一种PVC超滤膜及其改性方法
The modification method of PVC ultrafiltration membrane matrix by high-pressure liquid impact solves the problem of strong hydrophobicity of PVC membrane material, improves hydrophilicity and flux, and achieves low-cost modification effect, which is suitable for wastewater treatment and other fields.
CN120393732BActive Publication Date: 2026-07-17WUYI UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUYI UNIV
- Filing Date
- 2025-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing PVC membrane materials have high hydrophobicity and low flux. Current modification methods require the introduction of additional chemical components, which increases costs and process difficulty.
Method used
The PVC ultrafiltration membrane substrate is modified by impacting it with high-pressure liquid using acidic or alkaline solutions, deionized water, or other high-pressure liquids. The nozzle and the membrane substrate move relative to each other at a specific angle and speed.
Benefits of technology
Without altering the raw material composition, the hydrophilicity, surface potential, water flux, and dye rejection rate of the PVC ultrafiltration membrane are improved. It is simple to operate, low in cost, and suitable for large-scale production.
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Smart Images
Figure CN120393732B_ABST
Abstract
本发明公开了一种PVC超滤膜及其改性方法，该改性方法与传统的共混改性、本体改性和表面改性等方法有明显不同，具体采用高压液体冲击PVC超滤膜基体，高压液体使用酸性溶液、碱性溶液、去离子水中的一种，喷出高压液体的喷嘴与PVC超滤膜基体之间的夹角为45°‑50°，在未改变PVC薄膜制备原料成分的基础上，显著提升了其亲水性、表面电势、水通量和染料截留率。本发明还提供了上述制备方法制得的PVC超滤膜。
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