摘要:
An apparel textile yarn includes a polyamide. The polyamide includes a nylon and a polyetheramine. The polyetheramine has a molecular weight of at least 1500 and an Amine Hydrogen Equivalent Weight (AHEW) of less than 10 percent higher than the idealized AHEW for the polyetheramine. The polyamide may have a moisture regain ranging from about 10% to about 30%.
摘要:
A method for controlling the temperature of a polymer melt in an extrusion tool includes flowing the polymer melt via at least one flow channel from an input to an output and around at least one temperature-control element in the at least one flow channel. The temperature control element includes a plurality of temperature control units. The temperature of the polymer melt flowing around the temperature-control element is controlled by individually controlling each of the temperature-control units so as to vary a degree of temperature control of the temperature-control element such that a degree of temperature control is controllable to be the same or different at locations throughout the temperature control-element.
摘要:
A method of fabricating a gas separation membrane includes providing a coextruded multilayer film that includes a first polymer layer formed of a first polymer material and a second polymer layer formed of a second polymer material, the first polymer material having a first gas permeability. The coextruded multilayer film is axially oriented such that the second polymer layer has a second gas permeability that is greater than the first gas permeability.
摘要:
A method of fabricating a gas separation membrane includes providing a coextruded multilayer film that includes a first polymer layer formed of a first polymer material and a second polymer layer formed of a second polymer material, the first polymer material having a first gas permeability. The coextruded multilayer film is axially oriented such that the second polymer layer has a second gas permeability that is greater than the first gas permeability.
摘要:
A method of manufacturing a three-dimensional netted structure by (a) extruding molten filaments of a thermoplastic resin downward from a die via a mouthpiece of the die having a plurality of holes such that the filaments drop under the force of gravity in between drawing-down units, (b) drawing down the assembly of extruded filaments at a speed lower than the filament dropping speed by the drawing-down units, and (c) cooling the resultant filaments with a liquid. The drawing-down units are submerged or partly-submerged in a liquid. The distance between the drawing-down units is smaller than the width of an assembly of the extruded filaments. Four surfaces of the assembly of the filaments are contacting the drawing-down units before or after the drawing-down units are submerged.
摘要:
Material processing systems are disclosed. Some systems include methods of eliminating or reducing defects in elongate workpieces that can undergo large deformations during processing. Some systems include apparatus configured to facilitate such large deformations while maintaining internal stresses (e.g., tensile stresses) below a threshold stress. Some disclosed systems pertain to powder extrusion techniques. Continuous and batch processing systems are disclosed.
摘要:
The present invention relates to a polylactic acid with improved impact strength, comprising, by weight: 60% to 97% of polylactic acid (PLA), and 3% to 40% of a mixture of compounds A and B in which: A is a copolymer of ethylene and of an unsaturated monomer bearing at least one epoxide or carboxylic acid or carboxylic acid anhydride function, and optionally of alkyl (meth)acrylate, B is a copolymer of ethylene and of alkyl (meth)acrylate, said mixture having a weight % (A)/weight % (A+B) ratio of between 0.10 and 0.49. The present invention also relates to the manufacture of components or objects from these compositions.
摘要:
A sustainable material suitable for three-dimensional printing is disclosed. The sustainable material comprises a resin derived from a bio-based diacid monomer and a bio-based glycol monomer. The resulting sustainable material provides a much more robust 3-D printing material with different properties than conventional materials.
摘要:
A method for producing a rubber wet master batch contains a coagulating step of mixing a slurry solution containing the filler and the dispersing solvent with the rubber latex solution, and coagulating the mixture, thereby producing a filler-containing rubber coagulation, and a heating step of using a uniaxial extruder to heat the filler-containing rubber coagulation to a temperature of 180 to 200 C, thereby dehydrating, drying and plasticizing the filler-containing rubber coagulation through a single step. The uniaxial extruder is an extruder having a screw, and an outer cylinder having an inner wall surface in which a slit is formed to be extended along the longitudinal direction of the outer cylinder (screw axial direction); and at least one portion of the inner wall surface of the outer cylinder is subjected to blasting treatment.