A pulp fiber with an enhanced carboxyl content resulting in improved antimicrobial, anti-yellowing and absorptive properties is described. Methods for making the kraft pulp fiber and products made from it are also described.

The present invention is directed to a new polypropylene composition, polypropylene fibres comprising said polypropylene composition, a spunbonded fabric comprising said polypropylene fibres and/or polypropylene composition, an article comprising said polypropylene fibres and/or said spunbonded fabric as well as to a process for the preparation of such spunbonded fabric and the use of such polypropylene composition for improving the stability of a fibre spinning line.

A method for producing fibers with improved color and anti-microbial properties is described. One embodiment includes a method for generating a halogen stable antimicrobial synthetic fiber, the method comprising creating a mixture that includes a polymer, an anti-microbial agent, and a non-halogen pigment, and extruding the mixture to form an anti-microbial synthetic fiber.

A tube manufacturing system is provided that is capable of manufacturing tube structures that are on the nanoscale and larger. The system provides for control as to the structure and atomic makeup of the feed sheet material used and provides motive force to the sheet material being used to continuously advance the sheet material through the various system components. After the tube structures are formed, they may be used in providing a source material for manufacturing macroscopic objects thus increasing the level of performance and capabilities of such objects due to the engineered properties of the tube structures formed within this system and method of manufacturing. Processes for manufacturing of nanotubes are also disclosed, as are nanotubes manufactured by the processes and system of the invention.

Small diameter poly(phenylene ether) fibers can be consistently formed from a composition comprising specific amounts of a poly(phenylene ether), a processing aid, and optionally a poly(alkenyl aromatic). The processing aid can be LLDPE, a petroleum resin, or combinations thereof. The processing aid can optionally further comprise a phosphite or phosphonate. Flame retardants are minimized or excluded from the composition. The fibers can be melt spun without entanglement or breakage, and this improved processability enables small diameter fibers to be formed. The resulting fibers can be used in reinforcing structures for printed circuit boards.

The resin composition for melt spinning of the present invention is a filament having a melt viscosity of 250 Pa.Math.s or less at 200? C. and a shear rate of 0.1 s.sup.?1 and a tensile strength of 10 MPa or more. The filament can be produced by forming a molten liquid of a resin composition having a melt viscosity of 250 Pa.Math.s or less at 200? C. and a shear rate of 0.1 s.sup.?1 into a filament shape to provide a formed material, and conveying and concurrently cooling the formed material. The present invention also provides a resin composition for melt spinning being a filament, and a method for producing fiber using a melt spinning apparatus.

Processes for preparing ultra-high molecular weight polyethylene (UHMW PE) filaments and multi-filament yarns, and the yarns and articles produced therefrom. Each process produces UHMW PE yarns having tenacities of 45 g/denier to 60 g/denier or more at commercially viable throughput rates.

A tire including a circular tire frame formed of a resin material that includes a thermoplastic resin and fibers.

The present invention provides a graphene composite powder form material that is suitable for industrialized application. The graphene composite powder form material is composited by graphene materials and a high-molecular compound. The high-molecular compound is uniformly coated on surfaces of the graphene material. Any adjacent graphene materials are separated by the high-molecular compound. An apparent density of the graphene composite powder form material is larger than or equal to 0.02 g/cm.sup.3. Under an external pressure, the graphene materials in the graphene composite powder form material do not re-stack, and can be easily restored to original form, which benefit the storage and transportation. Besides, the graphene composite powder form material has a good compatibility in other material systems, which greatly broadens the application fields in the downstream products and successfully solves the problem in industrial application. The present invention also provides a method for making the graphene composite powder form material.

A molybdenum disulfide/graphene/carbon composite material having a hierarchical pore structure includes a composite nanofiber having a diameter of 60 to 500 nm. The composite nanofiber comprises, in mass percentage, 3% to 35% of molybdenum disulfide, 0.2% to 10% of graphene, and 60% to 95% of carbon. The composite nanofiber has a hierarchical pore structure distributed along the axial direction, and has a pore diameter continuously distributed between 0.1 nm and 5 ?m and an average pore diameter between 1.5 nm and 25 nm. On the basis of the pore volume, in the hierarchical pore structure, a micropore structure accounts for 25% to 60%, and a mesoporous structure accounts for 40% to 75%. The microporous structure is distributed on the surface of the nanofiber and the pore wall of the mesoporous structure.