Abstract: The present disclosure provides nanoparticles of barium zirconium oxide (BaZrO3.BaCO3) and a process for preparation thereof. The present disclosure further provides a coating formulation that chiefly comprises the BaZrO3.BaCO3 nanoparticles along with its method of preparation. Still further, the present disclosure provides X-ray retardant articles and an X-ray retardant preparation for topical application.

Abstract: An ionizing radiation barrier includes a binder selected from thermoplastics, silicone elastomers, plastisols and organisols; and high density particles dispersed throughout said binder. The particles are preferably homogeneously dispersed and the radiation barrier is preferably devoid of air bubble and pin holes. The high density particles are radio-opaque so as to provide for radiation attenuation. A method of protecting a body from ionizing radiation includes positioning such an ionizing radiation barrier between an ionizing radiation source and a body to be protected. A method for producing an ionizing radiation barrier includes the steps of: homogeneously dispersing high density particles in a binder to create a loaded binder; deaerating the loaded binder to remove air bubbles; forming a desired structure from the loaded binder; and setting the loaded binder.

Abstract: Polyaniline composites comprise a major matrix and fillers. The major matrix is polyaniline having electrical conductivity. The fillers are used to fill the matrix. The fillers comprise carbon materials and metal materials. For example, carbon materials can be graphene, carbon nanotubes or combination thereof. The metal materials are attached to or embedded on the carbon materials. Besides, a method for fabricating polyaniline composites is also provided. By decorating the carbon materials with the metal materials, conductivity and electromagnetic shielding efficiency of the polyaniline composites are enhanced significantly.

Abstract: A lead-free, non-toxic composite material including a thermosetting polymer and at least one of a heavy particulate filler, a light particulate filler or a combination thereof. The composite material may be utilized in manufacturing articles used in radiation shielding applications.

Abstract: An overall lead-free X-ray shielding rubber compound material. The overall lead-free X-ray shielding rubber compound material uses rare earth mixture to replace lead, simultaneously adds metal tin and compounds thereof, metal tungsten and compounds thereof and bismuth and compounds thereof as shielding main materials and is further compounded with rubber to prepare the compound material which can realize the overall shielding and the complete lead-free property within the energy range of 40-170 kVp. When rare earth and bismuth materials are used, the way of combined use of two metal element inorganic compounds and unsaturated organic complexes is adopted, and the in-situ reaction and the compounding with a polymer matrix are carried out, thereby leading the shielding element disperse phase to form nano-micro-level dispersed particles.

Abstract: A filled composition for radiation shielding includes at least one polymer ingredient and at least one metal-containing filler. The at least one polymer ingredient is selected from the group consisting of a polyolefin elastomer, a polyolefin co-polymer, a polyolefin ter-polymer, and a combination thereof. The polyolefin elastomer, the polyolefin co-polymer, or the polyolefin ter-polymer includes monomer units derived from ethylene and at least one vinyl monomer having more than three carbon atoms. The at least one metal-containing filler is selected from a metal filler, a metal compound or a combination thereof.

Abstract: Systems, devices, methods, and compositions are described for providing an x-ray shielding system including a flexible layer including a support structure having a plurality of interconnected interstitial spaces that provide a circulation network for an x-ray shielding fluid composition.

Abstract: An elastomeric matrix impregnated with at least 70% by weight of a high atomic number radiopaque substance, and cured with an organic peroxide, to form carbon-carbon links between elastomer molecular chains. The radiopaque elastomeric matrix may be used to create a flexible, lightweight, carbon-carbon linked, multilaminated protection material against ionizing radiation. The multilaminated protec tion material may include a mechanical reinforcement cloth layer to avoid material expansion or rupture; and additional external elastomeric layers for protection against aging, physical, biological and chemical hazards, as well as allowing mechanical memory of the material and easy cleaning, desinfection and sterilization.

Abstract: Disclosed are a radioactive ray shield sheet with flexibility and restoration, clothes made of the same and a manufacturing method thereof, the radioactive shield sheet manufactured to have a sheet shape by mixing powdered lead with an additive compound, and having flexibility and restorability. Thus, there is provided a radioactive ray shield sheet which is flexible and restorable, convenient to use, and improved in safety.

