WO2005049713A1 - Radiation shielding material for protective clothing, such as aprons or the like - Google Patents
Radiation shielding material for protective clothing, such as aprons or the like Download PDFInfo
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- WO2005049713A1 WO2005049713A1 PCT/EP2004/012979 EP2004012979W WO2005049713A1 WO 2005049713 A1 WO2005049713 A1 WO 2005049713A1 EP 2004012979 W EP2004012979 W EP 2004012979W WO 2005049713 A1 WO2005049713 A1 WO 2005049713A1
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- radiation protection
- bismuth
- protection material
- radiation
- weight
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Classifications
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- 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
- G21F3/03—Aprons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0837—Bismuth
Definitions
- Radiation protection material for protective clothing such as aprons and. the like
- the invention relates to a lead-free radiation protection material for protective clothing, such as aprons and. Like., In which metallic or oxidic radiation absorption material is incorporated into an elastomer.
- DE 19955192 A1 discloses a process for producing a lead-free radiation protection material from a polymer, the polymer being a synthetic, thermoplastic, vulcanizable elastomer, into which a powder of a high atomic number metal or its compounds is incorporated as the radiation-absorbing material ,
- the polymer being natural rubber (NR) and / or polychloroprene (CR) and / or nitrile butadiene (NBR) and / or styrene butadiene rubber (SBR) and / or butadiene rubber (BR) and / or ethylene-propylene terpolymer (EPDM) and / or ethylene-propylene copolymer (EPM) and / or polyurethane (PUR) and / or isobutylene-isoprene rubber (CSM) and / or silicone rubber (VMQ and MQ) and / or ethylene-vinyl acetate rubber (EVA) and / or their blend
- the radiation-absorbing material is a metal with atomic numbers greater than 50 or its compounds, for example zinc, antimony, elements of the lathanoid series or elements of the actinoid series or their mixtures with a particle size distribution of 20 ⁇ m to 120 ⁇ m
- Additions to achieve a homogeneous distribution while avoiding agglomerations are further additions in the form of powdery additives, for example in the form of silicates. Sulphides or stereates, necessary. These additives act as fillers which reduce the flexibility of the elastomer and which limit the addition of the radiation-absorbing material.
- bismuth has such absorption properties. If metallic bismuth or a bismuth compound, such as bismuth oxide, is added in powder form to an elastomer or a plastomer alone and a flexible film is drawn therefrom as the starting material for radiation protection clothing, this has a through the lead Equally characterized absorption capacity for X-rays of an energy in the range from 30 kV to 150 kV, which is almost constant in this range.
- the addition of powdered bismuth / bismuth oxide is based on metallic bismuth - At about 70 to 90 percent by weight, the addition is advantageously in the range of 75 to 85 percent by weight, the rest being exclusively the elastomer or plastomer as material.
- the powder form of the additional material is advantageously set such that its grain size distribution is essentially below 10 ⁇ m. It is advantageous if the grain size spectrum is such that approximately 70 percent by weight of the particles are smaller than 5 ⁇ m. With this grain size spectrum, which is significantly shifted towards smaller grain sizes compared to the known grain size distribution, the production of a homogeneous distribution is possible without further additives. Since neither powdered bismuth nor powdered bismuth oxide tends to agglomerate, no agglomeration-preventing additives are required. It has been shown that coarser particles emerge from the surface when the film is pulled and cause surface disturbances which are noticeable during further processing. With the same additives, their distribution in the elastomer can also have gaps which cause undesired X-ray radiation - enable gear
- chlorinated elastomers such as, for example, polychloroprene (CR) or polyvinylchloride-nit ⁇ lbutadiene (NBR / PVC)
- CR polychloroprene
- NBR / PVC polyvinylchloride-nit ⁇ lbutadiene
Abstract
The invention relates to a lead-free radiation shielding material, for aprons or the like, wherein a radiation absorption material based on elements having an atomic number higher than 50 is integrated into an elastomer or a plastomer. The aim of the invention is to improve one such radiation shielding material such that it can be stretched to form a film, that the production thereof is technically possible and cost-effective, and that the lead equivalent characterising the absorption capacity remains constant over the energy range of the radiation between 40 kV and approximately 120 kV. To this end, the elastomer or plastomer of the radiation shielding material to be processed into a film, for radiation absorption, contains metallic bismuth or bismuth compounds as the only additive.
