Patent ID: 6608319
Filing Date: 2003-08-19
Classification: G21F

Abstract:
A flexible composition able to stop high fluxes of gamma and neutron radiation and showing resistance to high temperatures, said composition comprising a uniform mixture of:between about 10%-30% by weight an organic polymer selected from the group consisting of silicone rubber, siloxanes, silanols, vinyl elastomers and fluorocarbon polymers for providing a flexible matrix; between about 25%-75% by weight of a powdered gamma radiation shielding material selected from the group consisting of tungsten, lead, tin, antimony, indium and bismuth for increasing gamma radiation shielding of the mixture; between about 5%-10% by weight of a neutron absorbing material selected from the group consisting of boron, cadmium and gadolinium for increasing neutron absorption of the mixture; up to about 5% by weight diamond powder for increasing thermal conductivity of the mixture; up to about 5% by weight powdered silicon dioxide for increasing thermal resistance of the mixture; up to about 5% by weight of barium sulfate powder for increasing neutron absorption and electrical conductivity of the mixture; and between about 2% and 8% by weight of a hydrogen absorbing material selected from the group consisting of palladium, lithium, calcium, titanium, scandium, lithium nickel compounds, lanthanum nickel compounds, yttrium nickel compounds, samarium cobalt compounds and yttrium cobalt compounds for absorbing hydrogen gas.