Air filtering material and its preparation method
A technology of air filter materials and composite materials, applied in the field of air filter composite materials, can solve the problems that ordinary air purifiers cannot remove harmful gases, fail to meet the requirements of air filter materials, and endanger human health, and achieve the reduction of the concentration of bacteria and viruses , Superior performance, thorough purification effect
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[0025] Example 1
[0026] (1) Polarization preparation of non-polar materials:
[0027] First, the air is ionized under the action of a corona needle with a bias of 3000v / cm to form ionized air, and then the melt-blown polypropylene non-woven fabric passes through the ionized air to form a permanent electric body.
[0028] (2) Preparation of composite oxide layer containing nano-particle photocatalyst:
[0029] The needle-punched composite material of intertwined polyester and polypropylene is immersed in TiO 2 In the mixture with water, run at a speed of 5 m / min, pass through two-roll rolling, remove the water, and dry at 85°C
[0030] TiO 2 In the mixture with water, TiO 2 The weight concentration is 20%, TiO 2 The dosage is 15% by weight of the composite material;
[0031] (3) The materials of steps (1) and (2) are combined by needle punching, so that the fibers of the two layers are entangled with each other. The needle speed machine speed is 800 times / m...
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