Description
Strahlenschutzmaterial für Schutzkleidung, wie Schürzen u. dgl . Radiation protection material for protective clothing such as aprons and. the like
Die Erfindung betrifft ein bleifreies Strahlenschutzmaterial für Schutzkleidung, wie Schürzen u. dgl., bei dem in ein Elastomer metallisches oder oxidisches Strahlungsabsorptionsmaterial eingearbeitet ist.The invention relates to a lead-free radiation protection material for protective clothing, such as aprons and. Like., In which metallic or oxidic radiation absorption material is incorporated into an elastomer.
Bisher wurden zur Herstellung von Schutzkleidung Strahlenschutzmaterial ien auf Basis Blei eingesetzt. In den letzten Jahren wird dieses Blei wegen seiner Eigenschaften als Schwermetall durch unterschiedliche andere Absorbermaterialien für Röntgenstrahlung ersetzt, wobei Kombinationen verschiedener Elemente mit der Ordnungszahl größer 50 eingesetzt werden. Aus DE 19955192 AI ist ein Verfahren zur Herstellung eines bleifreien Strahlenschutzmateri- als aus einem Polymer bekannt, wobei als Polymer ein synthetisches, thermoplastisches, vulkanisierbares Elastomer vorgesehen ist, in das als strah- lungsabsorbierendes Material ein Pulver eines Metalls hoher Ordnungszahl oder dessen Verbindungen eingearbeitet ist, wobei als Polymer Naturkautschuk (NR) und/oder Polychloropren (CR) und/oder Nitrilbutadien (NBR) und/oder Styrolbutadien Kautschuk (SBR) und/oder Butadien-Kautschuk (BR) und/oder Ethylen-Propylen-Terpolymerisat (EPDM) und/ oder Ethylen-Propylen-Copolymer (EPM) und/oder Polyurethan (PUR) und/oder Isobutylen-Isopren-Kautschuk (CSM) und/oder Silikon-Kautschuk (VMQ und MQ) und/oder Ethylen-Vinylacetat-Kaut- schuk (EVA) und/oder deren Verschnitte oder nicht vulkanisierbare Elastomere
wie Polypropylen (PP/EPDM) und/oder Styrol-Ethylen-Butylen-Styrol (SEBS) und/oder Polyvinylchloπd-Nitπlbutadien (NBR/PVC) und/oder Ethylen-Propy- len-Copolymer (EPM) und/oder deren Verschnitte vorgesehen istSo far, radiation protection materials based on lead have been used for the production of protective clothing. In recent years, because of its properties as a heavy metal, this lead has been replaced by various other absorber materials for X-rays, combinations of different elements with an atomic number greater than 50 being used. DE 19955192 A1 discloses a process for producing a lead-free radiation protection material from a polymer, the polymer being a synthetic, thermoplastic, vulcanizable elastomer, into which a powder of a high atomic number metal or its compounds is incorporated as the radiation-absorbing material , The polymer being natural rubber (NR) and / or polychloroprene (CR) and / or nitrile butadiene (NBR) and / or styrene butadiene rubber (SBR) and / or butadiene rubber (BR) and / or ethylene-propylene terpolymer (EPDM) and / or ethylene-propylene copolymer (EPM) and / or polyurethane (PUR) and / or isobutylene-isoprene rubber (CSM) and / or silicone rubber (VMQ and MQ) and / or ethylene-vinyl acetate rubber (EVA) and / or their blends or non-vulcanizable elastomers such as polypropylene (PP / EPDM) and / or styrene-ethylene-butylene-styrene (SEBS) and / or polyvinylchloride-nitπlbutadiene (NBR / PVC) and / or ethylene-propylene copolymer (EPM) and / or their blends is
Als strahl ungsabsorbierendes Material ist nach diesem Patent ein Metall mit Ordnungszahlen großer 50 oder dessen Verbindungen, beispielsweise Zink, Antimon, Elemente der Lathanoiden-Reihe oder Elemente der Actinoiden-Reihe oder deren Gemische mit einer Korngrößenverteilung von 20 μm bis 120 μm vorgesehen Um mit diesen Zusätzen eine homogene Verteilung unter Vermeidung von Agglomerationen zu erreichen, sind weitere Zusätze in Form von pulverformigen Zuschlagstoffen, beispielsweise in Form von Silikaten. Sulfiden oder Stereaten, notwendig, Diese Zusätze wirken als Füller, die die Flexibilität des Elastomers herabsetzen, und die den Zusatz des strahlungs- absorbierenden Materials begrenzen Das bisherige