Abstract: A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Abstract: A neutron absorbing insert for use in a fuel rack and method of manufacturing the same. In ones aspect, the invention is a neutron absorbing apparatus comprising: a plate structure having a first wall and a second wall that is non-coplanar to the first wall; the first and second walls being formed by a single panel of a metal matrix composite having neutron absorbing particulate reinforcement that is bent into the non-coplanar arrangement along a crease; and a plurality of spaced-apart holes formed into the single panel along the crease prior to bending.

Abstract: Radiation structures formed from a composition including calcium silicate, magnesium or calcium oxides and an acid phosphate are provided. The composition may also include fly ash or kaolin.

Abstract: This invention provides melanin nanoshells and their use for protection against radiation, particularly ionizing radiation, and electronic pulses, and methods of making materials comprising melanin nanoshells.

Abstract: The present invention relates to a paint with metallic microwires, to the process for integrating metallic microwires to obtain such paint, and to a process for applying said paint on metallic surfaces (1). The process for applying paint is performed in several steps: applying a first coat (2) of primer on the metallic surface; applying on the first coat (2) a second coat (3, 3?) of paint; applying on said second coat (3) an active third coat (4) of a paint containing microwires; and sanding said active third coat (4) with fine grain sandpaper to remove the microwires oriented perpendicular to the plane of the metallic surface; the maximum attenuation frequency of the reflectivity of said electromagnetic radiation being determined within of the range of maximum attenuation frequencies given by the composition of the paint with microwires, and by the thicknesses and dielectric constants of the different coats.

Abstract: Specific activity of radionuclides contained in the shielding composite building materials and building components, which are based on aggregates, cement and water or on aggregates and epoxy resin, is for radionuclide Ra-226 lower than 5 Bq/kg, for radionuclide Th-228 lower than 5 Bq/kg, and for radionuclide K-40 lower than 50 Bq/kg. Aggregates and mineral compounds of cement may be formed by materials from Paleozoic geological formations.

Abstract: To present a brick the density of which is great, that is high strength, and that exhibits a superior radiation shielding effect, and a manufacturing method for this. A brick in which by firing clay into which ferrite powder has been mixed at a proportion of 60 wt % after being formed into a specified shape, the density after firing has been made 3.5 g/cm3 and the radiation shielding effect has been enhanced is obtained. For the ferrite powder, one that is expressed by the compositional formula: AO·nX2O3 (however, it should be noted that in said compositional formula, A is one type or more of an element selected from among Mg, Ca, Mn, Co, Ni, Cu, Sr, Ba, or Pb, X is one type or more of an element selected from among Fe, Co, or Ni, and n is a mol ratio that is defined as an integer from 1 to 9) is used.

Abstract: A process for conversion of conventional sand granules (or other particulates) to a ‘core-shell’ adsorbent granules in which GO (or GO-f) coating imparts nano structural features on the surface of the sand granules (or other particulates). Such materials are useful in a variety of engineering applications such as water purification, catalysis, capacitors, proppants, casting, and magnetic shielding.

Abstract: Compositions of P4HB and processes to injection mold these compositions have been developed. These compositions are prepared from P4HB polymers and blends having intrinsic viscosities less than 3.2 dl/g but greater than 0.8 dl/g, moisture contents of less than 0.5% by weight, and more preferably less than 0.05% by weight, and using a polymer melt temperature during molding of at least 150° C. A preferred embodiment comprises a P4HB molding with an intrinsic viscosity of less than 3.2 dl/g that degrades rapidly in vivo.

Abstract: A composition comprising india stabilized gadolinia wherein the india stablilized gadolinia is an oxide with a direct substitution of the indium ion for the gadolinia ion resulting in a compound with the formula InxGd2-xO3.

Abstract: The present invention provides a conductive coating composition, which contains: a conductive organic polymer, a non-conductive organic compound, a solvent and optionally a curing agent; where the content of the conductive organic polymer is about 10% to about 50%, based on the total weight of the solids content in the composition. The present invention also provides a conductive film, which is formed by drying the conductive coating composition. The conductive film has a surface resistivity lower than 1000 ?/sq and a total light transmittance greater than 80%. The conductive coating composition of the present invention can be used as an electromagnetic interference shielding material or an electrode material, and can be applied to various electronic products.

