Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With subsequent cutting – grooving – breaking – or comminuting
Patent
1998-08-17
2000-05-23
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With subsequent cutting, grooving, breaking, or comminuting
264109, 264119, 264670, 264678, 419 36, 419 37, 419 65, C04B 35634
Patent
active
060662794
ABSTRACT:
A method of gelcasting includes the steps of providing a solution of at least hydroxymethylacrylamide (HMAM) and water. At least one inorganic powder is added to the mixture. At least one initiator system is provided to polymerize the HMAM. The initiator polymerizes the HMAM and water, to form a firm hydrogel that contains the inorganic powder. One or more comonomers can be polymerized with the HMAM monomer, to alter the final properties of the gelcast material. Additionally, one or more additives can be included in the polymerization mixture, to alter the properties of the gelcast material.
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Janney Mark A.
Kirby Glen H.
McMillan April D.
Nunn Stephen D.
Omatete Ogbemi O.
Derrington James
Lockheed Martin Energy Research Corp.
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