WO2022075169A1 - 耐放射線劣化性無機酸化物フレーク - Google Patents

耐放射線劣化性無機酸化物フレーク Download PDF

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Publication number
WO2022075169A1
WO2022075169A1 PCT/JP2021/036084 JP2021036084W WO2022075169A1 WO 2022075169 A1 WO2022075169 A1 WO 2022075169A1 JP 2021036084 W JP2021036084 W JP 2021036084W WO 2022075169 A1 WO2022075169 A1 WO 2022075169A1
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Prior art keywords
mass
inorganic oxide
flakes
sio
source
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Ceased
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PCT/JP2021/036084
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English (en)
French (fr)
Japanese (ja)
Inventor
裕 深澤
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Nippon Fiber Corp KK
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Nippon Fiber Corp KK
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Publication date
Priority to JP2022555412A priority Critical patent/JP7641026B2/ja
Priority to CN202180067374.3A priority patent/CN116249678A/zh
Priority to KR1020237011270A priority patent/KR102926809B1/ko
Priority to US18/030,448 priority patent/US20230373848A1/en
Priority to CA3193902A priority patent/CA3193902A1/en
Priority to EP21877470.1A priority patent/EP4227277A4/en
Application filed by Nippon Fiber Corp KK filed Critical Nippon Fiber Corp KK
Priority to AU2021355650A priority patent/AU2021355650A1/en
Publication of WO2022075169A1 publication Critical patent/WO2022075169A1/ja
Priority to ZA2023/04051A priority patent/ZA202304051B/en
Anticipated expiration legal-status Critical
Priority to JP2025021296A priority patent/JP2025081427A/ja
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/005—Manufacture of flakes
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/002—Use of waste materials, e.g. slags
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C12/00—Powdered glass; Bead compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/40—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C13/00—Pressure vessels; Containment vessels; Containment in general
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D1/00—Details of nuclear power plant
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/28—Treating solids
    • G21F9/30—Processing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2204/00—Glasses, glazes or enamels with special properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the present invention relates to novel inorganic oxide flakes. More specifically, the present invention relates to inorganic oxide flakes having excellent radiation deterioration resistance.
  • Glass flakes are widely used today as industrial materials. For example, when glass flakes are blended with the thermosetting resin constituting the lining material, the permeation of the corrosive substance into the inside of the lining coating film layer is suppressed, so that the anticorrosion performance of the lining material is remarkably improved. Therefore, glass flakes are indispensable as an auxiliary raw material for heavy anticorrosion lining materials.
  • glass flakes are used as a reinforcing material and a filling material for thermoplastic resins in the same manner as glass fibers. While the glass fiber reinforced resin tends to have anisotropy in the mechanical strength and heat shrinkage of the molded product, the molded product of the glass flake reinforced resin has a small such anisotropy and is excellent in dimensional accuracy.
  • glass flakes are indispensable as an auxiliary raw material for materials for precision equipment.
  • glass flakes with improved chemical durability for example, International Patent Publication WO 2010/024283 A1 (Patent Document 1), Corresponding US Patent Publication US 2011/0151261 A1 (Patent Document 2)
  • visible light absorption performance have been improved.
  • Enhanced glass flakes for example, International Patent Publication WO 2004/076372 A1 (Patent Document 3), Corresponding US Patent Publication US 2006/0048679 A1 (Patent Document 4)), etc. It has been disclosed.
  • the base material of glass flakes is glass, it has a drawback that it deteriorates when exposed to radiation. If the radiation deterioration resistance of glass flakes is improved, it will be possible to use it for equipment, equipment, parts, and parts that are exposed to radiation for a long period of time, such as nuclear power generation equipment and space equipment, and it is expected that the application will be further expanded. Therefore, the present inventor has worked on the development of a new inorganic oxide flake having excellent radiation deterioration resistance in place of the glass flake.
