A P-AROMATIC POLYAMIDE VENT DUCT AND ITS APPLICATION, AND APPLICATION OF P-AROMATIC POLYAMIDE TO THE VENT DUCT

摘要

A ventilation pipe includes a woven layer(10) of para-aramid fiber, a polymer layer or a polymer mixture layer (20) which is coated at the inside and/or outside of the woven layer(10). Said ventilation pipe has a high tensile strength, tear strength, flexility and flame-retardant property. It can be applied to mining industry.