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Methods for the continuous production of plastic scintillator materials

United States Patent

5,968,425
October 19, 1999
View the Complete Patent at the US Patent & Trademark Office
Fermi National Accelerator Laboratory - Visit the Office of Research and Technology Applications Website
Methods for producing plastic scintillating material employing either two major steps (tumble-mix) or a single major step (inline-coloring or inline-doping). Using the two step method, the polymer pellets are mixed with silicone oil, and the mixture is then tumble mixed with the dopants necessary to yield the proper response from the scintillator material. The mixture is then placed in a compounder and compounded in an inert gas atmosphere. The resultant scintillator material is then extruded and pelletized or formed. When only a single step is employed, the polymer pellets and dopants are metered into an inline-coloring extruding system. The mixture is then processed under a inert gas atmosphere, usually argon or nitrogen, to form plastic scintillator material in the form of either scintillator pellets, for subsequent processing, or as material in the direct formation of the final scintillator shape or form.
Bross; Alan (Downers Grove, IL), Pla-Dalmau; Anna (Naperville, IL), Mellott; Kerry (Malta, IL)
The United States of America as represented by the United States (Washington, DC)
08/ 958,815
October 28, 1997
The United States Government has rights in this invention pursuant to Contract No. DE-AC02-76CHO3000 between the U.S. Department of Energy and the University Research Association.