Method for printing three-dimensional parts wtih crystallization kinetics control
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United States of America Patent
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Dec 27, 2016
Grant Date -
May 28, 2015
app pub date -
Nov 4, 2014
filing date -
Nov 21, 2012
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Abstract
A method for printing a three-dimensional part with an additive manufacturing system, which includes providing a part material that compositionally has one or more semi-crystalline polymers and one or more secondary materials that are configured to retard crystallization of the one or more semi-crystalline polymers, where the one or more secondary materials are substantially miscible with the one or more semi-crystalline polymers. The method also includes melting the part material in the additive manufacturing system, forming at least a portion of a layer of the three-dimensional part from the melted part material in a build environment, and maintaining the build environment at an annealing temperature that is between a glass transition temperature of the part material and a cold crystallization temperature of the part material.
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