无硫膨胀石墨的制备及性能表征

发布时间：2018-01-31 11:44

  本文关键词： 无硫 膨胀石墨 制备 表征　出处：《硅酸盐通报》2017年03期 　论文类型：期刊论文

【摘要】：针对传统方法制得的膨胀石墨含硫量高和膨胀容积不稳定的问题,以0.28mm的鳞片石墨为原料,KMnO_4为氧化剂,HClO_4和H_3PO_4为插层剂,经微波炉和马弗炉两种膨胀方式对可膨胀石墨的膨胀容积进行测试,采用正交实验法确定了最佳工艺条件。结果表明:在石墨(g)∶混酸(mL)∶高锰酸钾(g)=1∶4.5mL(3.6mL高氯酸∶0.9mL磷酸)∶0.3,反应温度30℃,反应时间60min,抽滤洗涤至pH值为5~7,80℃干燥,于微波炉中高温膨胀,膨胀容积最大,可达350mL/g。
[Abstract]:The expansion volume of expandable graphite was measured by orthogonal design method . The results showed that the optimum technological conditions were determined by orthogonal experiment . The results showed that the best technological conditions were determined by orthogonal experiment . The results showed that the best technological conditions were determined by orthogonal experiment . The results showed that the best technological conditions were determined by orthogonal experiment . The results showed that the best conditions were as follows : ( g ) : mixed acid ( mL ) : potassium permanganate ( g ) = 1 : 4.5 mL ( 3.6 mL of high chlorhydric acid : 0.9 mL phosphoric acid ) : 0.3 , reaction temperature 30 鈩，

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