环氧亚麻油-棕榈蜡复合乳液的制备及处理材的疏水性  

Study on Preparation of Epoxidized Linseed Oil/CarnaubaWax Compound Emulsion and the Hydrophobicity of Treated PoplarWood

作　　者：王玉娇 陈金宇 彭尧 王望 曹金珍[1] WANG Yu-jiao;CHEN Jin-yu;PENG Yao;WANG Wang;CAO Jin-zhen(Key Laboratory ofWooden Material Science and Application,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学木质材料科学与应用教育部重点实验室,北京100083

出　　处：《木材科学与技术》2021年第1期30-35,共6页Chinese Journal of Wood Science and Technology

基　　金：国家自然科学基金青年基金项目“基于复合乳液相分离的木材内蒙脱土杂化植物油/蜡双层疏水屏障的形成机制与调控”(31600452)。

摘　　要：为改善木材表面的疏水性能,以环氧亚麻油与棕榈蜡制备的复合乳液用于青杨(Populus cathayana Rehd.)试样常压浸渍处理,考察环氧亚麻油与棕榈蜡的配比及亲水亲油平衡值(HLB值)对复合乳液稳定性和粒径的影响,并评价复合乳液处理材的疏水性。结果表明,当环氧亚麻油/棕榈蜡配比为3:7、复合乳液的HLB值为17.0时,复合乳液的平均粒径为223.5 nm,离心稳定性达1级;处理材横切面与弦切面30 s内的接触角达到119.2°和105.8°,流失率为6.1%,对提高木材表面疏水性能具有实际应用意义。In order to improve the hydrophobic property of wood surfaces,epoxidized linseed oil and carnauba wax were used to prepare a compound emulsion to impregnate Poplar(Populus cathayana Rehd.)samples at atmospheric pressure.The effects of ratio of oil to wax and surfactant hydrophile-lipophile balance(HLB)value on the stability and particle size of compound emulsion were investigated;the hydrophobicity of wood was evaluated simultaneously.The results showed that when the HLB value was 17.0 and epoxidized linseed oil to carnauba wax ratio was 3:7,average particle size was 223.5 nm and centrifugal stability reached level 1.The contact angles on both cross and tangential sections of treated wood after 30 s reached 119.2°and 105.8°respectively;the leaching rate was 6.1%,which displayed significant improvement of the surface hydrophobic property of wood.

关 键 词：木材表面疏水 环氧亚麻油 棕榈蜡 复合乳液 离心稳定性 抗水流失性 

分 类 号：S781.61[农业科学—木材科学与技术] S785[农业科学—林学]