Highly Efficient MXene-Coated Flame Retardant Cotton Fabric for Electromagnetic Interference Shielding

作者：Wenhua Cheng, Yan Zhang, Wenxiang Tian, Jiajia Liu, Jingyi Lu, Bibo Wang, Weiyi Xing, Yuan Hu · 发表于：Industrial & Engineering Chemistry Research · 年份：2020 · DOI：10.1021/acs.iecr.0c02618 · 被引用次数：129 · 研究领域：Electromagnetic wave absorption materials、MXene and MAX Phase Materials、Flame retardant materials and properties

In this work, a highly efficient flame retardant and electromagnetic interference (EMI) shielding coating on cotton fabric was fabricated by a simple solution impregnation and dip-coating method, which involved three layers of polyacetimidate (PEI), ammonium polyphosphate (APP), and Ti 3 C 2 T x . When exposed directly to flame, the PEI/APP coating lead to a char layer resulting in self-extinguishing performance. Particularly, the cotton fabric coated by increasing amounts of Ti 3 C 2 T x gradually achieved EMI shielding performance. When the Ti 3 C 2 T x sheets content was 5.2 mg/cm 2, a high electrical conductivity of 670.3 S·m –1 and a EMI shielding effectiveness of 31.04 dB were achieved in the X-band with an absorption-dominated mechanism. Besides, such modified cotton fabric also has the potential to be used as an electrical heating material. The temperature could even reach up to about 64.3 °C under an applied voltage of just 4 V. Therefore, this work provided a feasible idea for preparing multifunctional fabrics.