High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards
Abstract Effects of high-pressure (HP) treatment on densification of poplar sapwood boards and subsequent coatings were evaluated. Tung oil (TO) and epoxy resin (ER)-coated treatments were used to improve the dimensional stability of HP-densified wood. The density of the wood after HP densification...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-06-01
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| Series: | Journal of Wood Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s10086-020-01892-1 |
| _version_ | 1818456463231680512 |
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| author | Yong Yu Aqiang Li Kaiya Yan Hosahalli S. Ramaswamy Songming Zhu Huanhuan Li |
| author_facet | Yong Yu Aqiang Li Kaiya Yan Hosahalli S. Ramaswamy Songming Zhu Huanhuan Li |
| author_sort | Yong Yu |
| collection | DOAJ |
| description | Abstract Effects of high-pressure (HP) treatment on densification of poplar sapwood boards and subsequent coatings were evaluated. Tung oil (TO) and epoxy resin (ER)-coated treatments were used to improve the dimensional stability of HP-densified wood. The density of the wood after HP densification increased from 450 ± 50 kg/m3 for the control to 960 ± 20 kg/m3 at 125 MPa. This process also resulted in the average thickness of HP-densified boards to reduce significantly from 29.7 ± 0.11 mm for the control to 18.8 ± 0.53 mm after HP densification at 25 MPa and 14.3 ± 0.10 mm after 125 MPa treatment for 30 s. The mechanical strength measured as the hardness of densified wood significantly increased from 35% at 25 MPa to 96% at 125 MPa treatment, compared to untreated wood. As expected both TO and ER-coated treatments significantly reduced set-recovery of densified wood when stored at four relative humidity environments. ER showed better anti-swelling performance than TO, and would be a better choice. |
| first_indexed | 2024-12-14T22:27:04Z |
| format | Article |
| id | doaj.art-8b840a41a5534e55b22fe7ab41128b8f |
| institution | Directory Open Access Journal |
| issn | 1435-0211 1611-4663 |
| language | English |
| last_indexed | 2024-12-14T22:27:04Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Wood Science |
| spelling | doaj.art-8b840a41a5534e55b22fe7ab41128b8f2022-12-21T22:45:19ZengSpringerOpenJournal of Wood Science1435-02111611-46632020-06-0166111110.1186/s10086-020-01892-1High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boardsYong Yu0Aqiang Li1Kaiya Yan2Hosahalli S. Ramaswamy3Songming Zhu4Huanhuan Li5College of Biosystems Engineering and Food Science, Zhejiang UniversityCollege of Biosystems Engineering and Food Science, Zhejiang UniversityCollege of Biosystems Engineering and Food Science, Zhejiang UniversityDepartment of Food Science and Agricultural Chemistry, McGill UniversityCollege of Biosystems Engineering and Food Science, Zhejiang UniversityInstitute of Food Science, Zhejiang Academy of Agriculture SciencesAbstract Effects of high-pressure (HP) treatment on densification of poplar sapwood boards and subsequent coatings were evaluated. Tung oil (TO) and epoxy resin (ER)-coated treatments were used to improve the dimensional stability of HP-densified wood. The density of the wood after HP densification increased from 450 ± 50 kg/m3 for the control to 960 ± 20 kg/m3 at 125 MPa. This process also resulted in the average thickness of HP-densified boards to reduce significantly from 29.7 ± 0.11 mm for the control to 18.8 ± 0.53 mm after HP densification at 25 MPa and 14.3 ± 0.10 mm after 125 MPa treatment for 30 s. The mechanical strength measured as the hardness of densified wood significantly increased from 35% at 25 MPa to 96% at 125 MPa treatment, compared to untreated wood. As expected both TO and ER-coated treatments significantly reduced set-recovery of densified wood when stored at four relative humidity environments. ER showed better anti-swelling performance than TO, and would be a better choice.https://doi.org/10.1186/s10086-020-01892-1High-pressure densificationLow-density wood densificationHardness improvementTung oil and epoxy resin-coated treatments |
| spellingShingle | Yong Yu Aqiang Li Kaiya Yan Hosahalli S. Ramaswamy Songming Zhu Huanhuan Li High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards Journal of Wood Science High-pressure densification Low-density wood densification Hardness improvement Tung oil and epoxy resin-coated treatments |
| title | High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| title_full | High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| title_fullStr | High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| title_full_unstemmed | High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| title_short | High-pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| title_sort | high pressure densification and hydrophobic coating for enhancing the mechanical properties and dimensional stability of soft poplar wood boards |
| topic | High-pressure densification Low-density wood densification Hardness improvement Tung oil and epoxy resin-coated treatments |
| url | https://doi.org/10.1186/s10086-020-01892-1 |
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