WO2020217568A1 - Composition inorganique résistante à la dégradation par rayonnement et fibre associée - Google Patents

Composition inorganique résistante à la dégradation par rayonnement et fibre associée Download PDF

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Publication number
WO2020217568A1
WO2020217568A1 PCT/JP2019/039911 JP2019039911W WO2020217568A1 WO 2020217568 A1 WO2020217568 A1 WO 2020217568A1 JP 2019039911 W JP2019039911 W JP 2019039911W WO 2020217568 A1 WO2020217568 A1 WO 2020217568A1
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Prior art keywords
mass
radiation
inorganic composition
fiber
composition
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PCT/JP2019/039911
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English (en)
Japanese (ja)
Inventor
裕 深澤
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新日本繊維株式会社
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Application filed by 新日本繊維株式会社 filed Critical 新日本繊維株式会社
Priority to PCT/JP2020/017362 priority Critical patent/WO2020218356A1/fr
Priority to EP20793978.6A priority patent/EP3960715A4/fr
Priority to KR1020217038549A priority patent/KR102678500B1/ko
Priority to JP2021516169A priority patent/JP7129679B2/ja
Priority to US17/605,966 priority patent/US20220177350A1/en
Priority to AU2020262012A priority patent/AU2020262012A1/en
Priority to CA3137805A priority patent/CA3137805A1/fr
Priority to CN202080030765.3A priority patent/CN113727950A/zh
Priority to TW109113728A priority patent/TWI844671B/zh
Publication of WO2020217568A1 publication Critical patent/WO2020217568A1/fr
Priority to ZA2021/08158A priority patent/ZA202108158B/en
Priority to JP2022129239A priority patent/JP7368017B2/ja

