共查询到18条相似文献，搜索用时 250 毫秒
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主要综述了季铵盐类化合物(QAC)在用作木材防腐剂时的耐腐性、抗流失性及其与木材的结合机理等方面的研究概况,分析了实验室耐腐性和野外实验耐腐性结果不一致的原因。此外也介绍了对季铵盐进行改性处理方面的一些研究进展。 相似文献
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文章以马尾松、尾叶桉、马占相思和南洋楹4种木材为研究对象,采用KJQ、TRQ、WAQ 3种涂料与防腐剂复配处理木材,研究复配涂料对木材耐腐性能的影响。结果表明KJQ复配涂料处理对提高马尾松的耐腐性能较其它2种涂料好。经KJQ复配涂料处理后,马尾松、尾叶桉、马占相思和南洋楹木材的耐腐性能由原来的稍耐腐等级提高到强耐腐等级,其中KJQ涂料与DDAC、IPBC和SGB 3种防腐剂活性成分复配后的处理材耐腐性能较好。 相似文献
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在不同pH值的反应条件下,通过正硅酸四乙酯的水解缩合得到二氧化硅;运用溶胶凝胶法制备几种热处理木材提取物/二氧化硅微胶囊,并采用真空-加压浸渍改性杨木。通过流失试验和耐腐试验,研究微胶囊对改性杨木耐腐性的影响;通过酶活性试验探究了微胶囊的抑菌机理。结果表明：热处理木材提取物/二氧化硅微胶囊木材防腐剂可以提高木材的抗流失性和耐腐性;微胶囊抑菌成分主要通过影响白腐菌中木质素酶（锰过氧化物酶、漆酶）、纤维素酶（外切纤维素酶、β-葡萄糖苷酶）、半纤维素酶活性达到阻碍白腐菌生长的目的;微胶囊仅对褐腐菌中纤维素酶（内切纤维素酶）活性有抑制作用。 相似文献
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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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TWP防腐剂以满细胞法处理的橡胶木,经露天气干2至9个月,用试剂显色法测定药剂透入深度。对4～6cm厚的板材药剂全部渗透,外层15mm硼酸当量(BAE)占木材绝干重0.20%以上。经耐腐性试验测定,用TWP处理的橡胶木属耐腐级,但野外耐腐性较差。此外,还探讨了板材不同深度的耐腐效力 相似文献
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几种防腐剂处理尾叶桉,湿地松和马尾松木材的室内促进试验 总被引：1，自引：1，他引：0
对马尾松、湿地松和尾叶桉３种木材用Ａ、Ｂ、Ｃ３种防腐剂处理,通过室内促进试验测得各种防腐剂使用量的临界值,结果表明,３种木材的天然耐腐性均属不耐腐或易腐烂等级,经防腐剂处理后,木材的防腐效果较好,且Ａ防腐剂较Ｂ、Ｃ为好。试验结果可为实际处理生产工艺的制定及预测防腐剂的处理效果提供参考。 相似文献
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文章研究了SGB硼浓缩液木材防腐剂对腐朽菌、白蚁和哺乳动物等生物的毒性,结果表明:SGB防腐剂处理材具有较好的抗白蚁性和耐腐性,该防腐剂对大白鼠的急性经口毒性为低毒级,SGB是适合用于喷涂使用的环保型木材防腐剂。 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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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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Organic biocides as timber preservatives have aroused more and more attention,because metal salts especially arsenic,chrome and so on, have been suspected to be poisonous to the soil and aquatic animals,as well as the disposal of preserved timber wastes.Therefore,a number of effective organic biocides have been selected to prevent wood or bamboo from decay,mildew, stain and so on.Most of these products have entered into the market.With people’s increasing awareness of the environmental protection,organic biocides will eventually play important roles in timber preservation in the future.This paper summarized the studies on application of organic biocides as wood or bamboo preservatives,including resistant mechanisms,commonly applied types and effects against wood or bamboo fungi,approaches to detecting the amount of organic biocides in timber and their influences on the environment.Based on the discussion above,the authors predicted the developing prospect of organic biocides in timber preservation. 相似文献
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Sye Hee Ahn Sei Chang Oh In-Gyu Choi Ho-Yong Kim In Yang 《Journal of Wood Science》2008,54(6):495-501
As a substitute for high-cost copper azole (CuAz) and alkaline copper quaternary (ACQ) wood preservatives, alternative wood
preservatives were formulated with okara, which is an organic waste from the production of tofu, and copper chloride and/or
borax. Each preservative was used in treatment of wood blocks in a reduced-pressure method to measure its treatability. The
treated wood blocks were placed in hot water for 3 days to examine the stability of the preservatives against hot-water leaching.
The preservatives successfully penetrated into wood blocks, probably due to the use of ammonium hydroxide as a dissociating
agent. However, the stability of okara-based preservatives dropped as the concentration of acid in the solutions used for
hydrolysis of okara increased. The treatability and leachability of the preservatives were not affected by hydrolysis temperature
but were negatively affected by the addition of borax. Leached wood blocks treated with okara-based preservatives and exposed
to decay fungi Gloeophyllum trabeum and Postia placenta over 12 weeks showed good decay resistance. Okara-based wood preservatives can protect wood against fungal attack as effectively
as CuAz, and have potential for use as environmentally friendly wood preservatives. 相似文献