Method for preparing hot reversible gel gas separation membrane

A gas separation membrane and gel technology, applied in the field of membrane separation, can solve problems such as secondary pollution of the environment, and achieve the effects of less influencing factors, simple preparation process and simple preparation process
CN102512975AInactive Publication Date: 2012-06-27JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2012-06-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a hot reversible gel gas separation membrane, which is characterized by comprising the following processing steps of (1), preparing membrane preparation materials: mixing 15 to 60 parts by weight of polymer and 40-85 parts by weight of ionic liquid, fusing and blending the materials at 130 to 180 DEG C to obtain an uniform membrane preparation material; and (2), forming a gel gas separation membrane: pressing the membrane preparation material into a flat liquid membrane with a thickness of 150 to 450 microns by a flat vulcanizing machine, and solidifying the flat liquid membrane for 1 to 3 hours in a water bath at 20 to 70 DEG C to obtain the hot reversible gel gas separation membrane, wherein the temperature for pressing is 140 to 190 DEG C. A thermally induced phase separation method is adopted to prepare the hot reversible gel gas separation membrane; the preparation process is simple; the disclosed compound gel gas separation membrane has high gas permeability and separation selectivity, meanwhile the membrane also has high mechanical intensity and broad industrial application prospect.
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Description

technical field

[0001] The invention relates to a preparation method of a thermally reversible gel gas separation membrane, belonging to the technical field of membrane separation. Background technique

[0002] The increasing concentration of carbon dioxide in the atmosphere has led to global warming and caused a series of ecological and environmental problems. Therefore, the issue of carbon dioxide emissions has attracted more and more attention. In the past 20 years, countries around the world have conducted extensive research on the removal of carbon dioxide from mixed gases. The more effective methods include physical absorption, physical adsorption, chemical absorption, low temperature condensation and membrane separation. Membrane separation is mainly the process of separating the mixed gas by using the selective permeability of the polymer membrane material to the components of the gas mixture. The use of membrane separation technology to achieve carbon dioxide separ...

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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