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Title:
MICROCAPSULE FOR LATENT HEAT STORAGE MATERIALS, METHOD FOR PRODUCING SAME, POWDER CONTAINING MICROCAPSULES FOR LATENT HEAT STORAGE MATERIALS, AND HEAT STORAGE DEVICE COMPRISING SAID POWDER
Document Type and Number:
WIPO Patent Application WO/2021/039599
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a latent heat storage material which has a melting point of about 300°C to about 550°C, while being not susceptible to leakage of a phase change material; and applications of this latent heat storage material. The present invention provides a microcapsule for latent heat storage materials, said microcapsule having a metal core containing Zn and Al and a shell that covers the metal core.　The shell of the microcapsule comprises: an oxide film containing Zn and O; and another oxide film that is adjacent to the inner side of the oxide film, while containing Al and O. With respect to this microcapsule, the mass ratio of ZnAl2O4 is 4% or less. The mass ratio is obtained by means of quantitative analysis of the result of an analysis with use of an X-ray diffraction (XRD) apparatus, said quantitative analysis using a reference intensity ratio (RIR) method.

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Inventors:
NOMURA TAKAHIRO (JP)
KAWAGUCHI TAKAHIRO (JP)
SAKAI HIROKI (JP)
CHO SHUNSUKE (JP)
KASHIYAMA KOHEI (JP)
SATO KENJI (JP)
MIYA KAZUYUKI (JP)
SHIBUYA YOSHITAKA (JP)
Application Number:
PCT/JP2020/031517
Publication Date:
March 04, 2021
Filing Date:
August 20, 2020
Export Citation:
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Assignee:
JX NIPPON MINING & METALS CORP (JP)
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
C09K5/06; F28D20/02
Domestic Patent References:
WO2015162929A12015-10-29
WO2017200021A12017-11-23
WO2012130286A12012-10-04
WO2015162929A12015-10-29
WO2017200021A12017-11-23
Foreign References:
JP2012111825A2012-06-14
JPH01113486A1989-05-02
JPS5426014B21979-09-01
CN102746831A2012-10-24
US4657067A1987-04-14
Other References:
E. RISUE ET AL.: "Zinc-rich eutectic alloys for high energy density latent heat storage applications", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 705, 2017, pages 714 - 721
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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