Abstract: A series of aqueous polyurethane containing fluoromonomer(wpu-f)were synthesized from PBA), isophorone diisocyanate( IPDI), dimethylolpropionic acid( DMPA), dodecafluoroheptyl methacry late(MBFA-12), etc. The influence of the content of MBFA-12 on the properties of WPU-F were discussed. The results showed that the tens\ rength, adhesion and thermodynamic properties of WPU-F in 3,wacreased when the amount of MBFA-12 increased. Additionally, due to the intensive side-chain CF tercontact angle increased from 70. 7(0)to 107.6(0) and the water absorption of WPU-F film decreased from 61. 3% to less than 15%o and when the amount of MBFA-12 increased. which improved the water resistance of modified WPU-F significantly.

Key words: waterbome polyurethane, dodecafluoroheptyl methacrylate, modification, water resistance

摘要： 采用聚己二酸丁二醇酯（ＰＢＡ）、异氟尔酮二异氰酸酯（ＩＰＤＩ）、二羟甲基丙酸（ＤＭＰＡ）、甲基丙烯酸十二氟庚酯（ＭＢＦＡ－１２）等原料合成了含氟水性聚氨酯乳液（ＷＰＵ－Ｆ），考察了 ＭＢＦＡ－１２的用量对 ＷＰＵ－Ｆ乳液的粒径与黏度，ＷＰＵ－Ｆ胶膜的吸水率、接触角、附着力、硬度、拉伸强度、热力学性能等的影响。结果表明：用 ＭＢＦＡ－１２改性水性聚氨酯，在提高水性聚氨酯胶膜的拉伸强度、附着力、热力学性能的同时，由于侧链上密集的—ＣＦ３作用，接触角从７０.７（°）增加到 １０７.６（°），胶膜吸水率从 ６１.３％降到 １５％以下，大大提高了聚氨酯的耐水性。

关键词: 水性聚氨酯, 甲基丙烯酸十二氟庚酯, 改性, 耐水性能