POLYAMIDE COMPOSITE MEMBRANE PREPARATION PROCESS

摘要

The solution of 23wt% dimethylformamide and polysulfone, 15% polyvinylphyrolidon is cast with the polyester fabrics in the thickness of 150 micrometer, immersed in the water of 5 degree C and solidified. It is again immersed in the water solution of 1.5wt% metaphenylenediamine for 10 minutes and is impregnated in 0.5wt% trimezoilchloride for 10 minutes. After being dried, this product is washed in the 50 degree C by the pure water.