Novel PPS washing and purifying process

• Main Authors: LI ZHENGHUI, WANG JIANQIANG, LI GUIJIE, ZHANG QIANHE, NIE ZHICHAO, YOON EUN-TAE
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a novel PPS (polyphenylene sulfide) washing and purifying process, which comprises the following steps: 1) taking quantitative polyphenylene sulfide, namely pps, in a beaker, adding a certain amount of water and NMP (N-Methyl Pyrrolidone) according to a proportion, stirring and washing by using an electric stirrer for 15 minutes, filtering by using a 200-mesh screen after washing, and keeping a solid phase for later use; (2) adding the filtered PPS into a beaker, adding quantitative deionized water according to the mass ratio of 1: 5, stirring and washing by using an electric stirrer for 15 minutes, and filtering by using a 200-mesh screen after washing to obtain a solid phase for later use; (3) adding the filtered PPS into a beaker, adding quantitative deionized water according to the mass ratio of 1: 5, stirring and washing by using an electric stirrer for 15 minutes, filtering by using a 200-mesh screen after washing, and drying a solid phase in a vacuum drying oven for later use;