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Sun J, Zhang D, Shang X, Tan F, Bao D, Qin S. Flame-retardant properties and mechanism of LGF/PBT/DOPO-HQ-conjugated flame-retardant composites. Front Chem 2022; 10:981579. [PMCID: PMC9597195 DOI: 10.3389/fchem.2022.981579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/13/2022] [Indexed: 11/13/2022] Open
Abstract
In this article, long fiber reinforced polybutylene terephthalate (LGF/PBT/DOPO-HQ) flame-retardant composites were prepared using 10-(2,5-dihydroxy phenyl)-10H-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-HQ) as the conjugated flame-retardant. The effects of different flame-retardant contents on the combustion properties of the composites were investigated. The results showed that after adding 14% of DOPO-HQ, the flame-retardant effect of the composite reached the V-0 level of UL-94 fire rating with an ultimate oxygen index (LOI) of 26.4%. The average heat release rate (Av-HRR), peak heat release rate (PHRR), and total heat release rate (THR) decreased by 45.9, 56.5, and 32.6%, respectively. This shows that LGF/PBT/DOPO-HQ composite has good flame-retardant properties. Meanwhile, the flame-retardant mechanism of cohesive phase and gas-phase synergy during the combustion of flame retardants was analyzed by carbon layer morphology and dynamic thermal decomposition.
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Affiliation(s)
- Junzhuo Sun
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China
| | - Daohai Zhang
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China
- *Correspondence: Daohai Zhang, ; Dongmei Bao, ; Shuhao Qin,
| | - Xiaoyu Shang
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China
| | - Fang Tan
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China
| | - Dongmei Bao
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- *Correspondence: Daohai Zhang, ; Dongmei Bao, ; Shuhao Qin,
| | - Shuhao Qin
- School of Chemical Engineering of Guizhou Minzu University, Guiyang, China
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang, China
- *Correspondence: Daohai Zhang, ; Dongmei Bao, ; Shuhao Qin,
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Gao C, Lu H, Ni H, Chen J. Structure, thermal conductive, dielectric and electrical insulating properties of UHMWPE/BN composites with a segregated structure. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1414-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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