Device and method for preparing gas sensitive sensor in situ by electro-spinning method
A technology of gas sensor and electrospinning method, which is applied in the field of in-situ preparation of gas sensor devices by electrospinning method, can solve the problems of reducing production efficiency and repeatability, and achieve the effect of improving production efficiency
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Embodiment 1
[0024] Example 1: 10% polyacrylonitrile, 10% stannous chloride, and 80% N,N-dimethylformamide were stirred at room temperature for 6 hours, then transferred to the storage syringe, and the distance between the end of the needle and the collecting plate was adjusted to 12cm, adjust the peristaltic pump output rate to 0.6ml / h. A ceramic tube is connected to the rotating motor through an iron needle and placed in the groove of the collecting plate, and the speed of the rotating motor is adjusted to 15 revolutions per second. Electrically connect the needle and the collecting plate to the high-voltage power supply, turn on the high-voltage power supply, and set the voltage to 10kv. After 10 minutes of electrospinning, the ceramic tube was taken out, annealed in a muffle furnace at 300°C for 2 hours, coated with gold paste on both ends of the ceramic tube, wound with platinum wire, and annealed in a muffle furnace at 300°C for half an hour , to get the gas sensor.
Embodiment 2
[0025] Example 2: 10% of polyacrylonitrile, 9.5% of stannous chloride, 0.5% of copper oxide, and 80% of N,N-dimethylformamide were stirred at room temperature for 6 hours, then transferred to the liquid storage syringe, and the needle was adjusted The distance between the end and the collecting plate is 12cm, and the output speed of the peristaltic pump is adjusted to 0.6ml / h. A ceramic tube is connected to the rotating motor through an iron needle and placed in the groove of the collecting plate, and the speed of the rotating motor is adjusted to 15 revolutions per second. Electrically connect the needle and the collecting plate to the high-voltage power supply, turn on the high-voltage power supply, and set the voltage to 10kv. After 10 minutes of electrospinning, the ceramic tube was taken out, annealed in a muffle furnace at 300°C for 2 hours, coated with gold paste on both ends of the ceramic tube, wound with platinum wire, and annealed in a muffle furnace at 300°C for ha...
Embodiment 3
[0026] Example 3: 10% of polyacrylonitrile, 9% of stannous chloride, 1% of copper oxide, and 80% of N,N-dimethylformamide were stirred at room temperature for 6 hours, then transferred to the liquid storage syringe, and the needle was adjusted The distance between the end and the collecting plate is 12cm, and the output speed of the peristaltic pump is adjusted to 0.6ml / h. A ceramic tube is connected to the rotating motor through an iron needle and placed in the groove of the collecting plate, and the speed of the rotating motor is adjusted to 15 revolutions per second. Electrically connect the needle and the collecting plate to the high-voltage power supply, turn on the high-voltage power supply, and set the voltage to 10kv. After 10 minutes of electrospinning, the ceramic tube was taken out, annealed in a muffle furnace at 300°C for 2 hours, coated with gold paste on both ends of the ceramic tube, wound with platinum wire, and annealed in a muffle furnace at 300°C for half a...
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