公开(公告)号：US20160133361A1

公开(公告)日：2016-05-12

申请号：US14890391

申请日：2013-06-24

Applicant: ABB TECHNOLOGY LTD

Inventor： Emmanuel LOGAKIS ,  Alex SKORDOS ,  Panagiota CHATZI

IPC: H01B17/58 ,  B32B9/00 ,  H01B3/18

CPC classification number: H01B17/583 ,  B32B9/007 ,  B32B2250/40 ,  B32B2307/202 ,  C01B32/23 ,  H01B1/04 ,  H01B3/18 ,  Y10T428/30

Abstract: The present invention relates to a material comprising reduced graphene oxide, wherein the degree of reduction of the graphene oxide exhibits a spatial variation so that the material exhibits a gradient in the electric conductivity and/or permittivity. The material can for example be used in an electric device for purposes of field grading and/or dissipation of charges. Examples of electric devices wherein the material is beneficial includes cable accessories, bushings, power cables, microelectronics, switchgear, etc. The invention further relates to a method of producing a material for electrical applications. The method comprises treating different parts of a graphene oxide element differently, so as to achieve a different degree of reduction of the graphene oxide within the element, resulting in a sample having a gradient in the electrical conductivity and/or permittivity. The material could for example be obtained by means of applying a thermal gradient to a graphene oxide element, or by irradiation of a graphene oxide element.

Abstract translation: 本发明涉及一种包含还原石墨烯氧化物的材料，其中氧化石墨烯的还原程度呈现空间变化，使得该材料表现出电导率和/或介电常数的梯度。 该材料可以例如用于电气设备中以用于场分级和/或耗散的耗散。 该材料有益的电气设备的实例包括电缆附件，衬套，电力电缆，微电子学，开关设备等。本发明还涉及一种生产用于电气应用的材料的方法。 该方法包括不同地处理石墨烯氧化物元件的不同部分，以便实现元件内氧化石墨烯的不同程度的降低，导致具有导电性和/或介电常数梯度的样品。 该材料可以例如通过向氧化石墨烯元素施加热梯度，或通过氧化石墨烯氧化物元素的照射来获得。