一种非对称PP中空纤维脱气膜及其制备方法和应用
By designing an external dense region and an external degassing region on the outer surface of an asymmetric PP hollow fiber degassing membrane, along with the distribution of external degassing pores and a non-directional tortuous pathway, the problem of low gas removal efficiency in ultrapure water is solved, achieving a membrane material that combines high-efficiency degassing and robustness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU COBETTER SEMICONDUCTOR SEPARATION MEMBRANE CO LTD
- Filing Date
- 2024-01-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing hollow fiber degassing membranes are difficult to effectively remove dissolved oxygen and other gases in ultrapure water applications, which affects the performance of ultrapure water in semiconductor applications. Furthermore, traditional preparation methods may leave additives that affect purity.
An asymmetric PP hollow fiber degassing membrane is designed, with an outer dense region and an outer degassing region on the outer surface. The outer degassing region contains external degassing pores with a pore size of 10-90 nm and a pore density greater than 10 pores/1 μm². Combined with a non-directional tortuous path and an appropriate thickness, it achieves a highly efficient degassing effect.
It achieves efficient removal of dissolved oxygen and other gases from ultrapure water, maintains the membrane's tolerance and mechanical strength, is suitable for long-term use, and meets the needs of semiconductor applications.
Smart Images
Figure CN117717914B_ABST