文献类型：期刊文献

英文题名：Highly Hydrogenated, Solvent-Resistant, Low-Temperature Conductive Nitrile Rubber for Multifunctional Sensors

作者：Gao, Xuehan[1,2,3]; Wang, Xuan[4]; Pan, Wenyu[6,7]; Wang, Muqun[5]; Wang, Sijia[8]; Li, Zequan[2,6,7]; Zhao, Shuangliang[1,2,3]; Xu, Xiaofei[4]

机构：[1] College of Chemistry and Chemical Engineering, Guangxi University, Guangxi, Nanning, 530004, China; [2] State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning, 530004, China; [3] Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China; [4] State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [5] School of Civil Engineering and Architecture, Guangxi University, Guangxi, Nanning, 530004, China; [6] School of Resources, Environment and Materials, Guangxi University, Guangxi, Nanning, 530004, China; [7] Guangxi Engineering and Technology Research Center for High-Quality Structural Panels from Biomass Wastes, Nanning, 530004, China; [8] Henan University of Chinese Medicine, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240417000)

语种：英文

外文关键词：Aerospace industry - Automotive industry - Crosslinking - Elastomers - Flexible electronics - Hydrogenation - Ionomers - Mineral oils - Petroleum tar - Rubber industry

摘要：Hydrogenated nitrile butadiene rubber (HNBR), known for its high performance, is widely used in seals for the automotive and aerospace industries. However, developing HNBR that combines high hydrogenation, excellent solvent resistance, and superior low-temperature performance remains a challenge. This study introduces a novel two-step process of "graft modification and catalytic hydrogenation" to enhance nitrile rubber (NBR) emulsions. Hydroxyethyl acrylate (HEA) was grafted onto NBR to improve its flexibility to -20 °C and enhance compatibility via hydroxyl group introduction. We achieved hydrogenation rates of up to 99% by precisely controlling intermediate formation during catalytic hydrogenation. This method synergistically enhances HNBR properties by combining hydrogen bonding from grafting and covalent crosslinking from hydrogenation. The resulting HNBR-HEA showed superior mechanical properties, with a tensile strength of 7.2 MPa—a 550% improvement over unmodified NBR—and excellent swelling resistance in toluene (207%; 92.07 × 10-3 mol/cm3). Additionally, when blended with polyaniline (PANI), HNBR-HEA exhibited impressive mechanical strength (3.3 MPa) and high electrical conductivity (0.97 S m-1), making it suitable for electroluminescent devices, wearable sensors, and Morse code-based emotional expression systems. This study not only presents an innovative method for enhancing rubber properties but also a promising approach for developing multifunctional flexible electronics. ? 2024, The Authors. All rights reserved.