Abstract
To improve the flame retardant properties of polyethylene terephthalate (PET), glucose-derived carbon nanospheres (CNSs) were synthesized and introduced into PET matrix. The thermal property and flame retardancy of CNSs/PET composites were thoroughly investigated. Results showed that CNSs displayed good flame-retardant performance for PET. When blended with only 1.0 wt.% of CNSs, CNSs/PET exhibited a limiting oxygen index (LOI) of 26.3 and a vertical combustion class of V-2, and its peak-heat release rate (pk-HRR) was reduced by 41.6%. Importantly, the initial decomposition temperature and the maximum weight loss temperature of CNSs/PET were 52°C and 199°C higher than those of PET, respectively. Furthermore, a condensed phase flame-retardant mechanism appeared in CNSs/PET, which formed a dense and thermally stable protective char layer during combustion. Overall, this study disclosed the flame-retardant potential and possible mechanism of CNSs for polyesters, which would benefit the development of carbon-based materials and flame-retardant polymers.
Highlights
Polyethylene terephthalate (PET) is one of the most widely used polymer materials, involving textile, packaging and engineering plastics field (Dong et al, 2016; Zhang et al, 2020), but its flammability has brought great fire hazards to human life and property safety (Quartinello et al, 2019)
Glucose-derived carbon nanospheres (CNSs) were firstly synthesized via a hydrothermal method, and the morphology and structure of CNSs were characterized
Peak at 3480 cm−1 corresponds to the O-H stretching vibration peak; Peaks at 2921 and 1440 cm−1 correspond to the O-H stretching vibration and bending vibration peaks of carboxyl, respectively; Peak at 1634 cm−1 is attributed to the stretching vibration peak of -C O-; Peak at 1318 cm−1 corresponds to the stretching vibration peak of C-O in carboxyl
Summary
Polyethylene terephthalate (PET) is one of the most widely used polymer materials, involving textile, packaging and engineering plastics field (Dong et al, 2016; Zhang et al, 2020), but its flammability has brought great fire hazards to human life and property safety (Quartinello et al, 2019). Carbon-based nanoparticles, especially carbon nanotubes (Dittrich et al, 2013a; Wu et al, 2013; Kashiwagi et al, 2015; Shi et al, 2021), graphenes (Li et al, 2014; Yu et al, 2015; Huang et al, 2021), fullerenes (Song et al, 2009; Yang et al, 2021), etc., have attracted extensive attention due to their outstanding performance, which opened up a new way for the preparation of multifunctional flame-retardant polymer materials. The limiting oxygen index (LOI) and vertical burning test specimens were prepared using an injection molding machine (JH600), the temperature of each section for injection molding was 255, 254, 253, and 251°C. The detection of MS was carried out using NIST library
Sign-in/Register to view highlights & summary 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.
