Boosting fire safety and mechanical performance of thermoplastic polyurethane by the face-to-face two-dimensional phosphorene/MXene architecture

作     者：Yong Luo Yuhui Xie Wei Geng Junhan Chu Hua Wu Delong Xie Xinxin Sheng Yi Mei Yong Luo;Yuhui Xie;Wei Geng;Junhan Chu;Hua Wu;Delong Xie;Xinxin Sheng;Yi Mei

作者机构：Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus MaterialsThe Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan ProvinceFaculty of Chemical EngineeringKunming University of Science and TechnologyKunming 650500China Guangdong Provincial Key Laboratory of Functional Soft Condensed MatterSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China Department of Chemistry and Applied BiosciencesInstitute for Chemical and BioengineeringETH ZurichZurich 8093Switzerland 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第129卷第34期

页      面：27-39页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(No.21908031) Scientific Research Funds of Yunnan Education Department(No.2021Y111) 

主　　题：Thermoplastic polyurethane elastomer Black phosphorus MXene Mechanical properties Flame retardancy 

摘      要：Black phosphorus(BP), as one of the most promising fillers for flame retarding polymer, has been seriously limited in practical application, due to the agglomeration and poor structural stability ***, the BP was modified by MXene and polydopamine(PDA) via ultrasonication and dopamine modification strategy to improve the structural stability and dispersibility in the matrix. Then, the obtained(BP-MXene@PDA) nanohybrid was employed to promote the mechanical performance, thermal stability,and flame retardancy of thermoplastic polyurethane elastomer(TPU). The resultant TPU composite containing 2 wt.% of BP1-MXene2@PDA showed a 19.2% improvement in the tensile strength and a 13.8%increase in the elongation at break compared to those of the pure TPU. The thermogravimetric analysis suggested that BP-MXene@PDA clearly enhances the thermal stability of TPU composites. Furthermore,the introduction of the BP-MXene@PDA nanohybrids could considerably improve the flame retardancy of TPU composite, i.e., 64.2% and 27.3% decrease in peak heat release rate and total heat release, respectively. The flame-retardant mechanisms of TPU/BP-MXene@PDA in the gas phase and condensed phase were investigated systematically. This work provides a novel strategy to simultaneously enhance the fire safety and mechanical properties of TPU, thus expanding its industrial applications.