大象牙膏实验喷射成形影响因素研究  

Study on Parameters Enabling Jetting and Shaping Elephants' Toothpaste

作　　者：董永瑞 王艳 刘思成 张子涵 梁德强[1] 王宝玲 李维莉[1] DONG Yongrui;WANG Yan;LIU Sicheng;ZHANG Zihan;LIANG Deqiang;WANG Baoling;LI Weili(Department of Chemical Science and Technology,Kunming University,Kunming,Yunnan,China 650214)

机构地区：[1]昆明学院化学科学与技术系,云南昆明650214

出　　处：《昆明学院学报》2018年第3期100-102,共3页Journal of Kunming University

基　　金：昆明学院青年骨干教师培养工程资助项目

摘　　要：作为最具观赏性的化学实验之一,"大象牙膏"目前多数不能成形且喷射无力.系统的反应条件优化表明,过氧化氢质量分数、催化剂类别和用量、发泡剂类别和用量,以及反应容器等因素共同决定"大象牙膏"实验能否喷射成形.研究结果显示,使用质量分数为50%的H2O2(50 m L),KI(7.47 g,溶于15 m L水),洗洁精(12 m L),食用色素(5滴)的组合能够得到炫彩夺目、喷射力强且成形的"大象牙膏".Considered as one of the most amazing chemical experiments,＂Elephants＇ Toothpaste＂was infrequently presented as a jet with good shape. Systematic optimization of reaction conditions showed that the mass fraction of hydrogen peroxide,the catalyst and its loading,the foaming agent and its dosage,and the reaction vessel all exert significant effects on the gushing and shaping of the＂Elephants＇ Toothpaste＂. The result showed that the combination of 50% H2 O2（ 50 m L）,KI（ 7. 47 g,dissolved in 15 m L water）,dishwashing liquid（ 12 m L）,and food coloring（ 5 drops） permits the formation of colored and well-shaped ＂Elephants＇ Toothpaste＂gusher.

关 键 词：大象牙膏 科普实验 趣味化学 过氧化氢催化分解 法老之蛇 

分 类 号：G633.8[文化科学—教育学] O643.32[理学—物理化学]