纳米二氧化钛/三聚氰胺树脂混合体系的特性  

Characteristics of nano-sized TiO_2/melamine formaldehyde resin mixture

作　　者：顾凯[1] 周晓燕[1] 

机构地区：[1]南京林业大学木材工业学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2010年第2期65-68,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：南京林业大学"十五"人才工程项目

摘　　要：利用具有光催化效应的纳米级二氧化钛(TiO2),将其附着于贴面材料表面以降低木质复合材料的游离甲醛释放量。采用扫描电镜、红外光谱仪以及电子自旋共振仪研究了纳米TiO2/三聚氰胺树脂混合体系的相容性和光催化特性。结果表明:纳米TiO2表面有大量的羟基,与三聚氰胺树脂混合后,大部分颗粒保持纳米粒径。经紫外光照射后,从红外光谱(IR)可知纳米TiO2/三聚氰胺树脂混合体系没有产生新的官能团。从电子自旋共振谱(ESR)可知,附着有纳米TiO2的三聚氰胺浸渍耐磨纸放置2个月后经紫外光照射,表面能产生高活性的羟基自由基和超氧阴离子自由基。This paper provided a new method via manufacturing a new self-cleaning and covering material coated with nano-sized TiO2 photo-catalysis. However, it was unknown what would happen if the melamine formaldehyde （MF） resin matrix was mixed with strong oxidative nano-sized TiO2. It was found that anatase nano-sized TiO2 had a lot of hydroxyl groups on the surface, and no new functional groups of mixture of MF/TiO2 were detected by infrared spectroscopy （IR）. In terms of covering materials coated with TiO2, electron spin resonance （ESR） proved that it still had catalytic capability even two months later once it was exposed under UV lights.

关 键 词：纳米二氧化钛 甲醛 光催化 三聚氰胺树脂 

分 类 号：S781[农业科学—木材科学与技术] TS653[农业科学—林学]