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Journal of Polymer Research

, 26:40 | Cite as

Optimization of initiator and activator for reactive thermoplastic pultrusion

  • Ke Chen
  • Mingyin Jia
  • Sun Hua
  • Ping XueEmail author
ORIGINAL PAPER
  • 34 Downloads

Abstract

In order to manufacture continuous fiber reinforced thermoplastic composites with high fiber content, reactive thermoplastic pultrusion was developed by using the anionic polymerization of polyamide-6 in this study. Firstly, based on the polymerization time tests, combination of activator of difunctional hexamethylene-1,6-di carbamoylcaprolactam (C20) and initiator of sodium caprolactamate (C10) were chosen as the most suitable formula combination for pultrusion. Effects of concentrations of the activator C20 and the initiator C10 on the polymerization time, molecular weight of polymer and degree of conversion were also investigated. Then, the range of initial polymerization temperature was determined, which had a great influence on the impregnation of dense fiber reinforcement. Comparing with commercial polyamide-6, the anionic polyamide-6 has a higher modulus and lower elongation. Finally, continuous glass fiber reinforced polyamide-6 composites with 50% volume fraction were successfully pultruded. Great interfacial adhesion between fiber and polymer was observed by the scanning electron microscope.

Keywords

Thermoplastic composites Pultrusion Polyamide-6 Formula optimization 

Notes

Acknowledgements

The authors would like to appreciate Mrs. Jianing Geng (School of International Education, Beijing University of Chemical Technology) for her help in modifying the language of the manuscript.

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Beijing University of Chemical TechnologyInstitute of Plastic Machinery and EngineeringBeijingChina

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