CN111403063B - Radiation protection composition, radiation protection material and radiation protection product - Google Patents
Radiation protection composition, radiation protection material and radiation protection product Download PDFInfo
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- CN111403063B CN111403063B CN201811604427.7A CN201811604427A CN111403063B CN 111403063 B CN111403063 B CN 111403063B CN 201811604427 A CN201811604427 A CN 201811604427A CN 111403063 B CN111403063 B CN 111403063B
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- 230000005855 radiation Effects 0.000 title claims abstract description 146
- 230000004224 protection Effects 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 43
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 96
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims abstract description 33
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 15
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 69
- 239000002245 particle Substances 0.000 claims description 55
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims description 45
- 229920001971 elastomer Polymers 0.000 claims description 28
- 239000005060 rubber Substances 0.000 claims description 27
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 17
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 230000003746 surface roughness Effects 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 6
- 230000004223 radioprotective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000009206 nuclear medicine Methods 0.000 abstract description 4
- 238000001959 radiotherapy Methods 0.000 abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 229910000416 bismuth oxide Inorganic materials 0.000 description 8
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 8
- 230000005865 ionizing radiation Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 5
- 229910001930 tungsten oxide Inorganic materials 0.000 description 5
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- -1 bismuth oxide Chemical class 0.000 description 3
- 239000013536 elastomeric material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
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- 238000002791 soaking Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
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- 230000030833 cell death Effects 0.000 description 1
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- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 208000026278 immune system disease Diseases 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
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- 229920003049 isoprene rubber Polymers 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000000718 radiation-protective agent Substances 0.000 description 1
- 230000001950 radioprotection Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material
- G21F3/02—Clothing
- G21F3/035—Gloves
-
- 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
- G21F1/08—Metals; Alloys; Cermets, i.e. sintered mixtures of ceramics and metals
- G21F1/085—Heavy metals or alloys
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Metallurgy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Ceramic Engineering (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Gloves (AREA)
Abstract
The invention discloses a radiation protection composition, a radiation protection material and a radiation protection product. The radiation protection composition comprises the following components in parts by weight: 5 to 20 parts of lanthanum oxide and 50 to 80 parts of a third metal oxide, the third metal oxide comprising tantalum pentoxide. The radiation protection composition is used for manufacturing radiation protection products, has better radiation protection performance, and the manufactured radiation protection products such as gloves and the like have better comfortableness, and are particularly suitable for medical staff participating in radiotherapy and nuclear medicine.
Description
Technical Field
The invention relates to the technical field of radiation protection, in particular to a radiation protection composition, a radiation protection material and a radiation protection product.
Background
Ionizing radiation is widely used in industrial and medical fields, and there are many opportunities for people to suffer from ionizing radiation, wherein X-ray radiation is the most common harmful ionizing radiation, and is easily suffered from such as radiation therapy such as interventional operation, medical workers for radiodiagnosis, workers for nuclear waste disposal, residents living in high-radiation areas or suffering from nuclear leakage accidents, and the like. After exposure to ionizing radiation, the body can develop a range of lesions including immune dysfunction, genetic mutations, cell death and even cancer. Radiation protection techniques, also known as radioprotection techniques or radiation shielding techniques, are techniques that are specifically used to protect people from ionizing radiation.
Chinese patent publication No. CN102549057a, entitled "radiation attenuating elastomeric material, anti-ionizing radiation multilayer protective glove and use thereof", discloses a radiation attenuating elastomeric material formed by dispersing a metal oxide powder into an elastomer, the metal oxide powder comprising 70 to 90 mass percent bismuth trioxide, 5 to 15 mass percent tungsten trioxide and 5 to 15 mass percent lanthanum trioxide. The glove layer C2 is about 100 μm thick and layers C1 and C3 are each about 200 μm thick. The glove thickness is about 450 μm to about 710 μm, and the glove achieves a gamma radiation attenuation factor of 1.5 to 4.
The Chinese patent publication No. CN105513660A entitled "novel radiation protection Material and glove made" discloses a radiation protection material comprising the following components by weight percent: nano bismuth trioxide: 55-73%; aluminum fluoride: 20-35%; lanthanum trioxide: 3-10%; nano tungsten trioxide: 3-10%; fullerol nanoparticles: 1-2%. The weight percentage of the radiation-proof material in the glove is about 30-40%, and the radiation-proof material can reach 60-65% of shielding under the irradiation of 60keV energy.
