EP2058821A1 - Cast mineral composite that absorbs x-rays - Google Patents

Cast mineral composite that absorbs x-rays Download PDF

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Publication number
EP2058821A1
EP2058821A1 EP07021908A EP07021908A EP2058821A1 EP 2058821 A1 EP2058821 A1 EP 2058821A1 EP 07021908 A EP07021908 A EP 07021908A EP 07021908 A EP07021908 A EP 07021908A EP 2058821 A1 EP2058821 A1 EP 2058821A1
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EP
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Prior art keywords
component
mineral casting
casting according
mineral
weight
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EP07021908A
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German (de)
French (fr)
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EP2058821B1 (en
Inventor
Mirjana Sekanic
Sascha Kockoth
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Epucret Mineralgusstechnik & Co KG GmbH
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Epucret Mineralgusstechnik & Co KG GmbH
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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
    • G21F1/00—Shielding characterised by the composition of the materials
    • G21F1/02—Selection of uniform shielding materials
    • G21F1/04—Concretes; Other hydraulic hardening materials
    • G21F1/042—Concretes combined with other materials dispersed in the carrier

Definitions

  • the invention relates to an X-ray absorbing mineral casting.
  • various materials for shielding radiation are used according to the prior art. These include mainly the materials listed in DIN 54113 such as lead, barite concrete etc.
  • the housings in industrial, electronic and medical X-ray diagnostics are mainly made in sandwich construction, e.g. made of steel / lead / steel or similar materials, which are integrated, for example, in an additional steel frame and joined together.
  • sandwich construction e.g. made of steel / lead / steel or similar materials, which are integrated, for example, in an additional steel frame and joined together.
  • Additional scaffolds for the radiation source, slide, manipulator and detector are necessary and must be additionally integrated.
  • Stiff constructions as in patent DE 36 170 91 A1 are often performed with steel reinforcements and must be additionally lined with lead in order to obtain the desired radiation protection.
  • a polymer-based system that cures at room temperatures and can be cast in situ is used in DD 27 11 93 A1 described, but fillers ⁇ 83 ⁇ are used here, which often have an insufficient inherent rigidity as a construction material together with the binder system.
  • the invention has for its object to provide a castable construction material with sufficient inherent rigidity and radiation protection function, which allows an integrative construction design. Furthermore, it is desirable that a construction material that is easy to manufacture and attach to be provided with a radiation protection function and that lead can be dispensed with as a radiation protection material. Furthermore, in connection with ever faster analysis methods and thus higher speeds at which the components to be tested pass through the diagnostic equipment, the vibrations caused thereby are to be damped.
  • the object of the invention is achieved by a mineral casting with a first component which comprises at least one resin, with a proportion of 0.1 to 15 wt .-%, with a second component having at least one hardener, with an Antell of 0, 1 to 15 wt .-%, and with a third component having at least one filler, in a proportion of 50 to 99 wt .-%, wherein the third component comprises at least one X-ray absorbing material.
  • the grit can be finer to coarse.
  • the advantage here is that this material has a sufficient radiation protection function and has an optimized mass / absorption ratio. It is also advantageous that the invention provides an alternative material which allows the substitution of lead under certain structural conditions. The invention furthermore has very good properties for the production of intrinsically rigid radiation protection components and components. In addition, it has been shown that under certain conditions, the construction material according to the invention mineral casting can be used as an electrical insulator with radiation protection function and as a vibration-damping and / or noise-damping construction material with radiation protection function.
  • the first component has a proportion of 1 to 10%, preferably 5 to 8%, and that it is preferable that the resin of the first component is a PUR, epoxy, polyester, vinyl ester , and / or a methacrylate resin. is.
  • the second component has a proportion of 0.5 to 10%, preferably 1 to 5% and that it is preferably in the curing agent of the second component is an isocyanate, anhydride, amine and / or Polyamine acts.
  • either the first, second or third component has a wetting agent. This improves the bond and adhesion to the matrix-forming material.
  • a further teaching of the invention provides that the third component has a proportion of 60 to 97%, preferably 85 to 95%.
