Research on Performance of Polyimide In Situ Modification Anionic Polymerization Nylon 6

Abstract:

Through the polymerization and grafting reaction of bisphenol A dianhydride and bisphenol A diamine, the polyimide activator (PI activator) of acyl caprolactam end capping is obtained and then the anionic in-situ polymerization modified nylon 6 resin is obtained. Viscosity analysis shows that PI consumption is higher than 0.1 (of monomer mass), the reaction temperature is higher than 160°C, the viscosity rises rapidly in a short time and the rapid polymerization molding can be realized; when PI consumption is higher than 0.15 (of monomer mass), the water absorption of matrix resin will be lower than 1.4%; compared with the nylon resin, its water absorption is significantly lowered and its mechanical property is improved greatly; microscopic analysis shows that PI molecules fail to enter the crystalline phase of the nylon 6 and form lamellar crystals in the nylon matrix, which plays a role of enhancement and obstruction; differential thermal analysis shows that PI reduces the melting enthalpy and melting point temperature of nylon 6 resin, which indicates that PI reduces the crystallization capacity of nylon 6.

• Periodical: Advanced Materials Research (Volume 1052)
• Pages: 242-248
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1052.242
• Online since: October 2014
• Authors: Hong Kai Zhao, Hong Li Wang
• Keywords: Anion, Caprolactam, In Situ Polymerization, Nylon 6, Polyimide

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