Method for preparing silicon oxide/silver nano composite fibers
A technology of composite fiber and silver nanometer, which is applied in fiber processing, filament/thread forming, artificial filament cleaning/drying, etc. It can solve the problems that are not suitable for large-scale production and use, and achieve the effect of uniform fiber diameter
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Embodiment 1
[0021] Example 1, respectively weigh 1.5g, 6g, 6g, 1.5g of tetraethyl orthosilicate, absolute ethanol, deionized water and hydrochloric acid, stir in a three-necked flask at room temperature for 20min; weigh 5g of polyvinylpyrrolidone and dissolve in The above mixture was stirred at room temperature for 1.5 h; 0.2280 g of silver nitrate was added to the above mixture and stirred for 20 min; the solution obtained after stirring was sucked into a syringe with a needle tip inner diameter of 1 mm, and electrospinning was carried out at a DC high voltage of 28 kV. The distance between the needle tube as the cathode and the aluminum plate as the anode grounding plate is 10 cm, and the feeding speed of the electrospinning solution is 1.5 ml / h; the obtained fiber sample is dried at 60 ° C for 1 ° C min -1 The temperature was raised to 300°C at a certain rate, and kept for 1.5 hours, and the obtained samples were collected for various test characterizations.
[0022] from figure 1 It ...
Embodiment 2
[0023] Example 2, respectively weigh 2g, 8g, 8g, 2g of tetraethyl orthosilicate, absolute ethanol, deionized water and hydrochloric acid, stir in a three-necked flask at room temperature for 30min; weigh 6g of polyvinylpyrrolidone and dissolve in the above mixture Stir at room temperature for 2 hours; add 0.2293 g of silver nitrate to the above mixture and stir for 30 minutes; draw the stirred solution into a syringe with a needle tip inner diameter of 1 mm, and perform electrospinning at a DC high voltage of 30 kV. The distance between the needle tube as the cathode and the aluminum plate as the anode grounding plate is 12 cm, and the feeding speed of the electrospinning solution is 2 ml / h; the obtained fiber sample is dried at 60 °C and then heated at 2 °C min -1 The temperature was raised to 400°C at a certain rate, and kept for 2 hours, and the obtained samples were collected for various test characterizations.
[0024] from figure 2 It can be seen that a large number of...
Embodiment 3
[0025] Example 3, respectively weigh 2.5g, 10g, 10g, 2.5g of tetraethyl orthosilicate, absolute ethanol, deionized water and hydrochloric acid, stir in a three-necked flask at room temperature for 40min; weigh 8g of polyvinylpyrrolidone and dissolve in The above mixture was stirred at room temperature for 2.5 hours; 0.2300 g of silver nitrate was added to the above mixture and stirred for 40 minutes; the solution obtained after stirring was sucked into a syringe with a needle tip inner diameter of 1 mm, and electrospinning was carried out at a DC high voltage of 32 kV. The distance between the needle tube as the cathode and the aluminum plate of the collecting plate as the anode grounding is 14cm, and the feeding speed of the electrospinning solution is 2.5ml / h; the obtained fiber sample is dried at 60°C and then heated at 3°C min -1 The temperature was raised to 600°C at a certain rate, and kept for 2.5 hours, and the obtained samples were collected for various test characte...
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