EP1446808A2 - Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature - Google Patents
Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insatureInfo
- Publication number
- EP1446808A2 EP1446808A2 EP02785511A EP02785511A EP1446808A2 EP 1446808 A2 EP1446808 A2 EP 1446808A2 EP 02785511 A EP02785511 A EP 02785511A EP 02785511 A EP02785511 A EP 02785511A EP 1446808 A2 EP1446808 A2 EP 1446808A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- material according
- boron
- inorganic
- compound
- hydrogenated
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 62
- 229920000642 polymer Polymers 0.000 title abstract 2
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 15
- 229910052796 boron Inorganic materials 0.000 claims abstract description 14
- 229920006337 unsaturated polyester resin Polymers 0.000 claims abstract description 14
- 150000001639 boron compounds Chemical class 0.000 claims abstract description 13
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 239000001257 hydrogen Substances 0.000 claims abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 29
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 23
- 239000011701 zinc Substances 0.000 claims description 11
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 9
- 229920002554 vinyl polymer Polymers 0.000 claims description 9
- 229910052580 B4C Inorganic materials 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000003085 diluting agent Substances 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical class [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000002285 radioactive effect Effects 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 229910021540 colemanite Inorganic materials 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000004677 hydrates Chemical class 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 239000012766 organic filler Substances 0.000 claims description 2
- 229910011255 B2O3 Inorganic materials 0.000 claims 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 1
- 229920005989 resin Polymers 0.000 description 20
- 239000011347 resin Substances 0.000 description 20
- 239000000470 constituent Substances 0.000 description 8
- -1 allylic compound Chemical class 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 229920006305 unsaturated polyester Polymers 0.000 description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 239000003758 nuclear fuel Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- QAEKNCDIHIGLFI-UHFFFAOYSA-L cobalt(2+);2-ethylhexanoate Chemical compound [Co+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O QAEKNCDIHIGLFI-UHFFFAOYSA-L 0.000 description 2
- GGSUCNLOZRCGPQ-UHFFFAOYSA-N diethylaniline Chemical compound CCN(CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- GYVGXEWAOAAJEU-UHFFFAOYSA-N n,n,4-trimethylaniline Chemical compound CN(C)C1=CC=C(C)C=C1 GYVGXEWAOAAJEU-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical compound C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- MMEDJBFVJUFIDD-UHFFFAOYSA-N 2-[2-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=CC=C1CC(O)=O MMEDJBFVJUFIDD-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Natural products CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012753 anti-shrinkage agent Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 150000001638 boron Chemical class 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000012933 diacyl peroxide Substances 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229940117969 neopentyl glycol Drugs 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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.
- Such materials 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 packaging. for the storage of 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. Thus, this document does not provide for the addition of boron compounds.
- the preferred thermosetting resin is an epoxy resin.
- Document 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 partly derived from boric acid or the polymerizable monomer is partly an ester of boric acid.
- the boron content is 0.3 to 5% by weight. This boron content remains insufficient to effectively ensure the absorption of neutrons. Furthermore, this material does not exhibit self-extinguishing.
- the present invention specifically relates to a neutron shielding material which makes it possible to ensure the maintenance of the subcriticality thanks to the presence of a boron compound in sufficient quantity.
- the neutron shielding material and for maintaining the subcriticality comprises an unsaturated polyester resin, at least one inorganic boron compound, and at least one hydrogenated inorganic compound in quantities such that the boron concentration is 4.10 21 to 25.10 21 , preferably from 9.10 21 to 15.10 21 atoms per cm 3 and that the hydrogen concentration is from 3.10 22 to 5.5.10 22 , preferably from 4.10 22 to 5.10 22 atoms per cm 3 .
- the unsaturated polyester resin can be of different types.
- resins obtained by polycondensation of one or more diacids with one or more glycols are used, at least one of the constituents containing an ethylenic double bond capable of reacting subsequently on a vinyl, acrylic or allylic compound.
- polyesters examples include the following polyesters:
- the resin M00 70C supplied by Cray Valley Total which is a resin based on maleic acid and propylene glycol, crosslinked with styrene;
- the resins obtained from common polyols such as propylene glycol, dipropylene glycol, diethylene glycol and oxyethylated or oxypropylated polyols of the ethylene glycol oxyethylenated type and unsaturated diacids such as maleic anhydride, citraconic, metaconic acid and itaconic acid, or saturated diacids such as phthalic anhydride and its chlorinated or brominated derivatives.
- these resins were transformed into a thermoset material by reaction with a copolymerizable monomer such as styrene and styrene derivatives such as methylstyrene, and divinylbenzene.
- a copolymerizable monomer such as styrene and styrene derivatives such as methylstyrene, and divinylbenzene.
- the inorganic boron compound and the hydrogenated inorganic compound are chosen and their amounts so as to obtain boron and hydrogen concentrations situated in the ranges indicated above.
