公开(公告)号：US20160075845A1

公开(公告)日：2016-03-17

申请号：US14949889

申请日：2015-11-24

Applicant: TIANJIN POLYTECHNIC UNIVERSITY

Inventor： Changfa Xiao ,  Jian Pan ,  Qinglin Huang ,  Hailiang Liu ,  Zhen Liu ,  Guolan Huan

IPC: C08J9/12 ,  B29C43/02 ,  B29C43/52 ,  C08J9/00

CPC classification number: B29C43/52 ,  B01D67/002 ,  B01D67/003 ,  B01D69/08 ,  B01D69/087 ,  B01D71/32 ,  B01D71/76 ,  B01D2323/18 ,  B29C43/003 ,  B29C43/02 ,  B29K2023/08 ,  B29K2105/12 ,  B29K2995/0068 ,  B29L2031/755

Abstract: A membrane formulation of fluorinated copolymer porous membrane includes: 15-50 wt % ethylene-chlorotrifluoroethylene copolymer, 30-85 wt % diluent and 0-20 wt % composite pore-forming agent, totally 100 wt %; wherein the diluent is selected from a group consisting of di-isooctyladinpate, di-isooctyladinpate with dibutyl phthalate, diethyl phthalate and dioctyl phthalate with any proportion. Methods for preparing a fluorinated copolymer porous flat membrane and a fluorinated copolymer hollow fiber porous membrane with the above formulation are also provided. With the formulation, a membrane-forming temperature is reduced to below 200° C., and processes thereof are convenient. Furthermore, membrane mechanical property is excellent, porosity is high, permeability is sufficient, and the method is suitable for membrane separation under severe conditions such as acid-base mediums and organic solvents.

Abstract translation: 氟化共聚物多孔膜的膜制剂包括：15-50重量％的乙烯 - 三氟氯乙烯共聚物，30-85重量％稀释剂和0-20重量％复合成孔剂，总计100重量％ 其中所述稀释剂选自由二异辛基阿魏酸，二异辛酯和邻苯二甲酸二丁酯，邻苯二甲酸二乙酯和邻苯二甲酸二辛酯以任何比例组成的组。 还提供了具有上述配方的氟化共聚物多孔平坦膜和含氟共聚物中空纤维多孔膜的制备方法。 通过配方，将成膜温度降低到200℃以下，其工艺便利。 此外，膜机械性能优异，孔隙率高，渗透性充分，该方法适用于苛刻条件下的酸碱介质和有机溶剂的膜分离。