Influence mechanism of roller-press impregnation on the dimensional stability of eucalyptus scrimber

Wu Jieyu; Zhang Yamei; Yu Wenji

doi:10.12171/j.1000-1522.20230206

Journal of Beijing Forestry University > 2024 > 46(1): 141-151. > DOI: 10.12171/j.1000-1522.20230206

Wu Jieyu, Zhang Yamei, Yu Wenji. Influence mechanism of roller-press impregnation on the dimensional stability of eucalyptus scrimber[J]. Journal of Beijing Forestry University, 2024, 46(1): 141-151. DOI: 10.12171/j.1000-1522.20230206

Citation:

PDF (16775 KB)

Influence mechanism of roller-press impregnation on the dimensional stability of eucalyptus scrimber

Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China

More Information

Received Date: August 20, 2023
Revised Date: December 03, 2023
Accepted Date: December 05, 2023
Available Online: December 07, 2023

Graphical Abstract

Abstract

Abstract

Objective
To solve the problem of poor dimensional stability caused by the uneven disintegration during the preparation process of scrimber, the scrimber was prepared by roller-press impregnation, and the influence mechanism of roller-press impregnation on the dimensional stability of eucalyptus scrimber was explored.
Method
In this study, eucalyptus scrimber was prepared by cage and roller-press impregnation techniques, and the surface morphology, microstructure, and glue distribution were observed by ultra-depth microscope, scanning electron microscope, microcomputer tomography scanner, and laser confocal microscope. The surface chemical composition, surface roughness, surface wettability, and water resistance of scrimber were studied by X-ray photoelectron spectroscopy, roughness tester, contact angle tester, soaking at 63 ℃ for 24 h, and 28 h cycle treatment (boiling for 4 h, dry at 63 ℃ for 20 h, boiling for 4 h).
Result
Compared with the wood scrimber prepared by cage impregnation (CWS), the surface cracks, roughness, and the surface wettability of wood scrimber prepared by roller-press impregnation (RWS) were reduced, and the water resistance of RWS was significantly increased. The results of roughness showed that compared with CWS, the surface roughness R_a and R_z of RWS decreased by 34.38% and 72.75%, respectively. The contact angle test results indicated that the surface wettability of RWS was weakened, and the surface contact angle of RWS increased by 283.95% compared with CWS at the 20th second. The test result of soaking at 63 ℃ for 24 h showed that the thickness swelling ratio (TSR) and width swelling ratio (WSR) of RWS were 5.47% and 1.11%, respectively, which were 52.16% and 50.09% lower than those of CWS. The TSR and WSR of RWS under 28 h cycle treatment were 6.24% and 1.17%, respectively, which were reduced by 51.45% and 58.51%, respectively. The process of roller press caused secondary damage to the recombination unit, which increased the flow path for PF resin solution. At the same time, the negative pressure generated by the roller pressing during the process from compressing the cells to restoring their original appearance increased the penetration depth of the glue, formed a network bonding structure, strengthened the bonding performance of the recombined wood, and inhibited the rebound of wood cells after water absorption.
Conclusion
The roller-press impregnation improves the uniformity of glue distribution in scrimber, reduces the surface roughness of eucalyptus scrimber and wettability, and significantly improves the water resistance and dimensional stability, which has important references and guidance for the process optimization and continuous production of scrimber.
- cage impregnation,
- roller-press impregnation,
- eucalyptus scrimber,
- surface performance,
- water resistance,
- dimensional stability

FullText(HTML)

References (19)

