摘要
在60～90℃范围内,以AIBN、BPO为引发剂进行甲基丙烯酸甲酯(MMA)～苯乙烯(St)本体共聚,研究了高转化率下聚合温度、引发剂浓度及单体配比对共聚速度的影响。结果表明,聚合温度升高、引发剂浓度增大及单体配比中MMA含量增加,均使MMA～St共聚速率增大。但当聚合反应进行到转化率达70%左右时,聚合速率开始显著降低?当转化率达到90%以上时,聚合反应几乎停止。推导并关联了高转化率下共聚动力学模型,在转化率70%以下,模型计算值与实验结果符合很好,该模型为MMA～St共聚生产控制提供了理论依据。
The bulk copolymerization of MMA/St was initiated by AIBN and BPO at 60-90℃. The effects of polymerization tem-perature, initiator concentration, and the monomer ratio on high conversion copolymerization rate were studied. The resultsshowed that MMA～St copolymerization rate increased with the increase of polymerization temperature, initiator concentrationand MMA content in monomer ratio. The copolymerization rate began to decrease obviously when the conversion was about70%, and stopped almost when the conversion was above 90%. The high conversion copolymerization kinetic model was de-rived and correlated. When the conversion was 70%, the model agreed well with the experimental results. The model providesthe theoritical basis for the controlling of MMA/St copolymerization production.
出处
《塑料工业》
CAS
CSCD
北大核心
1990年第4期7-11,20,共6页
China Plastics Industry
基金
国家自然科学基金
