Abstract: Provided are methods for making shaped fluoropolymer by additive processing using fluoropolymer particles, polymerizable binder and extraction with supercritical fluids. Also provided are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Abstract: The present disclosure provides a method of making an additive manufactured article. The method includes: a) attaching a multilayer structure (300, 500) to a build platform (210); b) selectively curing a photocurable composition (219) that is in contact with a porous layer (330, 530) of the multilayer structure, thereby forming an object attached to the porous layer; and c) separating the object from the build platform. The multilayer structure includes an adhesive layer (310, 510), an impermeable layer (320, 520) attached to the adhesive layer, and a porous layer (330, 530) attached to the impermeable layer. The adhesive layer of the multilayer structure is attached to the build platform. The present disclosure also provides an object made by the method, and the multilayer article used in the method. Use of the multilayer article assists in improving adhesion between the build platform and the object.

Abstract: Described herein is a curable composition comprising an amorphous fluoropolymer having an iodine, bromine and/or nitrile cure site; a peroxide cure system comprising a peroxide and a Type II coagent; and a photoinitiator, wherein the curable composition is substantially free of a binder material. Also described herein, are methods of curing the curable composition using actinic radiation and articles thereof.

Abstract: Provided are methods for making shaped fluoropolymer by additive processing using a polymerizable binder. Also are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Abstract: Provided are method of producing a shaped fluoropolymer articles. The methods include subjecting a composition comprising a fluoropolymer to additive processing in an additive processing device. Also provided are articles obtained with the methods and 3D-printable compositions.

Abstract: Provided are method of producing a shaped fluoroelastomer articles. The methods include subjecting a composition comprising a fluoroelastomer to additive processing in an additive processing device. Also provided are articles obtained with the methods and 3D-printable compositions.

Abstract: Methods and apparatuses (400) suitable for use in 3D-printing of gels from a solution (470) comprising a polymerizable material dispersed in a solvent are described. Such methods and apparatuses (100) include features (493) to control the relative saturation of the solvent in a gas phase region around the gel during the 3D-printing process.

Abstract: Methods and apparatuses (400) suitable for use in 3D-printing of gels from a solution (470) comprising a polymerizable material dispersed in a solvent are described. Such methods and apparuses (100) include features (493) to control the relative saturation of the solvent in a gas phase region around the gel during the 3D-printing process.

Abstract: Provided are methods for making shaped fluoropolymer by additive processing using fluoropolymer particles, polymerizable binder and extraction with supercritical fluids. Also provided are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Abstract: Described herein is a curable composition comprising an amorphous fluoropolymer having an iodine, bromine and/or nitrile cure site; a peroxide cure system comprising a peroxide and a Type II coagent; and a photoinitiator, wherein the curable composition is substantially free of a binder material. Also described herein, are methods of curing the curable composition using actinic radiation and articles thereof.

Abstract: A method includes obtaining a composition (1016) disposed on a surface of a substrate (1010), irradiating a first portion (1017a) of the composition for a first irradiation dosage, and irradiating a second portion (1017b) of the composition for a second irradiation dosage. The composition (1016) includes fluoropolymer particles and a binder material that is polymerizable upon exposure to radiation. The first portion (1017a) and the second portion (1017b) are adjacent to or overlapping with each other, and the first irradiation dosage and second irradiation dosage are different. Irradiating the first and second portions of the composition (1016) polymerizes the binder material and forms a three-dimensional article (1017) having a first portion (1017a) and a second portion (1017b) on the surface of the substrate (1010). The first portion (1017a) and second portion (1017b) of the three-dimensional article have different thicknesses in an axis normal to the surface of the substrate (1010).

Abstract: Provided is a method of producing polymer articles comprising (i) subjecting a composition to additive processing in an additive processing device containing at least one energy source wherein the composition comprises particles of a first polymer, particles of a second polymer and at least one binder material capable of binding the polymer particles to form a layer in a part of the composition that has been exposed to the energy source of the additive processing device; (ii) subjecting at least a part of the composition to exposure of the energy source to form a layer comprising the polymer particles and binder material; (iii) repeat step (ii) to form a plurality of layers to create an article; and wherein the first polymer is selected from polymers having a melting point above of at least 250° C. or a glass transition temperature (Tg) of greater than 70° C. and is not a fluoropolymer and wherein the second polymer is a fluoropolymer.

Abstract: Methods of manufacturing fuel injector nozzle structures such as, e.g., nozzle plates, valve guides, combinations of nozzle plates and valve guides, etc., as well as other articles incorporating microstructured features. The methods may employ multiphoton processes to form microstructured patterns on a three-dimensional structured surface to provide nozzle structures and other articles that include finished microstructured features such as, e.g., through-holes extending from one or more cavities, where at least a portion of the three-dimensional structured surface is used to form the cavities. Forming a microstructured pattern on a three-dimensional structured surface can reduce the time needed to form nozzle structures that include microstructured features and other nozzle structure features (e.g., cavities) by avoiding the need to form the other nozzle structure features using the multiphoton processes.

Abstract: The method of making a three-dimensional article includes heating a composition comprising a fluoropolymer and inorganic filler, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a fluoropolymer and inorganic fillers is also described. The composition may be a filament. The composition can be useful, for example, in melt extrusion additive manufacturing. The fluoropolymer is semi-crystalline with a melting point of up to 325° C. and less than 50 percent by weight interpolymerized units of vinylidene fluoride or amorphous with a glass transition temperature of up to 280° C.

Abstract: The method of making a three-dimensional article includes heating a composition comprising a polymer and hollow ceramic microspheres, extruding the composition in molten form from an extrusion head to provide at least a portion of a first layer of the three-dimensional article, and extruding at least a second layer of the composition in molten form from the extrusion head onto at least the portion of the first layer to make at least a portion of the three-dimensional article. Three-dimensional articles are also described. A composition including a polymer and hollow ceramic microspheres is also described. The composition may be a filament. The polymer is at least one of a low-surface-energy polymer or polyolefin. The composition can be useful, for example, in melt extrusion additive manufacturing, for example, fused filament fabrication.

Abstract: Provided are method of producing a shaped fluoropolymer articles. The methods include subjecting a composition comprising a fluoropolymer to additive processing in an additive processing device. Also provided are articles obtained with the methods and 3D-printable compositions.

Abstract: Provided are method of producing a shaped fluoroelastomer articles. The methods include subjecting a composition comprising a fluoroelastomer to additive processing in an additive processing device. Also provided are articles obtained with the methods and 3D-printable compositions.

Abstract: Provided are methods for making shaped fluoropolymer by additive processing using a polymerizable binder. Also are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.