ADHESIVE FOR 3D PRINTING
In one aspect, adhesives for use with a 3D printer are described herein. In some embodiments, an adhesive for use with a 3D printer comprises a first polymeric component comprising a poly(vinyl alcohol) and a second polymeric component. The poly(vinyl alcohol), in some embodiments, comprises amorphous poly(vinyl alcohol). In some embodiments, the second polymeric component comprises a water-soluble polymer. Further, in some embodiments, an adhesive described herein further comprises a solvent, a surfactant, and/or a preservative.
1 . An adhesive for use with a 3D printer comprising:
a first polymeric component comprising an amorphous poly(vinyl alcohol); and
a second polymeric component,
wherein the poly(vinyl alcohol) is present in the adhesive in an amount between about 3 and about 20 weight percent, based on the total weight of the adhesive, and the second polymeric component is present in the adhesive in an amount between about 30 and about 50 weight percent, based on the total weight of the adhesive.
2 . The adhesive of claim 1 , wherein the second polymeric component comprises a poly(2-ethyl-2-oxazoline).
3 . The adhesive of claim 1 , wherein the second polymeric component comprises a water-soluble polymer.
4 . The adhesive of claim 3 , wherein the water-soluble polymer is extrudable.
5 . The adhesive of claim 1 further comprising a solvent.
6 . The adhesive of claim 5 , wherein the solvent comprises deionized water.
7 . The adhesive of claim 1 further comprising a surfactant.
8 . The adhesive of claim 1 further comprising a preservative.
9 . The adhesive of claim 1 , wherein the poly(vinyl alcohol) is present in the adhesive in an amount between about 3 and about 10 weight percent, based on the total weight of the adhesive.
10 . The adhesive of claim 5 , wherein the solvent is present in the adhesive in an amount between about 50 and about 95 weight percent, based on the total weight of the adhesive.
11 . The adhesive of claim 7 , wherein the surfactant is present in the adhesive in an amount between about 0.01 and about 0.5 weight percent, based on the total weight of the adhesive.
12 . The adhesive of claim 8 , wherein the preservative is present in an amount between about 0.01 and about 0.5 weight percent, based on the total weight of the adhesive.
13 . The adhesive of claim 1 , wherein the adhesive has a bonding strength that is at least about 10 times greater at 100° C. than at room temperature.
14 . The adhesive of claim 1 , wherein the adhesive has a bonding strength that is at least about 10 times greater when dry at 23° C. than when wet at 23° C.
15 . The adhesive of claim 1 , wherein the adhesive is water-soluble.
16 . A method of printing a 3D article comprising:
applying an adhesive to a build surface of a print pad of a 3D printer, the adhesive comprising:
a first polymeric component comprising an amorphous poly(vinyl alcohol); and
a second polymeric component,
wherein the poly(vinyl alcohol) is present in the adhesive in an amount between about 3 and about 20 weight percent, based on the total weight of the adhesive, and the second polymeric component is present in the adhesive in an amount between about 30 and about 50 weight percent, based on the total weight of the adhesive.
17 . The adhesive of claim 1 further comprising a solvent, a surfactant, and a preservative, and wherein the solvent is present in the adhesive in an amount between about 50 and about 95 weight percent, the surfactant is present in the adhesive in an amount between about 0.01 and about 0.5 weight percent, and the preservative is present in the adhesive in an amount between about 0.01 and about 0.5 weight percent, based on the total weight of the adhesive.
18 . The method of claim 16 further comprising:
selectively depositing layers of a fluid print material onto the build surface of the print pad to form the 3D article; and
removing the 3D article from the print pad,
wherein removing the 3D article from the print pad comprises altering the adhesive property of the adhesive.
19 . The method of claim 18 , wherein altering the adhesive property of the adhesive comprises changing the temperature of the adhesive and/or exposing the adhesive to water.
20 . The method of claim 17 , wherein the build surface of the print pad comprises an anodized aluminum surface, a glass surface, or a polycarbonate surface.