Air filtering material with porous particles
An air filter material and porous particle technology, applied in the fields of dispersed particle filtration, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of easy desorption, high cost, secondary pollution, etc., and achieve high efficiency and service life. Long, not easy to stink effect
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Embodiment 1
[0054] (1) Spray a certain concentration of adipic acid dihydrazide solution to a pore volume of 1.3cm 3 / g of activated carbon particles, the addition of the adipic acid dihydrazide is 7.2% by weight, and then dried at a temperature of 85 ° C to obtain 100% by weight of -R-CONHNH 2 Structure of activated carbon particles, at this time R contains 4 -CH 2 -group, the average particle diameter of the activated carbon particles is 150 μm, and the pore volume after being treated with adipic acid dihydrazide solution is 0.8 cm 3 / g;
[0055] (2) Will contain -R-CONHNH 2 The activated carbon particles with the structure are directly mixed with hot-melt adhesive powder and sprinkled on a layer of thermally bonded non-woven fabric, and then composited with another layer of spun-bonded non-woven fabric through heat treatment at a temperature of 120 ° C for 2 minutes, and finally Formed with a grammage of 50g / m2 The air filter material of the activated carbon particle layer, the air ...
Embodiment 2
[0057] (1) Set the pore volume to 1.5 cm 3 Silica particles / g are immersed in a certain concentration of adipic acid dihydrazide solution, the addition amount of the adipic acid dihydrazide is 7.2% by weight, and then dried at a temperature of 85°C to obtain a solution containing -R-CONHNH 2 structure of silica particles, at this time R contains 4 -CH 2 - group, the average particle diameter of the silica particles is 200 μm, and the pore volume after being treated with adipic acid dihydrazide solution is 1.1 cm 3 / g;
[0058] (2) The -R-CONHNH prepared in (1) 2 Structured silica particles with an average particle size of 200 μm and a pore volume of 1.1 cm 3 / g of ordinary silica particles are mixed at a weight ratio of 70:30 to obtain 70% by weight of -R-CONHNH 2 Mixed particles of structured silica particles;
[0059] (3) Mix the above mixed silica particles with hot melt adhesive powder and sprinkle them on a layer of chemically bonded non-woven fabric, and then pass ...
Embodiment 3
[0061] (1) Spray a certain concentration of adipic acid dihydrazide solution to a pore volume of 1.5cm 3 On the silicon dioxide particle / g, the addition amount of the adipic acid dihydrazide is 7.2% by weight, and then the temperature is 90 ℃ and the drying treatment is carried out to obtain the -R-CONHNH 2 structure of silica particles, at this time R contains 4 -CH 2 - group, the average particle diameter of the silica particles is 200 μm, and the pore volume after being treated with adipic acid dihydrazide solution is 1.1 cm 3 / g;
[0062] (2) The -R-CONHNH prepared in (1) 2 Structured silica particles and phosphoric acid-treated particles have an average particle size of 150 μm and a pore volume of 0.8 cm 3 / g of activated carbon particles are mixed at a weight ratio of 50:50 to obtain 50% by weight of -R-CONHNH 2 Mixed particles of structured silica particles;
[0063] (3) Mix the above-mentioned mixed particles with hot-melt adhesive powder and sprinkle them on a la...
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