Abstract: A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix.

Abstract: In accordance with the present invention, there is provided an electromagnetic shielding composition. The electromagnetic shielding composition in accordance with the broad aspects of the present invention includes from about 40% to 60% by volume of a sheet molding composition filled with an effective amount of carbon fibers for shielding of electromagnetic radiation from the electrical systems in an at least partially electrically driven vehicle.

Abstract: In order to provide a noise suppression sheet whose imaginary part magnetic permeability ??, representing a magnetic loss component, is large at a GHz-band frequency, thus having an excellent noise suppression effect, the noise suppression sheet comprises a flat magnetic powder having a saturation magnetostriction of 12.0×10?6 or more and 38.0×10?6 or less and an organic binder.

Abstract: The present invention relates to a method for radiographically inspecting a component by means of X-rays, where at least one component surface to be radiographed is provided with a surface structure, with at least the surface provided with the surface structure being smoothed by means of a smoothing material to level out the surface structure, with at least one organic compound and at least one metal powder being used as smoothing material, with the X-ray absorption behaviour of the smoothing material essentially equaling the X-ray absorption behaviour of the material of the component, as well as to a smoothing material for carrying out the method in accordance with claim.

Abstract: A high-rigidity electromagnetic shielding composition includes: (A) about 10 to about 34 wt % of polyamide resin including an aromatic moiety in the backbone structure; (B) about 65 to about 85 wt % of carbon fiber; and (C) about 1 to about 20 wt % of metallic filler. The composition can have high modulus, electromagnetic shielding effects, and high surface conductance, and can thus be used to replace frames, brackets and the like for electronic devices.

Abstract: The invention discloses the incorporation of nanostructured additives into high-performance, hydrogen-rich polymeric materials to provide radiation shields for use against Galactic Cosmic Radiation and Solar Energetic Particles as well as secondary particulate and electromagnetic radiation resulting from nuclear reactions within the shield. Nanostructured materials are defined as having at least one dimension in the nanometer range, and may include metallic and metal-oxide nanoparticles, nanotubes, nanoclays, coated polymeric nanoparticles and pairs of materials forming a nanostructured interface. Functionalization of additives is performed to increase their compatability with polymeric materials. Hydrogen-rich polymers refer to those having interstitial hydrogen or hydrogen-containing materials pendant to the polymer backbone.

Abstract: PROBLEM To effectively utilize plant residue such as soybean hulls, rapeseed meal, rice bran, rice husk, and cacao husk. SOLUTION When forming sheet material from a mixture of burned plant material and fibrous material by a wet-process sheet production method, the burned plant material is one of a burned material of rice husk, a burned material of rice bran, a burned material of soybean hulls, a burned material of inner skin of peanut, a burned material of conduit side wall portion of seed plant or a burned material of cacao husk, and the fibrous material is one of a organic fiber derived from thermoplastic resin including polyolefin consisting of polyethylene and polypropylene, polyester, polyamide, vinyl chloride, polyacrylonitrile, polyvinyl chloride and aramid, a fiber derived from thermosetting resin including kynol, a natural fiber including cotton, wool, etc.

Abstract: Effective radiation shielding is required to protect crew and equipment in various fields including aerospace, defense, medicine and power generation. Light elements and in particular hydrogen are most effective at shielding against high-energy particles including galactic cosmic rays, solar energetic particles and fast neutrons. However, pure hydrogen is highly flammable, has a low neutron absorption cross-section, and cannot be made into structural components. Nanocomposites containing the light elements Boron, Nitrogen, Carbon and Hydrogen as well dispersed boron nano-particles, boron nitride nanotubes (BNNTs) and boron nitride nano-platelets, in a matrix, provide effective radiation shielding materials in various functional forms. Boron and nitrogen have large neutron absorption cross-sections and wide absorption spectra.

Abstract: A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix.

Abstract: Systems, devices, methods, and compositions are described for providing an x-ray shielding system including a flexible layer including a support structure having a plurality of interconnected interstitial spaces that provide a circulation network for an x-ray shielding fluid composition.

