Detailed discussion on the production method and performance characteristics of viscose activated carbon non-woven filter cloth

OF: Time: 2019-12-17 08:24:37 Click: 2057 a, Preparation of impregnation solution (1) 1. viscose nonwoven activated carbon Activated carbon filter cloth dried at the temperature 80 ℃, using Use a magnetic stirrer to heat and dissolve a certain proportion of PVA (1788) and sodium lauryl sulfate, and continue to stir until a homogeneous flocculent solution; pour the activated carbon into the water to fully wet the activated carbon to form a mixed solution of activated carbon and water; Then add the dissolved additives to the mixed solution of activated carbon and water, and after stirring, a uniform immersion liquid is obtained [7]. 2. Preparation of multi-layer composite viscose non-woven filter cloth. Coat the impregnating liquid evenly on the surface of the viscose needle punched non-woven fabric, press out the excess impregnating liquid with a pressure roller, and dry it at 60 ℃ for 1 h. Dry it at room temperature for 24 hours to prepare a VC-ACF semi-finished product. The hot-melt adhesive interlining is evenly ironed on both sides of the fabric to obtain the final multilayer composite material. 3. Filter cloth plus cross-linking agent to remove excess PVA. Dry the filter cloth at 80 ℃ for 1 h. After drying, take it out and add the prepared sodium tetraborate solution, which is the cross-linking agent, and let it stand at room temperature for 2 minutes to filter. The PVA in the cloth and sodium tetraborate are fully cross-linked, and the solution becomes gel-like. Finally, the non-woven filter cloth is dried at 40 ℃ for 2 hours until excess water is removed. (2) Performance conclusion: In this paper, viscose nonwoven fabric is used as the basic material, activated carbon, sodium lauryl sulfate and polyvinyl alcohol 1788 are used as raw materials, and activated carbon is obtained through chemical dipping method and hot melt adhesive lining fixation treatment. Viscose non-woven filter cloth (VC-ACF), and after testing, characterization and filtering performance analysis, the following conclusions are obtained: a) The VC-ACF obtained by the experiment has good filtering performance for heavy metal ions and dyes, and has good filtering performance for dyes. The filtering performance of the filter is particularly outstanding, and it can be used in practice in terms of the filtering effect. b) The viscose activated carbon non-woven fabric is modified with a crosslinking agent to improve the water resistance of PVA and avoid secondary pollution to the water body after filtration. c) According to the burst performance of the material, VC-ACF can bear a certain impact force when filtering, which makes the material have better durability whether it is against airflow or water flow. d) The emergence of VC-ACF basically solves the problem of unstable shape of activated carbon powder under vibration during use. To a certain extent, the application of activated carbon in the field of sewage treatment has been promoted. Related tags: Previous: What is the workflow of custom non-woven handbags? The corresponding correct process introduction