文献类型：期刊文献

中文题名：泡沫凝胶性质的几种影响因素

英文题名：Effects of Several Factors on the Properties of a Foamed Gel

作者：陈启斌[1];马宝歧[2];倪炳华[2]

机构：[1]华东理工大学化学系,上海200237;[2]西安石油大学化学与化工学院,西安710065

年份：2007

卷号：33

期号：1

起止页码：71

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20071510544965);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：泡沫凝胶;泡沫质量;聚丙烯酰胺;交联剂;水基泡沫

外文关键词：foamed gel, foam quality; polyacrylamide, cross-linking agent, aqueous foam

摘要：泡沫凝胶是由含有发泡剂、聚合物和交联剂的溶液在气体作用下发泡形成的,它可以通过与制取普通水基泡沫相似的方法得到。研究了聚丙烯酰胺(PAM)浓度和气体流量对泡沫质量(φ)和气泡尺寸的影响。结果表明:泡沫凝胶的φ值随PAM的浓度和气体流量的增加而增大;φ值超过0.86时其气泡仍接近于球形;泡沫凝胶的气泡平均尺寸随PAM浓度的增大而增加,且浓度越大增加的趋势越明显;泡沫凝胶的气泡平均尺寸随气体流量的增加而增加。另外,还研究了泡沫凝胶体系的稳定性随温度的变化及存放时间对气泡尺寸的影响,可以证实,在30℃以下,泡沫凝胶的稳定性较好,高于35℃时,其稳定性变差;存放时间对泡沫凝胶的气泡尺寸影响非常明显。
A foamed gel is generated in a cross-linking polymer solution containing a foaming agent ,under acration. The method used is similar to those for general aqueous foam generation. This work investigated the effects of the different concentrations of polyacrylamide and the gas flow rates on the foam quality （4） and the air bubble size respectively. Results show that Ф value increases with the concentration of PAM and gas flow rate, and the air bubble still appeared as a ball when Ф value reaches above 0. 86. On one hand, the mean size of air bubble increases with the concentration of PAM, the higher the concentration, the sharper the increasing; on the other hand, the mean size of bubble increases with the gas flow rate. In addition, the variation of the stability of a foamed gel with temperature and the effect of time on bubble size were studied too. It is proved that under 30 ℃, the stability of foamed gel is satisfactory, whereas above 35 ℃, it becomes unsatisfactory and time has a significant effect on the bubble size.