氯化1-十四烷基-3-羧甲基咪唑的合成及其对氢氧化镁的改性  

Synthesis of 1-N-Tetradecyl-3-Carboxymethyl Imidazole Chloride and Modification of Magnesium Hydroxide Properties with It

作　　者：王平[1] 丁运生[1,2] 陆晶晶[1] 陈龙[1] 陈胜利[1] 刘洋[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009 [2]可控化学与材料化工安徽省重点实验室,安徽合肥230009

出　　处：《石油化工》2010年第6期631-635,共5页Petrochemical Technology

基　　金：安徽省自然科学基金项目(090414180);国家自然科学基金项目(50973025);安徽高校省级自然科学研究重点项目(KJ2009A019);合肥工业大学创新实验项目(2009CXSY119;2009CXSY114)

摘　　要：合成了新型咪唑基离子液体氯化1-十四烷基-3-羧甲基咪唑([C14cim]Cl),用其改性氢氧化镁(MH),得到改性MH(MH-ICl)。通过比较MH和MH-ICl对邻苯二甲酸二辛酯(DOP)的吸油值及它们在二甲苯中的分散性,评价了[C14cim]Cl对MH的改性效果,并与硬脂酸(SA)的改性效果进行了对比;考察了MH-ICl对高密度聚乙烯(HDPE)的阻燃和力学性能的影响。实验结果表明,MH-ICl对DOP的吸油值明显下降,且在二甲苯中的分散性较MH明显提高;分散在HDPE基体中的MH-ICl与HDPE基体间具有较强的相互作用,可改善HDPE的阻燃和力学性能;[C14cim]Cl对MH的改性效果明显优于SA。FTIR表征结果显示,[C14cim]Cl与MH之间可能同时存在非价键力和价键力的作用。1 -N-tetradecyl-3-carboxymethyl imidazole chloride （ [ C14 cim ] Cl）, a novel imidazolium ionic liquid, was synthesized and used as modifier of magnesium hydroxide （MH）. The obtained product MH[ C14cim]Cl（ MH-ICl） could heighten flame retardancy and mechanical properties of high-density polyethylene （HDPE）. Stearic acid （SA） was also added to modify properties of MH to get MH-SA（ MH-Is ） for comparing with the synthesized [ C14 cim ] Cl. The modification effects were evaluated through both dioctyl phthalate absorption values of MH, MH-ICl and MH-Is and their dispersion properties in xylene. Furthermore, the effects of MH, MH-Is and MH-ICl on flame retardancy and mechanical properties of HDPE were investigated separately. The results showed that the dispersion of MH-IICl in xylene was higher than that of MH, so the interaction between MH-ICl and HDPE was enhanced which could improve the flame retardancy and mechanical properties of HDPE. [ C14cim]Cl was a better modifier for MH than SA since there might be both chemical bonding and non-chemical bonding between [C14cim] Cl and MH, which was confirmed by means of FTIR.

关 键 词：氯化1-十四烷基-3-羧甲基咪唑 离子液体 氢氧化镁 硬脂酸 高密度聚乙烯 阻燃剂 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]