高分子量聚苯硫醚树脂合成方法的改进

Improved Synthesis of Poly(pphenylene sulfide)resin with High Molecular Weight

以硫化氢、氢氧化钠和对二氯苯为原料，磷酸钠作助剂，在六甲基磷酰三胺中进行常压缩聚反应，所得产物经分析测试表明为线型结晶性高分子量聚苯硫醚树脂原粉。产率９１．４％～９７．５％，成本低，易于大规模生产。产品直接作抽丝试验得到了高分子量聚苯硫醚纤维。

Using hydrogen sulfide(H2S) and sodium hydroxide(NaOH) and pdichlorobenzene (pDCB) as raw materials, sodium phosphate(Na3PO4) as an assistant, the crystal linear poly(pphenylene sulfide)resin with high molecular weight(HMWPPS) was synthesised during 4h￣6h under normal pressure in hexamethylphosphoryltriamide(HPTA). The product was used to do the melt spun test directly and the fiber of the HMWPPS was obtained. This method has following obvious advantages: the equipment is simple,operation is easy, reaction system has a higher activity, solvent is stable, yield is high, cost is low and it is easy to put into largescale production.