Method for preparing skin-free homogeneous structural polyvinylidene fluoride transfer film
A technology of polyvinylidene fluoride and transfer membrane, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., to achieve uniform pore size, stable structure and performance, and high porosity
Inactive Publication Date: 2010-10-06
ZHEJIANG UNIV
6 Cites 6 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Abstract
The invention discloses a method for preparing a skin-free homogeneous structural polyvinylidene fluoride transfer film, which comprises the following steps of: (1) mixing raw materials, stirring the raw materials uniformly at the temperature of between 60 and 140 DEG C, standing and de-foaming the mixture to obtain polyvinylidene fluoride film-making solution, and standing the film-making solution for later use; (2) scraping the film-making solution on a clean and flat glass plate, wherein the thickness of the film solution is 300 to 700 microns; (3) dipping the scraped film solution into a first gel bath, and soaking the film solution for 0.05 to 48 hours at the temperature of between 0 and 30 DEG C to obtain a coarse ecological film; (4) dipping the coarse ecological film into a second gel bath, and soaking the coarse ecological film for 0.1 to 2 hours at the temperature of between 5 and 70 DEG C; and (5) soaking the film into purified water for at least 24 hours, fully displacing the residual organic solvent and additive, then taking the film out, and naturally airing the film to obtain the homogeneous network structural polyvinylidene fluoride transfer film. The preparation method has simple process and low production cost, and the prepared polyvinylidene fluoride transfer film has high strength and high protein adsorption quantity.
Application Domain
Semi-permeable membranes
Technology Topic
Polyvinylidene fluorideChemistry +7
Image
Examples
- Experimental program(5)
- Comparison scheme(1)
Example Embodiment
Example Embodiment
Example Embodiment
PUM
Property | Measurement | Unit |
Viscosity average molecular weight | 400000.0 ~ 900000.0 |
Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Paligorskite ethene-vinyl acetate composite flame-proof material
Owner:NORTHWEST NORMAL UNIVERSITY
Plant volatile matter imitation attractant and pesticide thereof
Owner:INST OF ZOOLOGY CHINESE ACAD OF SCI
Classification and recommendation of technical efficacy words
- Uniform pore size
- stable performance
Asymmetrically-structural ceramic ultrafiltration membrane and preparation method thereof
Owner:NANJING UNIV OF TECH
Preparation method of porous graphene
ActiveCN103663438AUniform pore sizeWide range of pore size distribution
Owner:暴宁钟
Composite porous support material and preparation method thereof
Owner:SHAANXI NORMAL UNIV
Preparation method of nano mesoporous titania with core-shell structure
Owner:NANJING UNIV OF TECH +1