- the boron compounds which can be used belong to the group comprising boric acid H 3 B0 3 , colemanite Ca 2 O ⁇ 4 B 6 H 10 , zinc borates
- the composite material of the invention comprises two inorganic boron compounds, one of which is hydrogenated, for example zinc borate Zn 2 0 ⁇ 4 , 5H 7 B 6 or Zn 4 0 8 B 2 H 2 or Zn 2 ⁇ nB 6 , and boron carbide.
- the hydrogenated inorganic compounds which can be used preferably belong to the group of alumina hydrates and magnesium hydroxide.
- alumina hydrate Al (OH) 3 is used .
- the material of the invention can also comprise poly (vinyl acetate) to give the material an anti-shrinkage character. It can also further comprise a hydrogenated organic filler such as melanin, in order to improve its self-extinguishing properties.
- 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 radioactive materials.
- the material has a fire resistance, which supposes that it is self-extinguishing, that is to say that the fire stops when the flame is suppressed; it therefore does not fuel the fire.
- this self-extinguishing property is conferred in particular by the presence of hydrogenated and / or boron inorganic compounds, for example alumina hydrate or borate of zinc.
- the self-extinguishing character can also be conferred by the presence of melanin.
- 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.
- thermosetting unsaturated polyester resin that is to say including the vinyl diluent, for example styrene.
- the material has a density equal to or greater than 1.7, for example from 1.7 to 1.85.
- the boron content is preferably at least 9.4 ⁇ 10 21 boron atoms per cm 3 .
- the material of the invention can be prepared by curing a mixture of the constituents in the unsaturated polyester resin in solution in a vinyl thinner.
- the invention also relates to a process for preparing the neutron shielding material described above, which consists in preparing a mixture of the unsaturated polyester resin in solution in a vinyl diluent with the inorganic compound (s) of boron and the hydrogenated inorganic compound (s), to add to the mixture a catalyst and a hardening accelerator, to pour the mixture into a mold and let it harden in the mold.
- the vinyl diluent can be, for example, styrene, vinyltoluene, divinylbenzene, methylstyrene, methyl acrylate, methyl methacrylate or an allyl derivative such as diallyl phthalate.
- styrene is used which makes it possible both to dissolve the unsaturated polyester resin and to ensure its hardening by copolymerization.
- the curing catalysts and accelerators used are chosen from the compounds usually used for curing unsaturated polyesters.
- the catalysts can in particular be organic peroxides, for example:
- - peroxides derived from ketone such as methyl ethyl ketone peroxide, acetylacetone peroxide, methyl isobutyl ketone peroxide and cyclohexanone peroxide
- - diacyl peroxides for example benzoyl peroxide, optionally in combination with aromatic tertiary amines such as dimethylaniline, diethylaniline and dimethylparatoluidine
- - dialkyl peroxides such as dicumyl peroxide and ditertiobutyl peroxide.
- the most commonly used accelerators are divalent cobalt salts such as naphtenate or
- aromatic tertiary amines such as dimethylaniline, dimethylparatoluidine and diethylaniline.
- additives such as crosslinking inhibitors, surfactants and anti-shrinkage agents.
- 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 two concentric walls, for example two steel ferrules, between which the mixture is poured before hardening.
- the packaging can also include peripheral housings into which the mixture is poured.
- Figure 1 represents the loss of mass (in%) at 50 ° C of a material according to the invention as a function of time (in hours).
- FIG. 2 represents the loss of mass (in%) at 150 ° C. of a material according to the invention as a function of time (in hours).
- Example 1 A polymerizable mixture is prepared from the unsaturated polyester resin Norsodyne M 0070C, which is in solution in styrene, poly (vinyl acetate) PVAC, zinc borate Zn 2 0i 4 , 5 H 7 B 6 , colemanite, boron carbide, and alumina hydrate using the proportions given in Table 1. The following constituents are added to the mixture:
- the hardening of the resin is then carried out.
- the mold consists of a packaging for transporting nuclear fuels comprising:
- a composite material is thus obtained having the following properties:
- Example 1 The same procedure is followed as in Example 1 using the constituents and the proportions given in Table 1.
- the mixture also includes:
- the hardening is carried out at room temperature and a material having the following characteristics is obtained after 20 to 30 minutes:
- the material obtained has satisfactory thermal properties.
- T g determined by TMA (METTLER) with an increase in temperature of 10 ° C / min, is around 145 ° C.
- the glass transition temperature has a not insignificant influence on the thermomechanical behaviors because beyond this temperature the material has a rubbery behavior.
- the mechanical properties of the material are also determined by carrying out compression tests at temperatures of -40, +23 and + 150 ° C. We can thus determine the compression modulus of the material and the results obtained are given in Table 4.