  • a component of the third component is preferably quartz, basalt, granite, diabase, chalk and / or a thixotropic agent. The aggregates increase the mechanical strength of the mineral casting. The thixotropic agent ensures that the substances of the third component remain evenly distributed throughout the material
  • the X-ray absorbing material hematite (Fe 2 O 3 ), baryta (BaSO 4 ), bismuth (Bi), lead (Pb) and / or magnetite (Fe 3 O 4 ), wherein Barite or hematite are particularly preferred.
  • the absorbent material has a particle size range of 0 to 32 mm, preferably 0 to 16 mm. This particle size has a positive effect on the radiation protection property and the Elgenstelfmaschine of the material according to the invention.
  • preferred embodiments provide that the absorbent material has a particle size range of 0 to 5 mm, preferably 0 to 2 mm.
  • the hematite or barite has a further particle size spectrum of 0 to 500 ⁇ m, preferably 0 to 100 ⁇ m.
  • This Feinstkornfrtress forms in connection with the Polymer of the first and second component of the matrix of mineral casting and increases the radiation absorption capacity by an improved packing density.
  • the invention relates to the use of the previously described mineral casting according to the invention for the production of X-ray absorbing internal components, preferably wall-ceiling floor elements and closure systems for radiation protection or linear acceleration bunkers, racks and / or components for X-ray inspection systems such as diagnostic equipment and X-ray equipment for the fields of medicine , Sensors, electronics, materials and natural sciences as well as industry.
  • X-ray absorbing components preferably wall-ceiling floor elements and closure systems for radiation protection or linear acceleration bunkers, racks and / or components for X-ray inspection systems such as diagnostic equipment and X-ray equipment for the fields of medicine , Sensors, electronics, materials and natural sciences as well as industry.
  • Another application is the filling of X-ray absorbing components in lost forms, e.g. Steel welded constructions, different plastic forms etc.
  • a first embodiment according to the invention of the mineral casting according to the invention has as the first component a PUR resin with a wetting agent with a total of 2 to 5% by weight.
  • a PUR resin with a wetting agent with a total of 2 to 5% by weight As the second component, an isocyanate hardener with a total of 2 to 5% by weight is used.
  • the third component consists of a first Hämatitfr neglect with a particle size range of 0.1 to 6 mm and a weight fraction of 70-80% by weight and from a second hematite fraction as matrix images with a particle size range of 0 to 100 microns and a weight fraction of 10-15 % by weight. Furthermore, a thixotropic agent is added.
  • a second embodiment according to the invention of the mineral casting according to the invention has as an initial component an epoxy resin with a Wetting agent with a total of 6 to 9% by weight.
  • an epoxy resin hardener 1 to 4% by weight is used as the second component.
  • the third component consists of a first Hämatitfr neglect with a particle size range of 0.1 to 6 mm and a weight fraction of 30-50 wt% and from a second hematite fraction as matrix images with a particle size range of 0 to 100 microns and a weight fraction of 5-15 % by weight.
  • a thixotropic agent is added.
  • quartz and a igneous rock such as rhyolite having a grain size range of 5 to 16 mm are added at a weight ratio of 30 to 50% by weight.
  • a third embodiment of the mineral casting according to the invention has as its first component an epoxy resin with a wetting agent with a total of 6 to 9% by weight.
  • an epoxy resin hardener 1 to 4% by weight is used as the second component.
  • the third component consists of a first barite fraction having a particle size range from 0 to 16 mm and a weight fraction of 60 to 85% by weight and a second baryta fraction as matrix images having a particle size range from 0 to 100 ⁇ m and a weight fraction of 5-15% by weight. %.
  • a hematite fraction with 0 to 15% by weight is provided with a particle size range of 0 to 6 mm.
  • a thixotropic agent is added.
  • a fourth embodiment according to the invention of the mineral casting according to the invention has as the first component an epoxy resin with a wetting agent with a total of 6 to 9% by weight.
  • an epoxy resin hardener 1 to 4% by weight is used as the second component.
  • the third component consists of a first baryte fraction having a particle size range of 0 to 16 mm and a weight fraction of 40 to 85% by weight and a second baryta fraction as matrix images having a particle size range of 0 to 100 ⁇ m and a weight fraction of 5-15% by weight. %.
  • a thixotropic agent is added.
  • quartz and a igneous rock having a grain size range of 5 to 16 mm are added at a weight fraction of 30 to 60% by weight.

Abstract

Mineral casting comprises a component, which has 0.1-15 wt.% of a resin. Another component is also provided, which has 0.1-15 wt.% of a hardener. A third component is additionally provided, which has 50-99 wt.% of a filler material. The third component also has X-ray absorbing material.

Description

Die Erfindung betrifft einen Röntgenstrahlung absorbierenden Mineralguss.The invention relates to an X-ray absorbing mineral casting.