Problem solcher blei- freien Materialien ist, dass deren Strahlungsabsorptionsvermogen, bestimmt als Bleigleichwert bei Rontgenrohrenspannung großer 100 kV, erheblich abnehmen, gleiches gilt für Rontgenrohrenspannung im Bereich von 30 bis 60 kV Darüber hinaus können diese Materialien auch Absorptionslucken aufweisen Beides begrenzt den Einsatz solcher Materialien als StrahlenschutzmaterialAccording to this patent, the radiation-absorbing material is a metal with atomic numbers greater than 50 or its compounds, for example zinc, antimony, elements of the lathanoid series or elements of the actinoid series or their mixtures with a particle size distribution of 20 μm to 120 μm Additions to achieve a homogeneous distribution while avoiding agglomerations are further additions in the form of powdery additives, for example in the form of silicates. Sulphides or stereates, necessary. These additives act as fillers which reduce the flexibility of the elastomer and which limit the addition of the radiation-absorbing material. The problem with such lead-free materials to date has been that their radiation absorption capacity, determined as lead equivalent at X-ray tube tension greater than 100 kV, decrease significantly, the same applies to X-ray tube voltage in the range of 30 to 60 kV. In addition, these materials can also have absorption gaps. Both limit the use of such materials as radiation protection material
Somit stellt sich die Aufgabe ein bleifreies Strahlenschutzmaterial anzugeben, das zur Folie ziehbar ist, und dessen Herstellung technisch möglich und wirtschaftlich durchfuhrbar ist, wobei der das Absorptionsvermögen charakterisierende Blei-Gleichwert über den Energiebereich der Strahlung von etwa 40 kV bis etwa 120 kV konstant bleiben sollIt is therefore the task of specifying a lead-free radiation protection material which can be drawn into the film and whose production is technically possible and economically feasible, the lead equivalent characterizing the absorption capacity being intended to remain constant over the energy range of the radiation from approximately 40 kV to approximately 120 kV
Diese Aufgabenstellung wird nach dieser Erfindung durch die Merkmale des unabhängigen Anspruchs gelost, vorteilhafte Weiterbildungen und bevorzugte Ausfuhrungsformen beschreiben die UnteransprucheThis task is solved according to this invention by the features of the independent claim, advantageous further developments and preferred embodiments describe the subclaims
Es hat sich gezeigt, dass Bismut solche Absorptionseigenschaften aufweist Wird einem Elastomer oder auch einem Plastomer allein metallisches Bismut oder eine Bismutverbindung, etwa Bismutoxid, in Pulverform zugesetzt und daraus eine flexible Folie als Ausgangsmateπal für Strahlungsschutzklei- dung gezogen, hat dieses ein durch den Blei-Gleichwert charakterisiertes Absorptionsvermögen für Röntgenstrahlung einer Energie im Bereich von 30 kV bis 150 kV, das in diesem Bereich nahezu konstant ist Der Zusatz pulverformigen Bismuts/Bismutoxids liegt dabei - auf metallisches Bismut bezogen
- bei etwa 70 bis 90 Gewichtsprozent Vorteilhaft liegt der Zusatz im Bereich von 75 bis 85 Gewichtsprozent, der Rest ist dabei ausschließlich das Elastomer oder Plastomer als Matπxmateπal .It has been shown that bismuth has such absorption properties. If metallic bismuth or a bismuth compound, such as bismuth oxide, is added in powder form to an elastomer or a plastomer alone and a flexible film is drawn therefrom as the starting material for radiation protection clothing, this has a through the lead Equally characterized absorption capacity for X-rays of an energy in the range from 30 kV to 150 kV, which is almost constant in this range. The addition of powdered bismuth / bismuth oxide is based on metallic bismuth - At about 70 to 90 percent by weight, the addition is advantageously in the range of 75 to 85 percent by weight, the rest being exclusively the elastomer or plastomer as material.
