己内酰胺环状低聚物轶事——“环公主”的百变人生  

The Tale of Caprolactam Cyclic Oligomers:The Ever-changing Life of“Princess Cyclo”

作　　者：郑红 彭馨[1] 易春旺[1] Hong Zheng;Xin Peng;Chunwang Yi(College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410000,China)

机构地区：[1]湖南师范大学化学化工学院,长沙410000

出　　处：《大学化学》2024年第9期40-47,共8页University Chemistry

基　　金：湖南省教改项目(HNJG-2022-0553)。

摘　　要：在己内酰胺水解开环制备聚酰胺6的过程中会产生大量环状低聚物,其中环状二聚体易团聚,影响工艺安全和产品性能。因此了解环状低聚物的相关特性对保证生产工艺安全和提升产品品质十分重要。本文采用拟人的手法,生动形象地介绍了环状低聚物的特性,科普了环状二聚体的形成机制、晶型转变行为和危害,提出了工艺优化的方法。During the hydrolysis process of caprolactam to produce polyamide 6,a considerable number of cyclic oligomers are inevitably formed.Among these,the cyclic dimer,with its propensity for aggregation,poses significant challenges to both process safety and product quality.Thus,understanding the characteristics of cyclic oligomers is crucial for ensuring process safety and enhancing product quality.This paper employs a personification approach to vividly describe the properties of cyclic oligomers,elucidating the formation mechanism of cyclic dimers,delineating the behavior of crystal phase transitions,and highlighting the detrimental effects of cyclic dimers on industrial production.Moreover,it proposes methods for process optimization.

关 键 词：己内酰胺环状低聚物 环状二聚体 晶型转变 性能 工业影响 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]