论文部分内容阅读
CCB是一种性能优良的木材防腐剂,但它的抗流失性能不如CCA,由于它是水溶性防腐剂,故处理后木材的尺寸亦不稳定。本研究采用在防腐剂中添加聚合物或树脂的方法来提高CCB的抗流失性能,使CCB处理材的尺寸稳定性大大提高。研究结果表明,在CCB中添加少量聚乙烯醇缩醛树脂后,铜、铬、硼的流失与不加树脂相比分别减少57.63,78.53和96,46%;木材湿胀性在弦向减少91.97%、径向减少88.34%、体积减少84,20%;处理材的抗腐力也明显提高。
CCB is a good wood preservative, but its anti-loss properties are inferior to those of CCA. Because of its water-soluble preservative, CCB’s treated wood is also unstable in size. In this study, the addition of polymer or resin in the preservative to improve the anti-loss properties of CCB, so that the dimensional stability of CCB treated material greatly improved. The results showed that after adding a small amount of polyvinyl acetal resin to CCB, the loss of copper, chromium and boron decreased 57.63, 78.53 and 96.46% The chord direction decreases by 91.97%, the radial direction decreases by 88.34% and the volume decreases by 84,20%. The corrosion resistance of the treated wood also increases obviously.