WO2003050822A2 - Materiau de blindage neutronique et de maintien de la sous-criticite a base de resine vinylester - Google Patents
Materiau de blindage neutronique et de maintien de la sous-criticite a base de resine vinylester Download PDFInfo
- Publication number
- WO2003050822A2 WO2003050822A2 PCT/FR2002/004255 FR0204255W WO03050822A2 WO 2003050822 A2 WO2003050822 A2 WO 2003050822A2 FR 0204255 W FR0204255 W FR 0204255W WO 03050822 A2 WO03050822 A2 WO 03050822A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- material according
- resin
- boron
- inorganic
- resins
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- G21F1/10—Organic substances; Dispersions in organic carriers
-
- 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
- G21F1/10—Organic substances; Dispersions in organic carriers
- G21F1/103—Dispersions in organic carriers
Definitions
- the present invention relates to a neutron shielding material and for maintaining the subcriticality.
- a neutron shielding material are useful in nuclear energy to protect operators from neutron radiation emitted by radioactive products and to prevent the runaway reaction of the neutron formation chain, more particularly when these products contain fissile materials. They can be used in particular as a neutron screen in transport and / or storage packaging for radioactive products, for example nuclear fuel assemblies.
- thermosetting resin can be an unsaturated polyester resin and the inorganic fillers can be heavy metals or compounds thereof.
- GB-A-1 049 890 [2] describes molded articles or neutron absorbing coatings comprising at least 0.3% by weight of boron obtained from a copolymerizable mixture of an unsaturated polyester and a an unsaturated monomer in which either the acid component of the polyester is derived in part from boric acid, or the polymerizable monomer is in part an ester of boric acid.
- Document JP-A-55 119099 [3] describes materials for protection against neutrons also based on unsaturated polyester resin. Such a material has a density of hydrogen atoms of 6.1 ⁇ 10 22 hydrogen atoms per cm 3 , but it does not contain a neutron absorber. Also, it does not ensure the maintenance of the subcriticality of a nuclear fuel transport packaging.
- the present invention specifically relates to a neutron shielding material and for maintaining the subcriticality which has a better corrosion resistance than that of materials based on unsaturated polyester.
- the composite material for neutron shielding and for maintaining the subcriticality comprises a matrix based on vinylester resin and an inorganic filler capable of slowing down and absorbing the neutrons.
- the vinylester resin can be of different types.
- resins obtained by adding a carboxylic acid to an epoxy resin are used.
- the epoxy resins used have a macromolecular pattern of two possible types:
- the carboxylic acid can in particular be acrylic acid or methacrylic acid. Preferably, methacrylic acid is used.
- the vinylester resin is preferably chosen from the group consisting of epoxyacrylate resins, epoxymethacrylate resins, bisphenol A type resins, novolak type resins and halogenated bisphenol A based resins.
- Bisphenol A type epoxyacrylate and epoxymethacrylate resins can correspond to the formula:
- R represents H or CH 3 .
- Novolak type vinyl ester resins can meet the formula:
- non-epoxy vinyl ester resins obtained from isophthalic polyester and urethane, corresponding for example to the formula:
- R is as defined above and U represents a urethane group.
- the composite material of the invention has the following advantages.
- the material is easy to produce because the vinyl ester resin can be poured directly into the mold which will constitute the transport or storage packaging for radioactive products.
- the mass loss of the shielding materials produced with these vinyl ester resins is low at high temperature.
- the vinyl ester resins were transformed into a thermoset material by reaction with a copolymerizable monomer such as styrene and styrene derivatives such as methylstyrene and divinylbenzene, vinyltoluene, methyl methacrylate and the derivatives allylics like diallyl phthalate.
- the material also comprises an inorganic filler capable of slowing down and absorbing neutrons, for example metals, metal compounds, boron, boron compounds.
- this inorganic filler can in particular comprise at least one inorganic boron compound and at least one hydrogenated inorganic compound.
