Preparation method of magnetic polymer inorganic composite micro-sphere

A technology of composite microspheres and polymers, which is applied in the field of preparation of magnetic polymer inorganic composite microspheres, can solve the problems of complex magnetic composite microspheres, achieve light density, simplify the process, and reduce the density
CN101549270AInactive Publication Date: 2009-10-07NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2009-10-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a magnetic polymer inorganic composite micro-sphere and is technically characterized in that a suitable template agent is added and a magnetic polymer micro-sphere is obtained with a suspension polymerization method after porous magnetic particles with a sol-gal process are prepared. As the template agent is added in the processes of the sol-gal or hydro-thermal synthesis and is removed after the high-temperature calcinations, the magnetic particles are caused to have the porous structure, thus reducing the density of the magnetic particles and simplifying the preparation process of the magnetic micro-sphere. Magnetic composite micro-spheres with multiple function groups on the surfaces are prepared according to needs. The magnetic substance is porous and the density of the magnetic substance is effectively decreased, thus being beneficial to suspension polymerization. The porous magnetic particles with lower density simplify the process of suspension polymerization. The magnetic micro-spheres or porous magnetic composite micro-spheres with magnetic responsiveness can be prepared when small quantities of magnetic substances(less than 20 percent of usage of monomer) are added.
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Description

technical field

[0001] The invention relates to a preparation method of magnetic polymer inorganic composite microspheres, which is a method for preparing magnetic composite microspheres by using large-diameter ferrite as a magnetic source. Background technique

[0002] Magnetic polymer / inorganic composite microspheres refer to microspheres with certain magnetic properties and special structures formed by combining organic polymers and inorganic magnetic materials by appropriate methods. Because magnetic polymer microspheres have many characteristics and magnetic responsiveness of polymer microspheres at the same time, they can not only endow their surface with functional groups by means of copolymerization and surface modification, but also can be separated conveniently and quickly under an external magnetic field, so magnetic Microspheres have shown strong vitality in the fields of biomedicine, cytology, bioengineering, and environmental detection.

[0003] At present, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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