纳米SiO_(2)/乳化蜡改性CuAz处理材的尺寸稳定性分析  

Dimensional Stability Analysis of CuAz Treated Wood Modified with Nano SiO_(2)/Emulsified Wax

作　　者：赵泽瑜 于丽丽[1] 何承鹏 ZHAO Zeyu;YU Lili;HE Chengpeng(College of Light Industry Science and Engineering,Tianjin University of Science and Technology,Tianjin 300457,China;Guizhou Renhuai Shenren Packaging Printing Co.,Ltd.,Renhuai 564500,China)

机构地区：[1]天津科技大学轻工科学与工程学院,天津300457 [2]贵州省仁怀市申仁包装印务有限责任公司,仁怀564500

出　　处：《天津造纸》2024年第2期38-43,共6页Tianjin Paper Making

基　　金：天津科技大学教育教学改革研究项目(KY202313)。

摘　　要：为保证防腐处理材在户外长期使用过程中具有较好的尺寸稳定性,采用具有疏水性能的纳米SiO_(2)/乳化蜡溶液对铜唑(CuAz)防腐剂浸注处理的南方松试材进行二次浸注处理,以期探索出改善CuAz处理材尺寸稳定性的最佳工艺条件。结果表明:纳米SiO_(2)及乳化蜡的引入会使CuAz处理材的吸水率和湿胀率降低,其吸水率随着所添加的纳米SiO_(2)的比表面积减小而降低;随着浸泡时间的延长,纳米SiO_(2)的比表面积越小越有利于长久的保持处理材的尺寸稳定性。与未改性木材相比,经不同改性处理的CuAz处理材,其干缩率均会有不同程度的增加,尤其是乳化蜡的添加会使纳米SiO_(2)/CuAz处理材的干缩率有一定程度的增加;并且,随着纳米SiO_(2)比表面积的增加,CuAz处理材的干缩率呈现先增加后减少的趋势。In order to achieve the better dimensional stability of preservative treated wood for outdoor application,the southern pine specimens impregnated with copper azole(CuAz)preservative were treated with nano SiO_(2)/emulsified wax solution to improve its water repellent ability.The aim is to find out the best preparation conditions to improve the dimensional stability of CuAz treated wood.The results showed that the introduction of emulsified wax andnano SiO_(2) would reduce the water absorption and moisture expansion of CuAz treated wood,which would be decreased with the decrease of the specific surface area of nano SiO_(2).As the water immersion prolonged,CuAz treated wood modified with the smaller specific surface area of nano SiO_(2),may maintain the better dimensional stability over a long period of time.Compared with untreated wood,CuAz treated wood with different modification treatments would have varying degrees of increase in drying shrinkage,especially the addition of emulsified wax would increase the drying shrinkage of nano SiO_(2)/CuAz treated wood to a certain extent.As the specific surface area of nano SiO_(2) increases,the drying shrinkage of CuAz treated wood showed a trend of first increasing and then decreasing.

关 键 词：CuAz处理材 纳米SiO_(2) 乳化蜡 尺寸稳定性 

分 类 号：TS652[轻工技术与工程]