摘要:
Compositions, methods of using the compositions, and solid freeform fabrication (SFF) systems for producing three-dimensional objects are disclosed. One exemplary composition, among others, includes a basic component, an acidic component, at least one monoacrylate component, a light sensitive initiator, and a polar binder. A polymerization reaction between the at least one monoacrylate component and the light sensitive initiator occurs upon exposure to optical energy. The polar binder includes a viscosity modifier and a surface tension modifier. The polar binder is capable of stimulating a crosslinking reaction between the basic component and the acidic component.
摘要:
The present invention is drawn toward compositions, methods, and systems for solid free-form fabrication of three-dimensional objects. In one embodiment, a system for solid free-form fabrication of three-dimensional objects can comprise a particulate composition, a substrate configured for supporting at least a layer of the particulate composition in a defined region, and a liquid phase binder configured for being jetted in the defined region to polymerize at least a portion of the particulate composition to form a polymeric cement. Using this system in a layer by layer deposition process, three-dimensional objects can be formed. The particulate composition can include from 70 wt % to 99.9 wt % of polymeric particulates, and from 0.1 wt % to 10 wt % of a polymerization initiator. The liquid phase binder can include from 70 wt % to 90 wt % of polymerizable monomers and from 0.1 wt % to 10 wt % of a polymerization accelerator.
摘要:
A method for solid free-form fabrication of a three-dimensional object includes depositing a particulate blend in a defined region, the particulate blend including a calcium phosphate source, a reaction retardant, and a layered double hydroxide, and selectively ink-jetting a solubilizing binder onto a predetermined volume of the particulate blend to form a pre-ceramic object in the predetermined volume, wherein the solubilizing binder includes wetting agents, humectants, pH modifiers, and surfactants.
摘要:
The present invention is drawn toward materials, methods and systems for solid free-form fabrication of three dimensional objects. In one embodiment, a method for solid free-form fabrication of a three-dimensional object can comprise steps of a) depositing a particulate composition including inorganic phosphate particulates in a defined region; b) ink-jetting an aqueous liquid onto a predetermined area of the particulate composition to form hydrated cement in the predetermined area; c) hardening the hydrated cement; and repeating steps a) through c) such that multiple layers of the cement are formed that are bound to one another, thereby forming the three dimensional object. In another embodiment, a system for solid free-form fabrication of three-dimensional objects can comprise a particulate composition including inorganic phosphate particulates; a substrate configured for supporting at least a layer of the particulate composition in a defined region; and an ink-jettable aqueous liquid configured for being jetted in the defined region to hydrate at least a portion of the particulate composition to form a cement.
摘要:
Compositions, methods of using the compositions, and solid freeform fabrication (SFF) systems for producing three-dimensional objects are disclosed. One exemplary composition, among others, includes a basic component, an acidic component, at least one monoacrylate component, a light sensitive initiator, and a polar binder. A polymerization reaction between the at least one monoacrylate component and the light sensitive initiator occurs upon exposure to optical energy. The polar binder includes a viscosity modifier and a surface tension modifier. The polar binder is capable of stimulating a crosslinking reaction between the basic component and the acidic component.
摘要:
The present invention is drawn to solid freeform fabrication systems and methods for producing three-dimensional objects. The system can include build material configured to be deposited in layers to form a three-dimensional object; and support material configured to be deposited adjacent to the build material for supporting the build material during formation of the three-dimensional object. The support material can also be configured to form a feature that imparts a predetermined property within the three-dimensional object.
摘要:
The present invention is drawn toward systems and methods for free-form fabrication of solid three-dimensional objects. In one embodiment, a solid free-form fabrication system for producing a three-dimensional object can comprise a dispensing system adapted to dispense a build material having nanofiller particulates dispersed therein; and a curing system adapted to harden the build material after being dispensed. In another embodiment, a method for producing a three-dimensional object can comprise steps of a) forming a jettable build composition including build material having nanofiller particulates dispersed therein; b) jetting a portion of the build composition to form a build layer; c) curing the build layer; and d) repeating steps b) and c), wherein multiple build layers are contacted and accrued to form a three-dimensional object.
摘要:
A method for solid free-form fabrication of a three-dimensional object includes depositing a particulate blend in a defined region, the particulate blend including reactive glass ionomer particulates, cross-linkable polyacid particulates including polyvinyl pyrrolidone-co-polyacrylic acid, and nanocomposites, ink-jetting an aqueous phase binder onto a predetermined area of the particulate blend to form hydrated cement in the predetermined area, and hardening the hydrated cement.
摘要:
The present invention is drawn toward compositions, methods, and systems for solid free-form fabrication of three-dimensional objects. In one embodiment, a system for solid free-form fabrication of three-dimensional objects can comprise a particulate composition, a substrate configured for supporting at least a layer of the particulate composition in a defined region, and a liquid phase binder configured for being jetted in the defined region to polymerize at least a portion of the particulate composition to form a polymeric cement. Using this system in a layer by layer deposition process, three-dimensional objects can be formed. The particulate composition can include from 70 wt % to 99.9 wt % of polymeric particulates, and from 0.1 wt % to 10 wt % of a polymerization initiator. The liquid phase binder can include from 70 wt % to 90 wt % of polymerizable monomers and from 0.1 wt % to 10 wt % of a polymerization accelerator.
摘要:
A method for solid free-form fabrication of a three-dimensional object includes depositing a particulate blend in a defined region, the particulate blend including reactive glass ionomer particulates, cross-linkable polyacid particulates including polyvinyl pyrrolidone-co-polyacrylic acid, and nanocomposites, ink-jetting an aqueous phase binder onto a predetermined area of the particulate blend to form hydrated cement in the predetermined area, and hardening the hydrated cement.