- the boron compounds which can be used belong to the group comprising boric acid H 3 B0 3 , colemanite Ca 2 O ⁇ B 6 H ⁇ 0 , zinc borates Zn 2 O ⁇ 4 , 5 H 7 B 6 , Zn 4 0 8 B 2 H 2 and Zn 2 0nB 6 , boron carbide B 4 C, boron nitride BN and boron oxide B 2 0 3 .
- the composite material of the invention comprises at least one boron compound chosen from zinc borate Zn 2 0 14 ⁇ 5H 7 B6 and boron carbide B 4 C.
- the hydrogenated inorganic compounds which can be used preferably belong to the group of alumina hydrates and magnesium hydroxide.
- the material of the invention can also comprise poly (vinyl acetate) to give the material an anti-shrinkage character.
- This material can also further comprise a hydrogenated organic filler such as melamine, to improve its self-extinguishing properties.
- a hydrogenated organic filler such as melamine
- the inorganic boron compound and the hydrogenated inorganic compound are preferably chosen and their quantities so as to obtain a boron concentration of the material from 8.10 20 to 15.10 21 boron atoms per cm 3 and a hydrogen concentration of 4.10 22 to 6.10 22 atoms per cm 3 .
- the quantities of the various constituents are also chosen in order to obtain characteristics of density, self-extinguishing and thermal conductivity suitable for use in a packaging for transport and / or storage of materials. radioactive.
- this self-extinguishing property is conferred in particular by the presence of hydrogenated and / or boron inorganic compounds, for example alumina hydrate or zinc borate.
- the material should have a low thermal conductivity but sufficient to dissipate the heat from the transported elements such as irradiated fuel elements.
- this material is obtained by casting a mixture of the various constituents and a vinyl diluent, it is important that the amounts of the various constituents are such that the mixture has the property of be able to be cast. Generally, the viscosity of the mixture should not exceed 300 Poises.
- thermosetting vinyl ester resin that is to say including the vinyl diluent, for example styrene.
- the material has a density equal to or greater than 1.6, for example from 1.65 to 1.9.
- the materials of the invention can withstand a minimum use temperature of 160 ° C.
- the material of the invention can be prepared by curing a mixture of the constituents in the vinyl ester resin in solution in a vinyl diluent.
- the subject of the invention is also a process for preparing the composite material described above, which comprises the following steps:
- the vinyl diluent can be, for example, styrene, vinyltoluene, divinylbenzene, methylstyrene, methyl acrylate, methyl methacrylate or an allylic derivative such as diallyl phthalate.
- styrene is used which makes it possible both to dissolve the vinyl ester resin and to ensure its hardening by copolymerization.
- the curing catalysts and accelerators used are chosen from the compounds usually used for curing vinyl ester resins.
- the catalysts can in particular be organic peroxides, for example: - peroxides derived from ketones such as methyl ethyl ketone peroxide, acetylacetone peroxide, methyl isobutyl ketone peroxide, cyclohexanone peroxide and cumene hydroperoxide;
- diacyl peroxides for example benzoyl peroxide optionally in combination with aromatic tertiary amines such as dimethylaniline, diethylaniline and dimethylparatoluidine; and
- dialkyl peroxides such as dicumyl peroxide and ditertiobutyl peroxide.
- the most commonly used accelerators are divalent cobalt salts such as cobalt naphthenate or octoate, and aromatic tertiary amines such as dimethylaniline, dimethylparatoluidine and diethylaniline.
- additives such as crosslinking inhibitors, surfactants and anti-shrinkage agents.
- the procedure is as follows:
- the vinyl ester resin prepolymer + vinyl diluent
- the percentage of charges can range from 60 to 75%. These charges can also play a fire-fighting role.
- the whole is kneaded so as to obtain a mixture perfectly homogeneous.
- the catalyst is added last.
- the homogeneous mixture is then degassed under vacuum (less than 0.01 MPa).
- the viscosity of the mixture must not exceed 300 Poises (the mixture must be pourable).
- the mixture After degassing, the mixture is poured into the desired mold where it is crosslinked to form an insoluble thermosetting material.
- the reaction mechanism is radical, and the reaction is strongly exothermic.
