Preparation and application of chitosan/carboxylated polyphenylene sulfide composite material

• Main Authors: CHEN YING, LIU NIJUAN, JIA QIANQIAN, GUO XUDONG, GUO RUIBIN, GUO WEI, MO ZUNLI, LIU WENTONG
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2020
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention provides a preparation method of a chitosan/carboxylated polyphenylene sulfide composite material. Carboxylated polyphenylene sulfide, chitosan dispersion liquid, isopropyl titanate serving as a condensing agent and polyethylene glycol 800 serving as a dispersing agent are ultrasonically dispersed uniformly in NMP, react for 2-2.5 hours at 220-240 DEG C in a nitrogen atmosphere, andare filtered, washed and freeze-dried to obtain the chitosan/carboxylated polyphenylene sulfide composite material. Since carboxyl exists on the carboxylated polyphenylene sulfide, an amido bond can be formed between the carboxylated polyphenylene sulfide and chitosan, good mechanical interlocking is achieved, a compact surface is formed, and the mechanical stability of the composite material is improved; therefore, the corrosion current density is lower, and the hydrophobicity and the corrosion resistance are greatly improved. The composite material is ultrasonically dispersed into ethyl alcohol to serve as a coating