Title:
METHOD FOR PRODUCING POWER TRANSMISSION CABLE USING NON-HALOGEN FLAME-RETARDANT RESIN COMPOSITION
Document Type and Number:
Japanese Patent JP2021144839
Kind Code:
A
Abstract:
To provide a method for producing a power transmission cable using a non-halogen flame-retardant resin composition which shows good thermal aging characteristics even when steam crosslinking is performed.SOLUTION: Provided is a method for producing a power transmission cable in which a sheath layer is crosslinked by making it contact with steam, where the sheath layer 9 is formed of a non-halogen flame-retardant resin composition comprising a base polymer and a flame retardant, where the flame retardant is one of magnesium hydroxide alone, aluminum hydroxide alone, silica alone, co-use of magnesium hydroxide and aluminum hydroxide, co-use of aluminum hydroxide and silica, and a content thereof is 50 pts.mass or more relative to 100 pts.mass of the base polymer. With such a sheath layer, even when steam crosslinking is performed by a steam pipe 240, magnesium silicate is not generated and lowering of a residual elongation rate after a thermal aging can be suppressed. Further, a power transmission cable can be produced efficiently without using a protective layer for suppressing generation of magnesium silicate.SELECTED DRAWING: Figure 2
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Inventors:
FUJIWARA TOMOYA
NAKABASHI MASANOBU
NAKAMURA YOSHIAKI
NAKABASHI MASANOBU
NAKAMURA YOSHIAKI
Application Number:
JP2020042060A
Publication Date:
September 24, 2021
Filing Date:
March 11, 2020
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
H01B13/24; C08K3/22; C08K3/36; C08L31/04; H01B13/00
Domestic Patent References:
| JP2014011140A | 2014-01-20 | |||
| JP2002042574A | 2002-02-08 | |||
| JP2016100140A | 2016-05-30 | |||
| JP2018092889A | 2018-06-14 | |||
| JP2017004798A | 2017-01-05 | |||
| JP2017027878A | 2017-02-02 | |||
| JP2012087238A | 2012-05-10 | |||
| JP2014053247A | 2014-03-20 |
Attorney, Agent or Firm:
Tsutsui International Patent Office