发明名称 |
Process for the preparation of composite semi-permeable membrane |
摘要 |
There is provided a process for the preparation of composite semi-permeable membrane superior in selectivity and permeability, capable of improving bonding strength between a porous support layer and a reinforcement and mechanical strength of semi-permeable membrane. The composite semi-permeable membrane is prepared by subjecting woven fabric or non-woven fabric to corona discharge with a discharge power of approximately 10 to approximately 15 watt for a period of approximately 20 to approximately 40 seconds, spraying water over one surface of the fabric, casting porous support substance on the other surface of the fabric when a time of approximately 5 to approximately 10 seconds has elapsed after the spray, and laminating a crosslinked polyamide ultrathin film on the porous support substance, the polyamide ultrathin film being synthesized by interfacial polycondensation of a multifunctional amine solution and a multifunctional halogen solution.
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申请公布号 |
US5593738(A) |
申请公布日期 |
1997.01.14 |
申请号 |
US19940359301 |
申请日期 |
1994.12.19 |
申请人 |
CHEIL SYNTHETICS INC. |
发明人 |
IHM, DAE W.;KIM, JEONG L.;KIM, KWON I.;KIM, BYENG H. |
分类号 |
B01D69/10;B01D69/12;B32B5/18;B32B27/12;B32B27/34;D06N3/12;(IPC1-7):C23C14/02 |
主分类号 |
B01D69/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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