Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material
Patent
1987-01-13
1989-01-03
Cintins, Ivars
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling heat transfer with molding material
264 63, 264344, 419 36, 419 65, B29C 7102, C04B 3564, B22F 100, G01N 2520
Patent
active
047955988
ABSTRACT:
A method of binder removal from a green body before sintering or the like wherein the binder is constituted of a polymeric material or mixture which is degradable by thermo-oxidation and the green body is initially heated to a temperature where the binder reaches an energy level above the activation energy of the binder, as a result of which exothermic degradation reactions are initiated at the binder-atmosphere interface. The rate of the exothermic reaction is controlled by the rate of supply of thermal energy and oxygen to the reaction site as well as the rate of evacuation of the heat of reaction generated during the thermal oxidation. Substantially all of the binder is thus removed from the green body which can then be sintered in accordance with the practices of the prior art.
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Cintins Ivars
Evans Linda S.
Schneck Thomas
Solid Micron Materials, Pte, Ltd.
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