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Preparation and smoke suppression mechanism of flame-retardant PBS composites with BNNS@DOPA |
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| Authors: | Yun Zhang Zhenlin Jiang Mei Wang Jiapeng Chen Baoxiu Wang Chaosheng Wang Qifei Peng Lulu Xiong |
| Affiliation: | 1. College of Chemistry and Chemical Engineering, Research Center for Advanced Mirco- and Nano-Fabrication Materials, Shanghai University of Engineering Science, Shanghai, People's Republic of China
Contribution: Writing - original draft (equal);2. College of Chemistry and Chemical Engineering, Research Center for Advanced Mirco- and Nano-Fabrication Materials, Shanghai University of Engineering Science, Shanghai, People's Republic of China;3. College of Chemistry and Chemical Engineering, Research Center for Advanced Mirco- and Nano-Fabrication Materials, Shanghai University of Engineering Science, Shanghai, People's Republic of China Contribution: Conceptualization (equal);4. College of Chemistry and Chemical Engineering, Research Center for Advanced Mirco- and Nano-Fabrication Materials, Shanghai University of Engineering Science, Shanghai, People's Republic of China Contribution: Methodology (lead);5. College of Chemistry and Chemical Engineering, Research Center for Advanced Mirco- and Nano-Fabrication Materials, Shanghai University of Engineering Science, Shanghai, People's Republic of China Contribution: Project administration (lead);6. Key Laboratory of High Performance Fibers & Products, Ministry of Education, Donghua University, Shanghai, People's Republic of China Contribution: Resources (lead);7. Fujian Baihong High-tech Material Industry Co., Quanzhou, People's Republic of China Contribution: Validation (equal);8. Shanghai Dajue Packaging Products Co., Shanghai, People's Republic of China Contribution: Funding acquisition (equal) |
| Abstract: | Currently, the flame-retardant modification of polybutylene succinate (PBS) is mainly focused on improving flame-retardant efficiency, ignoring the negative impact of the smoke produced by combustion on the human respiratory tract. To address this problem, PBS composites were prepared by melt blending method in this study. The effect of boron nitride-grafted DOPO flame retardant (BNNS@DOPA) on flame retardancy and smoke suppression of PBS composites was investigated. Incorporating 3% BNNS@DOPA into PBS composites results in a 90% improvement in thermal conductivity. This resulted in a reduction of the peak heat release rate, total heat release rate, and actual smoke rate to 453.7 kW m?2, 86.3 MJ m?2, and 1035.9 m2, respectively, compared with pure PBS. The latter indicated a decrease of 34.0%, 37.6%, and 51.2%, respectively. Furthermore, the ignition time was extended by 45 s and the limiting oxygen index value increased by 12.5%. This functionalization approach presents a new way to study PBS flame retardancy improvement, consequently boosting its application in fire safety for polymer materials. |
| Keywords: | BNNS@DOPA flame retardant boron nitride polybutylene succinate smoke suppression |