CAJ | 학술논문

以4，4′-二环己基甲烷二异氰酸酯（HMDI）、聚四氢呋喃二醇（PTMEG）或聚己二酸新戊二醇-1，4-丁二醇酯二醇（CMA654）为主要原料合成了水性聚氨酯（WPU）乳液，并制膜进行耐黄变性测试。探讨了聚氨酯分子链中脲基含量、抗氧剂的种类及添加量对WPU胶膜耐黄变性的影响。结果表明，提高脲基含量可以提高胶膜的耐黄变性；添加质量分数0?9％的2，6-二叔丁基对甲苯酚（ BHT）或0?3％的抗氧剂1010可有效提高胶膜的耐黄变性；受阻酚与亚磷酸酯复配型抗氧剂相对于传统抗氧剂1010对胶膜的耐黄变性提高更为明显，且添加量少于单独使用抗氧剂1010。
이4，4′-이배기기갑완이이청산지（HMDI）、취사경부남이순（PTMEG）혹취기이산신무이순-1，4-정이순지이순（CMA654）위주요원료합성료수성취안지（WPU）유액，병제막진행내황변성측시。탐토료취안지분자련중뇨기함량、항양제적충류급첨가량대WPU효막내황변성적영향。결과표명，제고뇨기함량가이제고효막적내황변성；첨가질량분수0?9％적2，6-이숙정기대갑분분（ BHT）혹0?3％적항양제1010가유효제고효막적내황변성；수조분여아린산지복배형항양제상대우전통항양제1010대효막적내황변성제고경위명현，차첨가량소우단독사용항양제1010。
The waterborne polyurethane (WPU) emulsions were synthesized with dicyclohexylmethane-4,4′-di-isocyanate(HMDI), polytetramethylene ether glycol(PTMEG) or polyneopentylene-tetramethylene adipate glycol (CMA654) as the main materials. The yellowing resistance of WPU film was tested. The effects of carbamido group content in the molecular chain, the type and amount of antioxidant on yellowing resistance of WPU were dis-cussed. The results showed that higher carbamido group content could get better yellowing resistance of WPU. Add-ed with 0. 9% BHT or 0. 3% antioxidant 1010, yellowing resistance of WPU was significantly improved, and com-plex antioxidants( mixtures of hindered phenol and phosphite ester) were more effective than antioxidant 1010 used alone, and the usage amount was less.