摘要
由丙烯酸通过环氧化、双乙烯酮酯化等步骤合成得到除醛功能分子,即:3-羟基丁烯酸-2-丙烯酸乙二酯(AEHB)。使三羟甲基丙烷三丙烯酸酯(TMPTA)在偶氮二异丁腈(AIBN)热引发下适度聚合,成为超支化预聚体,其残余的双键部分以除醛功能分子(AEHB)封端,部分留作后续光固化用得光敏树脂(TMPTA-AEHB)。采用对肟酯光引发剂,在3D打印机中的LED激光器的405nm波长激光激发下,分解出自由基,使光敏树脂发生交联而固化,得到3D打印制品。将3D打印制品置于在玻璃空气舱进行除醛实验,发现其除醛能力随除醛功能成分含量的增加而提高,最高可达到84%左右的甲醛清除率,其除醛机理源于烯醇结构对甲醛羰基的亲核进攻。
The functional molecule （AEHB） was prepared from acrylate acid via epoxidation and esterification. The hyperbranched oligomer was prepared from TMPTA via thermal initiation and terminated by AEHB. The photosensitive resin containing the photoinitiator was then used for 3D printing and a 3D object was obtained which had the efficiency up to 84% for removal of the formaldehyde.
出处
《信息记录材料》
2015年第4期3-6,31,共5页
Information Recording Materials
关键词
光敏树脂
3D打印
光引发剂
甲醛
photosensitive resin
3D printing
photoinitiator
formaldehyde
