CAJ | 학술논문

根据聚甲醛的生产特点，分析了其阳离子开环聚合机理、聚合反应动力学、暴聚现象以及暴聚机理。聚甲醛生产过程中产生暴聚的主要原因是引发剂加入量的急剧增加和相对分子质量调节剂加入量的急剧减少。结合生产实际，引发剂加入量一般约为100μg/g，并且要求其含水量低于50μg/g；相对分子质量调节剂的加入量一般不低于总进料量的0.12%。通过改变引发剂和相对分子质量调节剂的加入方式以及改进聚合反应器的加料管深度等可避免暴聚的发生。
근거취갑철적생산특점，분석료기양리자개배취합궤리、취합반응동역학、폭취현상이급폭취궤리。취갑철생산과정중산생폭취적주요원인시인발제가입량적급극증가화상대분자질량조절제가입량적급극감소。결합생산실제，인발제가입량일반약위100μg/g，병차요구기함수량저우50μg/g；상대분자질량조절제적가입량일반불저우총진료량적0.12%。통과개변인발제화상대분자질량조절제적가입방식이급개진취합반응기적가료관심도등가피면폭취적발생。
The cationic ring-opening polymerization mechanism, polymerization reaction kinetics, implo-sion phenomenon and implosion mechanism of polyoxymethylene are analyzed according to its production charac-teristics. The main causes of implosion in the production of polyoxymethylene are the rapid increase of the cata-lyst dosages and the rapid decrease of the relative molecular mass regulator dosages. The amount of catalyst is about 100 μg/g with water content lower than 50 μg/g and the amount of relative molecular mass regulator is not less than 0.12% of the total feed combined with the actual production. Implosion can be avoided by changing the feeding methods of catalyst and relative molecular mass regulator, improving the depth of polymerization reactor feed pipe, etc.