European patent publication No. EP1644938B1, entitled "RADIATION PROTECTION MATERIAL, ESPECIALLY FOR USE AS RADIATION PROTECTION GLOVES", discloses the use of bismuth oxide particles dispersed in natural rubber or the use of tungsten oxide, tin oxide or tin oxide/antimony oxide particles mixed with bismuth oxide particles and then dispersed in natural rubber.
The existing scheme is difficult to balance in obtaining better radiation protection performance and better glove comfort, meanwhile, a larger fall exists between the input of product cost and the psychological price of market demand, and objective requirements (such as operation convenience) of the use environment of a user on the product are not considered.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a radiation protection composition with better radiation protection performance, which has better product manufacturing cost so as to be beneficial to general public demand, better operation convenience and accuracy of users, better operation safety and better wearing convenience, and is used for manufacturing products such as gloves and the like, thereby having better wearing comfort.
It is a second object of the present invention to provide a radiation protective material comprising the radiation protective composition.
It is a further object of the present invention to provide a radiation protective article comprising the radiation protective composition described above.
The invention adopts the following technical scheme:
a radiation protective composition comprising, in parts by weight, 5 to 20 parts of lanthanum oxide and 50 to 80 parts of a third metal oxide, the third metal oxide comprising tantalum pentoxide.
Preferably, the third metal oxide comprises 10 to 50 parts by weight of tantalum pentoxide, 10 to 50 parts by weight of tungsten trioxide, or 5 to 20 parts by weight of bismuth trioxide and 10 to 50 parts by weight of tungsten trioxide.
Preferably, the radioprotective composition further comprises 0 to 2 parts by weight of fullerols.
Preferably, the average particle size of the lanthanum oxide is 100 nm-500 nm, the average particle size of the tantalum pentoxide is 100 nm-500 nm, and the hydroxyl number of the fullerol is 8-24.
Preferably, the average particle diameter of the bismuth trioxide is 100 nm-500 nm, and the average particle diameter of the tungsten trioxide is 100 nm-500 nm.
A radiation protective material comprising a substrate selected from rubber, thermoplastic polymer or fabric and the radiation protective composition described above, the radiation protective composition being doped in or bonded to the substrate.
Preferably, the radiation protective material comprises 15 to 50 parts of the base material and 50 to 90 parts of the radiation protective composition in parts by weight.
A radiation protective article comprising the radiation protective composition described above.
Preferably, the radiation protective article is a radiation protective glove having an outer surface with an average surface roughness of 6 μm to 8 μm.
Preferably, the radiation protective article comprises rubber and the radiation protective composition described above, the radiation protective article having a density of 4.0g/cm 3 ～5.0g/cm 3 。
Compared with the prior art, the invention has the beneficial effects that at least the following steps are included: the radiation protection composition is used for manufacturing radiation protection products, has better radiation protection performance, and the manufactured radiation protection products such as gloves and the like have better comfortableness, wearing convenience, safety and accuracy in operation, and is particularly suitable for people affected by radiation, such as medical staff participating in radiotherapy and nuclear medicine. The product of the invention has low manufacturing cost and is beneficial to popularization.
Drawings
Fig. 1 is a schematic view of the structure of a conventional glove.
Fig. 2 is a schematic structural view of a glove for radiation protection according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will now be described in a number of examples. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The technical contribution or effect of the present invention is not limited to solving the technical problems and drawbacks of the background art, and is specifically described in more detail below.
Embodiments of the present invention provide a radiation protective composition comprising a material selected from the group consisting of aluminum oxide (Al 2 O 3 ) Lanthanum oxide (La) 2 O 3 ) Bismuth trioxide (Bi) 2 O 3 ) Tantalum pentoxide (Ta) 2 O 5 ) Tungsten trioxide (WO) 3 ) May further comprise fullerols (C) 60 (OH) n ). The radiation protection composition is used for manufacturing radiation protection products, can effectively shield ionizing radiation, comprises X rays or gamma rays, and can compensate weak absorption range of an absorption curve of a single substance to the rays by matching the materials so as to achieve the best absorption effect, and can be used in an energy range of 60 keV-120 keVIs particularly suitable for shielding protection in the energy range of 60-80 keV for diagnosis. The material has good chemical stability, is nontoxic, has no degradation effect on the combined base materials, and is an ideal material for shielding ionizing radiation.
