{"title":"通过机械拉伸和压缩试验以及 X 射线 CT 成像研究环氧树脂单体的变形和断裂情况","authors":"Kazuma Aragishi, Yoshihiro Takeda, Yasuhito Suzuki, Akikazu Matsumoto","doi":"10.1038/s41428-023-00872-8","DOIUrl":null,"url":null,"abstract":"As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths are used as column fillers in HPLC, separators in lithium-ion batteries, and precursor polymers for monolith adhesion and co-continuous network polymer fabrication. Due to their unique mechanical properties and fracture behavior, epoxy monoliths can incur large deformation and are different from the bulk thermoset of epoxy resins that exhibit hard and brittle features. In this study, we prepared an epoxy monolith using 2,2’-bis(4’-glycidyloxaphenyl)propane (BADGE) and tripropylene glycol diglycidyl ether (TPGD) as epoxy resins, 4,4’-methylenebis(cyclohexylamine) (BACM) as a crosslinker, and poly(ethylene glycol) (PEG) as a porogen, and TPGD-induced effects on the pore structure and properties of the obtained monoliths were investigated. To clarify the relationship between the pore structure and the mechanical properties of the monolith, scanning electron microscopy (SEM) observations and tensile and compression tests were performed. In addition, X-ray CT imaging nondestructively revealed a change in the inner porous structure of the monolith after a large deformation occurred under various compression conditions. We clarified the effects of the TPGD addition on the monolith structure and the mechanical properties with tensile and compressive deformation. As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths exhibit unique mechanical properties and fracture behavior different from the bulk thermoset of epoxy resins. In this article, we describe the thermal properties, pore structures, and mechanical properties of epoxy resins with tensile and compressive deformation of the monoliths. In addition, a change in the inner porous structure after large deformation was nondestructively observed by X-ray CT imaging.","PeriodicalId":20302,"journal":{"name":"Polymer Journal","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41428-023-00872-8.pdf","citationCount":"0","resultStr":"{\"title\":\"Study on the deformation and fracture of epoxy monoliths through mechanical tensile and compressive tests and X-ray CT imaging\",\"authors\":\"Kazuma Aragishi, Yoshihiro Takeda, Yasuhito Suzuki, Akikazu Matsumoto\",\"doi\":\"10.1038/s41428-023-00872-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths are used as column fillers in HPLC, separators in lithium-ion batteries, and precursor polymers for monolith adhesion and co-continuous network polymer fabrication. Due to their unique mechanical properties and fracture behavior, epoxy monoliths can incur large deformation and are different from the bulk thermoset of epoxy resins that exhibit hard and brittle features. In this study, we prepared an epoxy monolith using 2,2’-bis(4’-glycidyloxaphenyl)propane (BADGE) and tripropylene glycol diglycidyl ether (TPGD) as epoxy resins, 4,4’-methylenebis(cyclohexylamine) (BACM) as a crosslinker, and poly(ethylene glycol) (PEG) as a porogen, and TPGD-induced effects on the pore structure and properties of the obtained monoliths were investigated. To clarify the relationship between the pore structure and the mechanical properties of the monolith, scanning electron microscopy (SEM) observations and tensile and compression tests were performed. In addition, X-ray CT imaging nondestructively revealed a change in the inner porous structure of the monolith after a large deformation occurred under various compression conditions. We clarified the effects of the TPGD addition on the monolith structure and the mechanical properties with tensile and compressive deformation. As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths exhibit unique mechanical properties and fracture behavior different from the bulk thermoset of epoxy resins. In this article, we describe the thermal properties, pore structures, and mechanical properties of epoxy resins with tensile and compressive deformation of the monoliths. 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Study on the deformation and fracture of epoxy monoliths through mechanical tensile and compressive tests and X-ray CT imaging
As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths are used as column fillers in HPLC, separators in lithium-ion batteries, and precursor polymers for monolith adhesion and co-continuous network polymer fabrication. Due to their unique mechanical properties and fracture behavior, epoxy monoliths can incur large deformation and are different from the bulk thermoset of epoxy resins that exhibit hard and brittle features. In this study, we prepared an epoxy monolith using 2,2’-bis(4’-glycidyloxaphenyl)propane (BADGE) and tripropylene glycol diglycidyl ether (TPGD) as epoxy resins, 4,4’-methylenebis(cyclohexylamine) (BACM) as a crosslinker, and poly(ethylene glycol) (PEG) as a porogen, and TPGD-induced effects on the pore structure and properties of the obtained monoliths were investigated. To clarify the relationship between the pore structure and the mechanical properties of the monolith, scanning electron microscopy (SEM) observations and tensile and compression tests were performed. In addition, X-ray CT imaging nondestructively revealed a change in the inner porous structure of the monolith after a large deformation occurred under various compression conditions. We clarified the effects of the TPGD addition on the monolith structure and the mechanical properties with tensile and compressive deformation. As porous polymer materials with continuous epoxy skeletons and pores, epoxy monoliths exhibit unique mechanical properties and fracture behavior different from the bulk thermoset of epoxy resins. In this article, we describe the thermal properties, pore structures, and mechanical properties of epoxy resins with tensile and compressive deformation of the monoliths. In addition, a change in the inner porous structure after large deformation was nondestructively observed by X-ray CT imaging.
期刊介绍:
Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews.
Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below:
Polymer synthesis and reactions
Polymer structures
Physical properties of polymers
Polymer surface and interfaces
Functional polymers
Supramolecular polymers
Self-assembled materials
Biopolymers and bio-related polymer materials
Polymer engineering.