相变微胶囊制备用密胺树脂预聚体的合成及性能表征  

Synthesis and characterization of melamine-formaldehyde prepolymer applied in microencapsulated phase change material

作　　者：王先锋[1] 彭佩[1] 赵涛[1,2] 

机构地区：[1]东华大学化学化工与生物工程学院,上海201620 [2]东华大学,生态纺织教育部重点实验室,上海201620

出　　处：《化工新型材料》2016年第7期61-63,66,共4页New Chemical Materials

基　　金：中央高校基本科研业务费专项基金(14D310507)

摘　　要：通过改变预聚合反应条件制备了不同性能的预聚体,考察了反应条件对预聚体黏度和稳定性的影响。实验结果表明,质量浓度对预聚体黏度的影响远远大于反应时间、甲醛与三聚氰胺(F/M)摩尔比和反应pH值等其他因素,预聚体的稳定性随着F/M摩尔比的减小、反应时间的延长以及质量浓度的降低而增强,随着pH值的增加先增强后减弱。通过合理控制反应条件,可以制得低黏度高稳定性的预聚体和在室温下稳定储存的低F/M摩尔比预聚体。Different kinds of prepolymer were fabricated by changing the reaction conditions whose influence on viscosity and stability of prepolymer was investigated.The results showed that the mass concentration exhibited more significant influence on viscosity than other factors.The stability increased with the decrease of formaldehyde/melamine（F/M）molar ratio,mass concentration and the increase of reaction time,but decreased again after a significant increase with the rise of pH.Prepolymers with low viscosity,low F/M molar ratio but high stability at room temperature could be obtained through controlling the reaction conditions properly.

关 键 词：密胺树脂预聚体 黏度 稳定性 相变微胶囊 

分 类 号：TQ317[化学工程—高聚物工业]