聚合物材料制品的性能与成型加工过程有着密切的联系, 因此在线监控加工过程中材料的状态至关重要。 根据在线监控实时反馈的数据, 能够实现加工工艺参数的及时调整, 确保生产过程的稳定性, 从而保证产品质量、 减少能源浪费、 提高生产效益。 近红外光谱在线测量技术是一种成本低、 实时性强, 可以准确定量分析的技术, 已在很多生产领域得到了应用, 然而在聚合物加工领域仍处于研究阶段。 本文从测量聚合物中的组分含量、 熔融指数、 熔体密度、 填充物的分散性四个方面概述了近红外光谱在线测量技术在聚合物加工中的应用研究进展, 指出了近红外光谱在线测量技术尚存在的问题, 给出了几点建议, 最后对近红外光谱在线测量技术未来的发展进行了展望。 指出在未来几十年里, 随着光纤光谱仪器科学、 计算机科学以及化学计量学方法的发展, 近红外光谱在线测量技术在原始数据稳定性、 预处理方法、 建模方法及模型的稳健性与准确性上将会有长足的进步, 将会在更多的领域推广应用, 产生巨大的经济与环保价值。

Due to the significant impact of processing on the performance of polymer products, it is crucial to develop in-line monitoring methods on processing. Based on the feedback data from in-line monitoring the processing parameters can be adjusted, which will contribute to the stability of production, thereby ensuring product quality, reducing energy waste and improving production efficiency. Near infrared spectroscopy (NIR), a low-cost, real-time and accurately quantitative analysis technology, has been widely used in many areas but still under study in polymer processing. The applications of in-line NIR monitoring technology in measuring the content of component, melt index, melt density and dispersion of filler of polymer during processing were reviewed. The existing problems about in-line NIR monitoring technology were pointed out, as well as the suggestions for the corresponding problems. The future trends of in-line NIR monitoring technology were discussed. With the development of fiber optic spectrometer, computer science and chemometrics, it is foreseen that the in-line NIR monitoring technology will make considerable progress in the stability of raw data, methods of pretreatment and modeling, the robustness and accuracy of model. Therefore, in-line NIR monitoring technology will be applied to more areas generating the great economic and environmental value.