  • the present inventor found that in flakes made of inorganic oxides, the total content of SiO 2 and Al 2 O 3 in the flakes is in a specific range, and Al 2 accounts for the total of SiO 2 and Al 2 O 3 .
  • the ratio of O 3 is in a specific range and the contents of Fe 2 O 3 and Ca O are in a specific range to produce flakes with excellent radiation deterioration resistance, and the present invention has been completed.
  • inorganic oxide flakes in terms of oxide, i) The total of SiO 2 and Al 2 O 3 is 40% by mass or more and 70% by mass or less. ii) The ratio (mass ratio) of Al 2 O 3 to the total of SiO 2 and Al 2 O 3 is in the range of 0.15 to 0.40. iii) Fe 2 O 3 is 16% by mass or more and 25% by mass or less. iv) CaO is characterized in that it is 5% by mass or more and 30% by mass or less. Since the inorganic oxide flakes of the present invention are excellent in radiation deterioration resistance, they are suitable as a reinforcing material or a filler for the material constituting the radiation-exposed portion.
  • the present invention provides a method for producing inorganic oxide flakes having excellent radiation deterioration resistance using industrial waste such as fly ash, copper slag, and steel slag as raw materials.
  • industrial waste such as fly ash, copper slag, and steel slag as raw materials.
  • the above i) to iv) may be abbreviated as "4 requirements of the present invention relating to the composition”.
  • the inorganic oxide flakes of the present invention are obtained by melting a mixture of various inorganic oxides as a raw material and converting the melt into flakes.
  • the component ratio of the raw material compound hereinafter, may be simply abbreviated as the compound
  • the component ratio of the raw material compound can be used as the component ratio of the flakes.
  • raw materials are blended so that the ratios of SiO 2 , Al 2 O 3 , Fe 2 O 3 , and CaO in the flakes are within the above range, and then the blend is melted. can get.
  • the melt of the raw material compound may be simply referred to as a melt.
  • the total content of SiO 2 and Al 2 O 3 in the inorganic oxide flakes of the present invention is 40% by mass or more and 70% by mass or less.
  • SiO 2 may be abbreviated as S component, and the content of SiO 2 may be indicated as [S].
  • Al 2 O 3 may be abbreviated as component A, and the content of Al 2 O 3 may be indicated as [A].
  • the ratio of Al 2 O 3 to the total of SiO 2 and Al 2 O 3 ([A] / ([A] + [S])) (mass ratio) is 0.15 to It needs to be in the range of 0.40. Whether the proportion of Al 2 O 3 in the total of SiO 2 and Al 2 O 3 is less than 0.15 or greater than 0.40, it is difficult to melt the formulation or the melt. It becomes difficult to make flakes.
  • the content of Fe 2 O 3 needs to be 16% by mass or more.
  • the content of Fe 2 O 3 is less than 16% by mass, the radiation resistance of the flakes is inferior.
  • the content of Fe 2 O 3 in the inorganic oxide flakes is preferably 25% by mass or less.
  • Fe 2 O 3 may be abbreviated as F component, and the content of Fe 2 O 3 may be indicated as [F].
  • the CaO content is preferably 5% by mass or more and 30% by mass or less. If the CaO content is less than 5% by mass, the melting start temperature of the compound becomes high, and the energy required for producing the inorganic oxide flakes increases, which is not preferable.
  • the CaO content is preferably 10% by mass or more. On the other hand, if the CaO content is more than 30% by mass, the viscosity of the melt is too low and it becomes difficult to form flakes.
  • CaO may be abbreviated as C component, and the CaO content may be indicated as [C].
  • the inorganic oxide flakes of the present invention there are no restrictions on the raw materials as long as the ratios of SiO 2 , Al 2 O 3 , Fe 2 O 3 and Ca O fall within the above range. Therefore, a single compound of SiO 2 , Al 2 O 3 , Fe 2 O 3 , and Ca O may be prepared as a starting material, but a silica source rich in SiO 2 content and an alumina source rich in Al 2 O 3 content may be prepared. , Fe 2 O 3 It is preferable from the viewpoint of cost to use a mixture of an iron oxide source rich in Fe 2 O 3 content and a calcium oxide source rich in Ca O content as a starting material.
