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Method for preparing polymer-zinc oxide nano composite microspheres

A nanocomposite and polymer technology, applied in the preparation of microspheres, microcapsule preparations, coatings, etc., can solve the problems of poor dispersion, uneven nano-ZnO particles, and can not well reflect the performance of nano-ZnO, etc. Good dispersion stability, wide application effect

Inactive Publication Date: 2011-01-26
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method for preparing PS / ZnO nanocomposite microspheres is simple and easy to operate, but the nano-ZnO particles on the surface of the PS / ZnO nanocomposite microspheres PS microspheres are not uniform, and the dispersion is not good, so it is not very good in application. Reflect some properties of nano ZnO

Method used

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  • Method for preparing polymer-zinc oxide nano composite microspheres
  • Method for preparing polymer-zinc oxide nano composite microspheres
  • Method for preparing polymer-zinc oxide nano composite microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Weigh 0.1g of SDS, 0.1g of sodium bicarbonate, 0.1g of sodium dihydrogen phosphate, dilute with 90g of deionized water, and transfer it into a 250mL four-necked bottle equipped with a stirring device, a thermometer and a reflux condensing device (component A); Take 8.5g of styrene (St) monomer, 1.5g of 3-methacryloxypropyltrimethoxysilane (MEMO), 0.5g of HD, 0.1g of AIBN (component B), stir well and transfer into the drop in the funnel. Slowly add component B to component A dropwise at room temperature, and continue to stir for 0.5h to emulsify after the addition. Take out the above mixed components and ultrasonically fine emulsify for 10min. Continue to transfer to a 250mL four-neck flask equipped with a stirring device, a thermometer and a reflux condensing device, slowly raise the temperature to 70°C, and polymerize for 3 hours to prepare PS microspheres with silicon hydroxylation on the surface.

[0038] Take out 5g of the above PS emulsion, dilute it with 40g dei...

Embodiment 2

[0040] Weigh 0.1g SDS, 0.1g sodium bicarbonate (NaHCO 3 ), 0.1g sodium dihydrogen phosphate (NaH 2 PO 4 ), diluted with 90g of deionized water, and transferred to a 250mL four-neck flask equipped with a stirring device, a thermometer and a reflux condensing device (component A); weigh 8.5g of styrene (St) monomer, 1.5g of 3-methyl Acryloxypropyltrimethoxysilane (MEMO), 0.5g HD, 0.1g KPS (component B), stir well and transfer to the dropping funnel. Slowly add component B to component A dropwise at room temperature, and continue to stir for 0.5h to emulsify after the addition. Take out the above mixed components and ultrasonically fine emulsify for 10min. Continue to transfer to a 250mL four-neck flask equipped with a stirring device, a thermometer and a reflux condensing device, slowly raise the temperature to 70°C, and polymerize for 3 hours to prepare PS microspheres with silicon hydroxylation on the surface.

[0041]Take out 5g of the above PS emulsion, dilute it with 40...

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Abstract

The invention discloses a method for preparing polymer-zinc oxide nano composite microspheres and belongs to the technical field of preparation of organic-inorganic nano composite microspheres. The method comprises the following steps of: firstly, copolymerizing a vinyl monomer and organosiloxane to prepare polymer microspheres of which the surfaces are provided with active silicon hydroxyl through miniemulsion polymerization; and secondly, generating nano ZnO on the surfaces of the polymer microspheres by reacting an organic amine alkali source with the active silicon hydroxyl function on the surfaces of the polymer microspheres so as to prepare the polymer / ZnO nano composite microspheres. The prepared polymer / ZnO nano composite microspheres have the advantages of controllable grain size and nano ZnO shape on the surfaces of the polymer microspheres, capacity of overcoming the defects of easy agglomeration and poor dispersibility of nano ZnO grains, and wide application to the fields of UV-resistant coatings, photo-catalytic environment-friendly materials, and the like.

Description

technical field [0001] The invention relates to the preparation of organic-inorganic nanometer composite microspheres, in particular to a preparation method of polymer-ZnO nanometer composite microspheres, and belongs to the technical field of preparation of nanometer composite microspheres. Background technique [0002] Nano-zinc oxide (ZnO) has the ability to absorb, scatter ultraviolet rays and photocatalyze, etc., and has a wide range of applications in the fields of anti-ultraviolet coatings, photocatalytic environmental protection materials, etc. However, nano-ZnO is easy to agglomerate, which is limited in the application process. In recent years, the surface modification of nano-ZnO and the preparation of ZnO nanocomposite structures with organic or inorganic templates have attracted attention. Due to the simple preparation of polystyrene (PS), the surface of PS microspheres is easy to be functionalized, and the particle size is easy to control. It has been reported...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/08C08F212/08C08F230/08C08F2/24C08K3/22B01J13/14C09D125/08C09D7/12
Inventor 张胜文王小蓓赵杰白绘宇江金强刘晓亚
Owner JIANGNAN UNIV
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