| THIEC改性三聚氰胺甲醛树脂泡沫的制备及其性能表征 |
| |
| 引用本文： | 雷昆,孙云龙,徐衡,郎美东.THIEC改性三聚氰胺甲醛树脂泡沫的制备及其性能表征[J].医学教育探索,2016,29(3):329-334. |
| |
| 作者姓名： | 雷昆 孙云龙 徐衡 郎美东 |
| |
| 作者单位： | 华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237,华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237,华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237,华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237,华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237,华东理工大学煤气化及能源化工教育部重点实验室, 上海煤气化工程技术研究中心, 上海 200237 |
| |
| 基金项目： | 国家自然科学基金资助项目(U1402272);上海自然科学基金资助项目(15ZR1409500);中央高校基本科研业务费(WB1514074,WB1514076) |
| |
| 摘 要： | 以表面活性剂水溶液为液相介质、空气为气相介质,采用高速摄像机研究表面活性剂对二次雾化破裂性质的影响,重点阐述了破裂形变特征上的变化。研究结果表明:在形变特征方面,临界胶束浓度(CMC)对二次雾化袋状破裂形态有着重要影响,除了最大液滴直径形变率(df,m/d0)基本不变,保持在1.64左右外,最大液环直径形变率(dr,m/d0)、最大轴向生长率(lm/d0)、最大径向生长率(hm/d0)和长宽比(lm/hm)等在表面活性剂质量分数小于CMC时均变化迅速,但在表面活性剂质量分数大于CMC后变化趋于平缓,dr,m/d0稳定在4.16左右,lm/d0稳定在6.36左右,lm/hm稳定在1.53左右。
|
| 关 键 词： | 表面活性剂 表面张力 破裂形态 二次雾化 液滴 |
| 收稿时间： | 3/3/2016 12:00:00 AM |
Preparation and Performance Characterization of Tripolycyanamide Formaldehyde Resin Foam Modified by THIEC |
| |
| LEI Kun,SUN Yun-long,XU Heng and LANG Mei-dong.Preparation and Performance Characterization of Tripolycyanamide Formaldehyde Resin Foam Modified by THIEC[J].Researches in Medical Education,2016,29(3):329-334. |
| |
| Authors: | LEI Kun SUN Yun-long XU Heng and LANG Mei-dong |
| |
| Institution: | Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China,Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China,Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China,Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China,Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China and Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China |
| |
| Abstract: | The influence of surfactant on secondary atomization in the bag breakup regime of surfactant solution was studied experimentally by high-speed camera using aqueous surfactant solution as liquid medium and atmosphere as gas medium.The change of deformation and time characteristics were elaborated.The results showed that,in the aspect of deformation characteristics,as a crucial parameter of surfactant,the critical micelle concentration (CMC) has an important effect on secondary atomization;all deformation parameters like maximum dimensionless rim diameters (dr,m/d0),radial length (lm/d0),axial length (hm/d0),length-width ratio (lm/hm) of bag changed fast except that the largest droplet diameter deformation rate kept about 1.64 when the surfactant concentration was below the CMC.However,the variation of these parameters turned to be steady when the surfactant concentration exceeded the CMC.dr,m/d0 stabilized at about 4.16,lm/d0 stabilized at about 6.36,and lm/hm stabilized at about 1.53. |
| |
| Keywords: | surfactant surface tension morphology secondary atomization liquid droplet |
|
| 点击此处可从《医学教育探索》浏览原始摘要信息 |
| 点击此处可从《医学教育探索》下载免费的PDF全文 |
|
