乳化石蜡/硅烷木材防水剂的制备及性能  

Preparation and Properties of Emulsified Water Repellent Made from Paraffin Wax and Silane for Wood Modification

作　　者：董迎 王玉娇 王望 曹金珍[1] DONG Ying;WANG Yu-jiao;WANG Wang;CAO Jin-zhen(Key Laboratory of Wooden 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：《木材工业》2018年第4期18-21,共4页China Wood Industry

基　　金：国家林业局林业科技成果推广计划(林业专利2017-3)"低粒径石蜡基乳液防水剂技术推广应用";北京市大学生科研创新训练项目(S201710022041)"蜡基防水剂对防腐处理材耐候性的影响"

摘　　要：为确定石蜡/硅烷木材防水剂的制备工艺,采用正交试验法,考察硅烷直链烷基链长、石蜡/硅烷比例、表面活性剂HLB值和含量四个因素对防水剂稳定性和粒径的影响,并探究不同配比石蜡/硅烷防水剂处理样的防水效果。结果表明,表面活性剂用量6%、HLB值为13.5,配制石蜡/硅烷为2∶1的石蜡/十二烷基甲氧基硅烷乳液,乳液平均粒径195.7 nm,稳定性等级达到1级,用于木材试样疏水改性的384 h防水效率达27.3%。In order to develop formulations of paraffin wax/silane emulsion for wood modification, an orthogonal test was designed to determine the effect of alkoxysilane chain length and ratio of wax to silane. This test also studied hydrophile-lipophile balance（HLB） value and content of surfactant on stability and particle size of the paraffin wax/silane emulsion. Moreover, water repellent efficiency of wood samples treated with different paraffin wax/silane emulsions was also determined. The results indicated that the optimal emulsion formulation was found with 2∶1 ratio of wax to silane as well as 13.5 of the HLB value and 6% of the surfactant content. The emulsion reached stability grade 1 with 195.7 nm average particle size and 27.3% water repellent efficiency of the wood samples achieved after 384 h immersion.

关 键 词：木材 石蜡 硅烷 乳液 防水剂 改性 稳定性 

分 类 号：S781.7[农业科学—木材科学与技术] S785[农业科学—林学]