Suzhou Zhanheng intelligent introduction: the principle and experimental steps of our intelligent spinning machine 

 The principle and experimental steps of Suzhou intelligent spinning machine The main spinning methods of nanofibers include electrospinning, composite spinning, molecular spinneret, biosynthesis, chemical synthesis, spider silk, carbon nanotube, bacterial cellulose and so on. Electrospinning is one of the most important basic methods for preparing nanofibers. 

 Suzhou intelligent spinning machine adopts friction transmission mode, automatically switches the silk cake through the automatic switching mechanism, and the lifting cylinder supports the friction roller device and the groove roller device to do vertical lifting movement. 

All electrical devices are centrally controlled by programmable controller, which ensures stable tension, good molding and high production efficiency during the cake forming, and is the key equipment in the spandex spinning production process. Between the primary wire guide machine and a drawing machine, the tow passes through an oil dip tank under low tension, and the oil in the tank is heated to 40-50 ° C, so that the tow uniformly obtains the oil needed for continuous drafting, to ensure the smoothness of the tow, and to keep the tow temperature constant. 

The three filaments then enter a draft machine whose draft rolls guide and hold the tow in place during the drawing process. After leaving a draft machine, the tow enters the water margin tank, and immediately enters the wet draft state behind, and is shaped under tension and high temperature to obtain the complete orientation of the macromolecular structure. This process can make the fiber obtain the characteristics of low elongation, low shrinkage and high modulus. 

 Experimental steps of Suzhou spinning machine: 

 1, the polyvinyl alcohol and deionized water according to a certain proportion of heating and stirring to dissolve, cooling, to make a polyvinyl alcohol solution. 

 2. Take the appropriate amount of prepared polyvinyl alcohol solution and inject it into the syringe to discharge the bubbles; Fixed syringe on micro extrusion pump; The syringe and spinneret are connected with a catheter; Clamp the positive electrode of the high voltage power supply to the spinneret head, and connect the negative electrode to the receiving device. 

 3, open the micro extrusion pump, select the appropriate extrusion rate. After the solution is slowly extruded, turn on the high voltage power supply and select the appropriate voltage value. The sample of polyvinyl alcohol nonwovens was obtained from the collection device by adjusting the receiving distance appropriately. 

 4, adjust the static voltage value, spinning liquid flow, receiving distance and other experimental parameters, observe the spinning liquid electrostatic spinning performance changes. 

 5, after spinning, first turn off the high voltage power supply, and then turn off the micro extrusion pump switch.