The characteristic groups of polymeric pour point depressant(PPD)were analyzed by FT-IR and NMR techniques.The crystallization properties of various types of wax and PPD were measured by XRD.

• 采用红外光谱仪、核磁共振波谱仪对聚合物的合成特征基团进行了表征,并采用X射线衍射仪对不同型号蜡及降凝剂的结晶性能进行了分析测试。