推荐回答(5个)
胶体石墨是石墨的纳米材料,粒径在1纳米到100纳米之间的称为胶体石墨。
胶体石墨的价格主要根据粒度和碳量来制定,根据碳量石墨分为高纯、高碳、中碳、低碳四档,每个档次之间的价格相差很大,不过既然加工成胶体石墨了,那么碳量应该至少是高碳以上的,如果没有办法知道碳量的话那只能大体估计价格在4-6万/吨左右,如果是高纯石墨(碳量99.9%-99.99%以上)那价格至少是10万/吨
小于的石墨颗粒均匀地分散于水、油及其他有机溶剂中,构成黑色黏稠的悬浮液体。亦称胶态石墨或石墨乳。
胶体石墨是19世纪艾奇逊首次获得的。原料为天然石墨或人造石墨。
胶体石墨制造方法有两种:(1)机械法。天然石墨粉碎后经盐酸和氢氟酸处理除去杂质。加入到鞣酸水溶液中,经多次倾析成膏质。加入一定比例的水和氨,再经超声波处理进一步减小颗粒尺寸,即可得到胶体石墨。(2)化学法。天然石墨纯化并粉碎后,在90℃加入浓硝酸和浓硫酸及水处理,再经清洗,干燥,加入水、乙醇、丙酮等分散剂即得胶体石墨。加入稳定剂如油酸钠、硫酸盐等使石墨颗粒不凝聚。氨使石墨胶体过渡到胶溶体,并调节pH值。
通常胶体石墨颗粒含量为整个胶体的3%~25%,石墨含量高,胶体黏度大,成膏状。
胶体石墨的性能及应用:(1)润滑性。胶体石墨具有良好的润滑性能,因此广泛地用于铸造,玻璃成型等的脱模剂,及高温下螺栓,高速旋转机件,内燃机引擎的润滑,难熔金属钨、钼等拉丝模的润滑剂。(2)隔热性。胶体石墨膜面的垂直方向具有隔热作用。因此可用作高温隔热膜在过热蒸汽汽缸和透平螺旋桨方面得到应用。(3)成膜均匀,且具有优良的导电性和导热性。在电子工业中得到应用,作消除静电,抑制电子二次反射,防止反光,增加辐射冷却之用。(4)其他。因胶体石墨高度分散,橡塑工业中做添加剂,提高制品的耐磨,抗压及导电性,电解工业中配制导电液等。
胶体石墨:00号、0号、1号、1# 、2#、3#、4#、各种规格胶体石墨。用于汽车密封件专、蓄电池专用、铅酸蓄电池阳极板专用、金属铅和硫酸铅专用、炸药专用胶体石墨、密封专用、润滑脂专用、石墨盘根、试剂专用、聚四氟乙稀专用石墨。
颜色 黑 鳞片尺寸 38-1(mm) 固定碳含量≥ 90-99.9(%) 水分含量≤ 0.5(%) 胶体石墨粉又称超细微粉,是用优质的天然鳞片石墨为原料,经特殊的加工工艺和精密的超微粉碎而成。胶体粒子的大小,在理论上为0.1—0.01微米之间,而实际上一般胶体石墨制品中石墨粒子的大小,多在1微米至数微米之间。 性能:具有优质天然鳞片的性能,在高温条件下具有特殊的抗氧化性,自润滑性和可塑性同时具有良好的导电性和附着性。 用途: 1、用作化肥工业催化剂中的脱模润滑剂。 2、粉末冶金脱模剂及金属合金原料。 3、用于制造碳膜电阻、导电的干膜以及配制导电液。 4、用做橡胶、塑料及各种复合材料的填充剂或性能改进剂以提高材料的耐磨、抗压或传导性能。 5、用于各种石墨乳及石墨涂料、油漆的特种制作。 6、用做各种耐高温、耐腐蚀、润滑油、润滑脂等基料
胶体石墨我们公司采购价根据质量8000~12000 元/吨
胶体石墨粉剂有很多型号,含碳量和粒径不同,价格也不同
胶体石墨?是做什么用的还真是没有了解,留个爪印顺便顶贴。鳞片石墨膨胀石墨倒是听说过。
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