Journal
CARBOHYDRATE POLYMERS
Volume 213, Issue -, Pages 257-265Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.02.088
Keywords
Cellulose; Mono-component; Intumescent flame retardant; Synergistic effect; Polypropylene
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Funding
- China Postdoctoral Science Foundation [2016M601380]
- Research Project of Science and Technology of the Education Department of Jilin Province during the 13th Five-year Plan Period [JJKH20170552KJ, JJKH20181023KJ]
- Science and Technology Development Project of Jilin Province [20170520136JH]
- Open Foundation Project of Key Laboratory of Bionic Engineering (Ministry of Education) of Jilin University [K201601]
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In this paper, a mono-component, cellulose-based and intumescent halogen-free flame retardant (HECPM) was prepared by introducing phosphate groups and melamine groups onto the structure of cellulose. And the chemical structure and surface morphology of HECPM was confirmed by FTIR, EDS and SEM, respectively. The thermal degradation tests demonstrate HECPM possesses great expansion property during the inducement of heat and the char residue of HECPM is higher than 43% at 600 degrees C. Moreover, the synergistic effect of HECPM and EG in flame-retarding polypropylene (PP) was also verified. When 30% HECPM/EG in ratio of 1/3 were introduced into PP, the LOI value reaches 31.5% and it can obtain UL-94 V-0 rating. The conjunct action of HECPM and EG in promoting the char-forming process was also achieved in comparison with the calculated and experimental TGA curves. Along with the investigation on the residue, a potential condensed-phase flame retardant mechanism was primarily proposed.
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