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

药剂保留能力：用低分子量硼酸-无机复合剂处理后，磷酸-金属氯化物复合剂的WPG为17 - 22%，硼酸复合剂的WPG为15%左右。用沼泽层孔菌和变色栓菌对处理后的木材进行腐朽试验。防腐后的木材灰分，金属氯化物复合防腐剂为16 ~ 17%，硼酸复合防腐剂为13.5 ~ 14%，而未防腐木材的灰分约为0.3%（w/w）。换句话说，很明显，在腐蚀检查中，在潮湿气氛中，金属氯化物复合剂的浸出量大于硼酸复合剂的浸出量。在金属氯化物复合剂的情况下，金属的还原速率大于硅的还原速率。硼酸复合剂的硅、硼还原率在衰变前后无差异。换句话说，可以进入晶体的硼酸 ...更多信息 高分子量柠檬酸的铝晶格，是与低分子量柠檬酸最佳的化学配合物。用硼酸结合率不同的处理剂处理过的木粉与液体培养基混合，对沼泽湿地植物进行静置培养。硼酸浓度高时菌丝生长受到抑制，蛋白质生成量少。用液体培养基制备的粗酶液中各种酶的活性均低于对照木粉。硼酸含量高的培养基pH值的下降受到抑制。也就是说，F.通过添加浸渍到链层中的化合物来抑制沼泽化。而作为降解起始酶的甘露聚糖酶活性较低。抗白蚁能力试验：硼酸添加量多，抗白蚁能力强，白蚁触杀死亡。用处理过的粉作诱饵，1 - 4天内白蚁全部死亡，试件的质量损失控制在3 - 6%，为对照的49%（该值还包括试验中浸出的药剂重量）。防火试验：通过改变低分子量硼酸的种类和硼酸的用量，制备了复合木材，并利用锥形量热仪进行了燃烧性能测试。当加酸量较大时，着火时间和闪点出现时间较晚，发烟量和发热率降低，阻燃程度提高。少

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