The Research on Temperature Variation Characteristic of Wood during High-intensity Microwave Pretreatment

Xia He; Guanmin Yang; Xueming Yan

doi:10.54097/zp02ac23

Authors

Xia He
Guanmin Yang
Xueming Yan

DOI:

https://doi.org/10.54097/zp02ac23

Keywords:

Microwave pretreatment; wood; temperature.

Abstract

High-intensity microwave pretreatment (HIMP) is a kind of wood modification technology with great potential. In this study, a microwave (MW) treatment of plantation poplar (populous deltoids) wood was investigated by applying MW treatments with varying conditions, such as radiation power, irradiation time, and initial moisture content of the wood. The effect of microwave pretreatment conditions on internal temperature of wood was studied systematically. Results show that the temperature of wood increased with the microwave radiation intensity and the irradiation time. Excessive moisture content would make the wood heated up slowly. The temperature of wood changed in three stages: rapid heating stage, constant temperature section and slow heating section.

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References

[1] Vinden P, Torgovnikov G. Microwave modification of Radiata pine railway sleepers for preservative treatment[J]. European Journal of Wood & Wood Products, 2011, Vol.69 (No. 2): 271-279.

[2] Torgovnikov G, Vinden P. Microwave wood modification technology and its applications[J]. Forest Products Journal, 2010, Vol.60 (No. 60): 173-182.

[3] Torgovnikov G, Vinden P. New equipment for microwave wood modification[J]. 10th international conference on microwave and high frequency heating, 2005, Vol.9 (No. 2): 293-297.

[4] Torgovnikov G, Vinden P. Microwave method for increasing the permeability of wood and its applications[M]. Germany: Springer Berlin Heidelberg, 2006.

[5] Torgovnikov G, Vinden P. New wood based materials TORGVIN and VINTORG[C]. Proceedings of the Fifth Pacific Rim Bio-based Composite Symposium, 2000: 756-764.

[6] Wang X, He Q, Zhao X. Study on drying and collapse properties of Eucalypts plantation [J]. Journal of Inner Mongolia Agricultural University, 2013, Vol.34 (No. 1): 123-127.

[7] Cao W. The Effect on Drying Properties of Two Kinds of Microwave-treated Woods [D]. Zhejiang A&F University, 2015.

[8] Liu Y, Lv C, Chen J, et al. Characteristics of Timber Moisture Content Changes of Eucalyptus urophylla×E. grandis during Microwave Drying [J]. Guangxi Forestry Science, 2017, Vol. 46 (No. 3): 262-265.

[9] Wang T, Shi W. The polarization theory of microwave drying timbers[J]. Journal of Northeast forestry university, 1988. Vol.16 (No. 3): 41-49.

[10] He S, Yu H, Wu Z, et al. Effect of Microwave Treatment on Liquid Impregnate Property of Pinus Sylvestris L．var Lumber [J]. Journal of Microwaves, 2016, Vol.32 (No. 6): 90-96.