Abstract: Fiber-reinforced composite (e.g., for portable electronic devices), and methods of molding such fiber-reinforced composite parts. Such a fiber-reinforced composite part comprises one or more fiber layers and a plurality of ceramic particles within a polymer matrix such that ceramic particles and polymer are disposed above and below each of the fiber layer(s), with the ceramic particles comprising from 30% to 90% by volume of the composite part, the polymer matrix comprising from 6% to 50% by volume of the composite part, and the fiber layer(s) comprising from 1% to 40% by volume of the composite part; the ceramic particles having a Dv50 of from 50 nanometers to 100 micrometers; the ceramic particles being substantially free of agglomeration; and the composite part having a relative density greater than 90%.

Abstract: The present disclosure includes thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings. Some laminates include an inner section having one or more first laminae and one or more second laminae, and first and second outer sections disposed on opposing sides of the inner section, each having one or more third laminae The laminate has a width and a length that is perpendicular to the width. Each of the first lamina(e) can have fibers aligned in a direction parallel to the length, each of the second lamina(e) can have fibers aligned in a direction parallel to the width, and each of the third lamina(e) can have fibers aligned in a direction angnlarly disposed at an angle of at least 10 degrees to each of the length and the width.

Abstract: Provided are thermoplastic-nanoparticle compositions that exhibit enhanced powder and melt flow. The disclosed compositions, comprising nanoparticles being silylated, have particular application in additive manufacturing processes, such as selective laser sintering and other processes.

Abstract: Described herein are cold-sintered ceramic polymer composites and processes for making them from ceramic precursor materials and monomers and/or oligomers. The cold sintering process and wide variety of monomers permit the incorporation of diverse polymeric materials into the ceramic.

Abstract: A method of preparing a partially crystalline polycarbonate powder, including: dissolving an amorphous polycarbonate in a halogenated alkane solvent to form a solution; combining the solution with a crystallizing non-solvent that is miscible with the halogenated alkane solvent, under high shear mixing conditions effective to form a partially crystalline polycarbonate precipitate having a D90 particle size of less than 150 micrometers; an average particle diameter of less than or equal to 100 micrometers, or an average particle diameter of 0 to 100 micrometers; and at least 20% crystallinity, or at least 25% crystallinity, or 25 to 35% crystallinity.

Abstract: A method of making an article includes converting a first amorphous polymer to an at least partially crystalline polymeric powder composition and powder bed fusing the at least partially crystalline polymer powder composition to form a three-dimensional article including a second amorphous polymer.

Abstract: In an embodiment, a fiber reinforced composite can comprise a dynamically crosslinked polymer network comprising a polyester matrix and a plurality of crosslinks; a transesterification catalyst; and a fabric layer. A method of making the composite can comprise coating the fabric layer with a composition comprising a pre-crosslinked polymer composition to form a coated fabric; and melt impregnating the coated fabric with the pre-crosslinked polymer composition to form a pre-impregnated composite; and curing the pre-crosslinked polymer composition to form the dynamically crosslinked polymer network.

Abstract: Methods for preparing pre-dynamic cross-linked polymer compositions are described. Methods of preparing dynamic cross-linked polymer compositions using pre-dynamic cross-linked polymer compositions are also described.

Abstract: Described herein are cold-sintered ceramic polymer composites and processes for making them from ceramic precursor materials and monomers and/or oligomers. The cold sintering process and wide variety of monomers permit the incorporation of diverse polymeric materials into the ceramic.

Abstract: Described herein are cold-sintered ceramic polymer composites and processes for making them from inorganic compound starting materials and polymers. The cold sintering process and wide variety of polymers permit the incorporation of diverse polymeric materials into the ceramic.

Abstract: Provided are thermoplastic-nanoparticle compositions that exhibit enhanced powder and melt flow. The disclosed compositions, comprising nanoparticles being silylated, have particular application in additive manufacturing processes, such as selective laser sintering and other processes.

Abstract: A method of preparing a partially crystalline polycarbonate powder, including: dissolving an amorphous polycarbonate in a halogenated alkane solvent to form a solution; combining the solution with a crystallizing non-solvent that is miscible with the halogenated alkane solvent, under high shear mixing conditions effective to form a partially crystalline polycarbonate precipitate having a D90 particle size of less than 150 micrometers; an average particle diameter of less than or equal to 100 micrometers, or an average particle diameter of 0 to 100 micrometers; and at least 20% crystallinity, or at least 25% crystallinity, or 25 to 35% crystallinity.

Abstract: Methods for preparing pre-dynamic cross-linked polymer compositions are described. Methods of preparing dynamic cross-linked polymer compositions using pre-dynamic cross-linked polymer compositions are also described.

Abstract: Described herein are polymer compositions comprising a matrix polymer component comprising a dynamic cross-linked polymer composition; and a fibrillated fluoropolymer, a fibrillated fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. Methods of making and using these polymer compositions are also described.

Abstract: A method of making an article, the method comprising converting a first amorphous polymer to an at least partially crystalline polymeric powder composition and powder bed fusing the at least partially crystalline polymer powder composition to form a three-dimensional article comprising a second amorphous polymer.

Abstract: The disclosure is directed to the use of dynamic cross-linked polymer compositions in soldering applications. Workpieces comprising a solder bonded to at least one component comprising a dynamic cross-linked polymer composition are also described.

Abstract: Disclosed herein are methods and compositions of blended polycarbonate compositions with simultaneously decreased splay and improved impact characteristics. The resulting compositions, comprising one or more polycarbonate polymers, a splay reducer, and a filler, can be used in the manufacture of articles while still retaining the advantageous physical properties of blended polycarbonate compositions with decreased splay. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Methods for preparing pre-dynamic cross-linked polymer compositions are described. Methods of preparing dynamic cross-linked polymer compositions using pre-dynamic cross-linked polymer compositions are also described.

Abstract: Methods of thermoforming dynamic cross-linked polymer compositions are described.

Abstract: Disclosed herein are methods and compositions of blended polycarbonate compositions with simultaneously decreased splay and improved impact characteristics. The resulting compositions, comprising one or more polycarbonate polymers, a splay reducer, and a filler, can be used in the manufacture of articles while still retaining the advantageous physical properties of blended polycarbonate compositions with decreased splay. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.