- the hardening time can vary depending on the casting conditions (temperature, catalyst, accelerator and inhibitor ratio). Thus, the gel time can be adjusted by varying the percentages of catalyst and accelerators.
- the freezing time varies from 20 min to 2 h.
- the mold used for curing the resin can be formed directly by the packaging for transporting and / or storing radioactive products.
- the packaging may include peripheral housings in which the mixture is poured.
- Another subject of the invention is a packaging for transporting and / or storing radioactive products comprising a screen formed from the composite material described above.
- Figure 1 shows the mass losses (in%) at 160 and 170 ° C of two materials according to the invention as a function of time (in days).
- a polymerizable mixture is prepared from the vinyl ester resin Dérakane Momentum 470-300, styrene, zinc borate Zn 2 0 ⁇ 4/5 H 7 B 6 and magnesium hydroxide using the proportions given in table 1 appended .
- the following constituents are added to the mixture: - 1% by weight, relative to the mass of resin + styrene, of the accelerator 55028 sold by Akzo, and - 2% by weight, relative to the mass of resin + styrene, of the Butanox M50 catalyst (methyl ethyl ketone peroxide) sold by Akzo.
- a composite material is thus obtained having the following properties:
- the material obtained has satisfactory thermal properties.
- the specific heat Cp is measured by differential enthalpy analysis (DSC 30, METTLER), with a temperature rise rate of 10 ° C / min, over a temperature range from 30 to 200 ° C.
- Cp values are between 1.19 Jg ⁇ . o C "1 and 1.89 Jg " 1 . 0 ⁇ 1 for temperatures between 40 ° C and 180 ° C.
- Thermal conductivity measurements are also carried out for temperatures ranging from 25 ° C to 180 ° C. Values range from 0.75 to 0.91 .m ⁇ K "1 .
- the mechanical properties of the material are also determined by carrying out compression tests at 23 ° C, on test pieces 10 mm in diameter and 20 mm in height, with a Adamel Lhomargy DY26 dynamometer and a test speed of 1 mm / min. The results obtained are as follows:
- the mixture also comprises: 0.9% by weight, relative to the mass of resin, of the NL 49P accelerator sold by Akzo, and
- the hardening is carried out at ambient temperature and a material having the following characteristics is obtained after 25 minutes:
- the material obtained has satisfactory thermal properties.
- the specific heat Cp is measured by differential enthalpy analysis (DSC30, METTLER), with a temperature rise rate of 10 ° C / min, over a temperature range from 40 ° C to 180 ° C. Cp values are between 1.07 and 1.65 Jg "1. O C " 1 .
- the mechanical properties of the material are also determined by carrying out compression tests at 23 ° C. We can thus determine the compression modulus of the material which is 4299 ⁇ 276 MPa.
- Example 2 Given the hydrogen content, the material of Example 2 is particularly suitable for an application in radiation protection.
- the aging tests over 6 months consist in placing samples of the material of dimensions 35 x 25 x 95 mm in an oven at 160 ° C and 170 ° C and monitoring the loss of mass of these samples over time.
- the curves for the evolution of the mass loss of materials (in%) as a function of time (in days) are shown in Figure 1. Fire behavior tests of the materials of Examples 1 and 2 were also carried out.
- Each half-hour fire test at 800 ° C. was carried out on two blocks 240 mm in diameter and 60 mm in height from the materials of Examples 1 and 2.
- the flame was directly in contact with the material while the second blocks were protected by a steel sheet 1 mm thick. In both cases, and for both materials, self-extinguishing is immediate after removal of the torch.
- Example 3 The same procedure is followed as in Example 1 to prepare a neutron shielding material and to maintain the subcriticality from the following mixture:
- the mixture also includes:
- Example 3 Given its high boron content, the material of Example 3 has excellent efficiency in maintaining subcriticality.