Abstract: A spacecraft or spacesuit that provides shielding to reduce exposure to ionizing radiation such as high energy electrons and protons. Further, methods are provided for reducing exposure through spacesuits and manufacturing spacecraft and spacesuit shields.

Abstract: Described are improved x-ray and gamma ray radiation protective compositions, fibers, and clothing. Also described are methods for producing lightweight, radiation-shielding, protective textiles for protecting the human body and/or methods of producing radiation-shielding coating materials that can be used for coating textiles.

Abstract: Products for obtaining masses for pouring, bricks, tiles and any other format are achieved, in which participate aggregates and asphaltic binders, as well as also additives for regulating the process. The invention achieves a remarkable increase in the capacity of neutrons, X-rays and/or photons radiation protection, and for this the use of asphaltic hydrocarbon as binder has been envisaged, while as aggregate is used Colemanite in absorption and attenuation of neutrons, Barite in the case of X-rays and Magnetite, Hematite and/or Steel shot in the case of photons.

Abstract: Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects.

Abstract: A heavily filled bismuth compound composite having a polymer matrix and a bismuth compound therein. The bismuth compound may be bismuth oxide, or other bismuth compounds. The polymer may be any of a very wide range of materials or combinations thereof. Binder, secondary fillers or other third components may be added. By means of use of various bismuth compounds, polymers, and third components, the physical, radiological and electrical properties of the finished products may be tailored to achieve desired properties. In addition, the invention teaches that radiation shielding, insulators, and combined radiation shield/insulators may be fashioned from the composite. A wide range of production methods may be employed, including but not limited to liquid resin casting.

Abstract: A composition of matter that experiences an increase rate of radioactive emission is presented. The composition comprises a radioactive material and particles having affinity for Hydrogen or its isotopes. When exposed to Hydrogen, the composition's emission rate increases. Methods of production are also presented.

Abstract: The invention relates to a radiation attenuation elastomeric material of the type comprising an elastomer in which a powder of metal oxides is dispersed, and which is characterized in that the powder of metal oxides comprises from 70 to 90% by mass of bismuth trioxide, from 5 to 15% by mass of tungsten trioxide and from 5 to 15% of lanthanum trioxide. It also relates to the use of this elastomeric material for making individual protective articles against ionizing radiations. It further relates to a multilayer protective glove against ionizing radiations, at least one layer of which is formed by said elastomeric material, as well as to the use of this glove for protection against ionizing radiations emitted by powders of nuclear fuels, notably with plutonium. Fields of application: the nuclear industry for handling powders of nuclear fuels but also medical imaging, interventional radiology, nuclear medicine, processing of plastic materials, inspection and control of manufactured parts, etc.

Abstract: Various embodiments of the present invention pertain to x-ray absorbing compositions that comprise a carbon material associated with an x-ray absorbing material. In some embodiments, the x-ray absorbing material is selected from the group consisting of lead-based compounds, bismuth-based compounds, and combinations thereof. In some embodiments, the carbon material is selected from the group consisting of carbon nanotubes, graphenes, carbon fibers, amorphous carbons, and combinations thereof. In further embodiments, the carbon materials of the present invention may also be treated with a surfactant, an acid, polymers or combinations thereof. In some embodiments, the carbon materials of the present invention may be further associated with a metal oxide. Additional embodiments of the present invention pertain to methods of making the aforementioned x-ray absorbing compositions. Such methods generally include associating a carbon material with an x-ray absorbing material.

Abstract: A neutron absorbing insert for use in a fuel rack and method of manufacturing the same. In ones aspect, the invention is a neutron absorbing apparatus for insertion into a fuel rack comprising: a sleeve having a first wall and a second wall, the first and second walls forming a chevron shape; and the first and second wall being a single panel of a metal matrix composite having neutron absorbing particulate reinforcement bent into the chevron shape along a crease.

Abstract: Various potato graphite filler, thermal interface materials, EMI shielding materials and methods of making thermal interface and EMI shielding materials are disclosed. An example thermal interface material includes a matrix material and a graphite filler suspended in the matrix material. The graphite filler includes potato graphite particles.

