Graphite Nanoplatelets and Compositions
    2.
    发明申请
    Graphite Nanoplatelets and Compositions 审中-公开
    石墨纳米片和组合物

    公开(公告)号:US20150210551A1

    公开(公告)日:2015-07-30

    申请号:US14681374

    申请日:2015-04-08

    Applicant: BASF SE

    Abstract: Disclosed are graphite nanoplatelets produced by a process which comprises thermal plasma expansion of intercalated graphite to produce expanded graphite followed by exfoliation of the expanded graphite, where the exfoliation step is selected from ultrasonication, wet milling and controlled caviation and where greater than 95% of the graphite nanoplatelets have a thickness of from about 0.34 nm to about 50 nm and a length and width of from about 500 nm to about 50 microns. The intercalated graphite is intercalated for example with a mixture of sulfuric and nitric acids. The plasma reactor for example employs an RF induction plasma torch. All three exfoliation methods are performed in an organic solvent or water. The exfoliation steps may be performed with the aid of for example a nonionic surfactant. Also disclosed are plastic, ink, coating, lubricant or grease compositions comprising the graphite nanoplatelets.

    Abstract translation: 公开了通过包括插入石墨的热等离子体膨胀以产生膨胀石墨然后剥离膨胀石墨的方法制备的石墨纳米片,其中剥离步骤选自超声波,湿法研磨和可控制的空化,并且其中大于95% 石墨纳米片具有约0.34nm至约50nm的厚度和约500nm至约50微米的长度和宽度。 插入的石墨例如用硫酸和硝酸的混合物插入。 等离子体反应器例如采用RF感应等离子体焰炬。 所有三种剥离方法均在有机溶剂或水中进行。 剥离步骤可以借助于例如非离子表面活性剂进行。 还公开了包含石墨纳米片的塑料,油墨,涂料,润滑剂或润滑脂组合物。

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