Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites

doi:10.1016/j.cjche.2020.04.014

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (7): 1981-1993.DOI: 10.1016/j.cjche.2020.04.014

• Materials and Product Engineering • 上一篇

Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites

Haowei Huang^1,2, Dexuan Dong², Weijie Li¹, Xinya Zhang², Li Zhang¹, Ying Chen¹, Xinxin Sheng¹, Xiang Lu³

1 Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;
2 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
3 Key Laboratory of Polymer Processing Engineering of the Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou 510641, China

收稿日期:2020-03-16 修回日期:2020-04-20 出版日期:2020-07-28 发布日期:2020-08-31
通讯作者: Xinxin Sheng, Xiang Lu
基金资助:
The authors acknowledge support from the National Natural Science Foundation of China (Grant Nos. 21908031 and 51903092) and the China Postdoctoral Science Foundation funded project (Grant No. 2019M652884). Y. C acknowledges the support from Guangdong Special Support Program (Grant No. 2017TX04N371).

Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites

Haowei Huang^1,2, Dexuan Dong², Weijie Li¹, Xinya Zhang², Li Zhang¹, Ying Chen¹, Xinxin Sheng¹, Xiang Lu³

1 Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China;
2 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;
3 Key Laboratory of Polymer Processing Engineering of the Ministry of Education, National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou 510641, China

Received:2020-03-16 Revised:2020-04-20 Online:2020-07-28 Published:2020-08-31
Contact: Xinxin Sheng, Xiang Lu
Supported by:
The authors acknowledge support from the National Natural Science Foundation of China (Grant Nos. 21908031 and 51903092) and the China Postdoctoral Science Foundation funded project (Grant No. 2019M652884). Y. C acknowledges the support from Guangdong Special Support Program (Grant No. 2017TX04N371).

摘要/Abstract

摘要： The effect of Ti₃C₂ MXene nanosheets on the intumescent flame retardant (IFR) poly (lactic acid) (PLA) composites was investigated among a series of PLA/IFR/MXene, which were prepared by melt blending 0-2.0 wt% MXene, 10.0 wt%-12.0 wt% IFR and PLA together. The results of limiting oxygen index (LOI) and vertical burning (UL-94) discover that the combination of 0.5 wt% MXene and 11.5 wt% IFR synergistically improves the fire safety of PLA to reach UL-94 V-0 rating with LOI value of 33.0%. The PLA/IFR/MXene composites perform an obvious reduction in peak of heat release rate (HRR) in cone calorimeter tests (CCTs). Furthermore, the carbon residues after CCTs were characterized by scanning electron microscope (SEM), laser Raman spectroscopy (LRS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). It is demonstrated that both the titanium composition of the MXene structure and the characteristics of the two-dimensional material enhance the PLA/IFR/ MXene composite materials' ability to produce a dense barrier layer to resist burnout during thermal degradation.

关键词: MXene, Poly (lactic acid), Intumescent flame retardant, Synergistic effect

Abstract: The effect of Ti₃C₂ MXene nanosheets on the intumescent flame retardant (IFR) poly (lactic acid) (PLA) composites was investigated among a series of PLA/IFR/MXene, which were prepared by melt blending 0-2.0 wt% MXene, 10.0 wt%-12.0 wt% IFR and PLA together. The results of limiting oxygen index (LOI) and vertical burning (UL-94) discover that the combination of 0.5 wt% MXene and 11.5 wt% IFR synergistically improves the fire safety of PLA to reach UL-94 V-0 rating with LOI value of 33.0%. The PLA/IFR/MXene composites perform an obvious reduction in peak of heat release rate (HRR) in cone calorimeter tests (CCTs). Furthermore, the carbon residues after CCTs were characterized by scanning electron microscope (SEM), laser Raman spectroscopy (LRS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). It is demonstrated that both the titanium composition of the MXene structure and the characteristics of the two-dimensional material enhance the PLA/IFR/ MXene composite materials' ability to produce a dense barrier layer to resist burnout during thermal degradation.

Key words: MXene, Poly (lactic acid), Intumescent flame retardant, Synergistic effect

Haowei Huang, Dexuan Dong, Weijie Li, Xinya Zhang, Li Zhang, Ying Chen, Xinxin Sheng, Xiang Lu. Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites[J]. 中国化学工程学报, 2020, 28(7): 1981-1993.

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Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites

Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly (lactic acid) composites

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