  • silica source examples include, but are not limited to, amorphous silica, silica sand, fumed silica, and volcanic ash.
  • Alumina sources include, but are not limited to, alumina, mullite and other ores.
  • silica-alumina source rich in both silica and alumina examples include, but are not limited to, kaolinite, montmorillonite, feldspar, and zeolite.
  • iron oxide source examples include, but are not limited to, iron oxide, iron hydroxide, and iron ore.
  • calcium oxide sources include, but are not limited to, calcite, dolomite and other ores.
  • thermal power generation waste and metal refining waste can also be effectively used as one of the silica source, alumina source, iron oxide source, or calcium oxide source.
  • Fly ash and clinker ash can be used as the above-mentioned thermal power generation waste. Fly ash and clinker ash are suitable as silica-alumina sources because they are rich in SiO 2 and Al 2 O 3 . However, since fly ash and clinker ash have a low Fe 2 O 3 content, it is difficult to obtain the inorganic oxide flakes of the present invention by themselves. However, the inorganic oxide flakes of the present invention can be obtained at low cost by additionally blending an appropriate amount of iron oxide source.
  • Coal gasification slag (CGS) produced as waste from integrated coal gasification combined cycle (IGCC) has almost the same chemical composition as fly ash, so silica alumina Can be a source. Since the coal gasified slag is in the form of granules, it has an advantage of excellent handleability.
  • Examples of the metal refining waste mentioned above include steel slag and copper slag.
  • Steel slag has a high CaO content and can be used as a source of calcium oxide.
  • Steel slag includes blast furnace slag, converter slag, and reduction slag.
  • Copper slag has a high Fe 2 O 3 content and can be used as a source of iron oxide.
  • fly ash, clinker ash, or coal gasified slag can be appropriately used as the silica alumina source
  • copper slag can be used as the iron oxide source
  • steel slag can be used as the calcium oxide source.
  • most of the silica alumina source, the iron oxide source, and the calcium oxide source can be covered by industrial waste such as thermal power generation waste and metal refining waste.
  • volcanic rocks such as basalt and andesite can also be used as silica-alumina sources.
  • the inorganic oxide flakes of the present invention do not exclude the inclusion of unavoidable impurities contained in the raw material.
  • impurities include MgO, Na 2 O, K 2 O, TiO 2 , and CrO 2 .
  • the inorganic oxide flakes of the present invention are rich in amorphousness, there is almost no decrease in strength due to peeling of the crystalline phase / amorphous phase interface, and high-strength inorganic oxide flakes can be obtained.
  • the degree of amorphousness which is a measure of amorphousness, is calculated by the following mathematical formula (1) by the X-ray diffraction (XRD) spectrum.
  • Degree of amorphous (%) [Ia / (Ic + Ia)] ⁇ 100 (1)
  • Ic is the sum of the integrated values of the scattering intensities of the crystalline peaks when the inorganic material is subjected to X-ray diffraction analysis
  • Ia is the sum of the integrated values of the scattering intensities of the amorphous halo. Is.
  • the degree of amorphousness of the inorganic oxide flakes of the present invention usually shows a value of 90% or more, although it depends on the composition. When the degree of amorphousness is high, it reaches 95% or more, and when it is the highest, the flakes are substantially composed of only an amorphous phase.
  • the fact that the X-ray diffraction spectrum is substantially composed of only the amorphous phase means that only the amorphous halo is observed and the peak of the crystalline phase is not observed.
  • the radiation deterioration resistance of the inorganic oxide flakes of the present invention can be known by comparing the Vickers hardness of the inorganic oxide flakes before and after irradiation.
  • inorganic oxide flakes having excellent radiation deterioration resistance are created.
