36results about How to "Drafting smoothly" patented technology

The invention relates to a kind of wool polyester graphene elastic cloth, the warp yarn of the wool polyester graphene elastic cloth adopts 40wt% 66S wool and 60wt% graphene wool type polyester fiber, the weft yarn of the wool polyester graphene elastic cloth adopts 40wt% 66S wool, 40wt% graphene wool type polyester fiber and 20wt% PTT fiber, the yarn count of warp and weft is 72Nm / 2, and the wool polyester graphene stretch cloth is blended by warp and weft; also disclosed Its production method includes the following steps: dyeing→rewashing→recombing→pre-spinning→spinning→warping→drawing and reeding→weaving→measurement→grey cloth inspection→raw repair→finishing→finished product. The advantage of the present invention is that the product is made of wool, graphene-modified PET fiber and PTT fiber as main raw materials, processed through processes such as stripe dyeing, spinning, weaving, and finishing, and is processed through combing, spinning, and finishing processes. The optimization of the yarn improves the uniformity of the yarn and the quality of the product, and the product has antistatic and anti-ultraviolet properties.

The invention provides a manufacturing method for a polyacrylonitrile-based carbon fiber. The third monomer of a protofilament spinning raw material polyacrylonitrile resin is itaconic acid, a spinning solution is prepared from the resin by using an aqueous solution of NaSCN, and spinning and solidification are carried out so as to prepare a nascent fiber. The nascent fiber successively undergoes the following procedures: water bath drafting in the aqueous solution of NaSCN; drip washing with deionized water; dipping in an acidic aqueous solution; dipping in a sodium hydroxide or potassium hydroxide aqueous solution; water bath drafting in pure water; and rinsing with deionized water until rinsing liquid is neutral and sodium or potassium ions cannot be measured, and continued rinsing for 5 to 15 min. A carbon fiber protofilament is prepared by subjecting the nascent fiber to post-processing procedures like oiling and dry densification. The protofilament undergoes pre-oxidation in an aerobic atmosphere under the condition of drafting and then undergoes carbonization in an anoxic atmosphere under the condition of drafting so as to obtain a finished product of the polyacrylonitrile-based carbon fiber.

The invention provides a preparation method for a polyacrylonitrile-based carbon fiber. The third monomer of a spinning raw material of a carbon fiber protofilament, i.e., polyacrylonitrile resin, is itaconic acid; a spinning solution is prepared from the resin by using an aqueous solution of NaSCN, and spinning and solidification are carried out so as to prepare a nascent fiber. The nascent fiber successively undergoes the following procedures: water bath drafting in the aqueous solution of NaSCN; drip washing with deionized water; dipping in a buffer solution containing acid A and salt B, wherein A is sulfuric acid, hydrochloric acid or nitric acid, and B is a sodium salt or a sylvite of A; water bath drafting in pure water; and hot bath rinsing with deionized water until rinsing liquid is neutral and sodium or potassium ions cannot be measured, and continued rinsing for 5 to 15 min. The carbon fiber protofilament is prepared by subjecting the nascent fiber to post-processing procedures like oiling and dry densification. The protofilament undergoes pre-oxidation in an aerobic atmosphere under the condition of drafting and then undergoes carbonization in an anoxic atmosphere under the condition of drafting so as to obtain a finished product of the polyacrylonitrile-based carbon fiber.

A preparation method of a composite monofilament for netting gear manufacture. The invention employs a mixer, a double-screw extruder, a single-screw extruder, a secondary drafting electric heating draw machine, a winding machine using a torque motor, a filament splitting machine, a spinning grade drying HDPE resin, nanometer drying Al2O3 and a turpentine assistant for spinning. The preparation method is characterized by comprising the steps of: mixing the spinning grade drying HDPE resin, the nanometer drying Al2O3 and the turpentine assistant for spinning; subjecting the mixture to two times of extrusion granulation by the twin-screw extruder to obtain blend pellets; subjecting the blend pellets to melt extrusion by the single-screw extruder; subjecting the primary composite monofilament obtained from melt extrusion to cooling and a preliminary drafting; subjecting the composite monofilament from preliminary drafting to two times of hot drafting, then high-pressure airflow oil removal and fast cooling; winding the composite monofilament by the winding machine using torque motor; and splitting the composite monofilament by the filament splitting machine into a matrix composite monofilament for low carbon netting gear manufacture.