Vorteilhaft wird die Pulverform des Zusatzmateπals so eingestellt, dass dessen Korngrößenverteilung im Wesentlichen unter 10 μm liegt Vorteilhaft ist es, wenn das Korngroßenspektrum derart ist, dass etwa 70 Gewichtsprozent der Teilchen kleiner als 5 μm sind. Mit diesem gegenüber der bekannten Korngrößenverteilung erheblich zu kleineren Korngroßen hin verschobenen Korngroßenspektrum wird die Herstellung einer homogenen Verteilung ohne weitere Zusätze möglich Da weder pulverformiges Bismut noch pulverformiges Bismutoxid zum Agglomerieren neigt, bedarf es auch keiner Agglomerationen verhindernder Zusätze. Es zeigte sich nämlich, dass gröbere Teilchen beim Ziehen der Folie an der Oberflache austreten und Oberflächen-Störungen verursachen, die sich bei der Weiterverarbeitung störend bemerkbar machen Bei gleichen Zusätzen können diese in ihrer Verteilung in dem Elastomer durchaus auch Lucken aufweisen, die einen unerwünschten Rontgenstrahlungsdurch- gang ermöglichenThe powder form of the additional material is advantageously set such that its grain size distribution is essentially below 10 μm. It is advantageous if the grain size spectrum is such that approximately 70 percent by weight of the particles are smaller than 5 μm. With this grain size spectrum, which is significantly shifted towards smaller grain sizes compared to the known grain size distribution, the production of a homogeneous distribution is possible without further additives. Since neither powdered bismuth nor powdered bismuth oxide tends to agglomerate, no agglomeration-preventing additives are required. It has been shown that coarser particles emerge from the surface when the film is pulled and cause surface disturbances which are noticeable during further processing. With the same additives, their distribution in the elastomer can also have gaps which cause undesired X-ray radiation - enable gear
Schließlich hat sich überraschender Weise gezeigt, dass Bismut und auch Bismutoxid vernetzungsfordernd sind Dies zeigt sich in einer Verbesserung der Alterungsbestandigkeit der Folie, da das Elastomer weniger zum Verspro- den neigt Diese Eigenschaft ist eine Folge davon, dass bei der Vulkanisation weniger Schwefelbrücken entstehen und somit die elastischen Struktur des elastoeren Materials erhöht wirdFinally, it has surprisingly been shown that bismuth and also bismuth oxide require crosslinking. This is shown by an improvement in the aging resistance of the film, since the elastomer is less prone to brittle. This property is a consequence of the fact that fewer sulfur bridges are formed during vulcanization and thus the elastic structure of the elastoeren material is increased
Bei Verwendung von chlorierten Elastomeren, wie beispielsweise Polychlo- ropren (CR) oder Polyvinylchloπd-Nitπlbutadien (NBR/PVC) hat es sich bewahrt, wenn kein metallisches Bismut eingesetzt wird, sondern Bismutoxid oder andere gegenüber Halogenen bestandige BismutverbindungenWhen using chlorinated elastomers, such as, for example, polychloroprene (CR) or polyvinylchloride-nitπlbutadiene (NBR / PVC), it has been found to be useful if no metallic bismuth is used, but bismuth oxide or other bismuth compounds which are resistant to halogens
In einer Ausfuhrungsform der Erfindung hat sich ein Aufbau bewahrt, bei dem eingesetzt sind- Bismut/Bismutoxid 70 - 90 Gewichtsprozent Bi Elastomer als Matrix 30 - 10 GewichtsprozentIn one embodiment of the invention, a structure has been retained in which bismuth / bismuth oxide 70-90 percent by weight Bi elastomer as matrix 30-10 percent by weight are used
In einer vorteilhaften Weiterbildung hat sich der im Folgenden beschriebeneIn an advantageous development, the one described below has been developed
Aufbau bewahrt- Bismut/Bismutoxid 80 - 90 Gewichtsprozent Bi Elastomer als Matrix 20 - 10 Gewichtsprozent
In einer bevorzugten Ausführungsform der Erfindung hat sich der nachstehend beschriebene Aufbau bewährt: Bismut/Bismutoxid 85 - 90 Gewichtsprozent Bi Elastomer als Matrix 15 - 10 Gewichtsprozent Hiermit wird im Bereich von Röhrenspannungen von 30 bis 150 kV - in Abhängigkeit von der Stärke der Folie - ein Bleigleichwert von 0,1 bis 1.0 mm Pb erreicht.
