用４．４＇－二氟苯酮、１，４－二氯苯和硫化钠为原料，常压下采用分开预聚和共预聚两种不同的预聚方式，合成了聚苯硫醚酮－聚苯硫醚共聚物。用红外光谱、Ｘ射线衍射、差示热扫描和热失重分析等手段，对共聚物进行了初步表征，结果表明，不同配比的共聚物均为结晶性高聚物，并且具有较好的耐热性能，对于可溶性的共聚物还测定了其对数比浓粘度。 Using 4,4’-difluorophenone, 1,4-dichlorobenzene and sodium sulfide as raw materials, two kinds of prepolymerization and co-prepolymerization under normal pressure were used to synthesize polyphenylene sulfide ketone Polyphenylene sulfide copolymer. The copolymers were characterized by FTIR, X-ray diffraction, differential scanning calorimetry and thermogravimetric analysis. The results showed that the copolymers with different ratios were crystalline polymers and had good resistance Thermal properties, the logarithmic viscosity was also determined for soluble copolymers.