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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
    • C03C13/00—Fibre or filament compositions
    • C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
    • 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
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a novel inorganic composition having excellent radiation deterioration resistance and its fiber. More specifically, the present invention relates to a radiation-resistant inorganic composition having excellent melt-spinnability and its fiber.
  • Non-Patent Document 1 the types and compositions of basalt are introduced as follows (Table 1).
  • fly ash has been disposed of as waste, but in recent years, as a result of its increasing use as a concrete admixture, the amount of fly ash discarded has been decreasing. However, most of its use depends on the cement sector, and there is concern that if demand for cement stagnates, fly ash, which is disposed of, will start to increase again. For this reason, the development of new uses for fly ash has become an urgent issue.
  • the composition of fly ash varies depending on the raw material coal and the place of origin (power plant, country).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 6-316815
  • Patent Document 1 has 20 to 40% Al 2 O 3 , 35 to 50% SiO 2 , and 15 to 35% Ca O.
  • fly ash fibers characterized by containing 3-12% Fe 2 O 3 and 2-5% Mg O.
  • the content of Fe 2 O 3 also contained in fly ash fiber is 3 to 12%. It is desirable that this content is as low as possible, but ... Also, Fe 2 As the O 3 content increases, the degree of coloring of the fly ash fiber increases, which is not preferable. Therefore, there are many problems with a Fe 2 O 3 content of 12% or more, and it should be avoided.
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2018-531204
  • Patent Document 2 is a mineral fiber containing Al 2 O 3 , SiO 2 , CaO, MgO, and Fe 2 O 3 as components. It discloses a mineral fiber characterized by a Fe 2 O 3 content of 5 to 15%. The document states that "increased iron content tends to color the mineral fibers, which is not particularly desirable for applications where the mineral fibers remain visible" (ibid., Paragraph [0005]). ..
  • Patent Document 1 and Patent Document 2 have in common that Al 2 O 3 , SiO 2 , Ca O, and Fe 2 O 3 are essential components, and the content of Fe 2 O 3 is less than or equal to a predetermined amount (Patent Document). It is stated that it must be limited to 12% or less in 1 and 15% or less in Patent Document 2. In addition, Patent Documents 1 and 2 do not mention any radiation deterioration resistance.
  • the present inventor has worked on the development of a new inorganic material, particularly a radiation-resistant inorganic material having excellent melt-spinning property, for the purpose of improving the radiation-resistant deterioration resistance.
  • the present invention is an inorganic composition containing SiO 2 , Al 2 O 3 , and Fe 2 O 3 as components.
  • the total content of SiO 2 and Al 2 O 3 is 40% by mass or more and 70% by mass or less.
  • the ratio of Al 2 O 3 in the total of SiO 2 and Al 2 O 3 is in the range 0.15 to 0.40
  • the content of Fe 2 O 3 is 16% by mass or more and 25% by mass or less.
  • the CaO content is 5% by mass or more and 30% by mass or less.
  • the total content of SiO 2 and Al 2 O 3 in the composition 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 proportion of Al 2 O 3 in the total of SiO 2 and Al 2 O 3 ([A] / ([A] + [S])) ( mass ratio) 0.15 to zero. It needs to be in the range of 40. Also for this requirement, the composition is inferior in melt spinnability in any case outside the above range, that is, less than 0.15 or more than 0.40.
  • the content of Fe 2 O 3 needs to be 16% by mass or more and 25% by mass or less.
  • the content of Fe 2 O 3 is less than 16% by mass, the radiation deterioration resistance of the composition is inferior.
  • the content exceeds 25% by mass, the melt-spinnability of the composition becomes inferior.
  • 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 temperature of the composition becomes high, which is not preferable from the viewpoint of energy saving.
  • the content is preferably 10% by mass or more.
  • CaO may be abbreviated as C component, and the CaO content may be indicated as [C].
  • the inorganic composition of the present invention is not particularly limited as long as the components SiO 2 , Al 2 O 3 , Fe 2 O 3 and Ca O are blended so as to satisfy the above composition requirements.
  • the composition can be obtained, the raw material cost is significantly increased by using the above-mentioned mineral resources, that is, naturally produced basalt and fly ash, which is a by-product of thermal power generation (waste), as the main raw materials. Can be suppressed to.
  • Both basalt and fly ash are suitable for obtaining the composition of the present invention because they are rich in SiO 2, Al 2 O 3, which are the main components of the inorganic composition of the present invention.
  • composition of the present invention does 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 component ratio in the compounded mixture of each raw material there is no substantial difference between the component ratio in the compounded mixture of each raw material and the component ratio in the composition after melting the mixture. Therefore, the component ratio in the compounded mixture can be used as the composition component ratio.
  • the melt-spun fiber Since the inorganic composition of the present invention is rich in amorphousness, the melt-spun fiber has almost no decrease in strength due to the peeling of the crystalline phase / amorphous phase interface, and a high-strength fiber 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.
  • Amorphousity (%) [Ia / (Ic + Ia)] x 100 (1)
  • Ic is the sum of the integrated values of the scattering intensities of the crystalline peaks when the inorganic composition is subjected to X-ray diffraction analysis
  • Ia is the integrated value of the scattering intensities of the amorphous halo. It is a sum.
  • the degree of amorphousness of the composition of the present invention usually shows a value of 90% or more, although it depends on the composition. When the degree of amorphous is high, it reaches 95% or more, and when it is the highest, the fiber is composed of substantially 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 crystal phase is not observed.
  • the radiation resistance of a material made of the inorganic composition of the present invention can be known by comparing the Vickers hardness of the material before and after irradiation.
  • the radiation deterioration resistance can be evaluated by comparing the tensile strength and the porosity in the composition before and after irradiation.
