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首页> 外文期刊>Jordan Journal of Mechanical and Industrial Engineering >The Effect of Alkaline Additives on the Operating Conditions of Kaolinitic Polymerization
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The Effect of Alkaline Additives on the Operating Conditions of Kaolinitic Polymerization

机译：碱性添加剂对高岭土聚合操作条件的影响

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Jordanian kaolinite polymerization has been studied to determine the effect of using different alkaline materials such as NaOH, KOH, and Ca(OH)2, and sand as a filler on the compressive strength, durability under wet and dry conditions, and water absorption of the produced specimens. The studied parameters were mixing proportions such as; alkaline materials to kaolinite ratios, filler to kaolinite ratios, water to kaolinite ratios, and filler particles size. The polymerization step was carried out by mixing the kaolinitie and the filler with the alkaline solution in the case of NaOH and KOH before molding the specimens. In the case of Ca(OH)2, the kaolinitie, fillers, and powder of Ca(OH)2 were dry mixed together before water is added. The moulding step was carried out using a stainless steel mould at a pressure of about 15 MPa, the curing temperature was 80°C. Twenty four hours was the curing time for specimens containing NaOH or KOH, while 7 days was the curing time for Ca(OH)2 specimens. The obtained results indicate that using NaOH as an alkaline material has the best compressive strength of 45.45 MPa under dry condition, 20.38 MPa under wet condition, and the lowest water absorption of 9.41 %. The composition of the specimens with optimum values consist of 42.37 % kaolinite, 5.93 % NaOH, 42.37 % sand, and 9.32 % water, with sand particles size of (180-355) μm. The specimens of NaOH and sand as a filler showed highest durability under dry cycling condition compared with KOH specimens. While the specimens of KOH and sand as a filler showed highest durability under immersion, and wet cycling condition.
机译：研究了约旦高岭石聚合反应，以确定使用不同的碱性物质（如NaOH，KOH和Ca（OH）2）以及沙子作为填料对压缩强度，在干湿条件下的耐久性以及吸水率的影响。生产的标本。研究的参数是混合比例，例如;碱性物质与高岭石的比例，填料与高岭石的比例，水与高岭石的比例以及填料颗粒尺寸。在模塑样品之前，在NaOH和KOH的情况下，通过将高岭土和填料与碱性溶液混合来进行聚合步骤。对于Ca（OH）2，在添加水之前将高岭土，填料和Ca（OH）2粉末干混在一起。使用不锈钢模具在约15MPa的压力下进行成型步骤，固化温度为80℃。含NaOH或KOH的样品的固化时间为24小时，而Ca（OH）2样品的固化时间为7天。所得结果表明，使用NaOH作为碱性材料，在干燥条件下的最佳抗压强度为45.45 MPa，在潮湿条件下的最佳抗压强度为20.38 MPa，吸水率最低为9.41％。具有最佳值的样品组成包括42.37％的高岭石，5.93％的NaOH，42.37％的沙子和9.32％的水，沙子颗粒大小为（180-355）μm。与KOH试样相比，NaOH和沙子作为填料的试样在干燥循环条件下显示出最高的耐久性。而作为填料的KOH和沙子样品在浸入和湿循环条件下显示出最高的耐久性。

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