Wherein the average particle diameter of the aluminum oxide is 100 nm-500 nm, alternatively, the average particle diameter of the aluminum oxide is 200nm, 300nm, 350nm, 400nm. The average particle size of the lanthanum oxide is 100 nm-500 nm, alternatively, the average particle size of the lanthanum oxide is 200nm, 300nm, 350nm, 400nm. The average particle diameter of the bismuth trioxide is 100 nm-500 nm, alternatively, the average particle diameter of the bismuth trioxide is 200nm, 300nm, 350nm, 400nm. The average particle size of tantalum pentoxide is 100nm to 500nm, alternatively, the average particle size of tantalum pentoxide is 200nm, 300nm, 350nm, 400nm. The average particle size of the tungsten trioxide is 100nm to 500nm, alternatively, the average particle size of the tungsten trioxide is 200nm, 300nm, 350nm, 400nm. The hydroxyl number n of the fullerols is 8 to 24, alternatively, the hydroxyl number n of the fullerols is 10, 15, 20. In the above particle size range, the radiation protection composition of the present invention has better radiation protection performance.
In one embodiment, the radiation protective composition comprises, in parts by weight, 5 to 20 parts of aluminum oxide and 5 to 20 parts of lanthanum oxide. Alternatively, the weight part of aluminum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of lanthanum oxide may be 10 parts, 12 parts, or 15 parts. The aluminum oxide is matched with lanthanum oxide to play a role of a radiation protective agent, so that the surface glossiness of the product can be obviously improved.
In another embodiment, the radiation protective composition comprises 5 to 20 parts by weight of lanthanum oxide and 25 to 70 parts by weight of tungsten oxide. Alternatively, the weight part of lanthanum oxide may be 5 parts, 10 parts, 12 parts or 15 parts, and the weight part of tungsten oxide may be 30 parts, 40 parts, 50 parts, 55 parts or 60 parts, but it should be noted that the dosage of tungsten oxide is controlled within government-allowed safety limits. Tungsten trioxide contributes to the color display on the surface of materials and articles.
In yet another embodiment, the radiation protective composition includes 25 to 50 parts bismuth trioxide and 25 to 50 parts tantalum pentoxide in parts by weight. Alternatively, the parts by weight of bismuth trioxide may be 30 parts, 40 parts or 45 parts, and the parts by weight of tantalum pentoxide may be 30 parts, 40 parts or 45 parts.
In yet another embodiment, the radioprotective composition comprises tantalum pentoxide in parts by weight.
In yet another embodiment, the radiation protective composition includes, in parts by weight, 5 to 20 parts of aluminum oxide, 40 to 80 parts of a first metal oxide including bismuth trioxide. Alternatively, the weight part of the aluminum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of the first metal oxide may be 50 parts, 55 parts, 60 parts, 65 parts, or 70 parts. The aluminum oxide and the bismuth oxide are matched, so that the radiation protection performance and the product surface glossiness can be effectively improved, the relative cost of the product is effectively reduced, and the popularization is facilitated.
In yet another embodiment, the radiation protective composition includes, in parts by weight, 5 to 20 parts aluminum oxide and 40 to 55 parts tantalum pentoxide. Alternatively, the weight part of aluminum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of tantalum pentoxide may be 45 parts, 49 parts, 50 parts, or 52 parts.
In yet another embodiment, the radiation protective composition includes 5 to 20 parts lanthanum oxide and 50 to 80 parts of a second metal oxide including bismuth oxide, in parts by weight. Alternatively, the weight part of lanthanum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of the second metal oxide may be 55 parts, 60 parts, 65 parts, or 70 parts.
In yet another embodiment, the radiation protective composition includes 5 to 20 parts by weight of lanthanum oxide and 50 to 80 parts by weight of a third metal oxide including tantalum pentoxide. Alternatively, the weight part of lanthanum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of the third metal oxide may be 55 parts, 60 parts, 65 parts, or 70 parts. The lanthanum oxide and tantalum pentoxide can better promote the radiation absorption effect and make up for the defect in a weak absorption region.
