Preparation method of polymer/ZnO/SiO2 nano-composite microspheres

A nanocomposite and polymer technology, applied in the field of nanocomposite microsphere preparation, can solve the problems of easy agglomeration and poor compatibility.

Inactive Publication Date: 2016-08-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that nano ZnO is easy to agglomerate in organic polymer materials, has poor compatibility and is easy to cause photodegr

Method used

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  • Preparation method of polymer/ZnO/SiO2 nano-composite microspheres
  • Preparation method of polymer/ZnO/SiO2 nano-composite microspheres
  • Preparation method of polymer/ZnO/SiO2 nano-composite microspheres

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Embodiment 1

[0039] Weigh 0.1g SDS, 0.1g sodium bicarbonate, 0.1g sodium dihydrogen phosphate, dilute with 90g deionized water, and transfer to a 250ml four-necked bottle equipped with a stirring device, a thermometer and a reflux condensing device (component A); Take 7.5g of styrene monomer, 2.5g of 3-methacrylic acid propyltrimethoxysilane (MEMO), 0.5g of HD, 0.1g of AIBN (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-necked flask equipped with a stirring device, a thermometer and a reflux condensing device, slowly increase the temperature to 70°C, and polymerize for 3 hours to prepare PS microspheres with silicon hydroxylation on the surface, and the morphology of the microspheres is as follows: figure 1 shown.

[0040] Take ou...

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Abstract

The invention belongs to the field of preparation of organic/inorganic nano-composite microspheres, and particularly relates to a preparation method of polymer/ZnO/SiO2 nano-composite microspheres. The preparation method includes the steps that firstly, vinyl monomers and organic siloxane are copolymerized through a miniemulsion polymerization method to prepare polymer microspheres carrying active silicon hydroxyl on the surfaces; then, an organic amine alkali source acts with active silicon hydroxyl on the surfaces of the polymer microspheres to generate nano-ZnO on the surfaces of the polymer microspheres in situ, and polymer/ZnO nano-composite microspheres are prepared; finally, the polymer/ZnO/SiO2 nano-composite microspheres are prepared in situ with a sol-gel method under the induced nucleation effect of nano-ZnO particles on the surfaces of the polymer microspheres. The obtained polymer/ZnO/SiO2 nano-composite microspheres are controllable in particle size and morphology, and solve the problems that nano-ZnO particles are prone to agglomeration and poor in dispersity; the nano-composite microspheres can be applied to the fields of paint, adhesives, ink, plastic, rubber, fibers and the like as multifunctional filler, and can bring excellent mechanical performance, ultraviolet resistance, antistatic performance, durability and the like to the materials.

Description

technical field [0001] The present invention relates to the preparation of organic-inorganic nanocomposite microspheres, in particular to polymer / ZnO / SiO 2 The invention discloses a method for preparing nanocomposite microspheres, belonging to the field of preparing nanocomposite microspheres. Background technique [0002] Nano-zinc oxide (ZnO) is a common inorganic metal oxide, which has the advantages of chemical inertness, good thermal stability, strong ultraviolet absorption ability, and fluorescence. The introduction of nano-ZnO into polymer materials can endow materials with better mechanical properties, UV resistance, heat resistance, etc. However, nano-ZnO is easy to agglomerate in polymer materials, has poor compatibility, and is easy to photodegrade the polymer in contact with its surface, which affects the durability of the material, thus limiting the wide application of nano-ZnO in polymer materials. How to reduce the photocatalytic activity of nano-ZnO while m...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08L25/08
CPCC08J3/128C08J2325/08
Inventor 陆可钰张胜文徐子墨张丹丹王亚东
Owner JIANGNAN UNIV
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