Abstract:
The present invention relates to an equipment adapted to create filaments comprising heat sensitive polymers or being intended to be combined with heat sensitive materials, such as in a coforming process. A piping system connecting the extruder with the spin block comprises at least a section exhibiting a non-circular cross-section.
Abstract:
The present invention relates to a method for assembling particles having a long axis, a short axis and an average aspect ratio of 10-10,000. The method includes agitating a combination of a first solution, a second solution and the particles in any order to form a mixture wherein one of the first solution and the second solution is in the form of droplets dispersed in the other of the first solution and the second solution and the long axis of the particles is longer than a diameter of the droplets in the mixture, and continuing the agitation until the particles assemble into aggregates of particles with at least 30% of the particles aligned in parallel along the long axis. Aggregate or aggregate composites form by the method are also described.
Abstract:
본 발명은 그래핀산화물 또는 그래핀을 용매에 분산시켜 방사용액을 준비하는 단계; 상기 방사용액이 토출되는 방향으로 전기장이 인가된 상태에서 응고욕에 습식 방사시켜 겔 섬유를 제조하는 단계; 및 상기 겔 섬유를 건조하는 단계를 포함하는, 그래핀산화물 섬유 또는 그래핀 섬유 제조 방법을 제공한다.
Abstract:
산화그래핀(graphene oxide)을 포함하는 소스 용액을 준비하는 단계, 이종 원소를 포함하는 베이스 용액으로 상기 소스 용액을 방사하여 산화그래핀 섬유를 제조하는 단계, 상기 베이스 용액으로부터 상기 그래핀 섬유를 분리, 세척, 및 건조하여, 상기 이종 원소를 포함하는 산화그래핀 섬유를 수득하는 단계, 및 건조된 상기 이종 원소를 포함하는 산화그래핀 섬유를 열처리(thermal treatment)하여, 상기 이종 원소가 도핑된 그래핀 섬유를 제조하는 단계를 포함하되, 상기 소스 용액의 농도 및 방사 속도에 따라, 상기 그래핀 섬유의 신장률(elongation percentage)이 조절되는 것을 포함하는 그래핀 섬유의 제조 방법이 제공될 수 있다.
Abstract:
The invention relates to a method for producing synthetic fibres from a melt blend that is based on fibre-forming matrix polymers. According to said method, at least one second amorphous additive polymer is added to the fibre-forming matrix polymers, said additive polymer being incompatible with the fibre-forming matrix polymer, in a quantity of 0.05 to 5 wt.- %, relative to the combined total weight of fibre-forming matrix polymer and the additive polymer with which it is incompatible. The method is characterized in that an additive polymer, which can be obtained by multiple initiation, is added. The invention also relates to synthetic fibres obtained by said method and to the further processing of the same.
Abstract:
The present disclosure is directed to a method of forming a treated fiber. A molten polymer is delivered to a fiber spinning assembly adapted to form and distribute polymer streams. At least one treatment is applied in a liquid state to at least one region on the surface of at least one molten polymer stream within the fiber spinning assembly. A substantial portion of the treatment remains on the surface of the resulting fiber within the treated region. One or more regions on the surface of the molten polymer may be treated with one or multiple treatments. The degree of coverage may vary from little coverage to complete coverage of the fiber surface. The treated regions may be in contact with one another or may be separate and distinct. A nonwoven web may be produced with selectively treated fiber regions by designing one or more fiber spinning assemblies to treat selected fibers or to apply multiple treatments. The regions of the nonwoven web may vary in treatment type, amount, or degree of coverage.
Abstract:
Die Erfindung betrifft einen Adapterplatte (5) zum Anschließen von einer Spinnpumpenvorrichtung (4, 4.1) und von einer Leitung zum Fördern eines Spinnfluids für synthetische Fasern, wobei die Adapterplatte (5) eine erste Anschlussseite (51) und eine zu der ersten Anschlussseite verschiedene zweite Anschlussseite (53) definiert und an der ersten Anschlussseite ein Leitungsanschlussabschnitt (75) zum fluiddichten Anschließen der Leitung und ein Spinnpumpenanschlussabschnitt (400, 401) zum fluiddichten Anschließen der Spinnpumpenvorrichtung ausgebildet ist, wobei an der zweiten Anschlussseite ein zweiter Spinnpumpen-Anschlussabschnitt (400, 402) zum fluiddichten Anschließen einer zweiten Spinnpumpenvorrichtung (4.2) ausgebildet ist und ein Pumpensystem mit der Adapterplatte.
Abstract:
The present disclosure relates generally to a process for producing polymer fibers, typically polyacrylonitrile-based fibers, the morphology of which is controlled by the use of a polymer additive to form a polymer blend with polyacrylonitrile, which is then subjected to certain coagulation and washing conditions. The present disclosure also relates to carbon fibers produced by processing the polymer fibers made.
Abstract:
The present disclosure relates to a process for producing homogeneous solutions comprising dissolved polyacrylonitrile-based polymer, and a system suitable therefor. The homogeneous polymer solutions produced by the process described herein may be used for producing carbon fiber, typically carbon fiber used in manufacturing composite materials.
Abstract:
This invention relates to eco-friendly solutions and gels for making high strength ultra-high molecular weight polyolefin (UHMWPO) fibers, films, filters, membranes by solution and gel spinning techniques. This invention also makes soft, strong, oriented, and elastic fibers from styrenic block copolymers. The polymers are first dissolved or dispersed in a cyclic terpene. In some embodiments, the fibers are extruded or drawn from the solution or gel, and cooled to form a gel filament. In some embodiments, the fibers and films are soft and elastic by making the spinnable solution or gel from polyolefin and styrenic block copolymers or other elastomeric polymers in cyclic terpene. In some embodiments the fibers and films produced can be oriented by stretching or drawing in the gel state before and/or during and/or after removal of cyclic terpene.