Reinforced heat-resistant electrostatic-spinning/electret composite fiber membrane filtering material and preparing method thereof
A composite fiber membrane and filter material technology, which is applied in electrospinning, spinning solution preparation, fiber treatment, etc., can solve the problems of charge stability easily affected by the environment, fast charge decay rate, and decrease in filtration efficiency, and achieve excellent Stable charge storage performance, improved filtration efficiency, and low air resistance effects
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[0030] An enhanced heat-resistant electrospinning / electret composite fiber membrane filter material consists of the following raw material components in parts by weight: polyetherimide 80, silicon monoxide 10, powdered activated carbon 15, 3-aminopropyl triethyl Oxysilane coupling agent 2, glacial acetic acid 2, appropriate amount of deionized water, metatitanic acid 6, 0.6mol / L AgNO 3 Appropriate amount of solution, appropriate amount of N-methylpyrrolidone, graphene oxide 2, zinc nitrate hexahydrate 3, dimethylimidazole 6, methanol 36.
[0031] Specific steps are as follows:
[0032] (1) Preparation of silver-loaded nano-titanium dioxide:
[0033] Add metatitanic acid into deionized water, control the solution concentration at 0.6mol / L, heat to 115°C to keep it boiling, hydrolysis reaction occurs to form white metatitanic acid precipitate, centrifugal filtration, washing until no SO is detected in the precipitate 4 2- ions, impregnated in 0.6mol / L AgNO 3 solution, after ...
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