Structure preserved - bismuth / bismuth oxide 80 - 90 percent by weight Bi elastomer as a matrix 20 - 10 percent by weight In a preferred embodiment of the invention, the structure described below has proven itself: bismuth / bismuth oxide 85-90% by weight Bi elastomer as a matrix 15-10% by weight This is used in the range of tube voltages from 30 to 150 kV, depending on the thickness of the film Lead equivalent of 0.1 to 1.0 mm Pb reached.
Claims
1. Bleifreies Strahlenschutzmaterial für Schutzkleidung, wie Schurzen u dgl , bei dem in ein Elastomer oder ein Plastomer Strahlungsabsorpti- onsmateπal auf der Basis von Elementen mit einer Ordnungszahl großer 50 eingearbeitet ist, dadurch gekennzeichnet, dass das Elastomer bzw das Plastomer des zur Folie weiter zu verarbeitenden Strahlenschutzmatenals zur Strahlungsabsorption als einzigen Zusatz metallisches Bismut oder Bismutverbindungen enthalt1. Lead-free radiation protection material for protective clothing, such as aprons and the like, in which radiation absorption material is incorporated into an elastomer or a plastomer on the basis of elements with an atomic number greater than 50, characterized in that the elastomer or the plastomer continues to form the film processing radiation protection material as the only additive contains metallic bismuth or bismuth compounds
2 Strahlenschutzmaterial nach Anspruch 1, insbesondere beim Einsatz halogemerter Elastomere bzw Plastomere als Matπxmateπal , dadurch gekennzeichnet, dass als Bismutverbindung Bismutoxid vorgesehen ist.2 radiation protection material according to claim 1, in particular when using halogenated elastomers or plastomers as Matπxmateπal, characterized in that bismuth oxide is provided as bismuth compound.
3 Strahlenschutzmaterial nach Anspruch 1 oder 2, gekennzeichnet durch einen Anteil von 70 Gewft bis 90 Gewü! Bismut in 30 Gew2 bis 10 Gew^ elastomeres oder plastomeres Matπxmateπal .3 radiation protection material according to claim 1 or 2, characterized by a proportion of 70 Gewft to 90 Gewü! Bismuth in 30 Gew2 to 10 Gew ^ elastomeres or plastomeres Matπxmateπal.
4 Strahlenschutzmaterial nach Anspruch 3, gekennzeichnet durch einen Anteil von 75 bis 85 Gevι% Bismut in 25 Gevj% bis 15 Gevj% elastomeres oder plastomeres Matπxmateπal , vorzugsweise 80 bis 85 Gew& Bismut in 20 Gewft bis 15 Gevι% elastomeres oder plastomeres Matπxmateπal .4 radiation protection material according to claim 3, characterized by a proportion of 75 to 85% by weight of bismuth in 25% by weight to 15% by weight of elastomeric or plastomeric material, preferably 80 to 85% by weight of bismuth in 20% by weight of 15% by weight of elastomeric or plastomeric material.
5. Strahlenschutzmaterial nach einem der Ansprüche 1 bis 4. dadurch gekennzeichnet, dass das eingesetzte pulverformige Bismut bzw Bismutoxid ein Korngroßenspektrum aufweist, mit mindestens einem Anteil von 70 Gew£ Teilchen mit einer Korngroße < 8 μm. vorzugsweise < 4 μm.5. Radiation protection material according to one of claims 1 to 4, characterized in that the powdered bismuth or bismuth oxide used has a grain size spectrum, with at least a proportion of 70 pounds of particles with a grain size <8 microns. preferably <4 μm.
6 Strahlenschutzmaterial nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass als Matπxmateπal thermoplastische Elastomere oder Plastomere, wie beispielsweise Naturkautschuk (NR) und/oder Styrolbuta- dienkautschuk (SBR) und/ oder Nitπlbutadienkautschuk (NBR) und/oder Butadienkautschuk (BR) und/oder Ethylen/Propylen-Terpolym (EPDM) und/oder Ethylen-Propylen-Copolyer (EPM) und/oder Polyurethan (PUR) und/oder Polyisoprenkautschuk (IR) und/oder Isobutylen-Isoprenkautschuk (IIR) und/oder Silikon-Kautschuk (VMQ u. MQ) und/oder Ethylen-Vinylace- tat (EVA) und/oder deren Verschnitte und/oder aus einem nicht vulkanisierbarem Elastomer wie PP/ EPDM und/oder SEBS und/oder NBR und/oder deren Verschnitte vorgesehen sind.6 radiation protection material according to one of claims 1 to 5, characterized in that as Matπxmateπal thermoplastic elastomers or plastomers, such as natural rubber (NR) and / or styrene-butadiene rubber (SBR) and / or nitπlbutadiene rubber (NBR) and / or butadiene rubber (BR) and / or ethylene / propylene terpolym (EPDM) and / or ethylene-propylene copolyer (EPM) and / or polyurethane (PUR) and / or polyisoprene rubber (IR) and / or isobutylene-isoprene rubber (IIR) and / or silicone Rubber (VMQ and MQ) and / or ethylene vinyllace tat (EVA) and / or their blends and / or a non-vulcanizable elastomer such as PP / EPDM and / or SEBS and / or NBR and / or their blends are provided.
