文献类型：期刊文献

英文题名：Production, Thermal Recycling, and Application of Cardanol-Based Polyurethane Foam with Phenol-Carbamate Bonds

作者：Zhao, Baozheng[1,2] Song, Fei[1] Tan, Li[1] Yang, Rui[2] Xue, Yijiao[1] Pan, Zheng[1] Zhang, Meng[1,2] Zhou, Yonghong[1,2]

第一作者：Zhao, Baozheng

机构：[1] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry [CAF], Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing, 210042, China; [2] Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240048227)

语种：英文

外文关键词：Hot pressing - Industrial research - Phenols - Recycling - Rigid foamed plastics - Scalability - Tensile strength - Wood products

摘要：The economic processing, sustainable recycling, and environmentally friendly application of polyurethane (PU) foams are important issues that need to be addressed urgently. In this study, we propose a strategy for the comprehensive utilization of cardanol and cashew shells to design cardanol-based PU (CPU) foams and wood-plastic films that can be recycled and reused. This research starts with the preparation of cardanol-based polyphenols derived from cardanol and guaiacol by Friedel-Crafts alkylation reaction. Subsequently, the cardanol-based polyphenols are employed to produce CPU foams containing phenol-carbamate bonds. These CPU foams can be hot pressed into transparent and smooth CPU films. The recycled CPU films have a tensile strength of up to 30.5 MPa and can be re-formed many times. Finally, we demonstrate an efficient and scalable method of producing greener wood-plastic composites by integrating CPU foam with cashew shell waste. Through a simple hot-pressing process, these materials can be fused together to form CPU-Wood films with repairability, reprocessibility and formability properties. This research paves the way for large-scale industrial production of recyclable and regenerative bio-based foams, making effective use of waste materials to achieve environmentally friendly production processes. ? 2024, The Authors. All rights reserved.