Importance

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Abstract

The present disclosure provides a high-efficiency degassing polyolefin hollow fiber membrane and a preparation therefor and use thereof. The membrane comprises a main body, wherein one side of the main body is an inner surface facing an inner cavity, the other side of the main body is an outer surface, a non-directional tortuous pathway is formed in the main body, the outer surface is a dense surface, and the area ratio of air pores in the inner surface is 10%-30%; the average thickness of the hollow fiber membrane is 45-65 m and the ratio of the average outer diameter to the average inner diameter of the hollow fiber membrane is 1.45-1.55; the TOC dissolving-out amount of the hollow fiber membrane itself is less than or equal to 0.5 μg/L; and the deoxidation efficiency of the hollow fiber membrane is greater than 80%.

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First Claim