摘要:
The invention concerns a profiled part and aggregates for making same. The aggregates contain a material for plastic matrix technique and an adherence promoter. Regenerated cellulose fiber elements are incorporated in the matrix material. The characteristic profile of a profiled part made from such aggregates corresponds substantially to that of profiled PC/ABS parts, the profiled part of the invention being, however, capable of being produced at a more advantageous cost, being more recyclable and being, moreover, capable of being shaped at lower temperatures.
摘要:
A process for manufacturing free-flowing pellets based on cellulosic spun fibers. The process includes a) wetting at least one cellulosic spun-fiber strand with a preferably aqueous dispersion of a polymer and/or an oligomer for the purpose of applying sizing, b) drying the at least one spun-fiber strand, and c) comminuting the at least one spun-fiber strand into pellets. The free-flowing pellets are made from at least one comminuted spun-fiber strand having sizing made from a polymer and/or an oligomer. A fiber-reinforced thermoplastic includes finely distributed free-flowing pellets for manufacturing fiber-reinforced performs.
摘要:
In a method for connecting an electrical conductor to an electrical contact part, wherein the contact part has deformable legs the legs are deformed by means of a bending die in such a way that the legs press the conductor with the contact part in a force-locked manner, wherein the contact part is acted upon in so that at least the legs are materially connected to each other. A device includes a bending die for connecting an electrical conductor to an electrical contact part, wherein the contact part has deformable legs and the bending die is designed to deform the legs in such a way that the legs press the conductor with the contact part in a force-locked manner, and wherein the device also includes a laser welding device designed to act on the contact part so that at least the legs are materially connected to each other.
摘要:
The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in at least one ionic liquid. Furthermore, the invention relates to a method for the production of blown films in which a solution of cellulose carbamate in an ionic liquid is extruded into a coagulation bath, and also to the films produced with the method and the use thereof.
摘要:
The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibers according to the wet- or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibers.
摘要:
The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in an ionic liquid. The invention relates furthermore to a method for the production of nonwovens in which the cellulose carbamate spinning solution is pressed through the holes of a nozzle bar and stretched by a multiple by means of an air flow. The formed fiber curtain is laid on a perforated conveyer belt, washed and dried. Likewise, the invention relates to nonwovens of this type and also the use thereof.
摘要:
A lignin derivative is produced from a lignin with the empirical formula L(OH)z, where L is a lignin without hydroxyl groups, OH are free hydroxyl groups bonded to L, and z is 100% of the free hydroxyl groups bonded to L. The lignin derivative has free hydroxyl groups that are derivatized with divalent residues Rx and monovalent residues Ry that are bonded to L via an ester, ether, or urethane group. A shaped body comprising the lignin derivative can take the form of a fiber, e.g. as precursor fiber for the production of a carbon fiber. A carbon fiber can be produced from the above-mentioned precursor fiber.
摘要:
The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in an ionic liquid. The invention relates furthermore to a method for the production of nonwovens in which the cellulose carbamate spinning solution is pressed through the holes of a nozzle bar and stretched by a multiple by means of an air flow. The formed fibre curtain is laid on a perforated conveyer belt, washed and dried. Likewise, the invention relates to nonwovens of this type and also the use thereof.
摘要:
In a method for connecting an electrical conductor to an electrical contact part, wherein the contact part has deformable legs the legs are deformed by means of a bending die in such a way that the legs press the conductor with the contact part in a force-locked manner, wherein the contact part is acted upon in so that at least the legs are materially connected to each other. A device includes a bending die for connecting an electrical conductor to an electrical contact part, wherein the contact part has deformable legs and the bending die is designed to deform the legs in such a way that the legs press the conductor with the contact part in a force-locked manner, and wherein the device also includes a laser welding device designed to act on the contact part so that at least the legs are materially connected to each other.
摘要:
The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibres according to the wet- or air-gap spinning method, in which a solution of lignin and a fibre-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibres.