共查询到19条相似文献，搜索用时 109 毫秒
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三唑制剂的防腐及防白蚁性能 总被引：4，自引：0，他引：4
通过室内抑菌圈试验筛选用于制备防腐制剂的有效三唑类化合物,制备三唑制剂进行室内耐腐及野外耐久试验,以研究该制剂的防腐及防白蚁性能.结果表明:环丙唑醇(CY)、戊唑醇(TEB)和丙环唑(PPZ)对褐腐菌(GT)和白腐菌(TV)均具有很好的抑制效果.在室外地上(C3)使用条件下,对于CuPT(以PPZ、TEB和Cu为有效成分制备得到制剂,Cu∶ PPZ∶ TEB=50∶1∶1)各处理材,1.0 kg·m-3推荐为合理载药量;对于PT(以PPZ和TEB为有效成分制备得到制剂,PPZ∶TEB=1∶1)各处理材,200 g·m-3推荐为合理载药量.在室外与地接触(C4.1)使用条件下,对于CuCY(以Cu和CY为有效成分制备得到制剂,Cu∶CY =98.6∶1.4)各处理材,初步证明合理载药量在1.8～3.6 kg·m-3之间,但在白蚁危害十分严重地区,CuCY的载药量应大于3.6 kg·m-3. 相似文献
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以4年生新伐毛竹为试材,以白腐菌彩绒革盖菌为试菌,对壳聚糖铜配合物(CCC)、壳聚糖锌配合物(CZC)及相应的金属盐(氯化锌)和铜铬硼(CCB)处理材的抗流失性和耐腐性能进行试验.结果表明: 壳聚糖金属配合物在竹材中固着率略高于CCB,明显高于相应的金属盐,具有较强的抗流失性能;CCC处理的竹材对彩绒革盖菌的耐腐性能高于CCB处理材, 当CCC处理材中金属离子保持量达到6.35 kg·m-3时,腐朽后质量损失为0;CZC处理毛竹试材的耐腐效果和CCC效果相当,明显高于氯化锌处理材,当防腐剂中金属离子保持量高于2.41 kg·m-3时,CZC处理的竹材都达到最耐腐等级,且随着防腐剂中金属离子保持量的提高,处理材的质量损失率接近于0. 相似文献
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以两种水载铜基防腐剂季铵铜和铜唑对竹集成材进行防腐处理,分析了不同药剂和载药量对竹集成材耐腐性能的影响,以及不同干燥温度对处理材抗流失性能的影响,以筛选适宜的竹集成材防腐后处理工艺,显著提高处理材的耐久性.结果表明,经防腐处理后,竹集成材的耐腐性能大幅度提高,当季铵铜载药量≥2.6 kg/m3或铜唑载药量≥1.3 kg/m3时,竹集成材可以达到强耐腐等级;处理材的铜固着率随着载药量的增加而提高,不同干燥温度对铜的抗流失性能影响不显著.总体上看,防腐后处理工艺能够满足提高竹集成材耐久性能的要求,但其防腐剂的抗流失性能有待提高. 相似文献
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利用羽毛蛋白制备螯合蛋白铵铜硼盐防腐剂,对竹材进行防腐处理。防腐剂的FTIR分析表明,蛋白质与铜盐、硼盐形成了氨基酸金属盐、氨基酸盐,从而可以提高铜、硼在竹材内的固着性能。耐腐试验结果表明,防腐剂赋予防腐试件较好的耐腐性能,并且通过正交试验较佳防腐效果的防腐剂配制方案。 相似文献
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结构集成材的防腐处理 总被引：1，自引：0，他引：1
结构集成材作为建筑之梁、柱、檩条、门窗等承载部件的重要材料 ,除对其物理力学性能要求较高外 ,还必须具备耐腐、防火、耐候等性能。试验结果表明 ,利用常规防腐剂对集成材进行防腐处理 ,不仅可延长其使用年限 ,而且对其胶合性能没有不良影响。针对集成材的结构特点 ,采用集成材胶合前对层板进行药物处理的方法 ,可使药剂的作用到达集成材的深处 ,使集成材内进行药物处理成为可能 ,达到理想的防腐效果。常用的木材防腐剂类型主要有油性防腐剂、油溶性防腐剂、水溶性防腐剂 3种类型 ,如铜铬砷 (CCA)、氧溶砷酸铜 (ACA )、杂酚油、五氯酚… 相似文献
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Won-Joung Hwang S. Nami Kartal Yuji Imamura Kunio Tsunoda Katsumi Shinoda 《Journal of Wood Science》2007,53(4):332-338
This study describes a laboratory evaluation of the efficacy of two alkylammonium compounds [didecyldimethylammonium tetrafluoroborate
(DBF) and didecyldimethylammonium chloride (DDAC)] when applied via vacuum impregnation or superficial treatment. Treated
wood specimens were tested for their termite and microbial resistance under controlled laboratory conditions. The higher chemical
retentions were needed to suppress the feeding by Coptotermes formosanus ≦3% mass loss in the multichoice test than in the no-choice test. The DBF and DDAC retention levels necessary to meet the
performance requirement ≦3% mass loss after 12-week fungal exposure varied with wood species. The retention level of 3 kg/m3 for DBF and DDAC was generally high to keep the nondurable wood species free of decay. Although there was no difference between
DBF and DDAC in the efficacy against decay and termite attack, the former slightly outperformed the latter as an antimold
and antisapstain agent. 相似文献
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Natural durability of two plantation woods, Chinese fir and I-214 poplar, was investigated thoroughly by three testing methods,
