{"title":"高抗撕裂可回收碳纤维增强复合材料依靠编织交联聚氨酯","authors":"Shunli Wang, Yinsheng Li and Limei Tian*, ","doi":"10.1021/acs.nanolett.5c0060610.1021/acs.nanolett.5c00606","DOIUrl":null,"url":null,"abstract":"<p >The poor ductility and irreversible properties of covalently cross-linked polymers result in carbon fiber-reinforced polymer composites (CFRPs) with low tear resistance and nonrecyclability. In this work, a flexible woven polyurethane (WPPN<sub>n</sub>) prepared via a woven cross-linker was used for the first time as a binder for CFRPs. WPPN<sub>2000</sub> exhibited an ultrahigh strength of 50.4 MPa, a toughness of 267.2 MJ m<sup>–3</sup>, and an excellent fracture energy (211.6 kJ m<sup>–2</sup>). Simulation results and characterization tests confirmed the high energy dissipation of the woven network. The WPPN<sub>2000</sub>-CF composites achieved a tear resistance of 1004.5 kJ m<sup>–2</sup>, which is 16.4 times higher than that of the epoxy-CF composites (61.2 kJ m<sup>–2</sup>). In addition, due to the dynamic nature of the woven cross-linking, the carbon fiber can be recovered nondestructively using solvent. The woven cross-linking strategy provided new ideas for the design of carbon fiber adhesives.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 16","pages":"6606–6613 6606–6613"},"PeriodicalIF":9.1000,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly Tear-Resistant Recyclable Carbon Fiber Reinforced Composites Relying on Woven Cross-Linked Polyurethanes\",\"authors\":\"Shunli Wang, Yinsheng Li and Limei Tian*, \",\"doi\":\"10.1021/acs.nanolett.5c0060610.1021/acs.nanolett.5c00606\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The poor ductility and irreversible properties of covalently cross-linked polymers result in carbon fiber-reinforced polymer composites (CFRPs) with low tear resistance and nonrecyclability. In this work, a flexible woven polyurethane (WPPN<sub>n</sub>) prepared via a woven cross-linker was used for the first time as a binder for CFRPs. WPPN<sub>2000</sub> exhibited an ultrahigh strength of 50.4 MPa, a toughness of 267.2 MJ m<sup>–3</sup>, and an excellent fracture energy (211.6 kJ m<sup>–2</sup>). Simulation results and characterization tests confirmed the high energy dissipation of the woven network. The WPPN<sub>2000</sub>-CF composites achieved a tear resistance of 1004.5 kJ m<sup>–2</sup>, which is 16.4 times higher than that of the epoxy-CF composites (61.2 kJ m<sup>–2</sup>). In addition, due to the dynamic nature of the woven cross-linking, the carbon fiber can be recovered nondestructively using solvent. The woven cross-linking strategy provided new ideas for the design of carbon fiber adhesives.</p>\",\"PeriodicalId\":53,\"journal\":{\"name\":\"Nano Letters\",\"volume\":\"25 16\",\"pages\":\"6606–6613 6606–6613\"},\"PeriodicalIF\":9.1000,\"publicationDate\":\"2025-04-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.nanolett.5c00606\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.nanolett.5c00606","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
The poor ductility and irreversible properties of covalently cross-linked polymers result in carbon fiber-reinforced polymer composites (CFRPs) with low tear resistance and nonrecyclability. In this work, a flexible woven polyurethane (WPPNn) prepared via a woven cross-linker was used for the first time as a binder for CFRPs. WPPN2000 exhibited an ultrahigh strength of 50.4 MPa, a toughness of 267.2 MJ m–3, and an excellent fracture energy (211.6 kJ m–2). Simulation results and characterization tests confirmed the high energy dissipation of the woven network. The WPPN2000-CF composites achieved a tear resistance of 1004.5 kJ m–2, which is 16.4 times higher than that of the epoxy-CF composites (61.2 kJ m–2). In addition, due to the dynamic nature of the woven cross-linking, the carbon fiber can be recovered nondestructively using solvent. The woven cross-linking strategy provided new ideas for the design of carbon fiber adhesives.
期刊介绍：
Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including:
- Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale
- Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies
- Modeling and simulation of synthetic, assembly, and interaction processes
- Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance
- Applications of nanoscale materials in living and environmental systems
Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.
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