Flame Retardancy, Thermal and Mechanical Properties of Novel Intumescent Flame Retardant/MXene/Poly(Vinyl Alcohol) Nanocomposites

Xiaofei Yan; Jie Fang; Jianjun Gu; Chenkai Zhu; Dongming Qi

doi:10.3390/nano12030477

Flame Retardancy, Thermal and Mechanical Properties of Novel Intumescent Flame Retardant/MXene/Poly(Vinyl Alcohol) Nanocomposites

Nanomaterials (Basel). 2022 Jan 29;12(3):477. doi: 10.3390/nano12030477.

Authors

Xiaofei Yan^{1

2

3

4}, Jie Fang^{1

4}, Jianjun Gu², Chenkai Zhu⁵, Dongming Qi^{1

4}

Affiliations

¹ Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Zhejiang Sci-Tech University, Hangzhou 310018, China.
² Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
³ Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China.
⁴ College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou 310018, China.
⁵ Ningbo Institute of Technology, Beihang University, Ningbo 315832, China.

Abstract

Poly(vinylphosphonic acid) (PVPA) and polyethylenepolyamine (PEPA) are used as novel intumescent flame retardants to improve the properties of MXene (2D Ti₃C₂T_x)/poly(vinyl alcohol) (PVA) nanocomposites. We investigated the flame-retardant properties, thermal stability, and mechanical properties of MXene/PVA nanocomposites. The results show that MXene was homogeneously dispersed in the PVA matrix containing PVPA and PEPA. PVPA and PEPA effectively improved the flame-retardant properties of MXene/PVA nanocomposites and they did not obviously change the thermal degradation of the MXene/PVA nanocomposites. Moreover, MXene improved the thermal stability of the PVA matrix. The elongation at break of MXene/PVA nanocomposites reached its maximum when the MXene mass fraction was 1.0 wt.%, regardless of whether PVPA and PEPA were present in the PVA matrix, whereas the tensile strength and Young's modulus of MXene/PVA nanocomposites increased with the increase in MXene content in the PVA matrix.

Keywords: MXene/PVA nanocomposites; flame-retardant properties; poly(vinylphosphonic acid); polyethylenepolyamine.

Abstract

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