Zur Abschirmung von Röntgenstrahlung werden gemäß Stand der Technik verschiedene Materialien zur Abschirmung von Strahlung eingesetzt. Darunter befinden sich hauptsächlich die in der DIN 54113 genannten Werkstoffe wie Blei, Barytbeton etc..For shielding from X-radiation, various materials for shielding radiation are used according to the prior art. These include mainly the materials listed in DIN 54113 such as lead, barite concrete etc.

Derzeit werden die Gehäuse in der industriellen, elektronischen und medizinischen Röntgendiagnostik hauptsächlich in Sandwichbauweise wie z.B. aus Stahl/Blei/Stahl oder ähnlichen Materialien gefertigt, die beispielsweise in einem zusätzlichen Stahlrahmen integriert sind und zusammengefügt werden. Verbesserungsbedarf besteht hierbei hinsichtlich fehlender Passgenauigkeit der einzelnen Bauteile zueinander, die mit nachträglichem Bleieintrag abgedichtet werden müssen. Zusätzliche Gerüste für Strahlenquelle, Objektträger, Manipulator und Detektor sind nötig und müssen zusätzlich integriert werden.At present, the housings in industrial, electronic and medical X-ray diagnostics are mainly made in sandwich construction, e.g. made of steel / lead / steel or similar materials, which are integrated, for example, in an additional steel frame and joined together. There is a need for improvement with regard to the lack of accuracy of fit of the individual components to one another, which must be sealed with subsequent lead entry. Additional scaffolds for the radiation source, slide, manipulator and detector are necessary and must be additionally integrated.

Die Hauptanwendungen mit Hämatit, Magnetit und Baryt sind im Bereich des Betonbaus zur Abschirmung von Strahlungen zu finden. Die Fertigung von Strahlenschutzwänden/-böden oder Füllungen wie in DE 103 14 855 A1 beschrieben basieren auf der Verfestigung mit herkömmlichen Zement und Wasser. Hier ist das Verhältnis der Masse zur Absorption relativ groß.The main applications with hematite, magnetite and barite are in the field of concrete construction to shield radiation. The production of radiation protection walls / floors or fillings as in DE 103 14 855 A1 described based on the solidification with conventional cement and water. Here the ratio of mass to absorption is relatively large.

Eigensteife Konstruktionen wie in Patentschrift DE 36 170 91 A1 werden oft mit Stahlarmierungen ausgeführt und müssen im Nachhinein noch mit Blei zusätzlich ausgekleidet werden um den gewünschten Strahlenschutz zu erhalten.Stiff constructions as in patent DE 36 170 91 A1 are often performed with steel reinforcements and must be additionally lined with lead in order to obtain the desired radiation protection.

Ein System auf Polymerbasis das bei Raumtemperaturen aushärtet und vor Ort vergossen werden kann, wird in DD 27 11 93 A1 beschrieben, jedoch werden hier Füllstoffe < 83µ verwendet, die zusammen mit dem Bindersystem oft eine unzureichende Eigensteifigkeit als Konstruktionswerkstoff aufweisen.A polymer-based system that cures at room temperatures and can be cast in situ is used in DD 27 11 93 A1 described, but fillers <83μ are used here, which often have an insufficient inherent rigidity as a construction material together with the binder system.

Die oben genannten Werkstoffe besitzen den Nachteil, dass diese nicht die nötigen Festigkeiten für eine eigene Konstruktion aufbringen oder das das Verhältnis der Masse zur Absorption relativ groß ist.The above materials have the disadvantage that they do not provide the necessary strength for their own design or that the ratio of mass to absorption is relatively large.

Der Erfindung liegt die Aufgabe zugrunde, einen gießbaren Konstruktionswerkstoff mit genügend Eigensteifigkeit und Strahlenschutzfunktion bereitzustellen, der eine integrative Konstruktionsbauweise zulässt. Weiterhin ist angestrebt, dass ein einfach herzustellender und zu fügender Konstruktionswerkstoff mit Strahlenschutzfunktion bereitgestellt wird und auf Blei als Strahlenschutzwerkstoff verzichtet werden kann. Weiterhin soll im Zusammenhang mit immer schnelleren Analysenmethoden und den damit höheren Geschwindigkeiten, mit denen die zu prüfenden Bauteile die Diagnosegeräte durchlaufen, die dabei verursachten Schwingungen gedämpft werden.The invention has for its object to provide a castable construction material with sufficient inherent rigidity and radiation protection function, which allows an integrative construction design. Furthermore, it is desirable that a construction material that is easy to manufacture and attach to be provided with a radiation protection function and that lead can be dispensed with as a radiation protection material. Furthermore, in connection with ever faster analysis methods and thus higher speeds at which the components to be tested pass through the diagnostic equipment, the vibrations caused thereby are to be damped.

