A sensitive membrane that can effectively improve the response performance to ethanol gas
A gas-responsive, sensitive membrane technology, applied in the field of sensitive membranes, can solve problems such as the inability to further improve ethanol gas response performance, and achieve the effects of improving response sensitivity, reducing response time, and excellent response performance
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Embodiment 1
[0032] The sensitive film includes the following raw materials: 10g of SnO with an average particle size ≤ 50nm 2 Particles, 0.8g of CrO with average particle size ≤ 50nm 3 Granules, 20mL absolute ethanol, 12mL PDADMAC, 2g polyvinyl alcohol;
[0033] The preparation method of above-mentioned sensitive film comprises the following steps:
[0034] S1. Take 10g of SnO with an average particle size ≤ 50nm 2 Granules, spare;
[0035] S2. Take 0.8g of CrO with an average particle size ≤ 50nm 3 Granules, spare;
[0036] S3. the SnO in step S1 2 Particles, CrO in step S2 3 The particles were placed into a ball mill jar together with 20 mL of absolute ethanol, using zirconium beads with a diameter of 3 mm, and the ball-to-material ratio was 10:1. 2 Under protection, ball milling for 2 hours to prepare mixed components;
[0037] S4. Put the mixed components in step S3 first in a vacuum drying oven, vacuum dry at 78°C for 2 hours, and then place them in a vacuum furnace with a pr...
Embodiment 2
[0043] The sensitive film includes the following raw materials: 10g of SnO with an average particle size ≤ 50nm 2 Particles, 0.6g of CrO with average particle size ≤ 50nm 3 Granules, 20mL absolute ethanol, 12mL PDADMAC, 1.5g polyvinyl alcohol;
[0044] The preparation method of above-mentioned sensitive film comprises the following steps:
[0045] S1. Take 10g of SnO with an average particle size ≤ 50nm 2Granules, spare;
[0046] S2. Take 0.6g of CrO with an average particle size ≤ 50nm 3 Granules, spare;
[0047] S3. the SnO in step S1 2 Particles, CrO in step S2 3 The particles were placed into a ball mill jar together with 20 mL of absolute ethanol, using zirconium beads with a diameter of 3 mm, and the ball-to-material ratio was 5:1. 2 Under protection, ball mill for 1.5h to prepare mixed components;
[0048] S4. Put the mixed components in step S3 first in a vacuum drying oven, and then vacuum-dry them at 78°C for 2 hours, and then place them in a vacuum furnace w...
Embodiment 3
[0054] The sensitive film includes the following raw materials: 10g of SnO with an average particle size ≤ 50nm 2 Particles, 1.5g of CrO with average particle size ≤ 50nm 3 Granules, 20mL absolute ethanol, 12mL PDADMAC, 2.2g polyvinyl alcohol;
[0055] The preparation method of above-mentioned sensitive film comprises the following steps:
[0056] S1. Take 10g of SnO with an average particle size ≤ 50nm 2 Granules, spare;
[0057] S2. Take 1.5g of CrO with an average particle size ≤ 50nm 3 Granules, spare;
[0058] S3. the SnO in step S1 2 Particles, CrO in step S2 3 The particles were placed into a ball mill jar together with 20 mL of absolute ethanol, using zirconium beads with a diameter of 3 mm, and the ball-to-material ratio was 10:1. 2 Under protection, ball milling for 2 hours to prepare mixed components;
[0059] S4. Put the mixed components in step S3 first in a vacuum drying oven, and then vacuum-dry them at 78°C for 2 hours, then place them in a vacuum furna...
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