example Embodiment

[0030] Example 2: Polystyrene coated silica particles to prepare cross-linked polymer composite microspheres; the specific formula is shown in Table 2.

[0031] Table 2:

[0032]

[0033] Specific steps are as follows:

[0034] (1) Add 60.00g styrene, 15.00g divinylbenzene, 25.00g polystyrene microsphere particles to a 150mL beaker, stir to dissolve completely, then add 0.75g azobisisobutyronitrile, stir to dissolve completely;

[0035] (2) Add 15.00 g of white carbon black (with a particle size range of 10 μm to 50 μm) into the polymer monomer solution prepared in step (1), and fully stir to mix the materials evenly;

[0036](3) Add 400.00g deionized water and 8.00g PVA1788 to a 1L reaction kettle with a reflux device, agitator and heating device, stir to dissolve it completely, stop stirring, add the mixed solution prepared in step (2), Under the rotating speed of 300 rpm and heating up to 70 °C for 4 hours, then heating up to 85 °C and curing for 1 hour, after cooling...

Example Embodiment

[0038] Example 3: Using waste polystyrene foam board to wrap ferric oxide powder particles to prepare polymer composite microspheres. The specific formula is shown in Table 3;

[0039] table 3:

[0040]

[0041] Specific steps are as follows:

[0042] (1) Take the waste polystyrene foam board, wash it, dry it, crush it into small pieces, add 5.00g vinyl acetate, 30.00g styrene and 35.00g waste polystyrene foam to a 100mL beaker, and stir to make It is completely dissolved, then add 1.05g dibenzoyl peroxide, stir and dissolve completely;

[0043] (2) Add 35.0 g of ferric tetroxide (with a particle size range of 30 μm to 60 μm) into the polymer mixed solution prepared in step (1), and fully stir to mix the materials evenly;

[0044] (3) Add 210.00g of deionized water and 6.3g of PVA1788 to a 1L reactor with a reflux device, a stirrer and a heating device, stir to dissolve it completely, stop stirring, and then add the mixed solution prepared in step (2) , maintained at 30...

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Abstract

The invention discloses a method for preparing a millimeter-scale polymer composite microsphere, and the method comprises dissolving a non-crosslinked polymer in a monomer to obtain a polymer monomersolution, then adding an oil-soluble initiator, finally adding an organic microsphere or inorganic particle, after thorough stirring and even mixing, performing polymerization in an aqueous phase system by suspension polymerization to prepare the millimeter-scale polymer composite microsphere. By selecting of specific polymers and corresponding monomers and adjusting of types or amounts of the specific polymers and the corresponding monomers and types or amounts of coated organic microspheres or inorganic particles, millimeter-scale polymer composite microspheres having different solubility properties, adjustable densities, controllable particle sizes, controllable mechanical strengths, adjustable hydrophilic and hydrophobic properties and controllable diameter ranges of 0.5-2.0mm can be prepared; and the millimeter-scale polymer composite microspheres can be widely used in acid mist suppression, drug carriers, catalyst loading and other fields.

Description

technical field [0001] The invention relates to a preparation method of millimeter-scale polymer composite microspheres, belonging to the field of polymer functional materials. Background technique [0002] Due to their unique structure and properties, composite microspheres have been widely used in the fields of petroleum transportation, drug carrier, catalyst loading, magnetic fluid and target pellets. With the development of science and the needs of production and life, the types of composite microspheres are increasingly abundant. Among them, in order to meet the needs of acid mist inhibitors, drugs, catalyst loading and target pellets, composite microspheres have attracted the attention of scientists. [0003] At present, the methods for preparing composite microspheres mainly include dispersion polymerization, suspension polymerization, membrane emulsification, etc. These methods can finally prepare composite microspheres with special structures and properties (such a...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F212/08C08F218/08C08F212/36C08F2/44C08K3/04C08K3/36C08K3/22C08F2/20B01J13/14
CPCB01J13/14C08F2/20C08F2/44C08F257/02C08F265/06C08K3/04C08K3/22C08K3/36C08K2003/2241C08K2003/2275C08F212/08C08F220/14
Inventor 孙彦琳何江华何艳萍王红祝琳华司甜郭荣鑫
Owner KUNMING UNIV OF SCI & TECH
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