Abstract
Brominated flame-retardant high-density polyethylene (HDPE) composites containing graphene nanoplatelets (GNPs) were prepared via melt blending. A Lewis acid catalyst, aluminum chloride (AlCl3), was adopted to initiate the Friedel–Crafts reaction, which contributed to the good dispersion of GNPs and improvement of interfacial interaction. Scanning electron microscopy (SEM) showed that the size of GNPs decreased and the dispersive state of GNPs was improved with the addition of AlCl3. The maximum decomposition temperature (Tmax), modulus, and viscosity increased as the catalyst content increased, whereas the peak heat release rate (PHRR) and the total heat release (THR) decreased with increasing catalyst content. However, gel permeation chromatography (GPC) verified the degradation for HDPE at high catalyst concentration, and then thermal oxidation stability and flame retardancy worsen. The variety of performance of the composites was the result of the competition between improving the dispersion and degradation of composites.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