The invention provides a manufacturing method for a polyacrylonitrile-based carbon fiber. The third monomer of a protofilament spinning raw material, i.e., polyacrylonitrile resin, is itaconic acid; a spinning solution is prepared from the resin by using DMSO or DMAc, and spinning and solidification are carried out so as to prepare a nascent fiber. The nascent fiber successively undergoes the following procedures: water bath drafting in an aqueous solution of a spinning solvent; drip washing with deionized water; dipping in an acidic aqueous solution for 2 to 10 min; dipping in a sodium hydroxide or potassium hydroxide aqueous solution for 1 to 5 min; water bath drafting in pure water; and hot bath rinsing with deionized water until rinsing liquid is neutral and sodium or potassium ions cannot be measured, and continued rinsing for 5 to 15 min. A carbon fiber protofilament is prepared by subjecting the nascent fiber to post-processing procedures like oiling and dry densification. The protofilament undergoes pre-oxidation in an aerobic atmosphere under the condition of drafting and then undergoes carbonization in an anoxic atmosphere under the condition of drafting so as to obtain a finished product of the polyacrylonitrile-based carbon fiber.

Disclosed is a fabrication method for round filaments for producing grouper culture nets. Auxiliaries, high-density polyethylene (HDPE) resins, metallocene linear low density polyethylene (LLDPE) resins, a stirring machine, a single-screw extruder, a twice-drawing electrical heating drawing machine, a filament winding machine and a filament split machine. The method is characterized in that the auxiliary adding amount is 0.36% to 0.47% of the weight of the HDPE resins, the HDPE resin melt index should meet 0.8 grams / 10minutes to 1.3 grams / 10minutes, and the metallocene LLDPE resin adding amount is 14.3% to 15.7% of the weight of the HDPE resins. The auxiliaries, the HDPE resins and the metallocene LLDPE resins are mixed and stirred uniformly to obtain HDPE / metallocene LLDPE resin mixtures which are fused extruded through the single-screw extruder, the fused extruded primary filaments are cooled and pre-drawn, the pre-drawn filaments are subjected to twice thermal drawing and are wound into round filament beams after un-oiled through high-pressure air flows. The round filament beams are split into round filaments for producing grouper culture nets by the filament split machine.

The present invention discloses a method for processing high-performance modified polyethylene monofilaments for manufacturing a fishing net, relates to a method for processing polyethylene monofilaments for manufacturing a fishing net and aims to provide a method for processing the high-performance modified polyethylene monofilaments for manufacturing the fishing net. In the technical scheme of the invention, a stirring machine, a single-screw extruder, a twice-drafting electrical heating drafting machine, a filament winding machine and a filament separating machine are adopted. The method is characterized by comprising the following steps of: mixing a sieved spinning-grade dry HDPE resin, a dry VERSIFYTM 6002 elastomer, white oil or a turpentine aid; uniformly mixing the materials to obtain an HDPE / VERSIFYTM 6002 elastomer blend and fusing and extruding the blend by using the single-screw extruder; cooling and pre-drafting fused and extruded primary filaments, thermally drafting the pre-drafted filaments twice, rapidly cooling the thermally-drafted filaments from which oil is removed with high-pressure air current and winding modified PE monofilaments by using the winding machine; and separating the modified PE monofilaments into the high-performance modified polyethylene monofilaments for manufacturing the fishing net by using the filament separating machine.

The invention provides a manufacturing method of fibers of breeding nets of sea fish. The manufacturing method adopts HDPE (high-density polyethylene) resin, an auxiliary agent, metallocene LLDPE (linear low density polyethylene) resin, a stirring machine, a single-screw extrusion machine, a twice-drawing electrical heating drawing machine, a silk collecting machine and a silk dividing machine. The manufacturing method is characterized in that the HDPE resin is sieved; the adding amount of the auxiliary agent is 0.6% of the weight of the HDPE resin; the adding amount of the metallocene LLDPE resin is 10.3% of the weight of the HDPE resin; the materials are stirred by the stirring machine for 19-31 minutes, so that the materials are uniformly stirred, and a mixture of the HDPE resin and the metallocene LLDPE resin is obtained; melt extrusion is performed on the mixture of the HDPE resin and the metallocene LLDPE resin by the single-screw extrusion machine, and primary silk obtained from melt extrusion is cooled and pre-drawn by a cooling water box and a first drawing roller; twice hot drawing is performed on the pre-drawn silk, the drawn silk is degreased by a high-pressure airflow, the degreased silk is rapidly cooled, and fiber bundles are collected and rolled by the silk collecting machine; the fiber bundles are divided into the fibers of the breeding nets of the sea fish by the silk dividing machine.