Magnetic composite non-woven filter bag for removing magnetic fine particles and preparation method of filter bag
A magnetic and filter bag technology, which is applied in the field of magnetic composite non-woven filter bag for removing magnetic fine particles and its preparation, can solve the problems of low collection efficiency, achieve improved removal effect, high temperature resistance and flame retardancy, and structural design reasonable effect
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[0039] Example 1
[0040] 42.2 g of P84 fibers with a diameter of 15 μm were immersed in an HCL solution with a concentration of 5% for 5 hours, then washed with deionized water three times and dried at 50° C. for 6 hours before use. Then put 2000ml of deionized water and absolute ethanol (molar ratio of 2:1) in the constant temperature reaction tank (HH-4), adjust the pH of the solution to 1-2 with hydrochloric acid, and then put 22.5g of cobalt ferrite nano Particles (50nm in diameter) and 4.5g titanate coupling agent NDZ-201, the solution was ultrasonically dispersed for 30 minutes and then put into the pretreated P84 fiber, then shaken at 700r / min for 12h, and then passed Filtered, washed with deionized water and absolute ethanol for 3 times, dried at 50°C for 12 hours to obtain magnetic P84 fiber loaded with magnetic cobalt ferrite nanoparticles, and then undergo pre-opening, fine-opening, mixing, pre-feeding and combing , Netting, traction, acupuncture, glue spraying syste...
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[0050] Example 2
[0051] First, the P84 fiber with a diameter of 15μm was immersed in a 5% HCL solution for 5 hours, washed with deionized water and dried, and then put deionized water and absolute ethanol in the reaction tank (HH-4) ( The molar ratio is 2:1), adjust the pH of the solution to 2 with hydrochloric acid, and then add quantitative cobalt ferrite nanoparticles (50nm in diameter) and pretreated P84 fibers, and add an appropriate amount of titanate coupling agent to the mixture NDZ-201, the ratio of P84 fiber, cobalt ferrite particles, coupling agent and absolute ethanol: 1g:0.1g:0.03g:5ml. Then the solution was ultrasonically dispersed for 30 minutes and then shaken and shaken at a speed of 700r / min for 12 hours, then filtered, washed with deionized water and absolute ethanol for 3 times, and dried at 50°C for 12 hours to obtain the loaded magnetic cobalt ferrite nanoparticles. The magnetic P84 fiber. Then, the coated fiber, magnetic P84 fiber and short PTFE fiber a...
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