Method for controllably polymerizing hexafluoropropylene oxide at room temperature

The invention belongs to the field of polymerization of hexafluoropropylene oxide, and particularly relates to a controllable polymerization method of hexafluoropropylene oxide at room temperature. According to the method, an anionic initiator is prepared from alkali metal fluoride, an ether solvent and carbonyl fluoride in a high-boiling-point fluorine-containing solvent, and hexafluoropropylene oxide is initiated to prepare the hexafluoropropylene oxide polymer. The method provided by the invention is simple in production operation; the used raw materials, namely the ether solvent and the fluorine-containing solvent, have great boiling point difference with a polymerization product, can be easily separated and can be reused after being purified; and the polymerization reaction temperature is 0-30 DEG C, the conditions are mild, and large-scale industrial preparation is easy. 本发明属于六氟环氧丙烷的聚合领域，具体涉及室温条件下六氟环氧丙烷可控聚合的方法。所述方法在高沸点含氟溶剂中，使用碱金属氟化物、醚类溶剂、碳酰氟制备得到阴离子引发剂，引发六氟环氧丙烷制备六氟环氧丙烷聚合物。本发明所提供的方法，生产操作简单；使用的原料醚类溶剂和含氟溶剂与