Gelöst wird die erfindungsgemäße Aufgabe durch einen Mineralguss mit einer ersten Komponente, die wenigstens ein Harz aufweist, mit einem Anteil von 0,1 bis 15 Gew.-%, mit einer zweiten Komponente, die wenigstens einen Härter aufweist, mit einem Antell von 0,1 bis 15 Gew.-%, und mit einer dritten Komponente, die wenigstens einen Füllstoff aufweist, mit einem Anteil von 50 bis 99 Gew.-%, wobei die dritte Komponente mindestens einen Röntgenstrahlen absorbierenden Stoff aufweist. Die Körnung kann feiner bis grob sein.The object of the invention is achieved by a mineral casting with a first component which comprises at least one resin, with a proportion of 0.1 to 15 wt .-%, with a second component having at least one hardener, with an Antell of 0, 1 to 15 wt .-%, and with a third component having at least one filler, in a proportion of 50 to 99 wt .-%, wherein the third component comprises at least one X-ray absorbing material. The grit can be finer to coarse.

Vorteilhaft dabei ist, dass dieser Werkstoff eine hinreichende Strahlenschutzfunktion aufweist und ein optimiertes Masse/Absorptionsverhältnis besitzt. Vorteilhaft ist auch, dass die Erfindung einen alternativen Werkstoff aufgezeigt, der die Substitution von Blei unter gewissen konstruktiven Bedingungen ermöglicht. Die Erfindung weist weiterhin sehr gute Eigenschaften zur Herstellung von eigensteifen Strahlenschutzbauteilen und -komponenten auf. Darüber hinaus hat sich gezeigt, dass unter bestimmten Voraussetzungen der erfindungsgemäße Konstruktionswerkstoff Mineralguss als elektrischer Isolator mit Strahlenschutzfunktion und als schwingungsdämpfender und/oder lärmdämpfender Konstruktionswerkstoff mit Strahlenschutzfunktion einsetzbar ist.The advantage here is that this material has a sufficient radiation protection function and has an optimized mass / absorption ratio. It is also advantageous that the invention provides an alternative material which allows the substitution of lead under certain structural conditions. The invention furthermore has very good properties for the production of intrinsically rigid radiation protection components and components. In addition, it has been shown that under certain conditions, the construction material according to the invention mineral casting can be used as an electrical insulator with radiation protection function and as a vibration-damping and / or noise-damping construction material with radiation protection function.

Vorteilhaft ist es weiterhin, eigensteife Werkstücke in einem Guss herstellen, wobei die Herstellung kalt- oder heißhärtend erfolgen kann. Durch diese Möglichkeit des Herstellungsverfahrens in einem Guss reduzieren sich evt. Monatagearbeiten aber vor allem werden möglich Undichtigkeitsstellen durch den Wegfall des Zusammenfügens von Einzelbauteilen minimiert. Weiterhin ist ein Verguss vor Ort möglich. Die Werkstücke aus dem hergestellten erfindungsgemäßen Material sind ohne weiteres einfach mechanisch bearbeitbar.It is also advantageous to produce intrinsically rigid workpieces in one casting, wherein the production can be carried out cold or hot curing. This possibility of the production process in one pour may reduce monthly work, but above all possible leakage points are minimized by eliminating the joining of individual components. Furthermore, a casting on site is possible. The workpieces of the produced material according to the invention are easily machined easily.

Weitere vorteilhafte Ausführungsformen sind in den Unteransprüchen dargestellt.Further advantageous embodiments are shown in the subclaims.

Eine vortellhalte Lösung der Erfindung sieht vor, dass die erste Komponente einen Anteil von 1 bis 10 %, bevorzugt 5 bis 8 % aufweist und dass es sich bevorzugt bei dem Harz der ersten Komponente um ein PUR-, Epoxid-, Polyester-, Vinylester-, und/oder ein Methacrylatharz. handelt.An advantageous solution of the invention provides that the first component has a proportion of 1 to 10%, preferably 5 to 8%, and that it is preferable that the resin of the first component is a PUR, epoxy, polyester, vinyl ester , and / or a methacrylate resin. is.

