With the help of the Ubbelohde viscometer method as reference, athe method of NIR determination of polycaprolactam chips relative viscosity was established.

• 利用中石化巴陵分公司聚合装置生产的样品和用乌氏黏度计法所做分析数据, 建立了聚己内酰胺切片相对黏度近红外光谱定量分析模型。