Research on the Preparation and Properties of Biphenol Liquid Crystal Epoxy Resin

Research on the Preparation and Properties of Biphenol Liquid Crystal Epoxy Resin | 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 Research on the Preparation and Properties of Biphenol Liquid Crystal Epoxy Resin Kaijie Yang, Jiachun Zhong, Zejun Pu, Jiahong Pang, Yuhao Yang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6817866/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 04 Oct, 2025 Read the published version in Journal of Polymer Research → Version 1 posted 5 You are reading this latest preprint version Abstract Various crystalline epoxy resins with liquid crystal properties are widely used as electronic packaging materials. However, most liquid crystals have specific molecular structures, and the synthesis methods and processes used are complicated and costly.In this study, 4,4′-biphenol and epichlorohydrin were used as synthetic monomers to synthesize oligomeric 4,4′-diglycidyl ether of biphenyl (BP) epoxy resin containing biphenyl moieties. Moreover, the synthesis method was optimized to obtain a higher-quality product. The thermodynamic properties of the new product and the cured product of E51 epoxy resin were compared to highlight the advantages of liquid crystal epoxy resins.The results showed that the epoxy equivalent of the liquid crystal epoxy resin obtained by the optimized synthesis method was 184.4 g/eq, which was lower than that of the liquid crystal epoxy resin synthesized by the traditional one-step method (200.2 g/eq). Compared with the cured sample of E51, its glass transition temperature (Tg) reached 277.2°C, the initial storage modulus was 2308 MPa, and the initial decomposition temperature reached 389.85°C. Therefore, it can be concluded that optimizing the synthesis steps can improve the performance of liquid crystal epoxy resins. And compared with ordinary epoxy resins, liquid crystal epoxy resins have more excellent performance. The research results provide an optimization idea for the synthesis method of liquid crystal epoxy resins and provide data support for its application through the study of curing kinetics. 4 4′-biphenol E51 epoxy resins liquid crystal epoxy resins Full Text Supplementary Files GraphicalAbstractImage.docx Cite Share Download PDF Status: Published Journal Publication published 04 Oct, 2025 Read the published version in Journal of Polymer Research → Version 1 posted Reviewers agreed at journal 11 Jul, 2025 Reviewers invited by journal 09 Jul, 2025 Editor invited by journal 28 Jun, 2025 Editor assigned by journal 05 Jun, 2025 First submitted to journal 04 Jun, 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. 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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-6817866","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":482764946,"identity":"b4684cf8-af3d-4239-9e4d-0d4ce417083a","order_by":0,"name":"Kaijie Yang","email":"","orcid":"","institution":"","correspondingAuthor":false,"prefix":"","firstName":"Kaijie","middleName":"","lastName":"Yang","suffix":""},{"id":482764947,"identity":"4819d2ce-fc7d-4355-a3d7-bc33bffc59c5","order_by":1,"name":"Jiachun 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However, most liquid crystals have specific molecular structures, and the synthesis methods and processes used are complicated and costly.In this study, 4,4\u0026prime;-biphenol and epichlorohydrin were used as synthetic monomers to synthesize oligomeric 4,4\u0026prime;-diglycidyl ether of biphenyl (BP) epoxy resin containing biphenyl moieties. Moreover, the synthesis method was optimized to obtain a higher-quality product. The thermodynamic properties of the new product and the cured product of E51 epoxy resin were compared to highlight the advantages of liquid crystal epoxy resins.The results showed that the epoxy equivalent of the liquid crystal epoxy resin obtained by the optimized synthesis method was 184.4 g/eq, which was lower than that of the liquid crystal epoxy resin synthesized by the traditional one-step method (200.2 g/eq). Compared with the cured sample of E51, its glass transition temperature (Tg) reached 277.2\u0026deg;C, the initial storage modulus was 2308 MPa, and the initial decomposition temperature reached 389.85\u0026deg;C. Therefore, it can be concluded that optimizing the synthesis steps can improve the performance of liquid crystal epoxy resins. And compared with ordinary epoxy resins, liquid crystal epoxy resins have more excellent performance. The research results provide an optimization idea for the synthesis method of liquid crystal epoxy resins and provide data support for its application through the study of curing kinetics.\u003c/p\u003e","manuscriptTitle":"Research on the Preparation and Properties of Biphenol Liquid Crystal Epoxy Resin","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-07-11 07:57:37","doi":"10.21203/rs.3.rs-6817866/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2025-07-11T12:18:37+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-07-09T06:56:57+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"Journal of Polymer Research","date":"2025-06-28T18:57:50+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-06-06T02:22:44+00:00","index":"","fulltext":""},{"type":"submitted","content":"Journal of Polymer Research","date":"2025-06-05T00:53:36+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"journal-of-polymer-research","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"jpol","sideBox":"Learn more about [Journal of Polymer Research](https://www.springer.com/journal/10965)","snPcode":"10965","submissionUrl":"https://www.editorialmanager.com/jpol/","title":"Journal of Polymer Research","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"15af44da-fef6-43a2-9b77-50d224557e3c","owner":[],"postedDate":"July 11th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[],"tags":[],"updatedAt":"2025-10-06T16:06:48+00:00","versionOfRecord":{"articleIdentity":"rs-6817866","link":"https://doi.org/10.1007/s10965-025-04600-z","journal":{"identity":"journal-of-polymer-research","isVorOnly":false,"title":"Journal of Polymer Research"},"publishedOn":"2025-10-04 15:57:40","publishedOnDateReadable":"October 4th, 2025"},"versionCreatedAt":"2025-07-11 07:57:37","video":"","vorDoi":"10.1007/s10965-025-04600-z","vorDoiUrl":"https://doi.org/10.1007/s10965-025-04600-z","workflowStages":[]},"version":"v1","identity":"rs-6817866","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6817866","identity":"rs-6817866","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}