Weiterhin ist es eine vorteilhafte Lehre der Erfindung, dass die zweite Komponente einen Anteil von 0,5 bis 10 %, bevorzugt 1 bis 5 % aufweist und dass es sich bevorzugt bei dem Härter der zweiten Komponente um ein Isocyanat, Anhydrid, Amin und/oder Polyamin handelt.Furthermore, it is an advantageous teaching of the invention that the second component has a proportion of 0.5 to 10%, preferably 1 to 5% and that it is preferably in the curing agent of the second component is an isocyanate, anhydride, amine and / or Polyamine acts.

Weiterhin ist vorteilhaft, dass entweder die erste, zweite oder dritte Komponente ein Benetzungsmittel aufweist. Dadurch wird der Verbund und die Anhaftung mit dem Matrixbildenden Material verbessert.Furthermore, it is advantageous that either the first, second or third component has a wetting agent. This improves the bond and adhesion to the matrix-forming material.

Eine weitere Lehre der Erfindung sieht vor, dass die dritte Komponente einen Anteil von 60 bis 97 %, bevorzugt 85 bis 95 % aufweist. Ein Bestandteil der dritten Komponente ist bevorzugt Quarz, Basalt, Granit, Diabas, Kreide und/oder ein Thixotropierungsmittel. Mit den Aggregaten wird die mechanische Festigkeit des Mineralgusses erhöht. Das Thixotropierungsmittel sorgt dafür, dass die Stoffe der dritten Komponente gleichmäßig im Werkstoff verteilt bleibenA further teaching of the invention provides that the third component has a proportion of 60 to 97%, preferably 85 to 95%. A component of the third component is preferably quartz, basalt, granite, diabase, chalk and / or a thixotropic agent. The aggregates increase the mechanical strength of the mineral casting. The thixotropic agent ensures that the substances of the third component remain evenly distributed throughout the material

Weiterhin ist es eine vorteilhafte Lehre der Erfindung, dass der Röntgenstrahlen absorbierenden Stoff Hämatit (Fe2O3), Baryt (BaSO4), Wismut (Bi), Blei (Pb) und/oder Magnetit (Fe3O4) ist, wobei Baryt oder Hämatit besonders bevorzugt werden. Mit diesen Stoffen wird die Strahlenschutzleistung des Mineralgusses herbeigeführt. Eine weitere Lehre der Erfindung sieht vor, dass der absorbierende Stoff ein Korngrößenspektrum von 0 bis 32 mm bevorzugt 0 bis 16 mm aufweist. Diese Korngröße wirkt sich positiv auf die Strahlenschutzeigenschaft sowie die Elgenstelfigkeit des erfindungsgemäßen Werkstoffes aus. Zusätzlich sehen bevorzugte Ausführungsformen vor, dass der absorbierende Stoff ein Korngrößenspektrum von 0 bis 5 mm, bevorzugt 0 bis 2 mm aufweist.Furthermore, it is an advantageous teaching of the invention that the X-ray absorbing material hematite (Fe 2 O 3 ), baryta (BaSO 4 ), bismuth (Bi), lead (Pb) and / or magnetite (Fe 3 O 4 ), wherein Barite or hematite are particularly preferred. With these substances, the radiation protection performance of the mineral casting is brought about. Another teaching of the invention provides that the absorbent material has a particle size range of 0 to 32 mm, preferably 0 to 16 mm. This particle size has a positive effect on the radiation protection property and the Elgenstelfigkeit of the material according to the invention. In addition, preferred embodiments provide that the absorbent material has a particle size range of 0 to 5 mm, preferably 0 to 2 mm.

Zusätzlich hat sich vorteilhaft herausgestellt, dass der Hämatit oder Baryt ein weiteres Korngrößenspektrum von 0 bis 500 µm, bevorzugt 0 bis 100 µm aufweist. Diese Feinstkornfraktion bildet in Verbindung mit dem Polymer der ersten und zweiten Komponente die Matrix des Mineralgusses und erhöht die Strahlenabsorptionsfähigkeit durch eine verbesserte Packungsdichte.In addition, it has been found to be advantageous that the hematite or barite has a further particle size spectrum of 0 to 500 μm, preferably 0 to 100 μm. This Feinstkornfraktion forms in connection with the Polymer of the first and second component of the matrix of mineral casting and increases the radiation absorption capacity by an improved packing density.

