Interlaminar shear properties of glulam made of heat-treated laminates
Heat-treated wood is environmentally friendly relative to other modified woods, and if processed into glulam, it is expected to optimize not only its durability and stability in color and dimension but also the large size application of glulam. Interlayer interface is the key link where the bonding...
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| Veröffentlicht in: | European journal of wood and wood products 2023-08, Vol.81 (4), p.887-896 |
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| creator | Liu, Jiamin Wang, Chaojie Yang, Xiaojun Bai, Xinchun Tan, Yongjie Kong, Xiaohui |
| description | Heat-treated wood is environmentally friendly relative to other modified woods, and if processed into glulam, it is expected to optimize not only its durability and stability in color and dimension but also the large size application of glulam. Interlayer interface is the key link where the bonding quality of glulam is chiefly determined. In this study, Mongolian Scots pine (
Pinus sylvestris var. Mongolica
) laminates with varying degrees of heat treatment were respectively bonded by one-component polyurethane adhesive (PU) and aqueous polymer isocyanate adhesive (API). In order to explore the effect of heat treatment on glulam interface, the shear test method was taken to systematically examine the interlaminar bonding properties. The result showed that high-temperature heat treatment reduced the hydrophilic groups in wood and decreased the surface wettability, and indicated a negative correlation between heat treatment temperature and surface wettability. Planing resulted in a flatter surface and reduced the adverse effect of brittle layer on the surface, thus improving the surface wettability. Deep heat treatment (215 °C) was not ideal for the interlaminar shear properties of glulam. Planing the laminate surface before gluing significantly improved the interlaminar shear properties. A planing thickness of 0.6 mm was able to obtain a better bonding property. PU was more suitable for gluing heat-treated laminates compared with API. Under a high humidity environment, the interlaminar shear property of heat-treated glulam was relatively stable. The interlaminar shear strength of glulam with a higher heat treatment temperature was less influenced by environmental humidity. Moderate heat treatment (180 °C) increased the crystallinity and expanded the crystallization region of wood, which was conducive to improve the shear properties of glulam short beams. Deep heat treatment made the wood fibers hard and brittle, and the shear strength of short beams decreased slightly. |
| doi_str_mv | 10.1007/s00107-023-01934-7 |
| format | Article |
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Pinus sylvestris var. Mongolica
) laminates with varying degrees of heat treatment were respectively bonded by one-component polyurethane adhesive (PU) and aqueous polymer isocyanate adhesive (API). In order to explore the effect of heat treatment on glulam interface, the shear test method was taken to systematically examine the interlaminar bonding properties. The result showed that high-temperature heat treatment reduced the hydrophilic groups in wood and decreased the surface wettability, and indicated a negative correlation between heat treatment temperature and surface wettability. Planing resulted in a flatter surface and reduced the adverse effect of brittle layer on the surface, thus improving the surface wettability. Deep heat treatment (215 °C) was not ideal for the interlaminar shear properties of glulam. Planing the laminate surface before gluing significantly improved the interlaminar shear properties. A planing thickness of 0.6 mm was able to obtain a better bonding property. PU was more suitable for gluing heat-treated laminates compared with API. Under a high humidity environment, the interlaminar shear property of heat-treated glulam was relatively stable. The interlaminar shear strength of glulam with a higher heat treatment temperature was less influenced by environmental humidity. Moderate heat treatment (180 °C) increased the crystallinity and expanded the crystallization region of wood, which was conducive to improve the shear properties of glulam short beams. Deep heat treatment made the wood fibers hard and brittle, and the shear strength of short beams decreased slightly.