为提高厚防腐涂层的流变性能，在涂料中加入不同种类及含量的触变剂，优选出最佳触变剂，即2%改性聚酰胺和1%膨润土。通过不同剪切速率下的涂料粘度的测量，推导出Casson公式。结果表明，触变剂的加入能满足集装箱底涂料对流变性的要求。
The purpose of this study was to improve the rheological propertyof thick anticorrosive coatings. Varied thixotropic agents with different weight percent were added in anticorrosive coating. It proved that thixotropic agent consists of 2 weight percent modified polyamide and 1 weight percent bentonite has the best result. Viscosities of the coating at different rate of shear were tested, and Casson equation between coating viscosity and rate of shear was derived. The results show that the addition of thixotropic agent improves the rheological property of coating for handling container bottom obviously.
参考文献
| [1] | 马庆林.涂料工艺第六分册增订本[M].北京:化学工业出版社,1997:153-154. |
| [2] | Casson N.In Rheology of Disperse systems[M].New York: pergamon press,1959:84-104. |
| [3] | Van wazer;J R;Lyons J W.A Laborary Handbook of Rheology[M].New York: wiley Interscience,1963:50-161. |
| [4] | Sarkar N;Robert H Lalk .Rheological correlation with the application properties of latex paints[J].Journal of Petroleum Technology,1974,46(03):29-34. |
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