In yet another embodiment, the radiation protective composition comprises, in parts by weight, 5 to 20 parts of aluminum oxide, 5 to 20 parts of lanthanum oxide, and 20 to 60 parts of bismuth oxide. Alternatively, the weight part of aluminum oxide may be 5 parts, 10 parts, 12 parts, or 15 parts, the weight part of lanthanum oxide may be 5 parts, 10 parts, 12 parts, or 15 parts, and the weight part of bismuth oxide may be 30 parts, 40 parts, 45 parts, 50 parts, or 55 parts.
In yet another embodiment, the radiation protective composition comprises, in parts by weight, 5 to 20 parts aluminum oxide, 5 to 20 parts lanthanum oxide, and 20 to 60 parts tantalum pentoxide. Alternatively, the weight part of aluminum oxide may be 10 parts, 12 parts, or 15 parts, the weight part of lanthanum oxide may be 10 parts, 12 parts, or 15 parts, and the weight part of tantalum pentoxide may be 30 parts, 40 parts, 45 parts, 50 parts, or 55 parts.
In yet another embodiment, the radiation protective composition comprises, in parts by weight, 5 to 20 parts aluminum oxide, 5 to 20 parts lanthanum oxide, 20 to 35 parts bismuth oxide, and 15 to 35 parts tantalum pentoxide. Alternatively, the weight part of aluminum oxide may be 10 parts, 12 parts or 15 parts, the weight part of lanthanum oxide may be 10 parts, 12 parts or 15 parts, the weight part of bismuth oxide may be 25 parts, 30 parts or 32 parts, and the weight part of tantalum pentoxide may be 25 parts, 30 parts or 32 parts.
Embodiments of the present invention also provide a radiation protective material comprising any of the radiation protective compositions described above, optionally further comprising a substrate, preferably an elastomeric material, which may be selected from rubber, thermoplastic polymers or fabrics, as examples, preferably rubber. The radiation protective composition is doped into or bonded to the substrate, for example, by melting, hot pressing, cold pressing, calendaring, stretching, granulating, injection molding, extrusion, spraying, and the like, to mix the radiation protective composition with the substrate to form a radiation protective material that can be used to make a radiation protective article. The radiation protection material comprises 15-50 parts of base material and 50-90 parts of radiation protection composition in parts by weight. Alternatively, the weight parts of the substrate in the radiation protective material may be 25 parts, 30 parts, 35 parts, or 45 parts, and the weight parts of the radiation protective composition may be 65 parts, 70 parts, 75 parts, or 85 parts.
Wherein the rubber can be natural rubber or synthetic rubber, preferably natural rubber, and one or more additives such as cross-linking agent, activating agent, anti-aging agent, stabilizer, colorant and the like which are commonly used in the art can be added into the rubber, and the radiation protection composition is doped into the rubber to form a radiation protection material. As examples, the synthetic rubber is selected from, for example, acrylic rubber, chlorosulfonated polyethylene rubber, nitrile rubber, isoprene rubber, ethylene propylene rubber, acrylonitrile rubber, chloroprene rubber, polyurethane rubber, silicone rubber, fluororubber, polyisobutylene rubber.
The thermoplastic polymer is a thermoplastic polymeric material well known to those skilled in the art, and one or more of the additives commonly used in the art, such as adjuvants, stabilizers, colorants, etc., may be added to the thermoplastic polymer, and the radiation protective composition is doped into the thermoplastic polymer to form a radiation protective material. By way of example, the thermoplastic polymer is selected from polyethylene, polypropylene, polyamide, polyvinylchloride, polystyrene, polyvinyl alcohol, polyester, for example.
The fabric may be a textile formed from natural fibres, synthetic fibres, for example woven from one or more of nylon, polyester, polyurethane, polyolefin. The radiation protective composition is sprayed onto the fabric or otherwise bonded to the fabric by dipping to form a radiation protective material.
The radiation protection material disclosed by the invention not only has better radiation protection performance, but also has better comfort, wearing convenience, safety and accuracy in operation, and is particularly suitable for people affected by radiation, such as medical staff participating in radiotherapy and nuclear medicine. The product of the invention has low manufacturing cost and is beneficial to popularization.
Example 1
The radiation protection material of the present embodiment includes, in parts by weight:
21 parts of rubber;
5 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 450nm;
75 parts of tantalum pentoxide with an average particle size of about 300nm.
Example 2
The radiation protection material of the present embodiment includes, in parts by weight:
36 parts of rubber;
15 parts of lanthanum oxide, the average particle size of the lanthanum oxide being about 500nm;
55 parts of tantalum pentoxide with an average particle size of about 400nm.
