FIELD: ventilation.
SUBSTANCE: in order to produce the filter material, polyacrylonitrile nanofibres are electroformed in electric field of high voltage and simultaneous laying of the formed nanofibres onto nonwoven substrate in 1-10 layers, after which the obtained material is folded two or three times. The forming is carried out from polyacrylonitrile solution in a solvent at a concentration of 12-13% wt %, solution viscosity is 0.9-1.4 Pa⋅, temperature 30-35°C, relative humidity is 7-17%, electric field voltage is 65-70 kV, the distance between the forming and precipitation electrodes is 170-190 mm. The nanofibres have a diameter of 180-250 nm, the mass per unit area of the nanofibrous layer is 1-7 g/m2, the resistance to air flow at a linear velocity of 1 cm/s is 47-150 Pa.
EFFECT: improved filtration efficiency, simplified production of the filter material.
4 cl, 2 tbl, 4 ex
| Title | Year | Author | Number |
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| TEXTILE ANTIMICROBIAL MATERIAL WITH MULTICOMPONENT NANO-MEMBRANES AND PREPARATION METHOD THEREOF | 2014 |
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| MULTILAYER NON-WOVEN FABRIC WITH POLYAMIDE NANOFIBRES | 2013 |
|
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| FILTERING MATERIAL FOR PROTECTION AGAINST AIR SUSPENDED PARTICLES | 2019 |
|
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| TEXTILE NON-WOVEN ELECTRIC-SPINNING MATERIAL WITH MULTICOMPONENT ACTIVE MODIFYING ADDITIVES AND METHOD OF ITS PRODUCTION | 2018 |
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RU2697772C1 |
