共查询到17条相似文献,搜索用时 312 毫秒
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国外木材防腐技术和研究现状 总被引:15,自引:0,他引:15
从木材防腐剂、防腐处理工艺、改性处理及环境特性等几个方面对国外的木材防腐技术及研究现状进行较为系统、全面的介绍,并在此基础上指出木材防腐研究的几个主要方向.木材防腐剂的发展趋势是近期以水载防腐剂为主导,以开发综合性能优良的不含金属的有机防腐剂作为未来的发展方向;木材防腐处理工艺的重点在于增强防腐剂在木材中的渗透性,加速防腐剂与木材之间的固着反应以及开发新型的防腐处理工艺以适应新的防腐剂的需要.改性处理方面主要介绍木材的热处理和化学改性处理在防腐方面的应用现状.木材防腐处理的环境特性则着重介绍LCA技术(生命循环分析技术)以及防腐处理材的废弃处理问题.另外,还简要介绍木材防腐研究机构和协会、木材防腐标准等方面的情况.本文旨在使国内的木材研究者对当前木材防腐技术和研究有一个总体的认识,并在此基础上结合国内的实际情况,发展适于处理中国国内树种及适合市场需求的木材防腐技术,为更科学、更高效地利用国内木材资源提供新途径. 相似文献
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随着人类环境意识的提高,某些对环境和人体健康有较大影响的木材防腐剂(如铬化砷酸铜CCA)的使用受到限制或禁止。除了开发新的环保型木材防腐剂外,木材改性处理作为木材保护的另一手段,它在提高木材耐腐性方面的研究日益受到关注。本文主要介绍了木材改性处理的方法及防腐机理,并综述了国内外关于木材化学改性处理(以及热处理)后木材的耐腐性(以及抗虫蚁性)方面的研究现状,指出了我国在利用改性方法提高木材耐腐性方面研究所存在的问题,展望了今后研究和发展的方向。 相似文献
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国内外木材防腐新技术的开发与应用 总被引:2,自引:0,他引:2
对国内外木材防腐技术的研究动态、轻有机溶剂型木材防腐剂(LOSP)处理工艺、新防腐剂以及处理工艺的开发与应用进行了概述,并对国内的木材防腐工业发展提出建议. 相似文献
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美国:美国环境保护局批准EcoVance(TM)高效非金属防腐剂用于木材保护。Viance LLC公司将首次将EcoVance防腐剂用于生产其新的Ecolife(TM)耐气候高稳定性木材。此产品比用其他防腐剂处理的木材有更优异的性能和环境效益,是本行业的一个突破。EcoVance具有独特的抑制表面霉菌的性能,可使木材长久保持其原有外观,而且与其他防腐剂相比,维护保养可显著减少, 相似文献
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铜-季铵盐复配木材防腐剂的防腐性能 总被引:7,自引:1,他引:7
在实验室内采用常规的真空-加压法浸注试件,土壤木块法进行防腐试验,检验了铜-季铵盐类防腐剂(FFJ-1、FFJ-2和FFJ-3)对白腐采绒革盖菌[Coriolus versicolor(L.ex Fr.)Quel.]和褐腐绵腐卧孔菌[Poria placenta(Fr.)Cooke.]的防腐性能,结果表明:在较低的保持量下,都有较好的防腐效果。与百菌清(可湿性粉剂)、五氯酚钠、三唑酮相比较,它们对白腐菌的防腐性能与百菌清相近,批五氯酚钠和三唑酮好。 相似文献
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大力发展木材防腐,节约木材 总被引:10,自引:2,他引:10
本文分析了我国木材防腐的现状,并着重从建筑木材防腐,人工林木腐,木材,竹材的蓝变菌和霉菌防治,以及新型防腐剂的研究与发展等四个方面探讨了在新世纪初我国木材防腐的发展方向。 相似文献
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建筑材(木窗)防腐处理应用性试验表明:防腐剂PPA,CCB和CCA_(S)可用于门窗材的防腐处理。PPA宜采用双真空法;CCA_(S)、CCB宜采用加压法。其吸药量宜控制在窗框6kg/m~3,扇窗4kg/m~3。处理前应先机械加工,按窗框和窗扇分类进行防腐处理。对于难处理树种木材应考虑密封堆集扩散作业,使用水溶性防腐剂(CCA_(S)、CCB)时需采取木材防变形措施。 相似文献
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综述了无机硼类、有机铵类、植物油类以及纳米防腐剂等各类新型木材防腐剂的开发利用现状及研究进展,并针对不同防腐剂的特点,分析了不同类型的木材防腐剂在未来的发展潜力. 相似文献
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J. S. Rasmussen C. Felby S. Prasad H. Schmidt G. A. Eiceman 《Wood Science and Technology》2011,45(2):205-214
The durability of wood is improved by wood preservatives. Due to new environmental legislation, commonly used active ingredients
such as chromium and arsenate are being replaced by alternative and more environmentally friendly preservatives. However,
the alternative wood preservatives are more difficult to detect in the wood. Detection of the preservatives is necessary in
order to monitor millwork production for qualitative assessment of the wood preservative uptake. The aim of this study is
to examine the use of solid phase desorption-ion mobility spectrometry (SPD-IMS) can be used for rapid detection of the wood
preservatives propiconazole and tebuconazole in Scots pine (Pinus sylvestris). The findings proved that SPD-IMS is capable of detecting and distinguishing wood preservatives directly from treated wood
shavings. SPD-IMS requires no additional sample preparation or extraction of the wood sample. The findings show that SPD-IMS
is a fast and easily applied method for direct detection of propiconazole and tebuconazole in small wood samples. 相似文献
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Sheikh Ali Ahmed Tom Morén Margot Sehlstedt-Persson Åsa Blom 《Journal of Wood Science》2017,63(1):74-82
Conventional chemical wood preservatives have been banned or restricted in some applications due to human and animal toxicity and their adverse impact on the surrounding environment. New, low-environmental-impact wood treatments that still provide effective protection systems are needed to protect wood. Thermal modification of wood could reduce hygroscopicity, improve dimensional stability and enhance resistance to mold attack. The aim of this study was to investigate if these properties enhanced in thermally modified (TM) wood through treatments with oils. In this study, TM European aspen (Populus tremula) and downy birch (Betula pubescens) wood were impregnated with three different types of oil: water-miscible commercial Elit Träskydd (Beckers oil with propiconazole and 3-iodo-2-propynyl butylcarbamate, IPBC), a pine tar formulation and 100% tung oil. The properties of oil-impregnated wood investigated were water repellency, dimensional stability and mold susceptibility. The treated wood, especially with pine tar and tung oil, showed an increase in water repellency and dimensional stability. However, Beckers oil which contains biocides like propiconazole and IPBC showed better protection against mold compared with pine tar and tung oil. To enhance the dimensional stability of the wood, pine tar and tung oil can be used, but these oil treatments did not significantly improve mold resistance rather sometimes enhanced the mold growth, whereas a significant anti-mold effect was observed on Beckers oil treated samples. 相似文献