文献类型：期刊文献

英文题名：High Tg Catalyst-Free Self-Healing Vitrimer Derived from Turpentine and its Application in Glass Fiber Reinforced Composites

作者：Xu, Yazhou[1] Dai, Fei[1] Zhang, Haibo[2] Zhang, Ji[1] Liao, Shengliang[1] Wang, Peng[1] Chen, Yuxiang[2] Wang, Zongde[1] Chen, Shangxing[1]

第一作者：Xu, Yazhou

机构：[1] College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of NFGA, Nanchang, 330045, China; [2] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, National Engineering Laboratory for Biomass Chemical Utilization, Nanjing, 210042, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240177094)

语种：英文

外文关键词：Amines - Epoxy resins - Fiber reinforced plastics - Potassium hydroxide - Recycling - Self-healing materials

摘要：Conventional glass fiber reinforced composites (GFRCs) are usually difficult to degrade and the matrix usually exhibit low Tg. To address this dilemma, a degradable catalyst-free self-healing vitrimer matrix with a high Tg was fabricated using turpentine-derived terpene maleic acid (TMA) as a curing agent and epoxidized menthane diamine (EMDA) with a tertiary amine structure as an epoxy resin. Due to the introduction of a rigid terpene ring skeleton of turpentine, EMDA?TMA vitrimer exhibits a Tg of up to 201.8°C. Due to the tertiary amine groups in the EMDA?TMA, the vitrimer can achieve self-healing and recycling properties by dynamic transesterification reaction without the addition of catalysts. More importantly, the EMDA?TMA?GF composite prepared using EMDA?TMA vitrimer as a matrix also shows a high Tg (223.6°C), and excellent mechanical properties. In addition, under the synergistic action of potassium hydroxide (KOH) and ethanolamine (EA), the EMDA?TMA?GF composite can be rapidly degraded by a KOH/EA solution to realize non-destructive recovery of glass fibers. ? 2024, The Authors. All rights reserved.