摘要
以异氟尔酮二异氰酸酯(IPDI)、聚己二酸丁二醇酯(CMA-1044)、1,4-丁二醇(BDO)和二羟甲基丙酸(DMPA)为原料合成了以—NCO封端的聚氨酯预聚体(PU),然后加入超支化聚合物进行改性,合成了超支化聚氨酯(HBPU),再通过接枝反应使全氟己基乙醇(S104)与HBPU反应,制得了一种端氟烷基超支化聚氨酯(HBPUF)。用FTIR、1HNMR、TEM、DLS、TGA、XPS以及静态接触角测量仪对产物进行表征。结果表明:HBPUF乳胶粒具有明显的核-壳结构且乳液稳定性良好;HBPUF膜的热分解温度比PU膜提高了17.4℃、比HBPU膜提高了7.1℃。XPS分析表明:HBPUF膜中氟链段向表面迁移并富集,与PU膜相比,HBPUF膜表面的水接触角从77.8°增至113.9°,吸水率从136.2%降到11.1%,膜疏水性增强。
Polyurethane prepolymer（PU） was prepared with isophorone diisocyanate（IPDI）,polybutyleneglycol adipate（CMA-1044）,1,4-butanediol（BDO） and dimethylolpropionic acid（DMPA） as raw materials. Then hyperbranched polyurethane（HBPU） was obtained by a reaction with hyperbranched polymer. A grafting reaction between 2-（perfluorohexyl） ethanol（S104） and HBPU led to fluoroalkyl-terminated hyperbranched polyurethane（HBPUF）. The resulting products were characterized by FTIR,1HNMR,TEM,DLS,TGA,XPS and static contact angle analyzer. The results show that the HBPUF latex possesses obvious core-shell structure and favorable stability. Thermal decomposition temperature of the HBPUF film enhances 17. 4 ℃ comparing with PU films and 7. 1 ℃comparing with HBPU films. XPS analysis shows that the fluorine segment of the HBPUF film has a tendency to migrate and enrich at the film-air interface,which makes the water contact angle on the HBPUF film increase from 77. 8° to 113. 9° and the water absorption of the HBPUF film reduce from136. 2%（PU film） to 11. 1%. The hydrophobicity of the HBPUF film accordingly improved.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2016年第10期1147-1152,共6页
Fine Chemicals
基金
陕西省教育厅专项(15JK1103)
中国博士后基金面上项目(2014M562516XB)
陕西省科技厅科技计划项目(2011SZS007)
陕西省重点科技创新团队(2013KCT-08)~~
关键词
有机氟
超支化聚合物
水性聚氨酯
耐水性
纺织染整助剂
organic fluorine
hyperbranched polymer
waterborne polyurethane
water resistance
dyeing and finishing auxiliaries
