论文部分内容阅读
柔性石墨是70年代初研制成功的新材料,它对制作垫片、填料提供了一个新的途径。柔性石墨的制作过程如下: 矿石墨(即鳞片状的石墨)浮洗,除去其机械杂质; 酸处理及水洗用硝酸、硫酸、氢氟酸除去其六方晶格中的盐,并用水洗成中性; 干燥及膨胀经水洗成中性的鳞片状石墨,先用预热方法除去其所含水份,再置于1100℃高温下快速焙烧,使晶格中的晶间水迅速逸出,此过程是制造柔性石墨的关键环
Flexible graphite is a new material developed in the early 1970s. It provides a new way to make gaskets and packing materials. Flexible graphite production process is as follows: mineral graphite (ie, flaky graphite) float wash to remove mechanical impurities; acid treatment and washing with nitric acid, sulfuric acid, hydrofluoric acid to remove the hexagonal lattice salt, and washed with water to neutral ; Drying and swelling by scouring into neutral flake graphite, first with pre-heating method to remove the moisture content, and then placed at 1100 ℃ high temperature rapid calcination, so that the crystal lattice in the rapid escape of intergranular water, the process Is the key to create flexible graphite ring