Views:0 Author:Site Editor Publish Time: 2020-09-10 Origin:Site
Activated carbon non-woven fabric is a rubber-carbon mixture made of activated carbon and binder in a certain ratio, and then the coke mixture is applied to the non-woven fabric according to a certain process, and the activated carbon non-woven fabric is obtained after drying at a certain temperature. It can not only absorb moisture, but also absorb various toxic, harmful and odorous gases. It can also be made into dust and gas masks, sanitary napkins, filters, deodorizers, deodorant insoles, diapers for children and adults, and packaging materials. It has good application prospects. In the development of activated carbon non-woven fabrics, the appropriate choice of activated carbon, adhesives and non-woven fabrics is the key. It should not only require the adhesive to have good bonding ability, but also require the use of activated carbon and adhesives. When forming a gelled carbon mixture, the less the influence of the binder on the adsorption performance of activated carbon, the better. In order to combine the characteristics of activated carbon and non-woven fabrics, an activated carbon non-woven fabric that has both high-efficiency adsorption performance of activated carbon and excellent filtering effect of non-woven fabric is prepared.
For activated carbon non-woven fabrics to have better adsorption performance, not only the amount of activated carbon loaded on the carrier, but also the adsorption capacity of the activated carbon itself. In order for the activated carbon to be uniformly distributed on the carrier, the choice of the particle size of the activated carbon is very important. Although the smaller the particle size of activated carbon is, it is conducive to its uniform distribution, but the particle size is too large, the particles are prone to agglomeration between ultrafine particles, which increases the particle size, which affects the dispersion effect, and then affects its uniformity of distribution and adsorption capacity . Therefore, after many experiments, the particle size range of activated carbon particles is selected to be 48μm-71μm.
Choice of non-woven fabric
At present, non-woven fabrics are divided into hot-rolled non-woven fabrics, chemically bonded non-woven fabrics, spunlace non-woven fabrics, needle-punched non-woven fabrics and melt-blown non-woven fabrics according to the production process. Through a large number of experiments, it is found that the activated carbon non-woven fabrics produced by hot-rolled non-woven fabrics, spunlace non-woven fabrics, needle-punched non-woven fabrics and melt-blown non-woven fabrics have poor uniformity and have textures, but chemically bonded non-woven fabrics A non-toxic and harmless polymer adhesive is added in the cloth production process. This adhesive has good moisture absorption and bonding effect, and can be dissolved and bonded with other polymer adhesives. It is easy to infiltrate, and its texture is fine and uniform, so that the activated carbon can be evenly distributed on the surface, thereby ensuring the uniformity of the activated carbon non-woven fabric. So choose chemically bonded non-woven fabric.