Mengyuan Hao , Jiaming Yang , Chengxi Zhu , Yonggang Zhang , Xin Qian , Jianhai Zhi , Li Liu , Yudong Huang
{"title":"高性能环氧热固性和CFRP复合材料“章鱼”型POSS纳米结构触发互穿网络的构建","authors":"Mengyuan Hao , Jiaming Yang , Chengxi Zhu , Yonggang Zhang , Xin Qian , Jianhai Zhi , Li Liu , Yudong Huang","doi":"10.1016/j.compscitech.2025.111273","DOIUrl":null,"url":null,"abstract":"<div><div>Simultaneously toughening and strengthening epoxy thermosets remains the critical challenge in the advancement of high-performance matrices used in advanced carbon fiber reinforced polymers (CFRPs). In this research, a series of “octopus\"-like nano-POSS fillers with diverse side-chain structures were synthesized and incorporated as the toughening core in an in-situ interpenetrating network (IPN). This approach aims to achieve synergistic toughening and strengthening through multiple mechanisms, primarily including particle debonding and plastic shear deformation. Firstly, the critical impacts of side-chain structures in POSS on structure-related parameters were systematically investigated, with particular emphasis on physical entanglement and spatial hindrance. It was confirmed that extended flexible linear segments within POSS promoted robust physical entanglement, effectively increasing the cross-link density of the system and thereby enhancing its energy absorption capabilities. As a result, the maximum tensile strength and impact toughness of the matrix reached 105 MPa and 40.3 kJ/m<sup>2</sup>, respectively, representing a 19.3 % increase in tensile strength and a remarkable 155.1 % improvement in impact toughness compared to pure epoxy. Significant improvements in flexural properties, impact toughness, and interlaminar shear strength (ILSS) of CFRPs have been demonstrated, effectively validating their performance enhancements. Specifically, for the E/V/OCPC composite, the flexural strength and impact toughness were elevated to 473 MPa and 53.8 kJ/m<sup>2</sup>, marking respective improvements of 20.1 % and 47.0 % over EP composites. The considerable enhancement in the properties of the matrix and composites underscores the efficacy of constructing homogeneous synergistic toughening systems and optimizing the physical entanglement of nanofillers in developing advanced composites with superior performance.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111273"},"PeriodicalIF":9.8000,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Construction of “octopus\\\"-like POSS nanostructure triggerring interpenetrating network for high-performance epoxy thermosets and CFRP composites\",\"authors\":\"Mengyuan Hao , Jiaming Yang , Chengxi Zhu , Yonggang Zhang , Xin Qian , Jianhai Zhi , Li Liu , Yudong Huang\",\"doi\":\"10.1016/j.compscitech.2025.111273\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Simultaneously toughening and strengthening epoxy thermosets remains the critical challenge in the advancement of high-performance matrices used in advanced carbon fiber reinforced polymers (CFRPs). In this research, a series of “octopus\\\"-like nano-POSS fillers with diverse side-chain structures were synthesized and incorporated as the toughening core in an in-situ interpenetrating network (IPN). This approach aims to achieve synergistic toughening and strengthening through multiple mechanisms, primarily including particle debonding and plastic shear deformation. Firstly, the critical impacts of side-chain structures in POSS on structure-related parameters were systematically investigated, with particular emphasis on physical entanglement and spatial hindrance. It was confirmed that extended flexible linear segments within POSS promoted robust physical entanglement, effectively increasing the cross-link density of the system and thereby enhancing its energy absorption capabilities. As a result, the maximum tensile strength and impact toughness of the matrix reached 105 MPa and 40.3 kJ/m<sup>2</sup>, respectively, representing a 19.3 % increase in tensile strength and a remarkable 155.1 % improvement in impact toughness compared to pure epoxy. Significant improvements in flexural properties, impact toughness, and interlaminar shear strength (ILSS) of CFRPs have been demonstrated, effectively validating their performance enhancements. Specifically, for the E/V/OCPC composite, the flexural strength and impact toughness were elevated to 473 MPa and 53.8 kJ/m<sup>2</sup>, marking respective improvements of 20.1 % and 47.0 % over EP composites. The considerable enhancement in the properties of the matrix and composites underscores the efficacy of constructing homogeneous synergistic toughening systems and optimizing the physical entanglement of nanofillers in developing advanced composites with superior performance.</div></div>\",\"PeriodicalId\":283,\"journal\":{\"name\":\"Composites Science and Technology\",\"volume\":\"270 \",\"pages\":\"Article 111273\"},\"PeriodicalIF\":9.8000,\"publicationDate\":\"2025-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Composites Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0266353825002416\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0266353825002416","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Construction of “octopus"-like POSS nanostructure triggerring interpenetrating network for high-performance epoxy thermosets and CFRP composites
Simultaneously toughening and strengthening epoxy thermosets remains the critical challenge in the advancement of high-performance matrices used in advanced carbon fiber reinforced polymers (CFRPs). In this research, a series of “octopus"-like nano-POSS fillers with diverse side-chain structures were synthesized and incorporated as the toughening core in an in-situ interpenetrating network (IPN). This approach aims to achieve synergistic toughening and strengthening through multiple mechanisms, primarily including particle debonding and plastic shear deformation. Firstly, the critical impacts of side-chain structures in POSS on structure-related parameters were systematically investigated, with particular emphasis on physical entanglement and spatial hindrance. It was confirmed that extended flexible linear segments within POSS promoted robust physical entanglement, effectively increasing the cross-link density of the system and thereby enhancing its energy absorption capabilities. As a result, the maximum tensile strength and impact toughness of the matrix reached 105 MPa and 40.3 kJ/m2, respectively, representing a 19.3 % increase in tensile strength and a remarkable 155.1 % improvement in impact toughness compared to pure epoxy. Significant improvements in flexural properties, impact toughness, and interlaminar shear strength (ILSS) of CFRPs have been demonstrated, effectively validating their performance enhancements. Specifically, for the E/V/OCPC composite, the flexural strength and impact toughness were elevated to 473 MPa and 53.8 kJ/m2, marking respective improvements of 20.1 % and 47.0 % over EP composites. The considerable enhancement in the properties of the matrix and composites underscores the efficacy of constructing homogeneous synergistic toughening systems and optimizing the physical entanglement of nanofillers in developing advanced composites with superior performance.
期刊介绍:
Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites.
Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.