Abstract: Provided is a radiation-shielding glass, including a glass composition in % by mass of 10 to 35% SiO2, 55 to 80% PbO, 0 to 10% B2O3, 0 to 10% Al2O3, 0 to 10% SrO, 0 to 10% BaO, 0 to 10% Na2O, and 0 to 10% K2O, in which the radiation-shielding glass has a total light transmission at a wavelength of 400 nm at a thickness of 10 mm of 50% or higher. Also provided is a radiation-shielding glass which has the similar glass composition and can be used for a gamma-ray shielding glass for a PET examination.

Abstract: An overall lead-free X-ray shielding rubber compound material. The overall lead-free X-ray shielding rubber compound material uses rare earth mixture to replace lead, simultaneously adds metal tin and compounds thereof, metal tungsten and compounds thereof and bismuth and compounds thereof as shielding main materials and is further compounded with rubber to prepare the compound material which can realize the overall shielding and the complete lead-free property within the energy range of 40-170 kVp. When rare earth and bismuth materials are used, the way of combined use of two metal element inorganic compounds and unsaturated organic complexes is adopted, and the in-situ reaction and the compounding with a polymer matrix are carried out, thereby leading the shielding element disperse phase to form nano-micro-level dispersed particles.

Abstract: Apparatus and methods according to various aspects of the present invention may operate in conjunction with composite matrix material and reinforcement material, such as nanostructures. The nanostructures may be evenly dispersed and/or aligned in the matrix material through application of an electromagnetic field, resulting in a nanocomposite material. In one embodiment, the nanocomposite material is suitable for large scale processing.

Abstract: A thermoplastic compound is disclosed, comprising polyhydroxyalkanoate and macrocyclic poly(alkylene dicarboxylate) oligomer. Optionally the compound also includes additional polymers and functional additives to modify physical properties of the compound. Molded or extruded plastic articles can be made from the compound. The compound is ductile, in comparison to the polyhydroxyalkanoate without the macrocyclic poly(alkylene dicarboxylate) oligomer.

Abstract: An x-ray marker for medical implants made of a biocorrodible metallic material, wherein the x-ray marker composite includes 1-40 weight parts of a carrier matrix having a melting point greater than or equal to 43° C., which comprises 90 weight-percent or more at least one triglyceride; and 60-99 weight parts of a radiopaque marker component which is embedded in the carrier matrix.

Abstract: The present invention provides a radio-opaque composition comprising a cleavable, preferably enzymatically-cleavable, derivative of a physiologically tolerable organoiodine compound and a non-acrylic polymer wherein said derivative is incorporated in said non-acrylic polymer.

Abstract: Disclosed is reflector graphic which is characterized in that the main component of the graphite is nuclear-purity natural graphite in addition to silicon carbide and/or zirconium carbide, the pressed pieces are shaped by a combined cold-hot pressing process, and the thermal treatment of the pressed pieces is limited to temperatures of less than 2000° C.

Abstract: A composite material includes lithium hydride particles dispersed within lithium to form a lithium-lithium hydride composite. The lithium-lithium hydride composite has increased strength over pure lithium and similar soft X-ray transmission characteristics as pure lithium. A soft X-ray blast window may be made from the lithium-lithium hydride composite with increased reliability and cost effectiveness. A method for making a composite material includes dispersing lithium hydride into lithium metal using a variety of dispersion techniques.

Abstract: Provided is a protective concrete for weaken the intensity of proton radiation, and it is prepared by mixing 525# cement 500-700 Kg; barite sand 1000-1400 kg, barite stone 1500-1800 Kg, lead powder 180-200 Kg and water 170-180 Kg. The barite that can absorb the proton radiation is used, so the present concrete is much better than conventional concretes in weakening the proton radiation, and 1.5 m-thick wall without lead plates which is prepared with the present concrete can achieve the same effect on weakening the proton radiation with a conventional 2 m-thick wall covering with lead plates.

Abstract: A high voltage insulator and radiation shield made of barium sulfate composite having a polymer matrix and barium sulfate therein. The device may be made by casting. By means of use of various combinations of barium sulfate, other radiologically resistant materials, polymers, and third components, the physical, radiological and electrical properties of the finished products may be tailored to achieve desired properties. In addition, the invention teaches that radiation shielding, insulators, and combined radiation shield/insulators may be fashioned from the composite. A wide range of production methods may be employed, including but not limited to liquid resin casting.