namely an accelerated laboratory decay test, a fungus cellar test and a field test. After the decay test using Postia placenta and Trametes versicolor, Chinese fir and the I-214 poplar showed 34% and 69% of mass loss, respectively, indicating they should be classified as
slightly durable and non-durable wood. This conclusion was confirmed by the fungus cellar test and the field test. Like the
performance in the decay test, I-214 poplar showed no resistance to termites either in the laboratory or in the field, whereas
Chinese fir would be classified as moderately resistant.
[Supported by Sino-Japanese Technical Cooperation Project Titled “Studies on Chinese Plantation Wood” (JICA PROJECT/033-1418-E-O)] 相似文献
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Natural durability of two plantation woods, Chinese fir and I-214 poplar, was investigated thoroughly by three test- ing methods, namely an accelerated laboratory decay test, a fungus cellar test and a field test. After the decay test using Postia pla- centa and Trametes versicolor, Chinese fir and the I-214 poplar showed 34% and 69% of mass loss, respectively, indicating they should be classified as slightly durable and non-durable wood. This conclusion was confirmed by the fungus cellar test and the field test. Like the performance in the decay test, I-214 poplar showed no resistance to termites either in the laboratory or in the field, whereas Chinese fir would be classified as moderately resistant. 相似文献
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Natural durability of two plantation woods, Chinese fir and I-214 poplar, was investigated thoroughly by three testing methods, namely an accelerated laboratory decay test, a fungus cellar test and a field test. Aft er the decay test using Postia placenta and Trametes versicolor, Chinese fir and the I-214 poplar showed 34% and 69% of mass loss, respectively, indicating they should be classified as slightly durable and non-durable wood. This conclusion was confirmed by the fungus cellar test and the field test. Like the performance in the decay test, I-214 poplar showed no resistance to termites either in the laboratory or in the field,whereas Chinese fir would be classified as moderately resistant. 相似文献
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《中国林业科技(英文版)》2009,(1)
According to AWPA E11-2006 standard,copper fixation rates of several copper-based formulations,such as ammoniacal copper,amine copper,and ammoniacal-ethanolamine copper,as well as alkaline copper quaternary(ACQ),were tested and compared in this paper.And the fixation rates of tebuconazole(TEB) and propiconazole(PPZ) in several formulations,such as copper azole,emulsified type and solvent type,were also compared.The determination of copper content in the leachate was analyzed by atomic absorption spectrom... 相似文献
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Kunio Tsunoda 《Journal of Wood Science》2001,47(2):149-153
