不同产地凹凸棒粘土理化性质及其对复合保水剂性能影响研究

    Study on physicochemical properties and water absorbencies of superabsorbent composites of palygorskite clays from different places

    • 摘要: 本文比较了甘肃、江苏和安徽所产凹凸棒粘土的理化性质,并进行了有机-无机复合保水剂的制备。甘肃凹凸棒粘土的品位相对较低,但制备的复合保水剂在蒸馏水中的吸水率可达1355g/g,介于江苏和安徽凹凸棒粘土制得的保水剂之间,而在生理盐水中的吸水率是三者最高的。该结果说明,凹凸棒含量的高低对复合保水剂的性能无直接影响,这为低品位凹凸棒粘土的开发利用开拓了新途径。

       

      Abstract: The mineralogy and chemical constitute of palygorskite clays from Gansu, Jiangsu and Anhui province were investigated with XRF, XRD, FTIR etc, and polyacrylamide/palygorskite superabsorbent composites were prepared. Although Gansu palygorskite clay has the lowest palygorskite content in three clays, the results indicate that water absorbencies of the superabsorbent composite that was 1355 g/g in distilled water was in between two other superabsorbents, and 89 g/g in 0.9% NaCl solution which was highest in three superabsorbents. It shows that palygorskite content in clay can not effect directly on properties of the superabsorbent composite. This result implies that a low content palygorskite clay is useful in some areas such as the preparation for superabsorbent composite.

       

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