- the material of the invention has very advantageous properties for neutron shielding and the maintenance of subcriticality during the transport of nuclear fuel assemblies.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Sealing Material Composition (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Claims
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT02804603T ATE472806T1 (de) | 2001-12-12 | 2002-12-10 | Werkstoff auf basis von vinylesterharz zur neutronenabschirmung und zur aufrechterhaltung der unterkritikalität |
| US10/497,267 US7160486B2 (en) | 2001-12-12 | 2002-12-10 | Material based on vinylester resin for neutron shielding and maintenance of sub-criticality |
| EP02804603A EP1454327B1 (fr) | 2001-12-12 | 2002-12-10 | Materiau de blindage neutronique et de maintien de la sous-criticite a base de resine vinylester |
| AU2002366643A AU2002366643A1 (en) | 2001-12-12 | 2002-12-10 | Material for neutron shielding and for maintaining sub-criticality based on vinylester resin |
| DE60236890T DE60236890D1 (de) | 2001-12-12 | 2002-12-10 | Werkstoff auf basis von vinylesterharz zur neutronenabschirmung und zur aufrechterhaltung der unterkritikalität |
| KR1020047008911A KR100947528B1 (ko) | 2001-12-12 | 2002-12-10 | 중성자 차폐 및 아임계 유지용 비닐에스테르 수지계 재료 |
| JP2003551792A JP4732689B2 (ja) | 2001-12-12 | 2002-12-10 | 中性子遮蔽及び未臨界維持のためのビニルエステル樹脂をベースにした物質、その製造方法および該物質から形成された遮蔽材を含む放射性物質の輸送及び/又は保管用梱包物 |
| ZA2004/03576A ZA200403576B (en) | 2001-12-12 | 2004-05-11 | Material based on vinylester resin for neutron shielding and maintenance of sub-criticality |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0116036A FR2833402B1 (fr) | 2001-12-12 | 2001-12-12 | Materiau de blindage neutronique et de maintien de la sous- criticite a base de resine vinylester |
| FR01/16036 | 2001-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003050822A2 true WO2003050822A2 (fr) | 2003-06-19 |
| WO2003050822A3 WO2003050822A3 (fr) | 2004-02-19 |
Family
ID=8870372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2002/004255 Ceased WO2003050822A2 (fr) | 2001-12-12 | 2002-12-10 | Materiau de blindage neutronique et de maintien de la sous-criticite a base de resine vinylester |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US7160486B2 (fr) |
| EP (1) | EP1454327B1 (fr) |
| JP (1) | JP4732689B2 (fr) |
| KR (1) | KR100947528B1 (fr) |
| AT (1) | ATE472806T1 (fr) |
| AU (1) | AU2002366643A1 (fr) |
| DE (1) | DE60236890D1 (fr) |
| ES (1) | ES2348387T3 (fr) |
| FR (1) | FR2833402B1 (fr) |
| WO (1) | WO2003050822A2 (fr) |
| ZA (1) | ZA200403576B (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3038113A1 (fr) | 2014-12-23 | 2016-06-29 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Utilisation d'un matériau comprenant une matrice solide à base d'un polymère silicone et des charges inorganiques comme matériau neutrophage |
| CN113773651A (zh) * | 2021-09-02 | 2021-12-10 | 中海油常州涂料化工研究院有限公司 | 一种常温固化的中子屏蔽材料及其制备方法 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830367B1 (fr) * | 2001-10-01 | 2003-12-19 | Transnucleaire | Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature |
| FR2846467B1 (fr) * | 2002-10-25 | 2005-01-28 | Cogema Logistics | Materiau de blindage neutronique et de maintien de la sous-criticite, son procede de preparation et ses applications |
| WO2004079750A1 (fr) * | 2003-03-03 | 2004-09-16 | Mitsubishi Heavy Industries, Ltd. | Fut, composition d'un corps de protection contre les neutrons, et procede de fabrication de ce corps de protection |
| US8664630B1 (en) * | 2011-03-22 | 2014-03-04 | Jefferson Science Associates, Llc | Thermal neutron shield and method of manufacture |
| CZ306407B6 (cs) * | 2014-02-19 | 2017-01-11 | Petr Kraus | Způsob výroby tvarovaného dílu z materiálu odstiňujícího radioaktivní záření a tvarovaný díl vyrobený tímto způsobem |
| FR3087293B1 (fr) | 2018-10-15 | 2020-10-09 | Tn Int | Materiau composite de blindage neutronique et de maintien de la sous-criticite, son procede de fabrication et ses utilisations |
| WO2021252112A1 (fr) | 2020-05-20 | 2021-12-16 | Neutroelectric, Llc | Compositions de protection contre les neutrons et d'absorption des rayonnements |
| US12051516B1 (en) * | 2020-09-01 | 2024-07-30 | GeoPlasma, LLC | Method of manufacturing advanced composites and coatings for radiation environment shielding |
| FR3124018B1 (fr) | 2021-06-10 | 2024-07-05 | Orano Nuclear Packages And Services | Matériau composite de blindage neutronique et de maintien de la sous-criticité, son procédé de fabrication et ses utilisations |
Family Cites Families (30)
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|---|---|---|---|---|
| US2796411A (en) * | 1947-01-29 | 1957-06-18 | Raymond E Zirkle | Radiation shield |
| BE567962A (fr) * | 1956-11-02 | |||
| US3133887A (en) * | 1958-10-06 | 1964-05-19 | Norton Co | Neutron shields and methods of manufacturing them |
| US3261800A (en) * | 1960-09-08 | 1966-07-19 | Du Pont | Boron nitride incorporated in polymer products |
| GB1049890A (en) * | 1962-11-30 | 1966-11-30 | Albert Ag Chem Werke | Improvements in or relating to resins |
| US3609372A (en) * | 1963-06-04 | 1971-09-28 | Marxen Friedrich | Shaped polymeric shield against neutron and gamma radiation |
| US3361684A (en) * | 1966-01-18 | 1968-01-02 | Werner H Kreidl | Thermosetting resin matrix containing boron compounds of specific size distribution and method of making |
| US4134937A (en) * | 1974-06-12 | 1979-01-16 | Monsanto Research Corporation | Polyester resin composition |
| JPS5933874B2 (ja) * | 1979-03-09 | 1984-08-18 | 三井造船株式会社 | 中性子遮蔽材 |
| JPS57147095A (en) * | 1981-03-07 | 1982-09-10 | Kimura Kakoki Co Ltd | Neutron shielding material |
| EP0108622B1 (fr) * | 1982-11-08 | 1988-03-02 | Mitsubishi Rayon Co., Ltd. | Composition d'une résine synthétique et procédé pour la fabrication de cette composition |
| JPS59126296A (ja) * | 1983-01-06 | 1984-07-20 | 三井・デュポン ポリケミカル株式会社 | 積層複合物 |
| JPS60194394A (ja) * | 1984-03-15 | 1985-10-02 | 三井化学株式会社 | 中性子遮蔽材 |
| JPS61173198A (ja) * | 1985-01-29 | 1986-08-04 | 株式会社神戸製鋼所 | 中性子遮蔽材 |
| JPS61213695A (ja) * | 1985-03-19 | 1986-09-22 | 株式会社神戸製鋼所 | 中性子遮蔽材 |
| JPS61213694A (ja) * | 1985-03-19 | 1986-09-22 | 株式会社神戸製鋼所 | 中性子遮蔽材 |
| JPS61290400A (ja) * | 1985-06-18 | 1986-12-20 | 株式会社神戸製鋼所 | 中性子遮蔽材 |
| GB8827531D0 (en) * | 1988-11-25 | 1988-12-29 | Du Pont Canada | Highly filled compositions |
| JPH06103357B2 (ja) * | 1989-06-23 | 1994-12-14 | 動力炉・核燃料開発事業団 | 中性子遮蔽材 |
