COMPOSITION FOR COATING BRAID COMPOSITE HOLLOW FIBER MEMBRANE METHOD FOR PREPARING COMPOSITE HOLLOW FIBER MEMBRANE USING THE SAME COMPOSITE HOLLOW FIBER MEMBRANE PREPARED THEREFROM AND APPARATUS FOR PURIFYING WATER

摘要

An object of the present invention is to provide a composition for coating a reinforcing material having excellent mechanical strength and water permeability, a method for manufacturing a composite hollow fiber membrane using the same, a composite hollow fiber membrane, and a water treatment apparatus. The composition for coating a reinforcing material of the present invention comprises: at least 8 wt% and less than 20 wt% of vinylidene fluoride polymer resin; more than 60 wt% and less than 90 wt% of a solvent; 0.1-5 wt% of acetylated methylcellulose; and 1-15 wt% of a hydrophilic additive.