  • the positron annihilation method can be adopted for measuring the porosity in the composition.
  • the inorganic composition of the present invention contains the sum of SiO 2 and Al 2 O 3 and SiO 2 and Al 2 O. Since the ratio of Al 2 O 3 to the total of 3 and the content of Fe 2 O 3 and the content of Ca O are within a specific range, it is excellent in radiation deterioration resistance and melt spinnability.
  • fly ash and basalt The following fly ash and basalt were used.
  • fly ash 6 types of samples (FA (1) to FA (6)) discharged from domestic thermal power plants were used.
  • Basalt two species (BA (1) and BA (2)) collected in Japan were used. Their compositions are shown in Tables 2 and 3.
  • the component analysis of the raw materials was based on the fluorescent X-ray analysis method.
  • the evaluation of the melt-spinning property of the compound was based on the melt-spinning test using an electric furnace.
  • the outline of the test is shown in FIG.
  • the electric furnace (1) has a height (H) of 60 cm and an outer diameter (D) of 50 cm, and has an opening (4) having a diameter (d) of 10 cm in the center thereof.
  • 30 g of the compound is charged into the Tanman tube (2) having an inner diameter ( ⁇ ) of 2.1 cm and a length of 10 cm.
  • a hole having a diameter of 2 mm is formed in the center of the bottom of the Tanman tube (2).
  • the Tanman tube (2) is held in place in the opening (4) of the electric furnace by a suspension rod (3).
  • the temperature inside the Tanman tube (melt) follows at a temperature approximately 50 degrees lower than the temperature inside the furnace.
  • the melting temperature of the sample is 1300 degrees or less. It was set as a level.
  • the following evaluation ranks were given based on the melting behavior of the sample. ⁇ Evaluation rank> A: It becomes a thread. B: A sample melted and softened from the bottom of the Tanman tube came out, but the viscosity was high and the sample did not fall by its own weight alone and did not become a thread. C: None comes out from the bottom of the Tanman pipe.
  • Example 1 30 parts by mass of FA (1) and 70 parts by mass of BA (1) were blended.
  • the component ratio of this sample is [S] + [A]: 60% by mass, [A] / ([S] + [A]): 0.20, [F]: 16% by mass, [C]: 17 It is by mass% (Table 4).
  • ultrafine fibers mineral fibers having a diameter of 50 ⁇ m or less were obtained within 5 hours after the temperature in the furnace reached 1350 ° C. The obtained fiber had a strength that could not be easily cut even when pulled by hand.
  • the fiber sample was irradiated under the following conditions.
  • the following XRD analysis and Vickers hardness test were carried out on the irradiated fiber sample together with the non-irradiated fiber sample.
  • ⁇ XRD analysis> The XRD spectra of the fiber samples before and after irradiation are shown in FIG. 2 (before irradiation: left figure, after irradiation: right figure, the vertical axis shows the diffraction intensity in an arbitrary unit (arbitrary unit, au)). Since the sample after irradiation may emit radiation, a dome-shaped shield cover with a limited opening was provided on the sample support only in that case. This is the reason why the range of the measurement incident angle of the spectrum data (Fig. 2, right figure) of the sample after irradiation is narrowed.
  • ⁇ Vickers hardness test> A Vickers hardness test was performed on the fiber sample before irradiation and the fiber sample after irradiation.
  • the test equipment used is the Reichert-Jung Microduromat 4000E and the Leica Telatom 3 light microscope. Considering that the width of the fiber sample is about 20 ⁇ m, the force applied to the sample surface was set to 10 gF (0.098N). As a result of measuring 17 points for each of the samples before and after the irradiation, it was 723 ⁇ 24 kgF / mm 2 before the irradiation and 647 ⁇ 19 kgF / mm 2 after the irradiation.
  • the Vickers hardness retention rate after irradiation is 89%, which can be said to be an extremely high value considering that the gamma ray irradiation amount is 5.85 GGy.
  • the composition is extremely excellent in radiation deterioration resistance.
  • Example 2 The sample was prepared according to the raw material mixing ratio shown in Table 4 Example 2.
  • the component ratios of this sample are [S] + [A]: 56% by mass, [A] / ([S] + [A]): 0.25, [F]: 19% by mass, [C]: 13. It is by mass% (Table 4).
  • the sample melted and dropped within 5 hours after the temperature in the furnace reached 1350 ° C., and ultrafine fibers (mineral fibers) having a diameter of 50 ⁇ m or less were obtained.
  • the obtained fiber sample was substantially composed of only an amorphous phase, and could not be easily cut even when pulled by hand. The amorphous property is maintained even by irradiation, and the Vickers hardness retention rate is at the same level as in Example 1.
  • the composition is extremely excellent in radiation deterioration resistance.
  • Example 3 The sample was prepared according to the raw material mixing ratio shown in Table 4 Example 2.
  • the component ratio of this sample is [S] + [A]: 56% by mass, [A] / ([S] + [A]): 0.20, [F]: 18% by mass, [C]: 25. It is by mass% (Table 4).
  • the sample melted and dropped within 5 hours after the temperature in the furnace reached 1350 ° C., and ultrafine fibers (mineral fibers) having a diameter of 50 ⁇ m or less were obtained.
  • the obtained fiber sample was substantially composed of only an amorphous phase, and could not be easily cut even when pulled by hand. The amorphous property is maintained even by irradiation, and the Vickers hardness retention rate is at the same level as in Example 1.
  • the composition is extremely excellent in radiation deterioration resistance.
  • the inorganic composition of the present invention has excellent radiation deterioration resistance, it can withstand long-term use even when used in a radiation-exposed site. Further, since it has excellent melt-spinnability, it becomes a mineral fiber resistant to radiation deterioration.
  • After fiber processing it can be processed into roving, chopped strands, woven fabrics, non-woven fabrics, etc., and used as a covering material or a reinforcing material.
  • woven fabrics can be used as bags for treating radioactive waste and covering materials for parts exposed to radiation
  • rovings and chopped strands can be used as reinforcing materials for FRP (Fiber Reinforced Plastics) and concrete.
  • the reinforcing material made of the inorganic composition is particularly suitable as a reinforcing material for concrete structures for nuclear reactor-related facilities.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Glass Compositions (AREA)

