缓释型甲醛捕捉剂的制备及其在刨花板甲醛释放控制中的应用  

Preparation of Sustained-release Formaldehyde Scavenger Agent and Its Application in Particleboard Application of Formaldehyde Release Control

作　　者：段杰 石金培 梁瑾瑾 何乃腾 邱潇锐 刘玉[1] DUAN Jie;SHI Jin-pei;LIANG Jin-jin;HE Nai-teng;QIU Xiao-rui;LIU Yu(College of Materials Science and Engineering,Northeast Forestry University,Harbin 150040,Heilongjiang,P.R.China)

机构地区：[1]东北林业大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《林产工业》2022年第10期6-9,33,共5页China Forest Products Industry

基　　金：东北林业大学大学生国家级创新训练计划项目资助(202010225126);中央高校基本科研业务费专项资金资助(2572020BB01)。

摘　　要：为降低刨花板游离甲醛释放量,研究以尿素为功能性芯材,壳聚糖为壁材,采用乳化交联法制备具有缓释功能的微囊型甲醛捕捉剂,并将其应用于刨花板制备过程中。结果表明:在芯壁材比例为2∶1,水油比为1.5∶1,乳化剂用量2%的条件下制备的微囊型甲醛捕捉剂形状规则,平均粒径在50μm左右,芯材负载量和负载效率达到45.86%和68.76%。相较于未处理材,添加微囊型甲醛捕捉剂的刨花板在第1天、第14天、第28天的甲醛释放浓度分别降低了38.27%、49.74%和25.74%。以微囊型甲醛捕捉剂填充刨花板内部孔隙结构,在芯材缓释降解游离甲醛的同时,影响游离甲醛的扩散迁移路径,从而达到较好的甲醛控释效果。In order to reduce the free formaldehyde emission of particleboard,urea was used as the functional core material and chitosan as the wall material,and the micro-capsule formaldehyde scavenger agent with slow-release function was prepared by emulsification crosslinking method in this study.And they were applied in the process of particleboard manufacture.The results showed that the microencapsulated formaldehyde scavenger agent with regular shape was prepared under the conditions of 2∶1 core wall material ratio,1.5∶1 water-oil ratio and 2%emulsifier dosage.The average particle size was about 50μm,and the loading capacity and loading efficiency of the core material reached 45.86%and 68.76%,respectively.Compared with untreated wood,formaldehyde release concentration of particleboard with microencapsulated formaldehyde scavenger agent decreased by 38.27%,49.74%and 25.74%on day 1,14 and 28,respectively.By filling the pore structure of particleboard with microencapsulated formaldehyde scavenger agent,the core material degrades free formaldehyde slowly and influences the diffusion and migration path of formaldehyde,so as to achieve better controlled release effect of formaldehyde.

关 键 词：刨花板 游离甲醛 甲醛捕捉剂 微胶囊 缓释性能 

分 类 号：TS653[轻工技术与工程]