Additively manufactured polymeric components
An example technique may include depositing, on or adjacent a substrate, a first volume of a polymeric material using an additive manufacturing technique. The first volume of the polymeric material has a first degree of polymer orientation associated with a first deposition rate and a first temperature. The example technique may include depositing, on or adjacent the substrate or the first volume of material, at least one second volume of the polymeric material. The second volume of the polymeric material has a second degree of polymer orientation associated with a second deposition rate and a second temperature. The first volume and the second volume are configured to respond to a shape change stimulus by exhibiting a respective first change in dimension and a second change in dimension. The first change in dimension is different from the second change in dimension by a predetermined threshold.
1. A method comprising:
depositing, on or adjacent a substrate, a first volume of a polymeric material at a first deposition rate and a first temperature using an additive manufacturing technique for depositing volumes of the polymeric material, wherein the first volume of the polymeric material has a first degree of polymer orientation associated with the first deposition rate and the first temperature, and
depositing, on or adjacent the substrate or the first volume of material, at least one second volume of the polymeric material at a second deposition rate and a second temperature, wherein the second volume of the polymeric material has a second degree of polymer orientation associated with the second deposition rate and the second temperature, wherein the first volume and the second volume are configured to respond to a shape change stimulus by exhibiting a respective first change in dimension and a second change in dimension, wherein the first change in dimension is different from the second change in dimension by a predetermined threshold.
2. The method of claim 1 , wherein the additive manufacturing technique comprises fused deposition modeling.
3. The method of claim 1 , wherein the additive manufacturing technique comprises outputting a heated filament comprising the polymeric material, wherein the heated filament cools to form the first volume of material and the at least one second volume of material.
4. The method of claim 3 , further comprising extruding the heated filament.
5. The method of claim 3 , further comprising drawing the heated filament.
6. The method of any claim 1 , further comprising heating the polymeric material to a predetermined temperature within the filament delivery device or during deposition after exiting the filament delivery device, and, based on a predetermined deposition rate, cooling the polymeric material from the predetermined temperature at a predetermined cooling rate to control the degree of polymer orientation of the polymeric material.
7. The method of claim 6 , wherein heating the polymeric material to the predetermined temperature comprises directing an energy beam at the polymeric material.
8. The method of claim 1 , further comprising, based on a predetermined deposition rate, controlling a heating device or a cooling device to control a heating rate or a cooling rate of the polymeric material to control the degree of polymer orientation of the polymeric material.
9. The method of claim 1 , wherein the polymeric material comprises a shape memory polymer.
10. The method of claim 1 , wherein the polymeric material comprises an electrically conductive composition.
11. The method of claim 1 , wherein depositing the first volume comprises controlling, by a computing device, means for additively depositing volumes to deposit the first volume at the first deposition rate and the first temperature, and wherein depositing the second volume comprises controlling, by the computing device, the means for additively depositing volumes to deposit the second volume at the second deposition rate and the second temperature.