Alkali-resistant ultrafiltration membrane and preparation method thereof
An ultrafiltration membrane and alkali-resistant technology, which is applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc. Prevent bacterial growth, good resistance to contamination and chemical attack, improve production quality
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0042] An alkali-resistant ultrafiltration membrane, comprising the following raw materials in proportions by weight:
[0043] Polyvinyl chloride: 20 parts;
[0044] Polyvinylidene fluoride: 10 parts;
[0045] Additives: 5 parts;
[0046] Solvent: 70 parts.
[0047] The above-mentioned alkali-resistant ultrafiltration membrane and a preparation method thereof comprise the following steps:
[0048] Step 1, pretreating the membrane-making raw material;
[0049] Step 2, mixing the prepared raw materials with an organic solvent to obtain a casting solution;
[0050] S1, defoaming: the casting solution is placed in a defoaming tank, stirred for 1 hour at a temperature of 70°C, and left to stand for 24 hours after mixing evenly.
[0051] S2. Preparing fibrils: sending the fully defoamed mixed solution into the spinning machine, extruding with a spinneret to form hollow fibrils, and standing;
[0052] S3. After part of the solvent in the fibril evaporates, immerse in a 2% glyceri...
Embodiment 2
[0069] The difference between embodiment two and implementation one is:
[0070] An alkali-resistant ultrafiltration membrane, comprising the following components in parts by weight:
[0071] Polyvinyl chloride: 25 parts;
[0072] Polyvinylidene fluoride: 15 parts;
[0073] Additives: 10 parts;
[0074] Solvent: 80 parts.
[0075] In this embodiment, the fully dissolved casting solution needs to be degassed at a temperature of 50-100° C. for 5-9 hours.
[0076] In this example, the coating speed of the casting solution on the non-woven fabric is between 1 and 8 m / s
[0077] In this embodiment, polyvinyl chloride and polyvinylidene fluoride are mixed according to the formula amount, additives are added, and the mixed solution is heated to 70° C. to dissolve until the casting solution is uniform and transparent.
[0078] Others are the same as embodiment one.
Embodiment 3
[0080] Embodiment three is different from implementation one in that:
[0081] An alkali-resistant ultrafiltration membrane, comprising the following components in parts by weight:
[0082] Polyvinyl chloride: 15 parts;
[0083] Polyvinylidene fluoride: 5 parts;
[0084] Additives: 5 parts;
[0085] Solvent: 60 parts.
[0086] In this embodiment, the fully dissolved casting solution needs to be degassed at a temperature of 40-100°C for 5-8 hours.
[0087] In this example, the coating speed of the casting solution on the non-woven fabric is between 1 and 8 m / s
[0088] In this embodiment, polyvinyl chloride and polyvinylidene fluoride are mixed according to the formula amount, additives are added, and the mixed solution is heated to 50° C. to dissolve until the casting solution is uniform and transparent.
[0089] Others are the same as embodiment one.
PUM
Property | Measurement | Unit |
---|---|---|
Outer diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com