Abstract

Le problème décrit par la présente invention est de fournir une composition inorganique qui présente une excellente résistance à la dégradation par rayonnement et une excellente aptitude au filage par fusion. La solution selon l'invention porte sur une composition inorganique qui contient du SiO2, du Al2O3 et du Fe2O3 en tant que constituants, et (i) en définissant la teneur totale en SiO2 et en Al2O3 à une valeur de 40 à 70 % en masse, (ii) en définissant Al2O3/(SiO2+Al2O3) (rapport massique) à une valeur s'inscrivant dans la plage allant de 0,15 à 0,40, (iii) en définissant la teneur en Fe2O3 à une valeur de 16 à 25 % en masse et (iv) en définissant la teneur en CaO à une valeur de 5 à 30 % en masse dans la composition inorganique, il est possible d'obtenir une composition inorganique qui présente une température de fusion inférieure ou égale à environ 1 300 °C et présente une excellente résistance à la dégradation par rayonnement.
PCT/JP2019/039911 2019-04-25 2019-10-09 Composition inorganique résistante à la dégradation par rayonnement et fibre associée WO2020217568A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
AU2020262012A AU2020262012A1 (en) 2019-04-25 2020-04-22 Radiation-resistant inorganic material and fiber thereof
EP20793978.6A EP3960715A4 (fr) 2019-04-25 2020-04-22 Matériau inorganique résistant aux rayonnements et fibre associée
KR1020217038549A KR102678500B1 (ko) 2019-04-25 2020-04-22 내방사선성 무기 재료 및 그 섬유
JP2021516169A JP7129679B2 (ja) 2019-04-25 2020-04-22 耐放射線性無機材料及びその繊維
US17/605,966 US20220177350A1 (en) 2019-04-25 2020-04-22 Radiation-resistant inorganic material and fiber thereof
PCT/JP2020/017362 WO2020218356A1 (fr) 2019-04-25 2020-04-22 Matériau inorganique résistant aux rayonnements et fibre associée
CA3137805A CA3137805A1 (fr) 2019-04-25 2020-04-22 Materiau inorganique resistant aux rayonnements et fibre associee
CN202080030765.3A CN113727950A (zh) 2019-04-25 2020-04-22 抗辐射性无机材料及其纤维
TW109113728A TWI844671B (zh) 2019-04-25 2020-04-24 抗放射線性無機材料及其纖維
ZA2021/08158A ZA202108158B (en) 2019-04-25 2021-10-22 Radiation-resistant inorganic material and fiber thereof
JP2022129239A JP7368017B2 (ja) 2019-04-25 2022-08-15 耐放射線性無機繊維及びその製造方法

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JP2019-083950 2019-04-25
JP2019083950 2019-04-25

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WO2020217568A1 true WO2020217568A1 (fr) 2020-10-29

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CN (1) CN113727950A (fr)
AU (1) AU2020262012A1 (fr)
CA (1) CA3137805A1 (fr)
TW (1) TWI844671B (fr)
WO (1) WO2020217568A1 (fr)

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AU2020262012A1 (en) 2021-11-04

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