| D-山梨醇对聚丙烯酸-水基氧化铝悬浮液流变性能的影响 |
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| 引用本文： | 于晓琳,肖春霞,郭露村.D-山梨醇对聚丙烯酸-水基氧化铝悬浮液流变性能的影响[J].无机材料学报,2011(5):545-549. |
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| 作者姓名： | 于晓琳 肖春霞 郭露村 |
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| 作者单位： | 南京工业大学材料科学与工程学院; |
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| 基金项目： | 江苏省科技支撑计划项目(BE2009169)~~ |
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| 摘 要： | 研究了D-山梨醇(D-sorbitol)对聚丙烯酸(poly(acrylic acid))(PAA)稳定的水基氧化铝(Al2O3)悬浮液流变性能的影响.实验发现:在pH为9.0时,对于固含量为30vol%～40vol%的Al2O3悬浮液,少量D-山梨醇的加入皆能明显提高其分散稳定性.当D-山梨醇的添加量占分散剂总量(0.5wt%)的20%时,悬浮液粘度最低.且添加二元分散剂PAA/D-山梨醇的悬浮液具有更好的抗电解质性能.分别对单一PAA分散的Al2O3及二元分散剂分散的Al2O3进行了红外光谱表征.结合流变与红外实验结果,分析了山梨醇的作用机理:部分山梨醇吸附在Al2O3颗粒表面,部分山梨醇与PAA以氢键形式结合,增大了颗粒间的空间位阻,提高了悬浮液的流变性能.
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| 关 键 词： | 聚丙烯酸 D-山梨醇 氧化铝悬浮液 流变性 |
Effect of D-sorbitol on Rheology of Aqueous Alumina Suspensions with Poly(Acrylic Acid) |
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| YU Xiao-Lin,XIAO Chun-Xia,GUO Lu-Cun.Effect of D-sorbitol on Rheology of Aqueous Alumina Suspensions with Poly(Acrylic Acid)[J].Journal of Inorganic Materials,2011(5):545-549. |
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| Authors: | YU Xiao-Lin XIAO Chun-Xia GUO Lu-Cun |
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| Affiliation: | YU Xiao-Lin,XIAO Chun-Xia,GUO Lu-Cun(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Effect of D-sorbitol addition on rheological properties of aqueous alumina suspensions dispersed with poly(acrylic acid)(PAA) was investigated.The results showed that for the aqueous alumina suspensions with 30vol%-40vol% solids loadings,small amount of D-sorbitol can significantly enhance the stability of alumina suspen-sions with PAA at pH=9.0.When the total amount of dispersant was 0.5wt% and the concentration of D-sorbitol was 20%,the viscosity of suspensions was the lowest.In addition,the suspensions d... |
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| Keywords: | poly(acrylic acid) D-sorbitol alumina suspension rheology |
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