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Surface modification and functionalization method of hollow glass microbeads

A hollow glass microbead and surface modification technology, which is applied in chemical instruments and methods, dyed organosilicon compound treatment, dyed polymer organic compound treatment, etc., can solve the problems of poor functionality and low surface activity of hollow glass microbeads, etc. To achieve the effect of improving interfacial interaction, promoting application and improving adsorption capacity

Inactive Publication Date: 2013-11-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problems of low surface activity and poor functionality of existing hollow glass microspheres, and provides a method for surface modification and functionalization of hollow glass microspheres

Method used

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  • Surface modification and functionalization method of hollow glass microbeads
  • Surface modification and functionalization method of hollow glass microbeads
  • Surface modification and functionalization method of hollow glass microbeads

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Experimental program
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specific Embodiment approach 1

[0022] Specific embodiment one: the method for surface modification and functionalization of hollow glass microspheres in this embodiment is carried out according to the following steps:

[0023] 1. Add the ethanol solution of γ-methacryloxypropyltrimethoxysilane dropwise to the ethanol dispersion system of hollow glass microspheres, stir at room temperature for 36-48 hours, and wash the reacted hollow glass microspheres with ethanol 2 to 4 times, dry for 24 to 36 hours to obtain hollow glass microspheres modified by MPS; wherein the mass ratio of γ-methacryloxypropyl trimethoxysilane to hollow glass microspheres is 1: (1~5 );

[0024] 2. Add the ethanol solution of phenyltrimethoxysilane dropwise to the ethanol dispersion system of hollow glass microspheres, stir at room temperature for 36-48 hours, wash the reacted hollow glass microspheres with ethanol for 2-4 times, and dry them for 24-24 hours. 36h, obtained hollow glass microspheres modified by phenyltrimethoxysilane; w...

specific Embodiment approach 2

[0031] Specific embodiment two: The difference between this embodiment and specific embodiment one is: in the ethanol solution of γ-methacryloxypropyl trimethoxysilane in step 1, γ-methacryloxypropyl trimethoxysilane The mass fraction of base silane is 5-10%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass fraction of phenyltrimethoxysilane in the ethanol solution of phenyltrimethoxysilane in step 2 is 5-10%. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a surface modification and functionalization method of hollow glass microbeads. The surface modification and functionalization method mainly solves the problem that existing hollow glass microbeads are low in surface activity and poor in functionality. The preparation method comprises respectively preparing modified polystyrene (MPS) hollow glass microbeads and phenyltrimethoxysilane-modified hollow glass microbeads, further processing the MPS hollow glass microbeads to obtain an intermediate product, adding the phenyltrimethoxysilane-modified hollow glass microbeads and the intermediate product into concentrated sulfuric acid, reacting for 4-10h with stirring at 30-50 DEG C, and obtaining modified hollow glass microbeads; and adding the modified hollow glass microbeads into Fe3O4 suspension, and stirring to obtain the functionalized hollow glass microbeads. The modification method improves interfacial interaction between the hollow glass microbeads and functional nano particles and improves the adsorption of the hollow glass microbeads to a functional material. Materials obtained by the method are used for the field of light functional materials.

Description

technical field [0001] The invention relates to a modification and functionalization method of hollow glass microspheres. Background technique [0002] Hollow glass microspheres are rich in sources and low in density (0.03~0.7g / cm 3 ), has the advantages of light weight, high melting point and high strength. Especially its closed hollow structure makes the hollow glass microsphere an ideal light material carrier, and has important application value in material weight reduction. However, the low surface activity of hollow glass microspheres leads to a small content of functional materials loaded on the surface, which cannot fully realize the dual characteristics of light weight and functionality of the material. For this reason, it is necessary to carry out surface activation modification on hollow glass microspheres, so as to provide specific functional groups that can adsorb functional materials, and provide guarantee for the preparation of lightweight functional composit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/28C09C3/12C09C3/10C09C3/06
Inventor 徐慧芳张海礁张春华吕通韦华伟宋飞陈秋阳
Owner HARBIN INST OF TECH