2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The ef...2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The effect of polymerization retarader,the amount of sulfuric acid and reaction duration on the yield of TFPA was reported.The results showed that the yield of TPFE was 65～70% based on the theoretical calculation under optimized experimental conditions.展开更多
文摘采用十二烷基硫酸钠(SDS)和聚乙二醇辛基苯基醚(OP乳化剂)组成的复合乳化剂,制备了甲基丙烯酸1,1,5-三氢全氟戊酯(OFPM A)-丙烯酸丁酯(BA)-甲基丙烯酸甲酯(MM A)三元共聚乳液。通过FT-IR、1H-NM R对共聚物进行了表征。对乳液的稳定性、乳胶膜的耐溶剂性进行了研究,用接触角法研究了共聚物膜表面的性质。结果表明,加入含氟丙烯酸酯单体进行共聚合反应时,所得共聚物膜的表面自由能与无氟共聚物膜比较有显著的降低,当含氟单体的加入量达到质量分数为20%时,所得膜的表面自由能降低到25.12 m J/m2。对该含氟膜进行退火处理后,其表面自由能进一步降低到23.52 m J/m2。
文摘2,2,3,3-tetrafluoropropyl acrylate(TFPA)was prepared by esterification of acrylic acid and 2,2,3,3-tetrafluoropropanol in the presence of polymerization retarder,dehydration agent and concentrated sulfuric acid.The effect of polymerization retarader,the amount of sulfuric acid and reaction duration on the yield of TFPA was reported.The results showed that the yield of TPFE was 65～70% based on the theoretical calculation under optimized experimental conditions.
