Epoxy resin bearing diacylhydrazine moiety as a degradable adhesive for traceless oxidative removal
作者:Takahiro Oguri、Akie Kawahara、Nobuhiro Kihara
DOI:10.1016/j.polymer.2016.06.066
日期:2016.9
hydrazination, followed by oxidative coupling of the obtained hydrazide. Ester groups with long alkyl chains or polyether increased the solubility of bisphenols in the epoxy resin. The epoxy resin was cured by heating with bisphenols in the presence of a catalytic amount of imidazole, with more rapid curing observed for more soluble bisphenols. The cured resin, with Td5 ≈ 300 °C, decomposed rapidly when exposed
由5-羟基间苯二甲酸通过酯化和部分酰化,然后氧化偶联得到的酰肼,制备由二酰基肼部分和酯基官能化的双酚。具有长烷基链或聚醚的酯基增加了双酚在环氧树脂中的溶解度。通过在催化量的咪唑存在下与双酚一起加热来固化环氧树脂,对于更可溶的双酚,观察到更快的固化。固化树脂,T d5 ≈300°C,暴露于次氯酸钠溶液中迅速分解。上述树脂可以用作金属和玻璃的强韧粘合剂,而用次氯酸钠溶液处理则可以很容易地将其除去,而没有任何痕迹。观察到的拆解速率与双酚溶解度呈正相关。