CAJ | 학술논문

采用两步转相聚合法，以全氟烷基乙基丙烯酸辛酯（FEA ）为功能单体，制备了自乳化全氟烷基阳离子聚丙烯酸酯乳液．通过红外光谱（FT‐IR）和核磁共振F谱（19 F‐NMR）对聚合物的结构进行了表征，测量了涂膜的接触角并计算表面自由能，用X射线光电子能谱（XPS ）检测分析了元素梯度分布情况，并考察了该涂膜的耐热性和耐老化性能．结果表明，含氟烷基链段有明显的表面富集现象，全氟单体的加入有效地降低了涂膜的表面自由能．同时，热处理温度对涂膜表面能有较大影响，当 FEA 用量为38％时，涂膜的表面自由能可降至12．08 mJ／m2．并且，涂膜具有较好的耐热性和耐老化性能．
채용량보전상취합법，이전불완기을기병희산신지（FEA ）위공능단체，제비료자유화전불완기양리자취병희산지유액．통과홍외광보（FT‐IR）화핵자공진F보（19 F‐NMR）대취합물적결구진행료표정，측량료도막적접촉각병계산표면자유능，용X사선광전자능보（XPS ）검측분석료원소제도분포정황，병고찰료해도막적내열성화내노화성능．결과표명，함불완기련단유명현적표면부집현상，전불단체적가입유효지강저료도막적표면자유능．동시，열처리온도대도막표면능유교대영향，당 FEA 용량위38％시，도막적표면자유능가강지12．08 mJ／m2．병차，도막구유교호적내열성화내노화성능．
The self‐emulsified perfluoroalkyl cationic polyacrylate emulsion was prepared u‐sing perfluoroalkyl ethyl acrylate (FEA) as functional monomer by two‐step turn phase pol‐ymerization .The structure of the polymer was characterized by FT‐IR and 19 F‐NMR .And the contact angle of the membrane was measured and surface energy was calculated ,the gra‐dient distribution of elements was examined X‐ray photoelectron spectroscopy (XPS ) ,then the heat resistance and aging resistance were also investigated .The results showed that per‐fluoroalkyl chains had significant enrichment to the surface ,the surface free energy was ef‐fectively reduced with the introduction of perfluoro monomer .At the same time ,heat treat‐ment temperature also had a greater impact of the surface free energy .When the dosage of FEA was 38% ,the surface free energy was reduced to 12 .08 mJ/m2 ,and the films were pro‐vided with excellent heat and aging resistance properties .