Weiterhin betrifft die Erfindung die Verwendung des erfindungsgemäßen zuvor dargestellten Mineralgusses für das Herstellen von Röntgenstrahlung absorbierenden formeigenen Bauteilen, bevorzugt Wand- Decken- Bodenelemente und Verschlusssysteme für Strahlenschutz- oder Linearbeschleunigungsbunker, Gestelle und/oder Komponenten für Röntgeninspektionssystemen wie beispielsweise Diagnoseapparate und Röntgengeräte für die Bereiche Medizin, Sensorik, Elektronik, Material- und Naturwissenschaften sowie der Industrie. Eine weitere Anwendung ist das Füllen von Röntgenstrahl absorbierenden Bauteilen in verlorenen Formen wie z.B. Stahlschweißkonstruktionen, verschiedenen Kunststoffformen etc.Furthermore, the invention relates to the use of the previously described mineral casting according to the invention for the production of X-ray absorbing internal components, preferably wall-ceiling floor elements and closure systems for radiation protection or linear acceleration bunkers, racks and / or components for X-ray inspection systems such as diagnostic equipment and X-ray equipment for the fields of medicine , Sensors, electronics, materials and natural sciences as well as industry. Another application is the filling of X-ray absorbing components in lost forms, e.g. Steel welded constructions, different plastic forms etc.

Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsformen eines Ausführungsbeispiels näher erläutert.The invention will be explained in more detail below with reference to preferred embodiments of an embodiment.

Eine erste erfindungsgemäße Ausführung des erfindungsgemäßen Mineralgusses weist als erste Komponente ein PUR-Harz mit einem Benetzungsmittel mit insgesamt 2 bis 5 Gew-% auf. Als zweite Komponente wird ein Isocyanathärter mit insgesamt 2 bis 5 Gew-% verwendet. Die dritte Komponente besteht aus einer ersten Hämatitfraktion mit einem Korngrößenspektrum von 0,1 bis 6 mm und einem Gewichtanteil von 70-80 Gew-% und aus einer zweiten Hämatitfraktion als Matrixbilder mit einem Korngrößenspektrum von 0 bis 100 µm und einem Gewichtsanteil von 10-15 Gew-%. Weiterhin wird ein Thixotropierungsmittel zugegeben.A first embodiment according to the invention of the mineral casting according to the invention has as the first component a PUR resin with a wetting agent with a total of 2 to 5% by weight. As the second component, an isocyanate hardener with a total of 2 to 5% by weight is used. The third component consists of a first Hämatitfraktion with a particle size range of 0.1 to 6 mm and a weight fraction of 70-80% by weight and from a second hematite fraction as matrix images with a particle size range of 0 to 100 microns and a weight fraction of 10-15 % by weight. Furthermore, a thixotropic agent is added.

Eine zweite erfindungsgemäße Ausführung des erfindungsgemäßen Mineralgusses weist als erste Komponente ein Epoxidharz mit einem Benetzungsmittel mit insgesamt 6 bis 9 Gew-% auf. Als zweite Komponente wird ein Epoxidharzhärter 1 bis 4 Gew-% verwendet. Die dritte Komponente besteht aus einer ersten Hämatitfraktion mit einem Korngrößenspektrum von 0,1 bis 6 mm und einem Gewichtanteil von 30-50 Gew-% und aus einer zweiten Hämatitfraktion als Matrixbilder mit einem Korngrößenspektrum von 0 bis 100 µm und einem Gewichtsanteil von 5-15 Gew-%. Weiterhin wird ein Thixotropierungsmittel zugegeben. Weiterhin wird Quarz und ein Eruptivgestein, beispielsweise Rhyolith, mit einem Korngrößenspektrum von 5 bis 16 mm mit einem Gewichtsanteil von 30 bis 50 Gew-% hinzugefügt.A second embodiment according to the invention of the mineral casting according to the invention has as an initial component an epoxy resin with a Wetting agent with a total of 6 to 9% by weight. As the second component, an epoxy resin hardener 1 to 4% by weight is used. The third component consists of a first Hämatitfraktion with a particle size range of 0.1 to 6 mm and a weight fraction of 30-50 wt% and from a second hematite fraction as matrix images with a particle size range of 0 to 100 microns and a weight fraction of 5-15 % by weight. Furthermore, a thixotropic agent is added. Further, quartz and a igneous rock such as rhyolite having a grain size range of 5 to 16 mm are added at a weight ratio of 30 to 50% by weight.