  • test examples Examples and Comparative Examples
  • the following are used as the silica source, the alumina source, the silica alumina source, the iron oxide source, and the calcium oxide source.
  • each of the silica source, the alumina source, the iron oxide source, and the calcium oxide source is finely pulverized and mixed so that SiO 2 , Al 2 O 3 , Fe 2 O 3 , and CaO are in a predetermined ratio. , For testing.
  • Step 1 Approximately 60 grams of the inorganic oxide compound (fp) used as a raw material for flakes is charged into a crucible (1) having a diameter (D1) of 20 mm. Separately, a Tanman tube (2) having a diameter (D2) of 10 mm is prepared. The Tanman tube (2) has an opening (21) having a diameter ( ⁇ ) of 2 mm at the bottom (upper part of FIG. 1).
  • Step 2 The crucible (1) charged with the compound (fp) is heated in an electric furnace (3) (Fig. 1, middle left).
  • the electric furnace is heated by a predetermined heating program.
  • the maximum temperature reached in the furnace is set to 1350 ° C. It has been confirmed in advance that the temperature inside the crucible (1) and the temperature of the melt (fm) follows at a temperature approximately 50 ° C. lower than the temperature inside the furnace.
  • Step 3 Immediately remove the crucible (1) after the temperature rise from the electric furnace (3), and push down the Tanman pipe (2) from the upper part of the crucible (1).
  • the inorganic oxide melt (fm) in the crucible (1) enters the inside of the Tanman pipe (2) through the opening (21) (Fig. 1, middle right).
  • Step 4 Next, air is blown from the mouth portion (22) of the Tanman pipe (2) storing the melt (fm) at a pressure of about 10 MPa (Fig. 1, lower left).
  • the melt (fm) has a moderate viscosity
  • the melt swells and forms a hollow thin film balloon (fb) (Fig. 1, lower right).
  • the balloon is crushed to obtain flakes.
  • the flake workability is ranked as A, B, and C below.
  • A A balloon is formed from step 1 through step 4.
  • B Although steps 1 to 3 are reached, the balloon is not formed in step 4 because the viscosity of the melt is low.
  • C Melting of the compound (fp) does not start even in step 2, or the viscosity of the melt is high, so that the melt enters the inside of the Tanman tube (2) from the opening (21) in step 3. It doesn't come.
  • the obtained molten solidified sample was subjected to an irradiation test using cobalt-60 as a radiation source under the condition of a gamma ray irradiation amount of 50 kGy, the microvickers hardness before and after irradiation was measured, and the intensity retention rate of the sample after irradiation was determined. I asked. The results are shown in Table 1. This result strongly indicates that when the iron oxide (Fe 2 O 3 ) content in the sample is 15% or more, the intensity retention rate after irradiation is remarkably increased.
  • Example 1 An appropriate amount of SiO 2 (reagent), Al 2 O 3 (reagent), Fe 2 O 3 (reagent), and CaO (reagent) was mixed with fly ash RM1.
  • the contents of SiO 2 , Al 2 O 3 , Fe 2 O 3 , and Ca O in the formulation are [S] + [A]: 42% by mass, [A] / ([S]) in terms of oxides. + [A]): 0.20, [F]: 19% by mass, [C]: 17% by mass.
  • a balloon having a film thickness of about 800 nm was obtained. The balloon was crushed to obtain flakes.
  • Examples 2 to 8 By changing the blending amount of SiO 2 (reagent), Al 2 O 3 (reagent), Fe 2 O 3 (reagent), CaO (reagent), the total of SiO 2 and Al 2 O 3 (mass) in terms of oxide. %), Ratio of Al 2 O 3 to the total of SiO 2 and Al 2 O 3 (mass ratio), Fe 2 O 3 amount (mass%), Ca O amount (mass%) Then, the same flake formation test as in Example 1 was performed (Table 2). As a result, for each of the formulations, the melt formed a hollow thin film balloon similar to that of Example 1, and showed good flake workability.
