Priority dealcoholization PDMS/PVDF multi-layer compound film and preparation method thereof
A multi-layer composite membrane and preferential dealcoholization technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of low strength of separation membrane, high production cost, limited application, etc., and achieve simple production process , the effect of low production cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] 1) Dissolve 6g of PVDF in 34g of triethyl phosphate (TEP) to make a solution with a concentration of 15wt%, stir evenly at 70°C, filter, defoam, and scrape the film directly on one side of the polyester non-woven fabric, water is Gel bath, using the immersion precipitation phase inversion method to obtain a PVDF porous base film supported by non-woven fabrics, with a thickness of 45 μm. After the solvent exchange is complete, soak the base film with ethanol for 5 minutes and dry it naturally; then use the same method on the non-woven Cloth another test to prepare the porous base film, soak it in ethanol for 5min, and let it dry naturally.
[0021] 2) Dissolve 6g of PDMS with a viscosity of 50,000, 0.5g of phenyltrimethoxysilane, and 0.2g of dibutyltin dilaurate as a catalyst in n-heptane, and prepare a solution with a concentration of 30wt%, and stir evenly. Before gelling, place the PVDF base film supported by non-woven fabric in the film liquid for 10 seconds, take it...
example 2~4
[0028] Examples 2-4 investigated the relationship between different film-making conditions and film properties of PDMS / PVDF multilayer composite film, see Table 3. All the other conditions are with embodiment 1.
[0029] Table 3 Example 2~4 film preparation conditions and performance list
[0030] instance number
[0031] Film thickness (μm)
[0032] The change law of the separation factor and permeation flux of the PDMS / PVDF multilayer composite membrane with temperature and concentration in Examples 2-4 is the same as that of Example 1.
PUM
Property | Measurement | Unit |
---|---|---|
Thickness | 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