ELECTRICAL STRESS CONTROL ARTICLE

摘要

A SHEET-LIKE ELECTRICAL STRESS CONTROL ARTICLE COMPRISING (A) AT LEAST ONE VOID-FILLING LAYER OF ELASTOMERIC VOID-FILLING MATERIAL HAVING SOME ELECTRICAL STRESS CONTROL FUNCTIONALLY (PREFERABLY CONTAINING 20 TO 70BY WEIGHT OF ELECTRICALLY CONDUCTIVE OR SEMI-CONDUCTIVE FILLERS) AND (B) AT LEAST ONE SUPPORT LAYER OF ELASTOMERIC MATERIAL SELECTED AND/OR FORMULATED (PREFERABLY WITH 45 TO 65BY WEIGHT FILLERS) TO REQUIRE INCREASING APPLIED STRESS TO PRODUCE THEREIN A GIVEN UNIT OF STRAIN AS IT APPROACHES ITS BREAK POINT, WHEREIN THE THICKNESS AND COMPOSITION OF THE RESPECTIVE LAYERS ARE SELECTED SO THAT THE ARTICLE IS STRETCHABLE DURING APPLICATION THEREOF TO PARTS OF A CABLE AND THE INCREASING STRESS REQUIRED TO STRETCH THE SUPPORT LAYER RESISTS OVER-ELONGATION OF THE VOID- FILLING LAYER.