Title:
HIGH DIELECTRIC INSULATING SILICONE RUBBER COMPOSITION AND ELECTRIC FIELD RELAXATION LAYER
Document Type and Number:
WIPO Patent Application WO/2018/193705
Kind Code:
A1
Abstract:
Provided are a high dielectric insulating silicone rubber composition and an electric field relaxation layer. This high dielectric and insulating silicone rubber comprises: (A) 100 parts by mass of an organopolysiloxane represented by formula (1),
R1
nSiO(4-n)/2 (1),
(in the formula, R1 represents the same or different, substituted or unsubstituted monovalent hydrocarbon groups, and n is a positive number of 1.95 to 2.04);
(B) 60 to 150 parts by mass of thermal black having an average primary particle size of 150 to 500 nm;
(C) 5 to 100 parts by mass of reinforcing fumed silica having a specific surface area measured by a BET adsorption method of 50 m2/g or more; and
(D) 0.1 to 10 parts by mass of a curing agent.
The composition is characterized in that a cured product thereof satisfies a dielectric constant of 10 or more, a volume resistivity of 1.0×1013 to 1.0×1017 Ω∙cm, a loss tangent of 0.1 or less, and a dielectric breakdown strength (BDV) of 7 kV/mm or more.
Inventors:
OISHI KAZUHIRO (JP)
Application Number:
PCT/JP2018/005950
Publication Date:
October 25, 2018
Filing Date:
February 20, 2018
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C08L83/04; C08K3/04; C08K3/36; C08K5/14; C08L83/05; H01B3/28; H01B3/46; H02G15/064; H02G15/103; H02G15/184
Foreign References:
| JP2007514055A | 2007-05-31 | |||
| JP2001158856A | 2001-06-12 | |||
| JPH11106657A | 1999-04-20 | |||
| JP2001221225A | 2001-08-17 | |||
| JPH11190328A | 1999-07-13 | |||
| JPH10316859A | 1998-12-02 | |||
| JPS55149348A | 1980-11-20 | |||
| JPH04296359A | 1992-10-20 | |||
| JPH04298568A | 1992-10-22 | |||
| JPH1135830A | 1999-02-09 | |||
| JPH11181286A | 1999-07-06 | |||
| JP2009109745A | 2009-05-21 | |||
| JP2002332408A | 2002-11-22 | |||
| JP2016505693A | 2016-02-25 | |||
| JP2015153514A | 2015-08-24 | |||
| CL2017002218A | 2017-09-01 | |||
| JP2013177558A | 2013-09-09 | |||
| JP2015076168A | 2015-04-20 | |||
| JPH0822716A | 1996-01-23 | |||
| JPH1135830A | 1999-02-09 | |||
| JP2011116955A | 2011-06-16 | |||
| JP2017002218A | 2017-01-05 |
Other References:
See also references of EP 3613808A4
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
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