INSULATING RESIN COMPOSITION FOR DIRECT-CURRENT POWER CABLE, CROSSLINKED RESIN, DIRECT-CURRENT POWER CABLE, MEMBER FOR FORMING INSULATING REINFORCEMENT LAYER OF DIRECT-CURRENT POWER CABLE JUNCTION, AND DIRECT-CURRENT POWER CABLE JUNCTION

Title:

Document Type and Number:

WIPO Patent Application WO/2018/030160

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide an insulating resin composition for direct-current power cables which has excellent extrudability, is less apt to sag, has satisfactory scorch resistance, and has excellent extrusion stability and which can give insulating layers that generate little water by secondary decomposition and stably exhibit satisfactory direct-current electrical properties. The insulating resin composition for direct-current power cables of the present invention comprises: (A) low density polyethylene which has a complex viscosity η*100, as measured at 130°C and a frequency of 100 rad/s, of 600-1,300 Pa∙s and in which the ratio of the complex viscosity η*0.1, as measured at 130°C and a frequency of 0.1 rad/s, to the complex viscosity η*100, η*0.1/η*100, is 4 or higher; (B) a modified polyethylene; and (C) a stabilizer comprising a mixture of a hindered-phenol antioxidant and a thioether antioxidant. The resin composition contains carbonyl groups introduced thereinto by the component (B), in an amount of 7×10-6 to 1.3×10-5 mol/g with respect to the total mass of the components (A), (B), and (C).

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Inventors:

MOHRI HIRONORI (JP)
YUZAWA NOBUTAKA (JP)
TACHIKAWA TAKESHI (JP)
MORI ANNA (JP)
MORI HIROKI (JP)
SHIGEMORI NAOTO (JP)
KIKUCHI SAKI (JP)

Application Number:

PCT/JP2017/027132

Publication Date:

February 15, 2018

Filing Date:

July 26, 2017

Export Citation:

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Assignee:

NUC CORP (JP)
FURUKAWA ELECTRIC CO LTD (JP)

International Classes:

C08L23/06; C08K5/13; C08K5/14; C08K5/372; C08L51/06; H01B9/00

Foreign References:

CN104327367A	2015-02-04
CN103172918A	2013-06-26
CN103589044A	2014-02-19
CN104744782A	2015-07-01
JP2009084524A	2009-04-23
JP2009286903A	2009-12-10
JP2000129064A	2000-05-09
JPH08311252A	1996-11-26
JP2011016907A	2011-01-27
JP2014074096A	2014-04-24
JPH087653A	1996-01-12

Other References: