热处理对木材力学性能的影响综述
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摘要
热处理可有效提高木材尺寸稳定性,同时对木材力学性能也有明显的影响。文中按照力学指标分别综述热处理工艺对静曲强度/弹性模量、抗压强度、脆性/冲击韧性及其他力学性能的影响,进而总结热处理对木材力学性能影响机理的研究进展;提出可以从以下方面深化热处理技术的研发:一是热处理技术研发时宜根据应用领域科学选择合适的力学指标,二是进一步拓展热处理介质以控制力学性能损失,三是进一步探索热处理对木材不同力学指标的影响机理。
As an effective method to improve the dimensional stability of wood,heat treatment has a significant effect on wood mechanical properties. The effects of heat treatment process on MOR/MOE,compressive strength,brittleness/impact toughness and others were summarized based on the mechanical indexes,and then the research progress in the influencing mechanisms was reviewed. The paper came up with the suggestions that:( 1) appropriate mechanical indexes should be selected according to the application field when developing new heat treatment technology;( 2) new treatment media should be developed to control the loss of mechanical properties; and( 3) further exploration on the influencing mechanism of heat treatment on different wood mechanical indexes are needed.
As an effective method to improve the dimensional stability of wood,heat treatment has a significant effect on wood mechanical properties. The effects of heat treatment process on MOR/MOE,compressive strength,brittleness/impact toughness and others were summarized based on the mechanical indexes,and then the research progress in the influencing mechanisms was reviewed. The paper came up with the suggestions that:( 1) appropriate mechanical indexes should be selected according to the application field when developing new heat treatment technology;( 2) new treatment media should be developed to control the loss of mechanical properties; and( 3) further exploration on the influencing mechanism of heat treatment on different wood mechanical indexes are needed.
引文
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[20]张亚梅,余养伦,于文吉.热处理对毛竹竹材力学性能影响[J].材料热处理学报,2009,30(3):33-35,41.
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[26]ESTEVES B,NUNES L,DOMINGOS I,et al.Improvement of termite resistance,dimensional stability and mechanical properties of pine wood by paraffin impregnation[J].European Journal of Wood and Wood Products,2014,72(5):609-615.
[27]HUMAR M,KRZISNIK D,LESAR B,et al.Thermal modification of wax-impregnated wood to enhance its physical,mechanical,and biological properties[J].Holzforschung,2017,71(1):57-64.
[28]BEHR G,BOLLMUS S,GELLERICH A,et al.Improvement of mechanical properties of thermally modified hardwood through melamine treatment[J].Wood Material Science&Engineering,2017,13(5):262-270.
[29]NAVICKAS P,KARPAVICIUTE S,ALBREKTAS D.Effect of heat treatment on wettability and modulus of elasticity of pine and spruce wood[J].Materials Science-Medziagotyra,2015,21(3):400-404.
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[31]WANG W,CHEN C,CAO J,et al.Improved properties of thermally modified wood(TMW)by combined treatment with disodium octoborate tetrahydrate(DOT)and wax emulsion(WE)[J].Holzforschung,2018,72(3):243-250.
[32]CHEN C,WANG W,CAO J,et al.Properties of thermally modified southern pine wood pretreated with alkylalkoxysilanes[J].BioResources,2016,11(2):5285-5298.
[33]李龙哲,阳财喜,宋作梅,等.桉树木材的浸渍增强热处理技术[J].木材工业,2009,23(3):40-42.
[34]刘君良,阳财喜,王雪花.增强-热处理桉树木材物理力学性能分析[J].木材加工机械,2010,21(3):1-4.
[35]侯瑞光,李贤军,刘元,等.浸渍-热处理对杨木力学性能的影响[J].中南林业科技大学学报,2016,36(2):125-129.
[36]李涛,顾炼百.18℃高温热处理对水曲柳木材力学性能的影响[J].林业科学,2009,45(2):92-97.
[37]丁涛,顾炼百,吴昊.蒸汽压力对热处理材力学性能影响的机理研究[J].林产工业,2010,37(1):16-18,32.
[38]李延军,唐荣强,鲍滨福,等.高温热处理杉木力学性能与尺寸稳定性研究[J].北京林业大学学报,2010,32(4):232-236.
[39]邓邵平,杨文斌,陈瑞英,等.人工林杉木木材力学性质对高温热处理条件变化的响应[J].林业科学,2009,45(12):105-111.
[40]范敏,倪欧琪,俞珍权,等.热处理对东非黑黄檀物理力学性能的影响[J].南京林业大学学报(自然科学版),2014,38(2):31-35.
[41]ZHANG Y,FENG D,DOU Y.Optimization of Populus tomentosa thermo-treatment process based on paraffin thermal conductive medium[J].Journal of Northwest Forestry University,2017,32(1):248-252.
[42]郭飞,黄荣凤,吕建雄,等.热处理温度与时间对马尾松木材脆性的影响[J].木材工业,2016,30(3):9-12.
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