首页>
外国专利>
FILTER MATERIAL FOR RESPIRATORS AND METHOD FOR MANUFACTURING WORKING LAYER OF FILTERING MATERIAL FOR RESPIRATORS
FILTER MATERIAL FOR RESPIRATORS AND METHOD FOR MANUFACTURING WORKING LAYER OF FILTERING MATERIAL FOR RESPIRATORS
展开▼
机译:用于呼吸器的过滤材料和制造用于呼吸器的过滤材料的工作层的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
FIELD: filtering materials. SUBSTANCE: filtering material contains outer and inner protective layers and working layer of fibrous polymer material consisting of fibers of perchlorovinyl polymers and styrene/methylmethacrylate/acrylonitrile copolymer at their weight ratio 10:1 to 1: 1. Manufacturing of filtering material for working layer of respirators includes electrostatic forming of fibrous nonwoven material from solution of above-indicated polymer mixture in dichloroethane in presence of 0.01-0.2 wt % of salts selected from the group including: tetraethylammonium iodide or bromide, tetrabutylammonium iodide or bromide, and ferrous chloride. Forming is conducted at dynamic viscosity of solution from 1 to 30 poise, conductivity 10-4 to 10-7 ohm-1cm-1, and voltage 10 to 150 kV, polymer concentration in dichloroethane solution ranging from 5 to 25%. EFFECT: enhanced filtration efficiency. 4 cl, 1 tbl
展开▼