  • Example 9 an example of producing inorganic oxide flakes having excellent radiation deterioration resistance using fly ash, which is an industrial waste, copper slag, and steel slag as raw materials is shown.
  • fly ash RM1 as a silica alumina source
  • copper slag RM2 as an iron oxide source
  • steel slag RM3 as a calcium oxide source were blended.
  • the contents of SiO 2 , Al 2 O 3 , Fe 2 O 3 , and Ca O in the formulation are [S] + [A]: 59% by mass, [A] / ([S]) in terms of oxides.
  • the inorganic oxide flakes of the present invention are suitable as reinforcing materials or fillers for resins and rubbers.
  • the resin include thermoplastic resins and thermosetting resins.
  • the thermoplastic resin include, but are not limited to, polypropylene, ABS resin, AS resin, polyphenylene ether, polyamide, polyamideimide, and polyketone.
  • rubber include thermoplastic rubber.
  • the inorganic oxide flakes of the present invention can be suitably used as an auxiliary raw material for improving the corrosion resistance of lining materials and paints.
  • the base material of the lining material and the paint include, but are not limited to, thermosetting resins such as vinyl ester resin and epoxy resin, and curable rubber.
  • the above-mentioned resin, rubber, or coating material containing the inorganic oxide flakes of the present invention is excellent in radiation deterioration resistance. Therefore, it is suitable as a material constituting the radiation-exposed portion.
  • the radiation-exposed part equipment / equipment / members in each field of nuclear power, aerospace, and medical treatment can be exemplified.
  • More specific examples of the above-mentioned facilities, equipment, and components for nuclear power generation include a reactor building (including a research reactor and a test reactor), a reactor containment vessel, a pipe in a reactor facility, and a decommissioning robot. Will be.
  • a reactor building including a research reactor and a test reactor
  • a reactor containment vessel including a pipe in a reactor facility
  • a decommissioning robot Will be.
  • equipment / equipment / materials in the aerospace field ⁇ Space station buildings, space stations, artificial satellites, planetary exploration satellites, space suits, etc.
  • equipment / equipment / materials in the medical field ⁇ Medical devices that use particle beams can be mentioned.
  • the above usage examples are exemplified for the purpose of demonstrating the usefulness of the inorganic oxide flakes of the present invention, and do not limit the scope of the present invention.

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  • Chemical & Material Sciences (AREA)
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  • Plasma & Fusion (AREA)
  • Glass Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
PCT/JP2021/036084 2020-10-06 2021-09-30 耐放射線劣化性無機酸化物フレーク Ceased WO2022075169A1 (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CN202180067374.3A CN116249678A (zh) 2020-10-06 2021-09-30 抗辐射降解性无机氧化物薄片
KR1020237011270A KR102926809B1 (ko) 2020-10-06 2021-09-30 내방사선 열화성 무기 산화물 플레이크
US18/030,448 US20230373848A1 (en) 2020-10-06 2021-09-30 Radiation resistant inorganic oxide flakes
CA3193902A CA3193902A1 (en) 2020-10-06 2021-09-30 Radiation resistant inorganic oxide flakes
EP21877470.1A EP4227277A4 (en) 2020-10-06 2021-09-30 INORGANIC OXIDE PLATES THAT ARE RESISTANT TO RADIATION DEGRADATION
JP2022555412A JP7641026B2 (ja) 2020-10-06 2021-09-30 耐放射線劣化性無機酸化物フレーク
AU2021355650A AU2021355650A1 (en) 2020-10-06 2021-09-30 Inorganic oxide flakes resistant to degradation by radiation
ZA2023/04051A ZA202304051B (en) 2020-10-06 2023-03-31 Radiation resistant inorganic oxide flakes
JP2025021296A JP2025081427A (ja) 2020-10-06 2025-02-13 耐放射線劣化性無機酸化物フレーク

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JP2020-169452 2020-10-06
JP2020169452 2020-10-06

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