It is a rapid and nondestructive method for the simultaneous measurement of different constituents in various products. Near infrared (NIR) spectroscopy is one of the most effective alternatives in this context. However, these methods cannot measure quality of the resin fleetly, non-destructively and contiguously. In recent years, the instrumental analytical techniques most frequently used to identify and characterize resins, which include mass spectrometry (MS), nuclear magnetic resonance (NMR), iR spectroscopy, gas chromatography (GC) and high performance liquid chromatography (HPLC). In fact, analysis times can range from a few minutes to several hours this lengthens production cycles, raises costs and lowers outputs. Such methods are usually time-consuming, use large amounts of reagents and produce waste. The analytical methods typically used for this purpose are based on the classical techniques recommended. The resin content is the important index of the phenolic resin it will influence the properties of composite products. Phenolic resin is widely used as an industrial material because of its good heat resistance, electrical insulation, dimensional stability, and chemical resistance. Key words: NIR spectroscopy Partial least square regression phenolic resin.
NIR spectroscopy is an effective choice for the accurate, expeditious analyzing quality of phenolic resin. The results of the paired t-test revealed that there was no significant difference between the NIR method and the reference method. The maximal predicted error and the standard deviation of the differences were 0.96 and 0.51 % for resin content. 8 samples were withdrawn at different time stages for analysis with the proposed quantitative models the data thus obtained were compared with those provided by reference methods.
The partial least square regression was used to develop the calibration model of the resin content. In this work, Near-infrared (NIR) spectroscopy has been applied for resin content of phenolic resins. The traditional analytical methods used to determine phenolic resin are slow and produce environmentally unfriendly waste. Box: 410, Harbin 150001, People's Republic of ChinaĪbstract. Qu1 1 School of management Harbin institute of technology, Harbin, China, 150001 2 Financial Office of Heilongjiang Province, Harbin, China, P.O. ANALYSIS OF RAPID METHOD FOR THE QUALITY INDEX OF PHENOLIC RESINS AND BENEFIT