| 摘要 |
<p>A process for producing a para-aromatic polyamide paper which comprises impregnating a web prepared by papermaking from a papermaking material comprising as an essential component at least one component selected from the group consisting of pulp, short fibers and stable fibers of a para-aromatic polyamide with or without a particulate polymer of a para-aromatic polyamide with a binder which is a solution consisting of a polar amide solvent having dissolved therein 0.5 % to 10 % by weight of a chloride of an alkali metal or an alkaline earth metal and 0.5 % to 10 % by weight of a para-aromatic polyamide having an inherent viscosity of 1.0 to 2.5 dl/g. According to the above process, a high performance para-aromatic polyamide paper consisting essentially of a para-aromatic polyamide is obtained. Said paper has agglutinate portions of fibers while keeping the heat resistance and stiffness which are the characteristic features of para-aromatic polyamide and also has such excellent properties that the paper quality is uniform, the breaking length is long and the paper strength is high.</p> |
