PVDF ultrafilter membrane
A technology of ultrafiltration membrane and polyvinylidene fluoride, applied in ultrafiltration, membrane technology, semi-permeable membrane separation, etc., can solve problems that need to be improved, and achieve excellent corrosion resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] A kind of PVDF ultrafiltration membrane, take polyvinylidene fluoride as the raw material of membrane, described polyvinylidene fluoride is prepared by following steps:
[0021] 1) Put 1 to 2 parts by weight of sodium peroxide, 1.6 parts by weight of hydrogen peroxide, and 1.9 parts by weight of inorganic alkali solution into the reaction kettle, mix well, and then put in 0.9 parts by weight of sodium butyl ricinoleate sulfate, 15.2 parts by weight of hexafluoroethane Solvent, 0.4 parts by weight of sulfuryl chloride solution, stirred and reacted at -5.5°C for 36 minutes;
[0022] 2) Add 4.7 parts by weight of polyglycerol monostearate, 7.3 parts by weight of polyacrylic acid solution, 78 parts by weight of vinylidene fluoride monomer, and 3.8 parts by weight of 2,2,3-trimethylpentane, and stir at 31°C Reaction, the reaction is terminated when the pressure drops below 0.26MPa;
[0023] 3) Filtrate, wash, and dry to obtain powdered polyvinylidene fluoride.
Embodiment 2
[0025] The PVDF ultrafiltration membrane uses polyvinylidene fluoride as the raw material of the membrane, and the polyvinylidene fluoride is prepared by the following steps:
[0026] 1) Put 1 part by weight of sodium peroxide, 1.6 parts by weight of hydrogen peroxide, and 1.9 parts by weight of inorganic alkali solution into the reaction kettle, mix them evenly, and then put in 0.9 parts by weight of sodium butyl ricinoleate sulfate, 15.2 parts by weight of hexafluoroethane solvent, 0.4 parts by weight of sulfonyl chloride solution, stirred and reacted at -5.5°C for 36 minutes;
[0027] 2) Add 4.7 parts by weight of polyglycerol monostearate, 7.3 parts by weight of polyacrylic acid solution, 78 parts by weight of vinylidene fluoride monomer, and 3.8 parts by weight of 2,2,3-trimethylpentane, and stir at 31°C Reaction, the reaction is terminated when the pressure drops below 0.26MPa;
[0028] 3) Filtrate, wash, and dry to obtain powdered polyvinylidene fluoride.
Embodiment 3
[0030] The PVDF ultrafiltration membrane uses polyvinylidene fluoride as the raw material of the membrane, and the polyvinylidene fluoride is prepared by the following steps:
[0031] 1) Put 2 parts by weight of sodium peroxide, 1.6 parts by weight of hydrogen peroxide, and 1.9 parts by weight of inorganic alkali solution into the reaction kettle, mix evenly, and then add 0.9 parts by weight of sodium butyl ricinoleate sulfate, 15.2 parts by weight of hexafluoroethane solvent, 0.4 parts by weight of sulfonyl chloride solution, stirred and reacted at -5.5°C for 36 minutes;
[0032] 2) Add 4.7 parts by weight of polyglycerol monostearate, 7.3 parts by weight of polyacrylic acid solution, 78 parts by weight of vinylidene fluoride monomer, and 3.8 parts by weight of 2,2,3-trimethylpentane, and stir at 31°C Reaction, the reaction is terminated when the pressure drops below 0.26MPa;
[0033] 3) Filtrate, wash, and dry to obtain powdered polyvinylidene fluoride.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More