Porous material syringe needle-free static spinning apparatus
A porous material, electrospinning technology, used in textiles and papermaking, filament/thread forming, fiber processing, etc., can solve the problems of difficult control of spinning diameter, spinning sticking, etc. The effect of uniformity of filaments, reducing production costs and expenses
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Embodiment 1
[0025] Mix and stir polyacrylonitrile (PAN), N,N dimethylformamide (NMP) and ethanol to form an 8wt% PAN solution; then add acetylacetone, stir evenly, add a certain amount of nano-silica powder and continue stirring until form a suspension, such as Figure 7 As shown, a porous copper foil with a pore size of 75 μm and a porosity of 45% is used as the porous medium 2, and it is matched with a 20ml spinning buffer tube 1, and the opening of the bottom end of the spinning buffer tube 1 is 8 mm, such as figure 2 As shown, wrap the porous medium 2 on the liquid outlet hole 9 at the bottom of the spinning buffer tube 1, install the spinning buffer tube 1 on the fixed copper core fixture 3, and wrap the porous medium on the spinning buffer tube 1 2. Closely contact with the inner surface of the 3 holes of the fixed copper core fixture to play the role of conducting voltage, and set the distance between spinning heads to 15cm. Such as figure 1 As shown, the solution is injected in...
Embodiment 2
[0027] Configure 50wt% PVDF acetone solvent, add 2wt% water and mix to form spinning slurry. The size of the liquid outlet at the bottom is selected as a 20mm buffer cylinder, and the volume of the buffer cylinder is 200ml; powder metallurgy porous nickel is selected as the porous medium 2, with a porosity of 60%, a pore diameter of 100μm, and a thickness of 6mm. Such as image 3 As shown in the figure, when assembling, the copper conical electrode 1-1 is first inserted into the bottom of the spinning buffer tube 1, and the top end passes through the wall of the spinning buffer tube 1. Such as Figure 4As shown, the shape of the conical electrode 1-1 is the same as the shape of the bottom end of the spinning buffer tube 1, and plays the role of connecting the spinning solution in the spinning buffer tube 1 with the outer fixture. Afterwards, the porous medium 2 is cut into the same shape as the bottom of the spinning buffer cylinder 1, and placed into the liquid outlet hole ...
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