摘要
通过研究共聚甲醛生产过程中的反应温度、引发剂用量、反应物配比、反应物二氧五环添加方式及聚合方式、捏合机螺杆转速对共聚甲醛转化率及产率的影响,确定最佳聚合反应条件以提升共聚甲醛的产率.研究结果表明:当反应温度为88℃,引发剂三氟化硼用量为50 ppm,二氧五环占整个物料比例为3.5%,采用三氟化硼与二氧五环先期引发聚合时产物转化率达到77.85%;当螺杆转速为35 r/min时,产率达75.53%,此时,聚甲醛生产工艺参数达到最优,聚合反应稳定,能够满足聚甲醛生产装置长周期运行要求.
The influence of reaction temperature,the amount of initiator BF3,reactant ratio,DOX addition and polymerization method,and kneading machine screw speed for the conversion rate and yield of POM was studied to decide the best polymerization reaction condition to improve the yield of POM. The results show that with the reaction temperature of 88 ℃,initiator BF3 consumption of 50 ppm,DOX accounted for the entire material ratio of 3.5%,and DOX early polymerization conditions,the conversion rate reached 77.85%,and then with the screw speed of 35 r/min,the yield reached75.53%,as POM production process parameters to achieve optimal polymerization stability.
引文
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