Curing Kinetics of T300 Carbon Fiber/Epoxy Resin Prepregs Investigated by Differential Scanning Calorimetry

Curing Kinetics of T300 Carbon Fiber/Epoxy Resin Prepregs Investigated by Differential Scanning Calorimetry | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Curing Kinetics of T300 Carbon Fiber/Epoxy Resin Prepregs Investigated by Differential Scanning Calorimetry Xiaobao Zhu, Li Yang, Jing Chen, Kaihua Chen, Shenghui Guo This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7444741/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 23 Mar, 2026 Read the published version in Chemical Papers → Version 1 posted 5 You are reading this latest preprint version Abstract Understanding and quantifying the curing kinetics of carbon fiber/epoxy prepregs is critical for optimizing manufacturing processes and ensuring structural integrity in high-performance composites. In this work, the non-isothermal and isothermal curing behaviors of T300 carbon fiber/epoxy resin prepregs were systematically studied via differential scanning calorimetry (DSC). Activation energies and kinetic parameters were derived using the Kissinger, Ozawa, and Friedman model-free approaches, revealing both global and conversion-dependent kinetic behavior. The Málek method confirmed that the curing reaction follows an autocatalytic mechanism consistent with the Sestak–Berggren model. Under isothermal conditions, increasing temperature would significantly accelerate the curing rate, and the curing behavior was well captured by a diffusion-modified Kamal model. The combined kinetic modeling provides a comprehensive understanding of the reaction mechanism, enabling more accurate simulation of curing behavior and guiding the design of optimized curing cycles for aerospace-grade thermoset composites. T300 carbon fiber prepreg epoxy resin DSC kinetic properties Full Text Cite Share Download PDF Status: Published Journal Publication published 23 Mar, 2026 Read the published version in Chemical Papers → Version 1 posted Reviewers agreed at journal 28 Sep, 2025 Reviewers invited by journal 28 Sep, 2025 Editor invited by journal 31 Aug, 2025 Editor assigned by journal 26 Aug, 2025 First submitted to journal 25 Aug, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7444741","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":521687343,"identity":"c25ba4a7-9e5c-4480-a6f6-5f1cee5b3feb","order_by":0,"name":"Xiaobao Zhu","email":"","orcid":"","institution":"Kunming University of Science and Technology - Lianhua Campus: Kunming University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Xiaobao","middleName":"","lastName":"Zhu","suffix":""},{"id":521687344,"identity":"90039ff2-f2b2-4b1e-8607-d5ee32a726e5","order_by":1,"name":"Li 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