Eine dritte erfindungsgemäße Ausführung des erfindungsgemäßen Mineralgusses weist als erste Komponente ein Epoxidharz mit einem Benetzungsmittel mit insgesamt 6 bis 9 Gew-% auf. Als zweite Komponente wird ein Epoxidharzhärter 1 bis 4 Gew-% verwendet. Die dritte Komponente besteht aus einer ersten Barytfraktion mit einem Korngrößenspektrum von 0 bis 16 mm und einem Gewichtsanteil von 60 bis 85 Gew-% und aus einer zweiten Barytfraktion als Matrixbilder mit einem Korngrößenspektrum von 0 bis 100 µm und einem Gewichtsanteil von 5-15 Gew-%. Weiterhin ist eine Hämatitfraktion mit 0 bis 15 Gew-% vorgesehen mit einem Korngrößenspektrum von 0 bis 6 mm. Weiterhin wird ein Thixotropierungsmittel zugegeben.A third embodiment of the mineral casting according to the invention has as its first component an epoxy resin with a wetting agent with a total of 6 to 9% by weight. As the second component, an epoxy resin hardener 1 to 4% by weight is used. The third component consists of a first barite fraction having a particle size range from 0 to 16 mm and a weight fraction of 60 to 85% by weight and a second baryta fraction as matrix images having a particle size range from 0 to 100 μm and a weight fraction of 5-15% by weight. %. Furthermore, a hematite fraction with 0 to 15% by weight is provided with a particle size range of 0 to 6 mm. Furthermore, a thixotropic agent is added.

Eine vierte erfindungsgemäße Ausführung des erfindungsgemäßen Mineralgusses weist als erste Komponente ein Epoxidharz mit einem Benetzungsmittel mit insgesamt 6 bis 9 Gew-% auf. Als zweite Komponente wird ein Epoxidharzhärter 1 bis 4 Gew-% verwendet. Die dritte Komponente besteht aus einer ersten Barytfraktion mit einem Korngrößenspektrum von 0 bis 16 mm und einem Gewichtsanteil von 40 bis 85 Gew-% und aus einer zweiten Barytfraktion als Matrixbilder mit einem Korngrößenspektrum von 0 bis 100 µm und einem Gewichtsanteil von 5-15 Gew-%. Weiterhin wird ein Thixotropierungsmittel zugegeben.A fourth embodiment according to the invention of the mineral casting according to the invention has as the first component an epoxy resin with a wetting agent with a total of 6 to 9% by weight. As the second component, an epoxy resin hardener 1 to 4% by weight is used. The third component consists of a first baryte fraction having a particle size range of 0 to 16 mm and a weight fraction of 40 to 85% by weight and a second baryta fraction as matrix images having a particle size range of 0 to 100 μm and a weight fraction of 5-15% by weight. %. Furthermore, a thixotropic agent is added.

Zusätzlich wird Quarz und ein Eruptivgestein mit einem Korngrößenspektrum von 5 bis 16 mm mit einem Gewichtanteil von 30 bis 60 Gew-% hinzugefügt.In addition, quartz and a igneous rock having a grain size range of 5 to 16 mm are added at a weight fraction of 30 to 60% by weight.

Claims (13)

