用偶氮二异丁酸二甲酯(AIBME)代替偶氮二异丁腈(AIBN)作聚合物多元醇(POP)用的引发剂,不仅可以解决后者分解产物堵塞管道的问题,而且还使POP产品具有接枝率高、黏度低的优点,因而有利于改善后续聚氨酯产品的性能。AIBME分解产物沸点低,毒性小,在脱单体时容易脱除,因此获得的POP产品安全性更好。2种引发剂的引发活性接近,在相同条件下转化率基本相同,但AIBME的价格稍高。 The use of dimethyl azobisisobutyrate (AIBME) instead of azobisisobutyronitrile (AIBN) as an initiator for polymer polyols (POP) can not only solve the problem of blockage of the latter by decomposition products, but also So that POP products have the advantages of high grafting rate, low viscosity, which will help improve the performance of subsequent polyurethane products. AIBME decomposition products have low boiling point, low toxicity and easy removal when desolvented, so the POP products obtained are more safe. The priming activities of the two initiators were close, and the conversion rate was basically the same under the same conditions, but the price of AIBME was slightly higher.