In order to improve the timeliness of monitoring during the synthesis process of isocy-anate polymer and solve the delay problem of the traditional methods.In this article,the reaction process of isocyanate polymer is monitored by using the special UV visible light absorption spec-trum of monomer diisocyanate.The test results show that the monitoring method has simple opera-tion,fast monitoring speed and high accuracy,and can reflect the reaction process of isocyanate polymer in time.
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