Three-dimensional architected materials for energy absorption
AssigneeNational Research Council of Canada
InventorsKathleen Sampson, Kurtis Laqua, Derek Aranguren van Egmond, Thomas Lacelle, Chantal Paquet, Hao Li
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Abstract
The present disclosure relates to a material having a three-dimensional shape. In particular, the material has a three-dimensional shape comprising a first phase and a second phase. The first phase comprises a crosslinked polymer and the second phase comprises a second polymer that is present in a concentration gradient within the crosslinked polymer to form an interpenetrating network having a concentration gradient.
Claims62
A material having a three-dimensional shape comprising:
- a) a first phase comprising a first crosslinked polymer;
- and
- b) a second phase comprising a concentration gradient interpenetrating polymer network comprising the first crosslinked polymer and a second polymer, the concentration gradient interpenetrating polymer network comprising the second polymer at a decreasing concentration along at least one axis within the first phase;
- and
- the three-dimensional shape of the material aids in energy absorption.
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A process for preparing a material having a three-dimensional shape, the process comprising:
- a) 3D-printing a first cross-linked polymer in the form of the three-dimensional shape to form a first phase comprising the first crosslinked polymer;
- b) exposing at least a portion of the first cross-linked polymer in the form of the three-dimensional shape to a liquid precursor comprising second polymer precursors, wherein the second polymer precursors diffuse into the first cross-linked polymer to obtain the first cross-linked polymer in the form of the three-dimensional shape with a decreasing concentration gradient of the second polymer precursor in the first cross-linked polymer to form a second phase within the first phase;
- c) polymerizing the second polymer precursors to form the second polymer and to obtain the material having a concentration gradient interpenetrating polymer network.
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Dependencies are inferred from the claim text.