- the aging tests at 50 ° C over 6 months consist in placing samples of the material with dimensions 25 x 35 x 100 mm in an oven at 50 ° C and at monitor the mass loss of these samples over time.
- the curve for the change in mass loss of the material (in%) as a function of time (in hours) is shown in FIG. 1.
- Thermal aging tests are also carried out at 150 ° C., the samples having identical dimensions .
- Figure 2 illustrates the loss of mass (in%) of this material, at 150 ° C, as a function of time (in hours). Fire behavior tests of this material were also carried out on samples of dimensions 400 x 300 x 20 mm. For this test, the material is classified "Ml" which is very satisfactory.
- a half-hour fire test at 800 ° C was also carried out on two blocks 240 mm in diameter and 60 mm in height.
- the flame was directly in contact with the material while the second block was protected by a steel sheet 1 mm thick.
- self-extinguishing of the resin is immediate after removal of the torch.
- the thickness of charred material is 9 mm.
- the thickness of charred material is 2 mm.
- Example 2 The same procedure is followed as in Example 1 for preparing a neutron shielding material and for maintaining the subcriticality using the constituents and the proportions given in Table 1 and recalled below: unsaturated polyester M0070C 27% by weight added styrene 5% by weight zinc borate 13% by weight boron carbide B 4 C 15% by weight alumina hydrate Al (OH) 3 40% by weight
- the mixture also includes:
- the material of the invention has very advantageous properties for neutron shielding and the maintenance of subcriticality during the transport of irradiated nuclear fuel assemblies.
Landscapes
- Dispersion Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Polymerisation Methods In General (AREA)
- Measurement Of Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Sealing Material Composition (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0112592 | 2001-10-01 | ||
| FR0112592A FR2830367B1 (fr) | 2001-10-01 | 2001-10-01 | Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature |
| PCT/FR2002/003307 WO2003030183A2 (fr) | 2001-10-01 | 2002-09-27 | Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1446808A2 true EP1446808A2 (fr) | 2004-08-18 |
| EP1446808B1 EP1446808B1 (fr) | 2009-03-25 |
Family
ID=8867790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02785511A Expired - Lifetime EP1446808B1 (fr) | 2001-10-01 | 2002-09-27 | Materiau de blindage neutronique et de maintien de la sous-criticite a base de polyester insature |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7524438B2 (fr) |
| EP (1) | EP1446808B1 (fr) |
| JP (1) | JP2005521859A (fr) |
| KR (1) | KR100901151B1 (fr) |
| AT (1) | ATE426900T1 (fr) |
| DE (1) | DE60231735D1 (fr) |
| ES (1) | ES2324904T3 (fr) |
| FR (1) | FR2830367B1 (fr) |
| WO (1) | WO2003030183A2 (fr) |
| ZA (1) | ZA200402341B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2400505A1 (fr) | 2010-06-28 | 2011-12-28 | Constructions Industrielles de la Méditerranée - CNIM | Matériau de blindage neutronique, dispositif de stockage et de transport radioactifs et procédé de fabrication |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2833402B1 (fr) * | 2001-12-12 | 2004-03-12 | Transnucleaire | Materiau de blindage neutronique et de maintien de la sous- criticite a base de resine vinylester |
| 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 |
| EP2489064A4 (fr) | 2009-10-13 | 2014-02-19 | Nat Inst Aerospace Associates | Matériaux de conversion d'énergie fabriqués avec des nanotubes de nitrure de bore (bnnt) et composites de polymère de bnnt |
| KR101192901B1 (ko) | 2010-06-04 | 2012-10-18 | 강우석 | 유연성 및 복원성을 갖는 중성자 방사선 흡수시트, 이로 만든 의복 및 그 제조방법 |
| US8664630B1 (en) * | 2011-03-22 | 2014-03-04 | Jefferson Science Associates, Llc | Thermal neutron shield and method of manufacture |
| US10607742B2 (en) * | 2011-05-09 | 2020-03-31 | National Institute Of Aerospace Associates | Radiation shielding materials containing hydrogen, boron and nitrogen |
| JP6408392B2 (ja) * | 2014-02-28 | 2018-10-17 | 三洋化成工業株式会社 | 中性子線遮へい材用ポリウレタン樹脂形成性組成物 |
| JP6480663B2 (ja) * | 2014-02-28 | 2019-03-13 | 善則 菅野 | 中性子遮蔽材 |
| US10026513B2 (en) | 2014-06-02 | 2018-07-17 | Turner Innovations, Llc. | Radiation shielding and processes for producing and using the same |
