Three-dimensional printing with pore-promoting agents
AssigneeHewlett-Packard Development Company, L.P.
InventorsEmre Hiro Discekici, Shannon Reuben Woodruff, Stephen G. Rudisill, Alexey S. Kabalnov
Life of this patent
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Abstract
The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.
Claims15
A multi-fluid kit for three-dimensional printing comprising:
- a fusing agent comprising water and a radiation absorber, wherein the radiation absorber absorbs radiation energy and converts the radiation energy to heat;
- and
- a pore-promoting agent comprising water and a water-soluble pore-promoting compound, wherein the pore-promoting compound chemically reacts at an elevated temperature to generate a gas.
A materials kit for three-dimensional printing comprising:
- a powder bed material comprising polymer particles;
- a fusing agent comprising water and a radiation absorber to selectively apply to the powder bed material, wherein the radiation absorber absorbs radiation energy and converts the radiation energy to heat;
- and
- a pore-promoting agent comprising water and a water-soluble pore-promoting compound to selectively apply to the powder bed material, wherein the pore-promoting compound chemically reacts at an elevated temperature to generate a gas.
A method of making a three-dimensional printed article comprising:
- iteratively applying individual build material layers of polymer particles to a powder bed;
- based on a three-dimensional object model, selectively jetting a fusing agent onto the individual build material layers, wherein the fusing agent comprises water and a radiation absorber;
- based on the three-dimensional object model selectively jetting a pore-promoting agent onto the individual build material layers, wherein the pore-promoting agent comprises water and a water-soluble pore-promoting compound, wherein the pore-promoting compound chemically reacts at an elevated temperature to generate a gas;
- and
- exposing the powder bed to energy to selectively fuse the polymer particles in contact with the radiation absorber to form a fused polymer matrix at individual build material layers, thereby heating the pore-promoting compound to the elevated temperature to generate the gas distributed in the fused polymer matrix.
Dependencies are inferred from the claim text.