Amidoximized polyacrylonitrile fiber and preparation method and applications thereof

A technology of polyacrylonitrile fiber and polyacrylonitrile, which is applied in chemical instruments and methods, fiber chemical characteristics, inorganic chemistry, etc. It can solve the problems of brittle fracture or powderization, loss of fiber characteristics, and influence on fiber preparation, etc., and achieves simple operation , excellent adsorption performance, and the effect of saving preparation cost and time
CN108893797AActive Publication Date: 2018-11-27SHENZHEN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHENZHEN UNIV
Publication Date
2018-11-27

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Abstract

The invention provides a preparation method of an amidoximized polyacrylonitrile fiber. The preparation method includes the following steps: preparing a polyacrylonitrile solution and a first organicsubstance solution, wherein the first organic substance includes an organic substance having a hydroxyl group and an amino group; evenly mixing the polyacrylonitrile solution and the first organic substance solution to prepare a spinning solution, wherein the mass concentration of polyacrylonitrile in the spinning solution is 8%-15%; carrying out electrostatic spinning on the spinning solution at40 DEG C to 60 DEG C to obtain the amidoximized polyacrylonitrile fiber; or carrying out electrostatic spinning on the spinning solution at a temperature greater than or equal to 20 DEG C and less than 40 DEG C, and then carrying out vacuum drying at 60 DEG C to 80 DEG C to obtain the amidoximized polyacrylonitrile fiber. The preparation method provided by the invention is simple in operation. Theamidoximized polyacrylonitrile fiber is prepared by controlling the temperature of the electrostatic spinning, and the prepared amidoximized polyacrylonitrile fiber has excellent metal adsorption properties and reusability.
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Description

technical field

[0001] The invention relates to the field of polymer materials, in particular to amidoximated polyacrylonitrile fiber and its preparation method and application. Background technique

[0002] With the development of industry and the wide application of precious metals, the demand for precious metals is increasing day by day, and the recovery of precious metals has become particularly important. At the same time, urban domestic sewage and various mining wastewater contain a large amount of heavy metal ions, which are bioaccumulated through the food chain and pose a serious threat to organisms and human health. Therefore, the removal and recovery of heavy metal ions in sewage is of great significance. Adsorption method is currently recognized as an economical, effective, flexible and simple metal adsorption method. The most important thing in the adsorption method is the adsorbent. Among them, the polyacrylonitrile fiber material has the advantages of small ...

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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