A kind of composite nanofiber filter material with photocatalytic/antibacterial function and preparation method thereof
A technology of composite nanofibers and filter materials, which is applied in the field of composite nanofiber filter materials with both photocatalytic/antibacterial functions and its preparation, can solve the problems of easy blockage of the liquid outlet, achieve improved liquid output, small pore size, Effect of low resistance pressure drop
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Embodiment 1
[0049] A composite nanofiber filter material with both photocatalytic / antibacterial functions and a preparation method thereof, the preparation method comprising the following steps:
[0050]1) Spinning solution preparation: uniformly disperse titanium dioxide photocatalyst (addition amount 0.5wt%, particle size 10nm) and silver ion antibacterial agent (addition amount 0.5wt%) in formic acid to form dispersion liquid, utilize ultrasonic disperser ( Ultrasonic frequency 40kHz, ultrasonic temperature 80°C) after ultrasonic stirring for 20 minutes, nylon 6 (weight average molecular weight: 50,000) was added to the dispersion, and after sealing, it was continuously stirred for 15 hours with a magnetic stirring device, and finally a stable and uniform quality A polymer spinning solution with a concentration of 10%;
[0051] 2) Electrospinning: the prepared polymer spinning solution is sucked into the spinning module through the liquid supply device, and the combined needle for elec...
Embodiment 2
[0056] A composite nanofiber filter material with both photocatalytic / antibacterial functions and a preparation method thereof, the preparation method comprising the following steps:
[0057] 1) Spinning solution preparation: uniformly disperse titanium dioxide photocatalyst (addition amount 1wt%, particle size 15nm) and zinc oxide antibacterial agent (addition amount 0.1wt%) in N, N-dimethylacetamide to form a dispersion , using an ultrasonic disperser (ultrasonic frequency 40kHz, ultrasonic temperature 70°C) to ultrasonically stir for 30 minutes, polyurethane (weight average molecular weight: 80,000) was added to the dispersion, and after sealing, it was continuously stirred for 8 hours with a magnetic stirring device, and finally prepared into Stable and uniform polymer spinning solution with a mass concentration of 15%;
[0058] 2) Electrospinning: the prepared polymer spinning solution is sucked into the spinning module through the liquid supply device, and the combined n...
Embodiment 3
[0063] A composite nanofiber filter material with both photocatalytic / antibacterial functions and a preparation method thereof, the preparation method comprising the following steps:
[0064] 1) Spinning solution preparation: uniformly disperse titanium dioxide photocatalyst (addition amount 1.5wt%, particle size 18nm) and copper oxide antibacterial agent (addition amount 0.8wt%) in N, N-dimethylformamide to form a dispersed After ultrasonically stirring for 40 minutes with an ultrasonic disperser (ultrasonic frequency 35 kHz, ultrasonic temperature 50°C), polyvinylidene fluoride (weight-average molecular weight: 320,000) was added to the dispersion, and after sealing, it was continuously stirred for 9 hours with a magnetic stirring device. , finally prepared into a stable and uniform polymer spinning solution with a mass concentration of 18%;
[0065] 2) Electrospinning: the prepared polymer spinning solution is sucked into the spinning module through the liquid supply device...
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