Mineralguss mit einer ersten Komponente, die wenigstens ein Harz aufweist, mit einem Anteil von 0,1 bis 15 Gew.-%, mit einer zweiten Komponente, die wenigstens einen Härter aufweist, mit einem Anteil von 0,1 bis 15 Gew.-%, mit einer dritten Komponente, die wenigstens einen Füllstoff aufweist, mit einem Anteil von 50 bis 99 Gew.-%, wobei die dritte Komponente mindestens einen Röntgenstrahlen absorbierenden Stoff aufweistMineral casting having a first component comprising at least one resin in a proportion of 0.1 to 15% by weight, with a second component comprising at least one curing agent in an amount of 0.1 to 15% by weight , with a third component having at least one filler, in a proportion of 50 to 99 wt .-%, wherein the third component comprises at least one X-ray absorbing material Mineralguss nach Anspruch 1, dadurch gekennzeichnet, dass die erste Komponente einen Anteil von 1 bis 10 %, bevorzugt 5 bis 8 % aufweist.Mineral casting according to claim 1, characterized in that the first component has a proportion of 1 to 10%, preferably 5 to 8%. Mineralguss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zweite Komponente einen Anteil von 0,5 bis 10 %, bevorzugt 1 bis 5 % aufweist.Mineral casting according to claim 1 or 2, characterized in that the second component has a proportion of 0.5 to 10%, preferably 1 to 5%. Mineralguss nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die dritte Komponente einen Anteil von 60 bis 97%, bevorzugt 85 bis 95 % aufweist.Mineral casting according to one of claims 1 to 3, characterized in that the third component has a content of 60 to 97%, preferably 85 to 95%. Mineralguss nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die dritte Komponente als Bestandteil Quarz, Basalt, Granit, Diabas, Kreide und/oder ein Thixotropierungsmittel aufweist.Mineral casting according to one of claims 1 to 4, characterized in that the third component as a constituent quartz, basalt, granite, diabase, chalk and / or a thixotropic agent. Mineralguss nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Röntgenstrahlen absorbierenden Stoff Baryt (BaSO4), Hämatit (Fe2O3), Wismut (Bi), Blei (Pb) und/oder Magnetit (Fe3O4) ist.Mineral casting according to one of claims 1 to 5, characterized in that the X-ray absorbing substance baryta (BaSO 4 ), hematite (Fe 2 O 3 ), bismuth (Bi), lead (Pb) and / or magnetite (Fe 3 O 4 ) is. Mineralguss nach Anspruch 6, dadurch gekennzeichnet, dass der absorbierende Stoff ein Korngrößenspektrum von 0 bis 32 mm bevorzugt 0 bis 16 mm aufweist.Cast mineral according to claim 6, characterized in that the absorbent material has a particle size range of 0 to 32 mm, preferably 0 to 16 mm. Mineralguss nach Anspruch 6, dadurch gekennzeichnet, dass der absorbierende Stoff ein Korngrößenspektrum von 0 bis 5 mm bevorzugt 0 bis 2 mm aufweistMineral casting according to claim 6, characterized in that the absorbent material has a particle size range of 0 to 5 mm, preferably 0 to 2 mm Mineralguss nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der absorbierende Stoff ein Komgrößenspektrum von 0 bis 500 µm, bevorzugt 0 bis 100 µm aufweist.Mineral casting according to one of claims 1 to 8, characterized in that the absorbent material has a Komgrößens spectrum of 0 to 500 microns, preferably 0 to 100 microns. Mineralguss nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Harz ein PUR-, Epoxid-, Polyester-, Vinylester-, und/oder ein Methacrylatharz ist.Mineral casting according to one of claims 1 to 9, characterized in that the resin is a PUR, epoxy, polyester, vinyl ester, and / or a methacrylate resin. Mineralguss nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass es sich bei dem Härter der zweiten Komponente um ein Isocyanat, Anhydrid, Amin und/oder Polyamin handelt.Mineral casting according to one of claims 1 to 10, characterized in that it is the curing agent of the second component is an isocyanate, anhydride, amine and / or polyamine. Verwendung eines Mineralgusses nach einem der Ansprüche 1 bis 11 für das Herstellen von Röntgenstrahlung absorbierenden Bauteilen, bevorzugt Wand-, Decken-, Bodenelemente und Verschlusssysteme für Strahlenschutz- oder Linearbeschleunigungsbunker, Gestelle und/oder Komponenten für Röntgeninspektionssystemen wie beispielsweise Diagnoseapparate und Röntgengeräte für die Bereiche Medizin, Sensorik, Elektronik, Material- und Naturwissenschaften sowie der Industrie.Use of a mineral casting according to one of claims 1 to 11 for the production of X-ray absorbing components, preferably wall, ceiling, floor elements and closure systems for radiation protection or linear acceleration bunkers, racks and / or components for X-ray inspection systems such as diagnostic apparatus and X-ray equipment for the fields of medicine , Sensors, electronics, materials and natural sciences as well as industry. Verwendung eines Mineralgusses nach einem der Ansprüche 1 bis 11 für das Verfüllen in verlorenen Formen wie z.B. Stahlschweißkonstruktionen, verschiedenen Kunststoffformen etc.Use of a mineral casting according to any one of claims 1 to 11 for filling in lost molds such as e.g. Steel welded constructions, different plastic forms etc.
EP07021908A 2007-11-12 2007-11-12 Cast mineral composite that absorbs x-rays Not-in-force EP2058821B1 (en)

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CN114031331A (en) * 2021-12-01 2022-02-11 郑建华 Epoxy resin-based mineral casting

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