A kind of SICN ceramic wired passive temperature sensor and preparation method thereof
A temperature sensor, ceramic technology, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve the problems of wired active, difficult to withstand high temperature environment, low working temperature, punching and other problems
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Embodiment 1
[0038] 1. Take 8g of polydimethylsilane and 0.8g of crosslinking agent and mix them evenly with magnetic stirring, then use ultrasonic vibration to remove the bubbles in the mixed solution to obtain a uniform mixed solution with less bubbles. During the heating and curing process, a smooth cylindrical master mold with a diameter of 12.7 mm was put into the mixed liquid, and the master mold was taken out after the mixed liquid solidified, and a PDMS mold with a cavity of the master mold size was obtained.
[0039] 2. Take 4g of polysilazane and 0.24g of I819 photoinitiator and mix, then put the mixed solution on a heatable magnetic stirrer and stir at 800 rad / min for 1 hour at 80°C to obtain a light yellow mixed solution.
[0040] 3. Add the stirred mixed solution into the PDMS mold, and then place it under a 250w ultraviolet lamp for crosslinking for 0.5h, and obtain a ceramic green body after crosslinking and curing.
[0041] 4. Sintering the ceramic green sheet. Sprinkle a ...
Embodiment 2
[0047] 1. Take 15g of polysilazane and pour it into a tin foil carton, then put it into a high-temperature tube furnace for thermal crosslinking. 2 Under the atmosphere, the temperature was raised from room temperature to 140 °C at a heating rate of 0.5 °C / min, kept at 140 °C for 1 hour, and then naturally cooled to room temperature to obtain light yellow solid polysilazane.
[0048] 2. Pour the uniformly mixed viscous light yellow liquid into a tin foil carton, and then put it into a high-temperature tube furnace for thermal crosslinking. 2 Under the atmosphere, the temperature was raised from room temperature to 140 °C at a heating rate of 0.5 °C / min, kept at 140 °C for 1 hour, and then naturally cooled to room temperature to obtain light yellow solid polysilazane.
[0049] 3. Ball mill the obtained light yellow solid polysilazane with a ball mill. The selected ball mill is QM-1SP2 planetary ball mill, the rotational speed during ball milling is 400rad / min, the ball milling...
Embodiment 3
[0057] 1. Take 10g of polysilazane and 0.6g of I819 photoinitiator and mix, then put the mixed solution on a heatable magnetic stirrer and stir at 800 rad / min for 1 hour at 80°C to obtain a light yellow mixed solution.
[0058] 2. Pour the obtained light yellow mixture into a tinfoil carton, and then place it under a 250w ultraviolet lamp for crosslinking for 0.5h. After crosslinking and solidification, a light yellow solid polysilazane is obtained.
[0059] 3. Ball mill the obtained light yellow solid polysilazane with a ball mill. The selected ball mill is QM-1SP2 planetary ball mill, the rotational speed during ball milling is 400rad / min, the ball milling time is 8h, and the rotation is reversed every half hour. Powder was obtained after ball milling.
[0060] 4. Take 1 g of the powder obtained after ball milling and directly put it into a heatable temperature-controlled circular mold with a diameter of 12.7 mm for heating and pressing, and hold the pressure at 20 MPa for ...
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