Hydrophilic hollow fiber film and method of manufacturing the same
A fiber membrane and hydrophilic technology, applied in the field of membrane separation, can solve the problems of poor mechanical strength of highly hydrophilic membranes, and achieve the effects of easy control, good hydrophilicity, and good mechanical strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0009] Mix 10g of PVB and 40g of polyethylene glycol with a molecular weight of 200, heat it to 165°C at a stirring speed of 30rpm until completely dissolved, and form a homogeneous solution, let it stand for 60min, and heat the spinning head and extrusion device to Extrude the polymer solution with a screw extruder at 170°C. After passing through the spinning head and 5cm air distance, driven by the winding machine, the winding speed is 0.172m / s, and enter the condensing water bath with a temperature of 40°C, washing Bath, wound on the reel, so as to prepare the hydrophilic PVB hollow fiber membrane. The inner diameter of the hollow fiber membrane is 0.788mm, the thickness is 0.175mm, and the water flux of the membrane is 5.250×10 -4 m 3 / (m 2 .s.kPa), the retention rate of particles with an average particle size of 0.1um is 99.2%, and the tensile strength is 48.33kgf / cm 2 , the modulus of elasticity is 64.31N / mm 2 , The elongation rate is 139.81%.
Embodiment 2
[0011] Take 7.5g of PVB and 42.5g of diglycerol monobutyl ether, heat it to 160°C under the condition of stirring speed of 50rpm until it is completely dissolved, and form a uniform solution, let it stand for 60min, and heat the spinning head and extrusion device to 160°C at the same time , use a screw extruder to extrude the polymer solution, after passing through the spinning head and 10cm air distance, driven by the winding machine, the winding speed is 0.172m / s, and enter the condensation water bath and washing bath with a temperature of 25°C. Winding on the reel, so as to prepare the hydrophilic PVB hollow fiber membrane. The inner diameter of the hollow fiber membrane is 0.788mm, the thickness is 0.178mm, and the water flux of the membrane is 6.240×10 -3 m 3 / (m 2 .s.kPa), the retention rate of particles with an average particle size of 0.1um is 18.4%, and the tensile strength is 28.33kgf / cm 2 , the modulus of elasticity is 34.22N / mm 2 , The elongation rate is 84.33%...
Embodiment 3
[0013] Mix 9g of PVB and 41g of diethylene glycol, heat to 180°C at a stirring speed of 60rpm until completely dissolved to form a uniform solution, let stand for 100min, and heat the spinning head and extrusion device to 170°C at the same time, extrude with a screw The polymer solution is extruded by the machine, after passing through the spinning head and the air distance of 40cm, driven by the winding machine, the winding speed is 0.260m / s, entering the condensation water bath and washing bath with a temperature of 25°C, and winding on the winding drum On, thereby preparing the hydrophilic PVB hollow fiber membrane. The inner diameter of the hollow fiber membrane is 0.725mm, the thickness is 0.255mm, and the water flux of the membrane is 1.260×10 -6 m 3 / (m 2 .s.kPa), the rejection rate of particles with an average particle size of 0.1um is 99.5%, and the tensile strength is 33.32kgf / cm 2 , the modulus of elasticity is 28.45N / mm 2 , The elongation rate is 114.21%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| modulus | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More