Example 3
The radiation protection material of the present embodiment includes, in parts by weight:
30 parts of rubber;
10 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 500nm;
60 parts of tantalum pentoxide with an average particle size of about 500nm.
Example 4
The radiation protection material of the present embodiment includes, in parts by weight:
30 parts of rubber;
5 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 450nm;
64.5 parts of tantalum pentoxide having an average particle diameter of about 450nm;
0.5 part of fullerol, the hydroxyl number of the fullerol being 10.
Example 5
The radiation protection material of the present embodiment includes, in parts by weight:
20 parts of rubber;
10 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 450nm;
35 parts of tantalum pentoxide with an average particle size of about 400nm;
35 parts of tungsten trioxide having an average particle size of about 350nm.
Example 6
The radiation protection material of the present embodiment includes, in parts by weight:
30 parts of rubber;
5 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 350nm;
40 parts of tantalum pentoxide with an average particle size of about 400nm;
24 parts of tungsten trioxide, wherein the average particle size of the tungsten trioxide is about 500nm;
1 part of fullerol, the hydroxyl number of which is 20.
Example 7
The radiation protection material of the present embodiment includes, in parts by weight:
30 parts of rubber;
15 parts of lanthanum oxide, the average particle size of which is about 350nm;
10 parts of bismuth trioxide, wherein the average particle size of the bismuth trioxide is about 350nm;
15 parts of tantalum pentoxide with an average particle size of about 400nm;
30 parts of tungsten trioxide having an average particle size of about 400nm.
Example 8
The radiation protection material of the present embodiment includes, in parts by weight:
25 parts of rubber;
9 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 400nm;
15 parts of bismuth trioxide, the average particle size of which is about 450nm;
16 parts of tantalum pentoxide with an average particle size of about 350nm;
35 parts of tungsten trioxide, wherein the average particle size of the tungsten trioxide is about 400nm;
1 part of fullerol, the hydroxyl number of which is 20.
Example 9
The radiation protection material of the present embodiment includes, in parts by weight:
25 parts of rubber;
9 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 400nm;
15 parts of bismuth trioxide, the average particle size of which is about 450nm;
16 parts of tantalum pentoxide with an average particle size of about 350nm;
35 parts of tungsten trioxide, wherein the average particle size of the tungsten trioxide is about 400nm;
1 part of fullerol, the hydroxyl number of which is 10.
Example 10
The radiation protection material of the present embodiment includes, in parts by weight:
25 parts of rubber;
9 parts of lanthanum oxide, wherein the average particle size of the lanthanum oxide is about 400nm;
15 parts of bismuth trioxide, the average particle size of which is about 450nm;
16 parts of tantalum pentoxide with an average particle size of about 350nm;
35 parts of tungsten trioxide, wherein the average particle size of the tungsten trioxide is about 400nm;
1 part of fullerol, the hydroxyl number of which is 8.
Embodiments of the present invention also provide a radiation protective article comprising the radiation protective composition described above. The radiation protective article may be formed into a variety of shapes and structures as desired, and is particularly suitable for forming a radiation protective article having a degree of flexibility including, but not limited to, a glove, apron, knee pad, neck wrap, sleeve, garment, surgical drape, protective pad, shield, protective shell, protective container, bra, foot cover, protective film, or protective coating for radiation protection. The radiation protection product provided by the invention has the advantages of excellent radiation protection effect, light weight, comfort in wearing and the like.
It should be noted that, referring to fig. 1 and 2, the glove made by the embodiment with lanthanum oxide and/or tantalum pentoxide has small rough protrusions formed on the surface, and these small rough protrusions can generate enough friction force, which is beneficial for the user to wear the glove, and the held article is not easy to slip during perspiration or water dipping. The applicant has surprisingly found that by adjusting the composition and/or average particle size of lanthanum oxide, tantalum pentoxide, for example lanthanum oxide in the examples being about 450nm, and tungsten oxide having an average particle size of about 450nm, the small protrusions on the glove surface can be suitably sized, in particular the average surface roughness of the outer surface of the glove can be adjusted in the range of 2 μm to 9 μm, and that the glove according to the invention can be particularly adapted to be worn in interventional procedures by changing the composition and particle size of lanthanum oxide and/or tantalum pentoxide, in particular the average surface roughness of the glove in the range of 6 μm to 8 μm, and thereby adjusting the surface roughness and friction of the glove, the surface roughness of the glove produced being particularly suitable for wearing in interventional procedures without adding further procedures to change the surface roughness.
