公开(公告)号：US20230147908A1

公开(公告)日：2023-05-11

申请号：US17912829

申请日：2021-03-23

Applicant: DOW SILICONES CORPORATION

Inventor： Robert A. DRAKE ,  Beatriz C. MA ,  Hans Peter WOLF ,  Elizabeth M. SANTOS

IPC: C08G77/20 ,  C08G77/12 ,  C08G77/08 ,  C08K9/06 ,  C08J3/20 ,  H01B3/46

CPC classification number: C08G77/20 ,  C08G77/12 ,  C08G77/08 ,  C08K9/06 ,  C08J3/203 ,  H01B3/46 ,  C08K2201/001 ,  C08J2383/07 ,  C08J2383/05

Abstract: A curable silicone elastomer composition is disclosed. The composition comprises one or more non-fluorinated polydiorganosiloxane polymers and silica filler. The silica filler is at least partially treated with a fluorinated hydrophobing treating agent. Also provided is a method of making the composition and its use in the manufacture of insulators for high voltage applications, especially high voltage direct current (HVDC) applications and accessories such as cable joints, cable terminal applications, and connectors. The fluorinated hydrophobing treating agents are selected from one or more silanol terminated fluorinated siloxane oligomer(s) having from 2 to 20 siloxane units, and/or one or more fluorinated silane diol(s), and/or one or more fluorinated trialkoxy silane(s), and/or one or more fluorinated silazane(s), or a mixture thereof.