Abstract:

The hydrogenation degree of synthetic rubber has a very important impact on the performance of products. A variety of off-line detection methods for hydrogenation degree of synthetic rubbers are discussed, such as physical detection method, chemical additive process and instrumental analysis method. Taking into account the application status, measurement error and limitations of instrumental analysis, the applicability of Infrared Absorption Spectroscopy and Nuclear Magnetic Resonance Spectroscopy for detecting the hydrogenation degree of SBS, SBR, NBR, SIS and other synthetic rubbers are emphatically discussed. In order to solve such problems as long sample analysis cycle and lag of detection data, the key points of process design for the development of an on-line intelligent hydrogenation detection method based on instrumental analysis technology are discussed from the aspects of sampling method, sample handling and instrument protection.

Key words: synthetic rubber, hydrogenation degree, instrumental analysis method, polydiene links, online detection