</description><identifier>ISSN: 0018-3768</identifier><identifier>EISSN: 1436-736X</identifier><identifier>DOI: 10.1007/s00107-023-01934-7</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Application programming interface ; Biomedical and Life Sciences ; Brittleness ; Ceramics ; Composites ; Crystallization ; Fibers ; Glass ; Gluing ; Glulam ; Heat treating ; Heat treatment ; Heat treatments ; High temperature ; Humidity ; Interfacial shear strength ; Interlayers ; Isocyanates ; Laminates ; Life Sciences ; Machines ; Manufacturing ; Natural Materials ; Original Article ; Pine trees ; Pinus sylvestris ; Planing ; Polymers ; Polyurethane ; Polyurethane resins ; Processes ; Shear properties ; Shear strength ; Shear tests ; Wettability ; Wood ; Wood fibers ; Wood Science & Technology</subject><ispartof>European journal of wood and wood products, 2023-08, Vol.81 (4), p.887-896</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c270t-25604d501ac14d2d83da118ab8d39c4fe0e46215c95fb6bf08130fe0611df4c23</cites><orcidid>0000-0002-0931-9857</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00107-023-01934-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00107-023-01934-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Liu, Jiamin</creatorcontrib><creatorcontrib>Wang, Chaojie</creatorcontrib><creatorcontrib>Yang, Xiaojun</creatorcontrib><creatorcontrib>Bai, Xinchun</creatorcontrib><creatorcontrib>Tan, Yongjie</creatorcontrib><creatorcontrib>Kong, Xiaohui</creatorcontrib><title>Interlaminar shear properties of glulam made of heat-treated laminates</title><title>European journal of wood and wood products</title><addtitle>Eur. J. Wood Prod</addtitle><description>Heat-treated wood is environmentally friendly relative to other modified woods, and if processed into glulam, it is expected to optimize not only its durability and stability in color and dimension but also the large size application of glulam. Interlayer interface is the key link where the bonding quality of glulam is chiefly determined. In this study, Mongolian Scots pine (
Pinus sylvestris var. Mongolica
) laminates with varying degrees of heat treatment were respectively bonded by one-component polyurethane adhesive (PU) and aqueous polymer isocyanate adhesive (API). In order to explore the effect of heat treatment on glulam interface, the shear test method was taken to systematically examine the interlaminar bonding properties. The result showed that high-temperature heat treatment reduced the hydrophilic groups in wood and decreased the surface wettability, and indicated a negative correlation between heat treatment temperature and surface wettability. Planing resulted in a flatter surface and reduced the adverse effect of brittle layer on the surface, thus improving the surface wettability. Deep heat treatment (215 °C) was not ideal for the interlaminar shear properties of glulam. Planing the laminate surface before gluing significantly improved the interlaminar shear properties. A planing thickness of 0.6 mm was able to obtain a better bonding property. PU was more suitable for gluing heat-treated laminates compared with API. Under a high humidity environment, the interlaminar shear property of heat-treated glulam was relatively stable. The interlaminar shear strength of glulam with a higher heat treatment temperature was less influenced by environmental humidity. Moderate heat treatment (180 °C) increased the crystallinity and expanded the crystallization region of wood, which was conducive to improve the shear properties of glulam short beams. Deep heat treatment made the wood fibers hard and brittle, and the shear strength of short beams decreased slightly.</description><subject>Application programming interface</subject><subject>Biomedical and Life Sciences</subject><subject>Brittleness</subject><subject>Ceramics</subject><subject>Composites</subject><subject>Crystallization</subject><subject>Fibers</subject><subject>Glass</subject><subject>Gluing</subject><subject>Glulam</subject><subject>Heat treating</subject><subject>Heat treatment</subject><subject>Heat treatments</subject><subject>High temperature</subject><subject>Humidity</subject><subject>Interfacial shear strength</subject><subject>Interlayers</subject><subject>Isocyanates</subject><subject>Laminates</subject><subject>Life Sciences</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Natural Materials</subject><subject>Original Article</subject><subject>Pine trees</subject><subject>Pinus sylvestris</subject><subject>Planing</subject><subject>Polymers</subject><subject>Polyurethane</subject><subject>Polyurethane resins</subject><subject>Processes</subject><subject>Shear properties</subject><subject>Shear strength</subject><subject>Shear tests</subject><subject>Wettability</subject><subject>Wood</subject><subject>Wood fibers</subject><subject>Wood Science & Technology</subject><issn>0018-3768</issn><issn>1436-736X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9UMFKAzEQDaJgqf0BTwueozOZ7CY9SrFaKHhR8BbSTVJb2t2apAf_3tQteHMOM8zMe2-Gx9gtwj0CqIcEgKA4COKAU5JcXbARSmq4oubjko3KXnNSjb5mk5S2UIJQCqIRmy-67OPO7jedjVX69CUfYn_wMW98qvpQrXfHsq721vlTWxCZ51iyd9XAyz7dsKtgd8lPznXM3udPb7MXvnx9Xswel7wVCjIXdQPS1YC2RemE0-QsorYr7WjayuDBy0Zg3U7rsGpWATQSlGmD6IJsBY3Z3aBbfvw6-pTNtj_Grpw0QhNqrUGdUGJAtbFPKfpgDnGzt_HbIJiTZWawzBTLzK9lRhUSDaRUwN3axz_pf1g_-r5t5Q</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Liu, Jiamin</creator><creator>Wang, Chaojie</creator><creator>Yang, Xiaojun</creator><creator>Bai, Xinchun</creator><creator>Tan, Yongjie</creator><creator>Kong, Xiaohui</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><orcidid>https://orcid.org/0000-0002-0931-9857</orcidid></search><sort><creationdate>20230801</creationdate><title>Interlaminar shear properties of glulam made of heat-treated laminates</title><author>Liu, Jiamin ; Wang, Chaojie ; Yang, Xiaojun ; Bai, Xinchun ; Tan, Yongjie ; Kong, Xiaohui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c270t-25604d501ac14d2d83da118ab8d39c4fe0e46215c95fb6bf08130fe0611df4c23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Application programming interface</topic><topic>Biomedical and Life Sciences</topic><topic>Brittleness</topic><topic>Ceramics</topic><topic>Composites</topic><topic>Crystallization</topic><topic>Fibers</topic><topic>Glass</topic><topic>Gluing</topic><topic>Glulam</topic><topic>Heat treating</topic><topic>Heat treatment</topic><topic>Heat treatments</topic><topic>High temperature</topic><topic>Humidity</topic><topic>Interfacial shear strength</topic><topic>Interlayers</topic><topic>Isocyanates</topic><topic>Laminates</topic><topic>Life Sciences</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Natural Materials</topic><topic>Original Article</topic><topic>Pine trees</topic><topic>Pinus sylvestris</topic><topic>Planing</topic><topic>Polymers</topic><topic>Polyurethane</topic><topic>Polyurethane resins</topic><topic>Processes</topic><topic>Shear properties</topic><topic>Shear strength</topic><topic>Shear tests</topic><topic>Wettability</topic><topic>Wood</topic><topic>Wood fibers</topic><topic>Wood Science & Technology</topic><toplevel>online_resources</toplevel><creatorcontrib>Liu, Jiamin</creatorcontrib><creatorcontrib>Wang, Chaojie</creatorcontrib><creatorcontrib>Yang, Xiaojun</creatorcontrib><creatorcontrib>Bai, Xinchun</creatorcontrib><creatorcontrib>Tan, Yongjie</creatorcontrib><creatorcontrib>Kong, Xiaohui</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><jtitle>European journal of wood and wood products</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Jiamin</au><au>Wang, Chaojie</au><au>Yang, Xiaojun</au><au>Bai, Xinchun</au><au>Tan, Yongjie</au><au>Kong, Xiaohui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interlaminar shear properties of glulam made of heat-treated laminates</atitle><jtitle>European journal of wood and wood products</jtitle><stitle>Eur. J. Wood Prod</stitle><date>2023-08-01</date><risdate>2023</risdate><volume>81</volume><issue>4</issue><spage>887</spage><epage>896</epage><pages>887-896</pages><issn>0018-3768</issn><eissn>1436-736X</eissn><abstract>Heat-treated wood is environmentally friendly relative to other modified woods, and if processed into glulam, it is expected to optimize not only its durability and stability in color and dimension but also the large size application of glulam. Interlayer interface is the key link where the bonding quality of glulam is chiefly determined. In this study, Mongolian Scots pine (
Pinus sylvestris var. Mongolica
) laminates with varying degrees of heat treatment were respectively bonded by one-component polyurethane adhesive (PU) and aqueous polymer isocyanate adhesive (API). In order to explore the effect of heat treatment on glulam interface, the shear test method was taken to systematically examine the interlaminar bonding properties. The result showed that high-temperature heat treatment reduced the hydrophilic groups in wood and decreased the surface wettability, and indicated a negative correlation between heat treatment temperature and surface wettability. Planing resulted in a flatter surface and reduced the adverse effect of brittle layer on the surface, thus improving the surface wettability. Deep heat treatment (215 °C) was not ideal for the interlaminar shear properties of glulam. Planing the laminate surface before gluing significantly improved the interlaminar shear properties. A planing thickness of 0.6 mm was able to obtain a better bonding property. PU was more suitable for gluing heat-treated laminates compared with API. Under a high humidity environment, the interlaminar shear property of heat-treated glulam was relatively stable. The interlaminar shear strength of glulam with a higher heat treatment temperature was less influenced by environmental humidity. Moderate heat treatment (180 °C) increased the crystallinity and expanded the crystallization region of wood, which was conducive to improve the shear properties of glulam short beams. Deep heat treatment made the wood fibers hard and brittle, and the shear strength of short beams decreased slightly.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00107-023-01934-7</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-0931-9857</orcidid></addata></record> |
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| subjects | Application programming interface Biomedical and Life Sciences Brittleness Ceramics Composites Crystallization Fibers Glass Gluing Glulam Heat treating Heat treatment Heat treatments High temperature Humidity Interfacial shear strength Interlayers Isocyanates Laminates Life Sciences Machines Manufacturing Natural Materials Original Article Pine trees Pinus sylvestris Planing Polymers Polyurethane Polyurethane resins Processes Shear properties Shear strength Shear tests Wettability Wood Wood fibers Wood Science & Technology |
| title | Interlaminar shear properties of glulam made of heat-treated laminates |
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