58results about How to "Spinning process is stable" patented technology

The invention belongs to the technical field of electrostatic spinning and relates to a portable handheld electrostatic spinning device. The top of a pushing rod of a medical syringe is provided with a pressure welding switch, a metal foil is arranged on the top side fixedly, a spinning solution is arranged in a front end inner cavity of the medical syringe, a square battery and a high-voltage direct-current inverter are arranged fixedly on the side wall of the syringe in a butt joint mode, and a stainless steel needle head which is used for spinning is arranged at the bottom end of the syringe in an inserting mode. A conventional medical syringe needle head structure and the syringe are combined and matched, the spinning solution is stored in the inner cavity of the medical syringe which is provided with the stainless steel needle head, the square battery provides a power supply for the high-voltage direct-current inverter, when the direct current voltage is inverted, the voltage in the unit of kilovolt, the positive pole of the high-voltage direct-current inverter is communicated electrically with the stainless steel needle head, and the negative pole of the high-voltage direct-current inverter is communicated electrically with the metal foils. The device is simple in overall structure, is convenient to carry, use and operate, applicable to occasions such as outdoor teaching and wounded rescue and high in economical value.

A bushing temperature controller includes a transformer 3 which supplies a main current 11 to the bushing 2 for accommodating molten glass, and regulation current supply units 7 and 8 which are adapted to supply regulation currents I2 and I3 either in phase with the main current I1 or in phase inverted to the main current I1 to a portion of a region to which the transformer 3 applies the current. Thus, the temperature control of partial regions 2a and 2c in the region to which the current is applied can be performed in a wide temperature range.

The invention discloses the semi-continuous centrifugal spinning technology, comprising the following steps: three strand silks on one ingot, 1 in making glue procedure, viscose ripening between 8.8-13ml, interfacial force between 40-52dny, bubble below 25 / 500ml, thrice filtering, controlling candle filter particle population above 100 / 10 mum; 2 in coagulating bath procedure, glue from spinneret with acid bath forming strand silk, the acid bath temperature between 52-55Deg.C, hydric sulphate concentration between 132-136 g / l, sodium sulfate concentration between 220-265g / l, acid bath interfacial force being less than glue interfacial force, and acid bath specific density being below 1.265g / ml. Using the method meets the requirement for quality, and reaches the spinning three silks on every ingot at the same time.

The invention discloses a nanofiber composite filament bundle with high interfacial adhesion strength and its preparation method and application, wherein the preparation method comprises the following steps: (1) preparing a polymer, an additive and a solvent into a spinning solution; the polymer It is at least one of cellulose diacetate, cellulose triacetate, hydroxyethyl cellulose, polyvinyl alcohol, chitosan; the additive is ethylene glycol, glycerol, pentaerythritol, glyceryl diacetate, three At least one of glyceryl acetate, glycerol trioleate, glyceryl palmitate, glyceryl stearate; (2) taking tobacco tow as the base material, the spinning solution obtained in step (1) is processed Electrospinning to obtain the composite tow of nanofibers with high interfacial adhesion strength. The nanofiber composite tow with high interfacial adhesion strength disclosed by the invention can effectively reduce the release of phenol and NNK in cigarette mainstream smoke, the release of phenol is reduced by 16-30%, and the release of NNK is reduced by 12-36%.