In other embodiments, the glove of the present invention may be split into two parts, a rough surface part 10 having a rough surface and a smooth surface part 20. Rough surface portion 10 is worn primarily on the palm and fingers, and smooth surface portion 20 is worn primarily on the portion other than the palm and fingers, such as the wrist. By adopting the mode, the glove wearing device is convenient for a user to wear, and is beneficial to various fine operations of the user after wearing the glove.
In still another embodiment, the glove of the present invention has a wearing opening 30, the wearing opening 30 and the palm connecting portion form a wristband portion 40 having a varying width, and the wristband portion 40 is gradually narrowed in width from the wearing opening 30 toward the palm. This design facilitates the donning of the glove by the user.
In particular, the width dimension of the wristband portion at its narrowest width is generally comparable to an adult wrist width. The widest width dimension of the wristband portion is generally one quarter to two thirds greater than the narrowest width. The design is not only beneficial for the user to wear the glove, but also is not easy to fall off when the user wears the glove to operate.
It should be noted that the inventors have found that when the radiation protective article is a rubber article, i.e. when the radiation protective article comprises a rubber and a radiation protective composition, such as a protective glove, the density of the rubber article has a large influence on the radiation protective properties of the radiation protective article, preferably the radiation protective articleHas a density of 2.5g/cm 3 ～5.0g/cm 3 Further, the radiation protective article has a density of 4.0g/cm 3 ～5.0g/cm 3 。
The radiation protection product, especially the glove for radiation protection, can be applied to the technical field affected by ionizing radiation, such as the interventional operation field and the nuclear medicine field, the glove can be manufactured by the known soaking technology, the thickness of the manufactured glove can be 0.08 mm-0.45 mm, and the thickness of the glove is preferably 0.1 mm-0.3 mm in order to achieve the flexibility, the mechanical property and the radiation protection performance of the glove.
The radiation protection materials of the embodiment 1 to the embodiment 10 are used for manufacturing gloves, and the manufacturing method comprises the following steps:
(1) Mixing the liquid rubber and the radiation protection composition, and stirring for about 1h at 45-50 ℃;
(2) Cooling the mixture obtained in the step (1) to room temperature (20-25 ℃), immersing the glove mold in the mixture for about 0.5h;
(3) After the impregnation is finished, baking the glove mould for 2 to 5 minutes at the temperature of between 110 and 120 ℃, soaking the mixture in the step (2) for 25 to 30 minutes, baking for 2 to 5 minutes at the temperature of between 110 and 120 ℃ and then drying for about 40 to 50 minutes;
(4) And (5) demolding to obtain the glove.
The thickness, the outer surface average surface roughness, the mechanical properties and the radiation attenuation properties of the corresponding glove of the above examples were examined, and the examination results are shown in tables 1 and 2. The thickness of the glove can be obtained by a conventional thickness detection method, the mechanical property of the glove is detected according to EN374 and EN455-2 test standards, and the radiation attenuation performance of the glove is detected by detecting the radiation attenuation shielding rate of the glove with corresponding thickness to X rays under the voltages of 60keV, 70keV, 80keV, 100keV and 120keV of an X-ray tube.
TABLE 1
As can be seen from the detection results of the mechanical properties of the glove in Table 1, the glove of the embodiment of the invention has better tensile strength and flexibility, the mechanical properties meet the requirements of ASTMD 3577-09 "rubber medical glove Standard Specification", and the glove is particularly suitable for occasions with higher requirements on the operation flexibility of the hands of a wearer, such as interventional operations. In particular, the glove containing fullerols has significantly superior flexibility, and in particular fullerols having a hydroxyl number of 10 to 20 have a significant effect on improving the flexibility of the glove.
The detection of the radiation protection effect of the glove corresponding to the above example is carried out in compliance with the specification of YY/T0481-2016 (radiation conditions for measurement of medical diagnostic X-ray apparatus) (IEC 61267:2005), and the data obtained by the detection are shown in Table 2.
