Polymer film material with hydrogen absorption function and preparation method thereof
A polymer film and polymer technology, applied in the field of functional polymer preparation, can solve the problems of additional mass and volume problems of packaging materials, poor hydrogen absorption performance, complex preparation process, etc., and achieves high practical application value and simple preparation process. , The effect of high hydrogen absorption performance
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Embodiment 1
[0018] Weigh 20g of polydimethylsiloxane (3500cst) containing 5% vinyl in a 250mL plastic beaker, then add 0.2g of hydrogen-containing silicone oil, 8g of anhydrous calcium chloride powder (200 mesh), 2.0g of Pd@C Catalyst, after stirring evenly, add 0.05g of 2.0wt% Cassette catalyst, stir quickly and evenly, pour the mixture into a stainless steel plate, and cure at 60°C for 15h to obtain a white flexible film material.
[0019] The resulting flexible film (0.2g, 220 μm) is placed in a mixed gas (250mL 4.8% hydrogen, 10% oxygen, 85.2% nitrogen gas mixture) and the changes in the hydrogen concentration of the system after different times are shown in Table 1:
[0020] Table 1
[0021] time 15min 30min 100min 240min Hydrogen concentration (%) 3.7 2.5 0.1 0
[0022] The obtained film (0.2g, 220 μm) is placed in the mixed gas (250mL 1% hydrogen, 5% oxygen, 94% nitrogen mixed gas) for different times, and the hydrogen concentration of the system chan...
Embodiment 2
[0026] Weigh 20g of polybutadiene (Mn=25000) into a 250mL plastic beaker, then add 2.5g of hydrogen-containing silicone oil, 8g of anhydrous molecular sieve powder (200 mesh), 2.0g of Pd@C catalyst, stir well and add 0.05g of 2wt % Cassette catalyst, the mixture was quickly stirred evenly and poured into a stainless steel plate, and cured at 80° C. for 15 hours to obtain a white flexible film material.
[0027] The resulting white flexible film (0.2g, 402 μm) is placed in a mixed gas (250mL 4.8% hydrogen, 10% oxygen, 85.2% nitrogen gas mixture) and the changes in the hydrogen concentration of the system after different times are shown in Table 3:
[0028] table 3
[0029] time 15min 30min 100min 240min Hydrogen concentration (%) 4.2 3.0 0.8 0
[0030] The resulting flexible film (0.2g, 402 μm) was placed in a mixed gas (250mL 1% hydrogen, 5% oxygen, 94% nitrogen gas mixture) and the changes in the hydrogen concentration of the system after differ...
Embodiment 3
[0034] Weigh 20g polybutadiene-polystyrene-polybutadiene triblock copolymer (styrene content 25wt%), add 30mL tetrahydrofuran to dissolve, add 8g anhydrous molecular sieve powder (200 mesh) after polymer dissolves completely and 3.0g of Pd@C catalyst, after stirring evenly, the mixture was poured into a stainless steel plate, and cured at 80°C for 15h to obtain a white flexible material. After evaporating the solvent at room temperature, continue drying at 80°C to obtain a flexible white film material.
[0035] The resulting white flexible film (0.2g, 580 μm) was placed in a mixed gas (250mL 4.8% hydrogen, 10% oxygen, 85.2% nitrogen mixed gas) for different times, and the changes in the hydrogen concentration of the system were shown in Table 5:
[0036] table 5
[0037] time 15min 30min 100min 240min Hydrogen concentration (%) 6.9 4.8 2.1 0.7
[0038] The resulting flexible film (0.2g, 580 μm) was placed in a mixed gas (250mL 1% hydrogen, 5% ox...
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