摘要:
The present invention relates to a fiber production system (1) and production method which enables heat treatment applied during fiber production to be performed as applying laser on the fiber. The objective of the present invention is to provide a fiber production system (1) and production method which enables to perform momentary heat treatment on the filament (F) via laser beam (L) and which eliminates defected points in the filament structure by heating fast and drawing in fiber production.
摘要:
Nonflammable fibers are produced by subjecting a composite fiber comprising a pitch and a synthetic organic polymer bonded uniformly along the longitudinal direction of the fiber to an oxidation treatment to render it infusible and then to a set treatment in air or gaseous nitrogen at a temperature of 200* to 500* C. for at least 2 hours. The nonflammable fiber is converted to carbon fiber by heating to a temperature higher than 800* C. in gaseous nitrogen. Suitable pitches include petroleum asphalt, coal tar pitch, and pitch obtained by baking polyvinyl chloride. Suitable synthetic organic polymers include polyamides, polyesters, polyolefins, polyvinyl chloride, polyvinylidene chloride, polyurethane, epoxy resins, and phenol resins.
摘要:
A process for the production of carbon fibers from coal-tar pitch or from other strongly aromatic distillation residues wherein an oxygen-containing polymer is added to the starting material before or during the heat treatment which is followed by the usual stages of spinning, oxidizing and carbonizing.
摘要:
MANUFACTURE OF CARBON SHAPED ARTICLE HAVING GAS IMPERMEABILITY, HIGH HARDNESS, AND HIGH MECHANICAL STRENGTH BY MIXING ORGANIC FIBER HAVING PARTICULAR PHYSICAL PROPERTIES WITH ORGANIC BINDER, OR A MIXTURE OF THE ORGANIC BINDER AND AN AGGREGATE, AND HEAT-TREATING THE MIXED MATERIAL.
摘要:
The present invention relates to compositions comprising esterified lignin and poly(lactic acid). In various embodiments, the present invention provides fibers comprising the esterified lignin and poly(lactic acid) blend, carbon fibers made therefrom, and methods of making the fiber and the carbon fibers.
摘要:
A process for producing a hollow carbon or ion-exchange filament which comprises treating a filament consisting of a fiber-forming polymer of predominantly an uncured novolak resin composition with a curing reagent in the presence of a curing catalyst to effect the cure of the filament extending from the peripheral portion to the axial portion thereof to a depth of 20-90% of the cross-sectional area of the filament, removing the uncured core portion of the filament by extraction with a solvent, and then subjecting the resulting hollow novolak resin filament to a carbonization treatment or introducing an ion-exchangeable group into the resulting hollow novolak resin filament; and products produced by this process.
摘要:
The present invention relates to compositions comprising esterified lignin and poly(lactic acid). In various embodiments, the present invention provides fibers comprising the esterified lignin and poly(lactic acid) blend, carbon fibers made therefrom, and methods of making the fiber and the carbon fibers.
摘要:
A hollow filament comprising a filamentary polymer composed predominantly of a flame-resistant and anti-fusing cured novolak resin, characterized in that the hollow structure continuously extends in the axial direction of the filament, the degree of hollowness thereof being in the range of 10 - 80%, and a process for producing the same which comprises treating a filament consisting of a fiber-forming polymer of predominantly an uncured novolak resin composition, with a curing reagent in the presence of a curing catalyst to effect the cure of said filament extending from the peripheral portion to the axial portion thereof to a depth of 20-90% of the cross-sectional area of the filament, and thereafter removing the uncured core portion of said filament by extraction with a solvent.
摘要:
A carbon fiber layer having a carbon coating is provided. The disclosed carbon fiber layer having a carbon coating includes: a carbon fiber layer in which a plurality of carbon fibers are arrayed; and a thin carbon film layer, comprising carbon, coated on the surface of the carbon fiber layer.
摘要:
The present invention relates to compositions comprising esterified lignin and poly(lactic acid). In various embodiments, the present invention provides fibers comprising the esterified lignin and poly(lactic acid) blend, carbon fibers made therefrom, and methods of making the fiber and the carbon fibers.