Study of low toxicity wood preservatives that contribute to forest conservation and prevention of residential environment

有助于森林保护和居住环境预防的低毒木材防腐剂的研究

基本信息

批准号：
09460079
负责人：
YAMAGUCHI Haruhiko
金额：
$ 4.1万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09460079/
关键词：
Silicon compound Boron compound Compounded gel Hard-leaching fixation Wood preservatives Wood flame retarder Insecticide and termiticide Preservation mechanism 固定(溶脱)性試験毒性試験木材用防腐剤難燃化剤

项目摘要

Retention ability of agent : WPG, which treated with low molecular - weight silicic acid - inorganic compound agent, was 17 - 22% in case of silicic acid - metal chloride compound agent and was about 15% in case of boric acid compound agent. The treated woods were offered in decay test using Fomitopsis palustris and Trametes versicolor. Ash of specimen after decay test was 16 - 17% in case of metal chloride compound agent and was 13.5 -14% in case of boric acid compound agent against about 0.3% (w/w) of untreated wood. In other words, it became clear that the leaching quantity of the metal chloride compound agent was larger than that of boric acid compound agent in moisture atmosphere in decay examination. In case of metal chloride compound agent, the reduction rate of metal was larger than that of silicon. There was not the differential in reduction rate of silicon and boron of boric acid compound agent before and after the decay test. In other words, boric acid, which can enter cryst … More al lattice of high molecular weight silicic acid, is the best as a chemical compounding with low molecular weight silicic acid.Preservation mechanism : F. palustris was standing cultured using the liquid medium, which mixed the wood powder treated with agent difference in combination rate of boric acid. Growth of mycelium with much quantity of boric acid was inhibited, and there was a little quantity of formed protein too. The activities of various enzyme in crude enzyme, which was prepared from the liquid medium were lower than that of control wood powder. The drop of pH of culture medium with much quantity of boric acid was restrained. In other words, growth and generation mechanism of oxalic acid of F. palustris were inhibited by addition of the compound that impregnated into the chain layer. However, the activity of enzymes as the mannase, which was initial enzyme of decay by F. palustris was not inhibited greatly.Test of termite resistance ability : Termite resistance ability with many quantities of added boric acid is large, and the termite died by contact poison. When treated powder is bait, every termite dies in 1 -4 days, and the mass loss of specimen was restrained in 3 - 6% for 49% of control (this value includes weight too of the agent, which was leached in the test.)Test of flameproofing : The compound wood, which the kind of low molecular weight silicic acid and the quantity of the boric acid were changed and prepared, was offered in the flammability test using a cone-calorimeter. When there is much rate of added acid, the time of firing and the appearance time to flash point are late, the quantity of emitting smoke and the rate of emitting fever rate decrease, and the degree of flameproofing improved. Less

药剂的保留能力：WPG用低分子量 - 重量硅酸 - 无机复合剂处理的WPG为17-22％的硅酸 - 金属氯化物化合物，在硼酸化合剂的情况下约为15％。使用Fomitopsis palustris和Trametes versicolor在衰减测试中提供了处理过的木材。衰减测试后的样品灰为16-17％，如果是金属氯化物化合物，则在未经处理的木材的0.3％（w/w）的情况下为硼酸化合剂，为13.5 -14％。换句话说，很明显，在衰减检查中，在水分气氛中，金属氯化物化合物的领先量大于硼酸化合物的领先量。如果是金属氯化物化合物，金属的还原速率比硅的还原速率大。在衰减试验之前和之后，硅酸化合物的硅和硼的还原速率没有差异。换句话说，可以进入晶体的硼酸……更多的高分子量硅酸晶格是最好的化合物，它是一种具有低分子量硅酸的化合物。预测机制：F。palustris使用液体培养基培养，使用液体培养基培养，该培养基与木粉与伯罗克酸的组合速率混合了木粉的药物差异。菌丝的生长与大量硼酸的生长受到抑制，并且也有少量形成的蛋白质。从液体培养基制备的粗酶中各种酶的活性低于对照木粉的活性。恢复了大量硼酸的培养基的pH下降。换句话说，通过添加浸渍到链层中的化合物来抑制帕科特菌的草酸的生长和产生机制。然而，酶作为甘露酶的活性，是F. palustris的初始腐烂酶的抑制作用。当处理的粉末是诱饵时，每个术语在1-4天内死亡，并且样品的质量损失在3-6％的3％中恢复了49％的对照（该值也包括代理的重量，这是在测试中进行的。锥钙计。当添加酸的速度很大时，发射时间和闪光点的出现时间迟到，发出烟雾的数量以及发烧率降低的速度降低，防火程度得到了改善。