The treatability of wood (sapwood ofCryptomeria japonica D. Don) and wood-based composites (particleboard, waferboard, medium-density fiberboard, plywood) with vapor-boron was good, and the treated materials proved to be resistant to decay fungi and subterranean termites in laboratory bioassays. No difference in effectiveness was noted between vapor-boron and liquid-boron treatment of wood. Toxic threshold values determined for solid wood were 0%–0.24%, 0.26%–0.51%, and 0.26%–0.51% BAE (boric acid equivalent), respectively, against the white-rot fungusTrametes versicolor (L.: Fr.) Pilat, the brown-rot fungusFomitopsis palustris (Berk. et Curt.), and the subterranean termiteCoptotermes formosanus Shiraki. A concentration of less than 1% BAE seemed sufficient to control biological attacks on composites, although the toxic limits could not be determined more accurately because of the tested range of boron retention. High boron retention was needed to meet the performance requirements for slow-burning materials when a fire-retardant agent was not incorporated into the glue line. 相似文献
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ＦＲ—１、ＦＲ—２及ＰＦ树脂对木材阻燃、防腐、尺寸稳定等效果的研究 总被引：2，自引：0，他引：2
功能性改良药剂ＦＲ－１、ＦＲ－２及ＰＦ树脂处理马尾松、毛白杨后对木材阻燃、防腐、尺寸稳定及ＭＯＥ／ＭＯＲ的研究结果表明，ＦＲ－１处理的马尾松吸药量为３４．５kg/m^3时，氧指数可达６１％。ＦＲ－１处理的马尾松、毛白杨达到阻燃标准时，其用药理根据板材的厚度进行了初步确定，剂量范围为３０－９０kg/m^3。ＦＲ－１及ＦＲ－２在达到阻燃用药量的同时，处理后的马尾松、毛白杨耐腐试验的重量损失率小于或按拉１０％。ＦＲ－１处理的马尾松、毛白杨、吸药量分别为７５．６及９３．５kg/m^3时，吸水至饱和时，木材抗湿胀率（antiswelling ef-ficacy,ASE)分别为３０％、４６％；ＰＦ树脂处理的马尾松、毛白杨 、吸药量分别为７９．０％、６３．８kg/m^3时，ＡＳＥ分别为４６．２％、４１．４％。各处理对抗弯弹性模具（ＭＯＥ）影响为，ＦＲ－１处理的马尾松，ＭＯＥ差异不明显，ＦＲ－１处理的毛白杨，ＭＯＥ增加幅度为６．１％，ＰＦ树脂处理的马尾松，毛白杨、ＭＯＥ增加幅度分别为１０．６％及１７．９％。ＦＲ－１处理的马尾松、毛白杨对抗弯强度（ＭＯＲ）影响不明显。 相似文献
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S. Nami Kartal Christian Brischke Andreas O. Rapp Yuji Imamura 《Wood Science and Technology》2006,40(1):63-71
Evaluation of wood preservatives in soil-contact tests is becoming an important issue since detoxification of wood-protecting
compounds by fungi and bacteria found in soil may decrease the resistance of treated wood. In this study, the decay resistance
of wood treated with didecyl dimethyl ammonium tetrafluoroborate (DBF), a recently developed quaternary ammonia compound,
was evaluated in both soil bed and laboratory decay resistance tests. Small specimens (5×10×100 mm3) of DBF-treated and untreated sugi sapwood were subjected to decay in laboratory soil bed tests (DIN ENV 807 (2001)) followed
by Basidiomycetes tests (DIN EN 113 (1996)). Exposure in field soil and compost soil substrates was used to observe the effects
of wood degrading and other soil-inhabiting micro-organisms on the decay resistance of the specimens. Soil bed tests showed
that DBF-treated wood specimens at 7.7 kg/m3 retention level (1% DBF solution concentration) showed better performance compared to 0.01 and 0.1% DBF treatments. The 7.7 kg/m3 retention level was also effective to protect the wood specimens against Coniophora puteana and Coriolus versicolor in Basidiomycetes tests. It is concluded that detoxification of wood preservatives in soil contact is an important factor
to determine protective properties of treated wood in ground contact applications. Further experiments with larger specimens
are needed to observe the performance of DBF-treated wood at higher retention levels in field above ground and ground contact
tests.
Dedicated to Prof. Dr. H.C. Mult. Walter Liese on the occasion of his 80th birthday. 相似文献