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US 12,714,972 B2Granted
Gas separation membrane, and preparation method therefor and use thereof
AssigneeChangshu 3F Zhonghao New Chemical Materials Co., Ltd.
InventorsXingxing Sun, Shuyu Liu, Bo Huang, Lifeng Song, Lijun Du, Junyi Wu
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Abstract
A gas separation membrane, a preparation method therefor, and the use thereof in which the gas separation membrane comprises 60-100 mol % of a monomeric unit derived from α,β,β-trifluorostyrene, and has an intrinsic viscosity of 0.5-5.0 dL/g and a tensile strength of at least 50 MPa. According to the GB/T 1038-2000 test method test, the permeability coefficient of hydrogen is at least 100 barrer.
Claims7
A method for manufacturing a gas separation membrane, comprising the following steps:
- a) providing a polymer solution, wherein the polymer comprises 60-100 mol % of a monomeric unit derived from a,3, p-trifluorostyrene, and has an intrinsic viscosity of 0.5-5.0 dL/g;
- b) applying the polymer solution to a substrate plane and drying it;
- wherein the gas separation membrane has a tensile strength of at least 50 MPa, and a permeability coefficient for hydrogen of at least 100 barrer measured according to the GB/T 1038-2000 test method,
- wherein the drying is carried out in two steps:
- first at a temperature of 100-160° C. for 2-4 hours;
- and subsequently at a temperature of 170-210° C. for 1-2 hours.
3 more elements
Dependencies are inferred from the claim text.