| FR3030865A1 (fr) | 2014-12-23 | 2016-06-24 | Commissariat Energie Atomique | Utilisation d'un materiau comprenant une matrice solide a base d'un polymere silicone et des charges inorganiques comme materiau neutrophage |
| CN104965337A (zh) | 2015-07-21 | 2015-10-07 | 深圳市华星光电技术有限公司 | 彩色滤光片的制备方法 |
| JP6935154B2 (ja) * | 2019-08-21 | 2021-09-15 | 日東電工株式会社 | 放射線透過抑制フィルム、ならびに該放射線透過抑制フィルムを用いた放射線透過抑制フィルターおよび撮影装置 |
| WO2021252112A1 (fr) | 2020-05-20 | 2021-12-16 | Neutroelectric, Llc | Compositions de protection contre les neutrons et d'absorption des rayonnements |
| WO2023125468A1 (fr) * | 2021-12-31 | 2023-07-06 | 中硼(厦门)医疗器械有限公司 | Composition de résine contenant du bore, matériau composite de résine de fibre contenant du bore et application associée |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2796411A (en) * | 1947-01-29 | 1957-06-18 | Raymond E Zirkle | Radiation shield |
| BE567962A (fr) * | 1956-11-02 | |||
| GB929102A (fr) * | 1958-07-09 | |||
| 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 |
| FR2092848A7 (en) * | 1970-06-24 | 1972-01-28 | Calhene | Neutron radiation absorber - of boron cpd in polymer matrix |
| US3829532A (en) * | 1971-08-18 | 1974-08-13 | Standard Oil Co | Flame-resistant polyester composition |
| US3879318A (en) * | 1972-06-02 | 1975-04-22 | Rohm & Haas | Organic amide containing compositions and process for thickening control of polyesters |
| 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 |
| FR2505080B1 (fr) * | 1981-04-29 | 1987-12-18 | Marc Robert | Parois anti-atomiques, neutroniques et polluants chimiques |
| 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 |
| EP0119781A1 (fr) * | 1983-03-04 | 1984-09-26 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Matière de protection contre les neutrons |
| FR2546331A1 (fr) * | 1983-05-20 | 1984-11-23 | Robatel Slpi | Perfectionnements aux materiaux hydrogenes de protection antineutronique |
| JPS6065032A (ja) | 1983-09-20 | 1985-04-13 | Sumitomo Bakelite Co Ltd | 熱硬化性樹脂成形品の製造方法 |
| GB8827531D0 (en) | 1988-11-25 | 1988-12-29 | Du Pont Canada | Highly filled compositions |
| 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 |
| 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 |
| DE19955192C2 (de) * | 1999-11-16 | 2003-04-17 | Arntz Beteiligungs Gmbh & Co | Verfahren zur Herstellung eines Strahlenschutzmaterials |
| 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 |
| FR2833402B1 (fr) * | 2001-12-12 | 2004-03-12 | Transnucleaire | Materiau de blindage neutronique et de maintien de la sous- criticite a base de resine vinylester |
| 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 |
-
2001
- 2001-10-01 FR FR0112592A patent/FR2830367B1/fr not_active Expired - Fee Related
-
2002
- 2002-09-27 KR KR1020047004768A patent/KR100901151B1/ko not_active Expired - Fee Related
- 2002-09-27 EP EP02785511A patent/EP1446808B1/fr not_active Expired - Lifetime
- 2002-09-27 ES ES02785511T patent/ES2324904T3/es not_active Expired - Lifetime
- 2002-09-27 US US10/490,714 patent/US7524438B2/en not_active Expired - Fee Related
- 2002-09-27 AT AT02785511T patent/ATE426900T1/de not_active IP Right Cessation
- 2002-09-27 JP JP2003533288A patent/JP2005521859A/ja active Pending
- 2002-09-27 WO PCT/FR2002/003307 patent/WO2003030183A2/fr not_active Ceased
- 2002-09-27 DE DE60231735T patent/DE60231735D1/de not_active Expired - Lifetime
-
2004
- 2004-03-25 ZA ZA200402341A patent/ZA200402341B/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03030183A2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2400505A1 (fr) | 2010-06-28 | 2011-12-28 | Constructions Industrielles de la Méditerranée - CNIM | Matériau de blindage neutronique, dispositif de stockage et de transport radioactifs et procédé de fabrication |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050001205A1 (en) | 2005-01-06 |
| KR100901151B1 (ko) | 2009-06-04 |
| DE60231735D1 (de) | 2009-05-07 |
| KR20040068919A (ko) | 2004-08-02 |
| FR2830367B1 (fr) | 2003-12-19 |
| ZA200402341B (en) | 2004-10-07 |
| EP1446808B1 (fr) | 2009-03-25 |
| FR2830367A1 (fr) | 2003-04-04 |
| WO2003030183A3 (fr) | 2003-12-04 |
| JP2005521859A (ja) | 2005-07-21 |
| ES2324904T3 (es) | 2009-08-19 |
| US7524438B2 (en) | 2009-04-28 |
| WO2003030183A2 (fr) | 2003-04-10 |
| ATE426900T1 (de) | 2009-04-15 |
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