Formation mechanism of wood rotary welding interface by various additives

Formation mechanism of wood rotary welding interface by various additives | 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 Formation mechanism of wood rotary welding interface by various additives Jiawei Wu:, Zhongfeng Zhang, Jiarong He, Yang Yang, Lei Zhang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3926625/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In order to improve the interfacial properties of rotary welding of wood, additive pre-treatments for wooden tenons were conducted as follows: immersion in oleic acid-modified calcium carbonate whiskers (group CA), no treatment (group DZ), immersion in CuSO 4 and Na 2 SO 3 for a duration of 8 hours (group CN), and addition of calcium carbonate in the pre-drilled holes (group L). The scanning electron microscopy (SEM), mechanical properties tests, Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), and pyrolysis gas chromatography-mass spectrometry tests (Py-GC/MS) were performed to evaluate the properties of the welded interfaces. After additive treatment, the welded interface exhibits a layered structure resembling grout, with an increased relative content of cellulose and lignin on the interface, indicating enhanced intramolecular cohesion. The generation of high molecular weight aromatic methoxy groups confirms the intermolecular connection. As a result, the mechanical properties and water resistance of the rotational welded interface are significantly improved. With the exception of the CN group, all specimens meet the strength requirement (≥ 0.7 MPa) specified in GB/T 14018 − 2009 "Test Method for Wood Nail Grip Strength"(in China), and the CA group exhibits the most exceptional welding interface performance. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-3926625","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":271308594,"identity":"047ee02f-f629-479c-b4e2-a1c49ea2af49","order_by":0,"name":"Jiawei Wu:","email":"","orcid":"","institution":"","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Jiawei","middleName":"","lastName":"Wu:","suffix":""},{"id":271308595,"identity":"4dea4d78-e500-42fe-88fa-67e30689b49a","order_by":1,"name":"Zhongfeng 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The scanning electron microscopy (SEM), mechanical properties tests, Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), and pyrolysis gas chromatography-mass spectrometry tests (Py-GC/MS) were performed to evaluate the properties of the welded interfaces. After additive treatment, the welded interface exhibits a layered structure resembling grout, with an increased relative content of cellulose and lignin on the interface, indicating enhanced intramolecular cohesion. The generation of high molecular weight aromatic methoxy groups confirms the intermolecular connection. As a result, the mechanical properties and water resistance of the rotational welded interface are significantly improved. 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