| JP2851414B2 (ja) * | 1990-10-31 | 1999-01-27 | 昭和高分子株式会社 | 耐熱性ビニルエステル樹脂組成物 |
| JPH0527088A (ja) * | 1991-07-22 | 1993-02-05 | Nippon Petrochem Co Ltd | 透明な高速中性子遮蔽材および遮蔽方法 |
| JPH06148388A (ja) * | 1992-11-10 | 1994-05-27 | Mitsubishi Gas Chem Co Inc | 中性子遮蔽材用組成物 |
| JPH06180389A (ja) * | 1992-12-11 | 1994-06-28 | Sanoya Sangyo Kk | γ線、X線及び中性子線の同時遮蔽が可能な放射線遮蔽材 |
| PL303058A1 (en) * | 1994-04-19 | 1995-10-30 | Marceli Cyrkiewicz | Method of obtaining plastics of high chemical resistance and mechanical strength as well as plastics of high chemical resistance and mechanical strength |
| FR2738971B1 (fr) * | 1995-09-19 | 1997-10-10 | Schlumberger Ind Sa | Procede de determination d'une cle de cryptage associee a un circuit integre |
| JP3150672B1 (ja) * | 1999-10-13 | 2001-03-26 | 三菱重工業株式会社 | 中性子遮蔽体およびこれを用いたキャスク |
| JP2001116885A (ja) * | 1999-10-18 | 2001-04-27 | Mitsubishi Heavy Ind Ltd | レジン充填装置およびレジン充填方法 |
| DE19955192C2 (de) * | 1999-11-16 | 2003-04-17 | Arntz Beteiligungs Gmbh & Co | Verfahren zur Herstellung eines Strahlenschutzmaterials |
| FR2830367B1 (fr) * | 2001-10-01 | 2003-12-19 | Transnucleaire | Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature |
| JP3951685B2 (ja) * | 2001-11-30 | 2007-08-01 | 株式会社日立製作所 | 中性子遮蔽材及び使用済み燃料収納容器 |
-
2001
- 2001-12-12 FR FR0116036A patent/FR2833402B1/fr not_active Expired - Fee Related
-
2002
- 2002-12-10 AU AU2002366643A patent/AU2002366643A1/en not_active Abandoned
- 2002-12-10 JP JP2003551792A patent/JP4732689B2/ja not_active Expired - Lifetime
- 2002-12-10 AT AT02804603T patent/ATE472806T1/de not_active IP Right Cessation
- 2002-12-10 ES ES02804603T patent/ES2348387T3/es not_active Expired - Lifetime
- 2002-12-10 DE DE60236890T patent/DE60236890D1/de not_active Expired - Lifetime
- 2002-12-10 KR KR1020047008911A patent/KR100947528B1/ko not_active Expired - Lifetime
- 2002-12-10 WO PCT/FR2002/004255 patent/WO2003050822A2/fr not_active Ceased
- 2002-12-10 US US10/497,267 patent/US7160486B2/en not_active Expired - Lifetime
- 2002-12-10 EP EP02804603A patent/EP1454327B1/fr not_active Expired - Lifetime
-
2004
- 2004-05-11 ZA ZA2004/03576A patent/ZA200403576B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3038113A1 (fr) | 2014-12-23 | 2016-06-29 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Utilisation d'un matériau comprenant une matrice solide à base d'un polymère silicone et des charges inorganiques comme matériau neutrophage |
| CN113773651A (zh) * | 2021-09-02 | 2021-12-10 | 中海油常州涂料化工研究院有限公司 | 一种常温固化的中子屏蔽材料及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005512101A (ja) | 2005-04-28 |
| ATE472806T1 (de) | 2010-07-15 |
| US7160486B2 (en) | 2007-01-09 |
| FR2833402B1 (fr) | 2004-03-12 |
| EP1454327A2 (fr) | 2004-09-08 |
| KR20040079904A (ko) | 2004-09-16 |
| ZA200403576B (en) | 2005-06-29 |
| US20050012054A1 (en) | 2005-01-20 |
| DE60236890D1 (de) | 2010-08-12 |
| ES2348387T3 (es) | 2010-12-03 |
| KR100947528B1 (ko) | 2010-03-15 |
| EP1454327B1 (fr) | 2010-06-30 |
| FR2833402A1 (fr) | 2003-06-13 |
| JP4732689B2 (ja) | 2011-07-27 |
| AU2002366643A1 (en) | 2003-06-23 |
| WO2003050822A3 (fr) | 2004-02-19 |
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