References

[1]	李腊梅, 谢桂军, 曹永建, 等. 蒸汽热处理对桉木物理力学性能的影响[J]. 林业与环境科学, 2022, 38(6): 74−80. doi: 10.3969/j.issn.1006-4427.2022.06.012 Li L M, Xie G J, Cao Y J, et al. Effect of steam heat treatment on physical and mechanical properties of eucalyptus[J]. Forestry and Environmental Science, 2022, 38(6): 74−80. doi: 10.3969/j.issn.1006-4427.2022.06.012
[2]	于文吉. 我国重组材料科学技术发展现状与趋势[J]. 木材科学与技术, 2023, 37(1): 1−7. doi: 10.12326/j.2096-9694.2023001 Yu W J. Current status and future trend of science and technology for reconstituted materials in China[J]. Chinese Journal of Wood Science and Technology, 2023, 37(1): 1−7. doi: 10.12326/j.2096-9694.2023001
[3]	余养伦, 于文吉, 邓侃. 我国木(竹)质重组材料技术和产业发展现状及建议[J]. 中国人造板, 2018, 25(6): 1−5. Yu Y L, Yu W J, Deng K. Status quo and suggestions for China’s scrimber production technology and its industry development[J]. China Wood-Based Panels, 2018, 25(6): 1−5.
[4]	余养伦, 于文吉. 桉树单板高值化利用最新研究进展[J]. 中国人造板, 2009, 16(5): 7−12. doi: 10.3969/j.issn.1673-5064.2009.05.002 Yu Y L, Yu W J. Research progress on high value-added eucalyptus veneer[J]. China Wood-Based Panels, 2009, 16(5): 7−12. doi: 10.3969/j.issn.1673-5064.2009.05.002
[5]	雷文成, 张亚慧, 葛立军, 等. 结构用桉木重组木的适宜性制备工艺[J]. 林业工程学报, 2022, 7(6): 46−52. Lei W C, Zhang Y H, Ge L J, et al. Study on suitability manufacture process of structure eucalyptus scrimer[J]. Journal of Forestry Engineering, 2022, 7(6): 46−52.
[6]	余养伦, 周月, 于文吉. 密度对桉树纤维化单板重组木性能的影响[J]. 木材工业, 2013, 27(6): 5−8. doi: 10.19455/j.mcgy.2013.06.001 Yu Y L, Zhou Y, Yu W J. Effect of density on properties of scrimber made of fibrosis of eucalyptus veneer[J]. China Wood Industry, 2013, 27(6): 5−8. doi: 10.19455/j.mcgy.2013.06.001
[7]	张亚梅, 于文吉, 牛义. 浸胶法对桉树纤维化单板重组木性能的影响[J]. 木材工业, 2015, 29(5): 17−19. doi: 10.19455/j.mcgy.2015.05.004 Zhang Y M, Yu W J, Niu Y. Effects of adhesive impregnating methods on properties of scrimber made from fibrous eucalyptus veneers[J]. China Wood Industry, 2015, 29(5): 17−19. doi: 10.19455/j.mcgy.2015.05.004
[8]	Gao Q, Lin Q Q, Huang Y X, et al. High-performance wood scrimber prepared by a roller-pressing impregnation method[J]. Construction and Building Materials, 2023, 368: 130404. doi: 10.1016/j.conbuildmat.2023.130404
[9]	Zhang Y, Huang X, Zhang Y, et al. Scrimber board (SB) manufacturing by a new method and characterization of SB’s mechanical properties and dimensional stability[J]. Holzforschung, 2018, 72(4): 283−289. doi: 10.1515/hf-2017-0071
[10]	张亚梅, 祝荣先, 余养伦, 等. 辊压树脂定向渗透工艺对竹束干燥及重组竹性能的影响[J]. 林业工程学报, 2022, 7(5): 44−49. Zhang Y M, Zhu R X, Yu Y L, et al. Effect of the resin directional penetration by rolling technology on the drying process of bamboo bundles and bamboo scrimber properties[J]. Journal of Forestry Engineering, 2022, 7(5): 44−49.
[11]	吴萧. 杨树应拉木生长应变与材性关系的研究[D]. 合肥: 安徽农业大学, 2022. Wu X. Research on the relationship between growth strain and wood properties of poplar tension wood[D]. Hefei: Anhui Agricultural University, 2022.
[12]	段新芳, 鲍甫成. 人工林毛白杨木材解剖构造与染色效果相关性的研究[J]. 林业科学, 2001, 37(1): 112−116. doi: 10.11707/j.1001-7488.20010117 Duan X F, Bao F C. Relationship between wood structures and its wood dyeing effects of Populus tomentosa from plantation[J]. Scientia Silvae Sinicae, 2001, 37(1): 112−116. doi: 10.11707/j.1001-7488.20010117
[13]	贺霞. 杨木高强度微波预处理特性与机理研究[D]. 长沙: 中南林业科技大学, 2020. He X. The research on characteristics and mechanism of poplar wood during high-intensity microwave pretreatment[D]. Changsha: Central South University of Forestry and Technology, 2020.
[14]	梁艳君. 制造工艺对纤维化单板重组木性能影响规律的研究[D]. 北京: 中国林业科学研究院, 2018. Liang Y J. Study on the influence of manufacturing process on properties of fibrosis veneer scrimber[D]. Beijing: Chinese Academy of Forestry, 2018.
[15]	王喆. 真空热处理落叶松材性变化规律及其机理研究[D]. 北京: 中国林业科学研究院, 2017. Wang Z. Study on properties and mechanism of larch wood modified by vacuum heat treatment[D]. Beijing: Chinese Academy of Forestry, 2017.
[16]	黄尔卓. NaOH溶液处理法制备木纤维工艺及无胶胶合机理研究[D]. 杭州: 浙江农林大学, 2021. Huang E Z. Study on the preparation of wood fiber by NaOH solution treatment and its binder-free bonding mechanism[D]. Hangzhou: Zhejiang A&F University, 2021.
[17]	高玉磊. 高温热处理杉木的吸湿吸水性变化规律及其机理研究[D]. 北京: 中国林业科学研究院, 2019. Gao Y L. Study on the changes and its mechanism of moisture adsorption and absorption properties of high temperature heat treated Chinese fir wood[D]. Beijing: Chinese Academy of Forestry, 2019.
[18]	韦亚南. 基于热处理单板的重组木性能及光老化机制研究[D]. 北京: 中国林业科学研究院, 2018. Wei Y N. Study on the UV photo aging mechanism and properties of scrimber based on heat-treated veneers[D]. Beijing: Chinese Academy of Forestry, 2018.
[19]	Garrote G, Domínguez H, Parajó J C. Study on the deacetylation of hemicelluloses during the hydrothermal processing of Eucalyptus wood[J]. HolzalsRohund Werkstoff, 2001, 59(1−2): 53−59. doi: 10.1007/s001070050473

Cited By

Cited by

Periodical cited type(2)

1.	周晓欢，曾凡玉，耿兴敏，许世达. 观赏植物多倍体育种研究进展. 中国野生植物资源. 2025(01): 88-93 .
2.	刘劲松，谷得明，徐俊，许之扬，李硕，胡久荣. 赤霉素强化不同微藻处理技术对养猪废水中抗生素的去除效果研究. 环境污染与防治. 2024(09): 1245-1250+1257 .

Other cited types(1)

Get Citation

PDF

XML

Article views (354) PDF downloads (45) Cited by(3)

Turn off MathJax

Article Contents

Abstract

References

Influence mechanism of roller-press impregnation on the dimensional stability of eucalyptus scrimber

Abstract

References

Cited by

Periodical cited type(2)

Other cited types(1)

Catalog

Export File

Citation

Format

Content