Methods and compositions for ionizing radiation shielding
AssigneeMaxwell Technologies, Inc.
InventorsMichael Featherby, David J. Strobel, Phillip J. Layton, Edward Li
Life of this patent
Estimating the term…
Abstract
The radiation shielding composition and method of the present invention relate to a conformal coating material composed of a matrix of densely packed radiation shielding particles, which are disbursed within a binder. The shielding composition is applied to objects to be protected such as integrated circuits, or to packages therefor, as well as for protecting animals including humans from unwanted exposure to radiation in outer space or other environments.
Claims39
A conformal coating composition, comprising:
- an amount of high Z shielding particles densely packed at a concentration greater than 60% by volume in a first binder;
- and
- an amount of low Z shielding particles densely packed at a concentration greater than 60% by volume in a second binder, wherein said amount of high Z shielding particles and said amount of low Z shielding particles are sufficient to shield an object from receiving an amount of radiation greater than a total dose tolerance of said object.
A flexible shielding composition, comprising:
- a fabric;
- and
- an amount of high Z shielding particles densely packed at a concentration greater than 60% by volume in a first flexible binder impregnated into said fabric;
- and
- an amount of low Z shielding particles densely packed at a concentration greater than 60% by volume in a second flexible binder impregnated into said fabric, wherein said amount of high Z shielding particles and said amount of low Z shielding particles are sufficient to shield an object from receiving an amount of radiation greater than a total dose tolerance of said object.
A method of designing a shielding composition, comprising:
- determining the radiation tolerance of the object to be shielded;
- determining the radiation requirement for the particular application;
- and
- determining the amount of said shielding composition required to bring said object within tolerance relative to said determined radiation tolerance of said object and said determined radiation requirement of said application, wherein said shielding composition consists of an amount of high Z particles densely packed at a concentration greater than 60% by volume in a first binder and an amount of low z particles densely packed at a concentration greater than 60% by volume in a second binder.
A method of designing a shielding composition, comprising:
- estimating the amount of shielding composition required to bring an object within a tolerance, wherein said shielding composition consists of an amount of high Z particles densely packed at a concentration greater than 60% by volume in a first binder and an amount of low Z particles densely packed at a concentration greater than 60% by volume in a second binder.
A method of shielding an object, comprising:
- applying a conformal coating composition composed of an amount of high Z shielding particles densely packed at a concentration greater than 60% by volume in a first binder an amount of low Z shielding particles densely packed at a concentration greater than 60% by volume in a second binder, wherein said amount of shielding particles are sufficient to shield an object from receiving an amount of radiation greater than a total dose tolerance of said object.
A method of shielding an object, comprising:
- inserting said object into an injection mold;
- and
- injecting a conformal coating composition composed of an amount of high Z shielding particles densely packed at a concentration greater than 60% by volume in a first binder and an amount of low Z shielding particles densely packed at a concentration greater than 60% by volume in a second binder into said injection sold containing said object, wherein said amount of high Z shielding particles and said amount of low Z shielding particles are sufficient to shield said object from receiving an amount of radiation greater than a total dose tolerance of said object.
Dependencies are inferred from the claim text.