7. Strahlenschutzmaterial nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Matrixmaterial aus halogenhaltigen, thermoplastischen Elastomeren oder Piastomeren, wie beispielsweise Polychloroprene (CR) und/oder und/oder chlorsulforiertes Polyäthylen (CSM) und/ oder deren Verschnitte und/oder aus einem nicht vulkanisierbarem Elastomer PVC und/oder deren Verschnitte besteht.7. Radiation protection material according to one of claims 1 to 5, characterized in that the matrix material made of halogen-containing, thermoplastic elastomers or plastomers, such as polychloroprene (CR) and / or and / or chlorosulforated polyethylene (CSM) and / or their blends and / or consists of a non-vulcanizable elastomer PVC and / or their blends.
8. Strahlenschutzfolie aus dem Strahlenschutzmaterial nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zur Strahlungsabsorption an die aus diesem Strahlenschutzmaterial gezogene Folie eine weitere Folie aus einem (an sich bekannten bleifreien) Strahlenschutzmaterial mit einer Kombination einiger Elemente der Ordnungszahl größer 50 angesetzt ist. 8. Radiation protection film made of the radiation protection material according to one of claims 1 to 7, characterized in that a further film made of a (known lead-free) radiation protection material with a combination of some elements of atomic number greater than 50 is attached to the radiation drawn from this radiation protection material ,
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10353917 | 2003-11-18 | ||
| DE10353917.4 | 2003-11-18 |
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| WO2005049713A1 true WO2005049713A1 (en) | 2005-06-02 |
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|---|---|---|---|
| PCT/EP2004/012979 WO2005049713A1 (en) | 2003-11-18 | 2004-11-16 | Radiation shielding material for protective clothing, such as aprons or the like |
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| US20110165373A1 (en) * | 2010-01-07 | 2011-07-07 | BIoXR, LLC | Radio-opaque films of laminate construction |
| US8754389B2 (en) | 2010-01-07 | 2014-06-17 | Bloxr Corporation | Apparatuses and methods employing multiple layers for attenuating ionizing radiation |
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| CN110317359A (en) * | 2019-07-15 | 2019-10-11 | 南通大学 | A kind of unleaded lightweight X, gamma-rays protective materials and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110165373A1 (en) * | 2010-01-07 | 2011-07-07 | BIoXR, LLC | Radio-opaque films of laminate construction |
| US8754389B2 (en) | 2010-01-07 | 2014-06-17 | Bloxr Corporation | Apparatuses and methods employing multiple layers for attenuating ionizing radiation |
| US8993989B1 (en) | 2010-01-07 | 2015-03-31 | Bloxr Solutions, Llc | Apparatuses and methods employing multiple layers for attenuating ionizing radiation |
| US9114121B2 (en) | 2010-01-07 | 2015-08-25 | Bloxr Solutions, Llc | Radiation protection system |
| US9452115B2 (en) | 2010-01-07 | 2016-09-27 | Bloxr Solutions, Llc | Radiation protection system |
| CN110317359A (en) * | 2019-07-15 | 2019-10-11 | 南通大学 | A kind of unleaded lightweight X, gamma-rays protective materials and preparation method thereof |
| CN110317359B (en) * | 2019-07-15 | 2022-01-04 | 南通大学 | Lead-free light X-ray and gamma-ray protection material and preparation method thereof |
| CN113462039A (en) * | 2021-08-10 | 2021-10-01 | 湖南金泰铋业股份有限公司 | Preparation method and product of bismuth-based radiation shielding flexible protective material |
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