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首页> 外文期刊>Journal of Applied Polymer Science >Surface modification with waterborne fluorinated anionic polyurethane dispersions
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Surface modification with waterborne fluorinated anionic polyurethane dispersions

机译：水性氟化阴离子聚氨酯分散体的表面改性

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Waterborne fluorinated anionic polyurethane dispersions (FAPUDs) were synthesized from tris(6-isocyanatohexyl) isocyanurate, N-ethyl-N-2-hydroxyethyl-perfluorooctanesulfonamide, poly(oxytetramethylene glycol) (PTMG), dimethylolpropionic acid (DMPA), hexamethylene diisocyanate, 1,4-butanediol, and two different neutralizing agents (triethylamine and sodium carbonate). Waterborne polyurethane dispersions (PUDs) were synthesized from isophorone diisocyanate, PTMG, DMPA, and ethylenediamine as chain extenders. The particle size of the FAPUDs, based on the fluorine content and degree of neutralization (DN), was measured with dynamic light scattering. So that the surface modification and morphology variations of the PUDs through the addition of the FAPUDs could be observed, the surface energy and thermal properties of the blending films [fluorine PUD mixtures (FPMs)] were measured with contact-angle analysis and differential scanning calorimetry. The particle size of the FAPUDs increased as the fluorine content in the FAPUDs increased and decreased as the DN increased. The surface energy of the FPM films made from the blending of the FAPUD T series (neutralization with triethylamine) gradually decreased above the critical fluorine concentration (0.02797 wt %). However, for the blending of the FAPUD 25Na series (neutralization with sodium carbonate), the surface energy increased above the critical fluorine concentration (0.02797 wt %) because of the increase in Na salts. The FAPUDs showed the native thermal behavior of the fluorine. However, the thermal properties of the blending films were like those of pure PUDs. This showed that the morphology of the PUDs was rarely unchanged when the FAPUDs were added. (C) 2002 Wiley Periodicals, Inc. [References: 17]
机译：由三（6-异氰基己基）异氰脲酸酯，N-乙基-N-2-羟乙基-全氟辛烷磺酰胺，聚（氧丁二醇）（PTMG），二羟甲基丙酸（DMPA），六亚甲基二异氰酸酯，1合成水性氟化阴离子聚氨酯分散体（FAPUD） ，4-丁二醇和两种不同的中和剂（三乙胺和碳酸钠）。由异佛尔酮二异氰酸酯，PTMG，DMPA和乙二胺作为扩链剂合成了水性聚氨酯分散体（PUD）。 FAPUDs的粒径基于氟含量和中和度（DN），通过动态光散射进行测量。因此，可以观察到通过添加FAPUD引起的PUD的表面改性和形态变化，并通过接触角分析和差示扫描量热法测量了共混膜[氟PUD混合物（FPM）]的表面能和热性能。 。 FAPUDs的粒径随FAPUDs中氟含量的增加而增加，随DN的增加而减小。由FAPUD T系列共混（用三乙胺中和）制成的FPM薄膜的表面能逐渐降低至临界氟浓度（0.02797 wt％）以上。然而，对于FAPUD 25Na系列的共混物（用碳酸钠中和），由于Na盐的增加，表面能增加到临界氟浓度（0.02797 wt％）以上。 FAPUDs显示出氟的天然热行为。但是，共混膜的热性能类似于纯PUD。这表明添加FAPUD时，PUD的形态几乎不变。 （C）2002 Wiley Periodicals，Inc. [参考：17]

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