A process for improving weavability of a yarn is described. The process has a step of application of a chitosan-containing reinforcement product and a later chitosan crosslinking step.

A process for improving weavability of a yarn is described. The process has a step of application of a chitosan-containing reinforcement product and a later chitosan crosslinking step.

The present invention relates to a method for manufacturing a graphene fiber and a graphene fiber manufactured thereby, comprising the following steps: a) preparing a dispersion liquid by dispersing graphene with a surfactant in a solvent; b) preparing a composite fiber by mixing the dispersion liquid with a polymer solution, wet spinning and drying same; and c) removing polymers by heat-treating or treating the composite fiber with strong acid. The graphene fiber manufactured by the method has superior electric and mechanical properties, is flexible, and can be utilized as a storage medium for energy, hydrogen, etc. due to porosity from having a wrinkled structure.

The present invention relates to an electroconductive polymer fiber having an integrated electroconductive layer on at least a part of its surface. Since the electroconductive layer of the present invention is integrally formed on the core layer of the fiber, the electroconductive polymer fiber has excellent bending resistance. The fabric comprising the electroconductive polymer fiber of the present invention retains the electrical conductivity even after repeated washing and bending. The electroconductive polymer fiber of the present invention can be used for antistatic products, electromagnetic shielding materials or stealth materials.

The present invention relates to an electroconductive polymer fiber having an integrated electroconductive layer on at least a part of its surface. Since the electroconductive layer of the present invention is integrally formed on the core layer of the fiber, the electroconductive polymer fiber has excellent bending resistance. The fabric comprising the electroconductive polymer fiber of the present invention retains the electrical conductivity even after repeated washing and bending. The electroconductive polymer fiber of the present invention can be used for antistatic products, electromagnetic shielding materials or stealth materials.

The present invention relates to an electroconductive polymer fiber having an integrated electroconductive layer on at least a part of its surface. Since the electroconductive layer of the present invention is integrally formed on the core layer of the fiber, the electroconductive polymer fiber has excellent bending resistance. The fabric comprising the electroconductive polymer fiber of the present invention retains the electrical conductivity even after repeated washing and bending. The electroconductive polymer fiber of the present invention can be used for antistatic products, electromagnetic shielding materials or stealth materials.

The invention relates to a method for the treatment of silicon carbide fibers, comprising a step involving the chemical treatment of fibers with an aqueous acid solution containing hydrofluoric acid and nitric acid but free of acetic acid in order to remove the silica present on the surface of fibers and to form a layer of microporous carbon. The invention also relates to a method for the production of a fibrous preform, comprising the formation of a fibrous structure comprising treated silicon carbon fibers and the use of said preform for the production of a part made from composite material.

The invention relates to a method for the treatment of silicon carbide fibers, comprising a step involving the chemical treatment of fibers with an aqueous acid solution containing hydrofluoric acid and nitric acid but free of acetic acid in order to remove the silica present on the surface of fibers and to form a layer of microporous carbon. The invention also relates to a method for the production of a fibrous preform, comprising the formation of a fibrous structure comprising treated silicon carbon fibers and the use of said preform for the production of a part made from composite material.

A process for obtaining chemical building blocks from fabric material containing cellulose fibres such as cotton, as well as polyester fibre material, polyethylene or polypropylene fibre material, polyamide fibre material, or elastane fibre material. Said process comprises hydrolysing cellulose by a process that does not affect polyester, the polyolefins, polyamide fibre material, or elastane fibre material, and converting the hydrolysed cellulose into a useful chemical building block.

A process for obtaining chemical building blocks from fabric material containing cellulose fibres such as cotton, as well as polyester fibre material, polyethylene or polypropylene fibre material, polyamide fibre material, or elastane fibre material. Said process comprises hydrolysing cellulose by a process that does not affect polyester, the polyolefins, polyamide fibre material, or elastane fibre material, and converting the hydrolysed cellulose into a useful chemical building block.