TABLE 2
As can be seen from the radiation attenuation detection results of the glove in Table 2, the glove of the embodiment of the invention has obviously better radiation protection capability, can effectively shield X rays, and particularly has obvious shielding effect on X rays with the voltage of the X-ray tube in the range of 60 keV-80 keV. As can be seen from tables 1 and 2, the density was 4.0g/cm 3 ～5.0g/cm 3 The glove has better radiation shielding effect and simultaneously can give consideration to the flexibility and the ductility of the glove.
While embodiments of the present invention have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that changes, modifications, substitutions and alterations may be made therein by those of ordinary skill in the art without departing from the spirit and scope of the invention, all such changes being within the scope of the appended claims.
Claims (8)
1. The radiation protection composition is characterized by comprising, by weight, 5-20 parts of lanthanum oxide and 50-80 parts of a third metal oxide, wherein the third metal oxide comprises 10-50 parts of tantalum pentoxide, 10-50 parts of tungsten trioxide or 5-20 parts of bismuth trioxide and 10-50 parts of tungsten trioxide;
the radioprotective composition further comprises greater than 0, less than or equal to 2 parts by weight of fullerol;
the hydroxyl number of the fullerol is 8-24.
2. The radiation protection composition of claim 1, wherein the lanthanum oxide has an average particle size of 100nm to 500nm and the tantalum pentoxide has an average particle size of 100nm to 500nm.
3. The radiation protection composition of claim 1, wherein the average particle size of the bismuth trioxide is 100nm to 500nm and the average particle size of the tungsten trioxide is 100nm to 500nm.
4. A radiation protective material comprising a substrate selected from rubber, thermoplastic polymer or fabric and the radiation protective composition of any one of claims 1 to 3, wherein the radiation protective composition is incorporated into or bonded to the substrate.
5. The radiation protective material of claim 4, wherein the radiation protective material comprises, in parts by weight, 15 to 50 parts of the substrate and 50 to 90 parts of the radiation protective composition.
6. A radiation protective article comprising the radiation protective composition of any one of claims 1 to 3.
7. The radiation protection article of claim 6, wherein the radiation protection article is a glove for radiation protection, and wherein an outer surface of the glove has an average surface roughness of 6 μιη to 8 μιη.
8. The radiation protective article according to claim 6, wherein the radiation protective article comprises a rubber and the radiation protective composition according to any one of claims 1 to 3, the radiation protective article having a density of 4.0g/cm 3 ~5.0g/cm 3 。
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| CN2018115264759 | 2018-12-13 | ||
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| CN201811604422.4A Pending CN111403062A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811604413.5A Pending CN111403061A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811605522.9A Pending CN111403065A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811605541.1A Pending CN111403068A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811604427.7A Active CN111403063B (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811605553.4A Pending CN111403071A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811605523.3A Pending CN111403066A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811605546.4A Pending CN111403069A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
| CN201811604472.2A Pending CN111403064A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
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| CN201811604413.5A Pending CN111403061A (en) | 2018-12-13 | 2018-12-26 | Radiation protection composition, radiation protection material and radiation protection product |
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- 2018-12-26 CN CN201811605522.9A patent/CN111403065A/en active Pending
- 2018-12-26 CN CN201811605541.1A patent/CN111403068A/en active Pending
- 2018-12-26 CN CN201811604427.7A patent/CN111403063B/en active Active
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- 2018-12-26 CN CN201811605523.3A patent/CN111403066A/en active Pending
- 2018-12-26 CN CN201811605546.4A patent/CN111403069A/en active Pending
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| CN101805121A (en) * | 2009-02-13 | 2010-08-18 | 肖特公开股份有限公司 | The not no barium glass and the application thereof of saturating X-ray |
| CN102549057A (en) * | 2009-07-31 | 2012-07-04 | 阿海法核燃料公司 | Radiation-attenuating elastomer material, multi-layer glove for protection against ionising radiation and uses thereof |
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| CN111403071A (en) | 2020-07-10 |
| CN111403060A (en) | 2020-07-10 |
| CN111403067A (en) | 2020-07-10 |
| CN111403068A (en) | 2020-07-10 |
| CN111403064A (en) | 2020-07-10 |
| CN111403062A (en) | 2020-07-10 |
| CN111403066A (en) | 2020-07-10 |
| CN111403065A (en) | 2020-07-10 |
| CN111403063A (en) | 2020-07-10 |
| CN111403061A (en) | 2020-07-10 |
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