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以超临界CO2为反应介质,制备得到三氟氯乙烯(CTFE)和乙烯基正丁基醚(BVE)共聚物,研究了单体配比、反应温度、引发剂用量、单体浓度对聚合反应及聚合物的结构与性能的影响情况。结果表明:通过控制单体配比及其他实验条件,可以得到不同结构、不同氟含量的含氟聚合物;当单体配比中CTFE的比例增大到一定程度(BVE/CTFE质量比<6/10),实验得到的聚合物是交替共聚物。同时实验发现,聚合反应过程中压力的变化与反应的进程是同步的。
The copolymer of chlorotrifluoroethylene (CTFE) and vinyl n-butyl ether (BVE) was prepared by using supercritical CO2 as reaction medium. The effects of monomer ratio, reaction temperature, initiator dosage and monomer concentration on the polymerization reaction And polymer structure and performance of the situation. The results showed that the fluoropolymer with different structure and different fluorine content could be obtained by controlling the monomer ratio and other experimental conditions. When the proportion of CTFE in the monomer ratio increased to some extent (BVE / CTFE mass ratio <6 / 10), the experimental polymer is alternating copolymer. At the same time, it was found that the change of pressure during the polymerization reaction is in synchronization with the progress of the reaction.