High-performance polyaniline base organic thermoelectric material and preparation method thereof
A polyaniline-based, thermoelectric material technology, applied in the direction of thermoelectric device junction lead-out material, thermoelectric device manufacturing/processing, etc., can solve problems such as lack of improvement measures, and achieve improved thermoelectric conversion performance, thermoelectric conversion performance. The effect of conductivity
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[0055] (1) Preparation of polyaniline:
[0056] Preparation of polyaniline by in-situ polymerization of aniline, ammonium persulfate and concentrated hydrochloric acid;
[0057] (2) Preparation of conductive additives:
[0058] S1: Add dispersant to the powder of conductive particles and stir evenly;
[0059] S2: heat up the mixture obtained in step S1, and then slowly add a coupling agent dropwise to react;
[0060] S3: Filter the mixture obtained in step S2, add the first part of wetting agent to the obtained solid powder, then perform the first stage of ball milling, take out the material after the first stage of ball milling, dry, and then proceed to the second stage Ball milling, take out the material again to get the conductive additive;
[0061] (3) Composite
[0062] The polyaniline prepared in step (1), the conductive additive prepared in step (2), and the second part of wetting agent are mixed and ball milled to obtain the high-performance polyaniline organic the...
Embodiment 1
[0071] Weigh 10g of aniline that has been distilled under reduced pressure twice, and add it to 150mL with a concentration of 0.8 mol.L -1 In concentrated hydrochloric acid, stir evenly, and prepare the hydrochloric acid solution A of aniline; add 18g of ammonium persulfate (APS) to 144ml with a concentration of 0.8mol.L -1 In concentrated hydrochloric acid, prepare APS hydrochloric acid solution B; after mixing liquid A and liquid B, place in a water bath at 30°C, mechanically stir for 0.5h of polymerization reaction, then stand still for 24h, and the reaction ends. Suction filter the material and use 0.1mol.L -1 HCl, ethanol, and distilled water were washed until the filtrate was colorless; finally, the filter cake was dried in a vacuum oven at 40°C for 72 hours to obtain powdered polyaniline.
[0072] Add 25g of dimethyl phthalate to 5g of commercially available carbon nanotubes, stir evenly, and then add 5g of coupling agent isopropyl tris(dioctyl pyrophosphate) dropwise...
Embodiment 2
[0075] Weigh 10g of aniline that has been distilled under reduced pressure twice, and add it to 150mL with a concentration of 1.5 mol.L -1 In concentrated hydrochloric acid, stir evenly to prepare aniline hydrochloric acid solution A; add 20g of ammonium persulfate (APS) to 150ml to a concentration of 1.0 mol.L -1 In concentrated hydrochloric acid, prepare APS hydrochloric acid solution B; mix liquid A and liquid B, place in a water bath at 10°C, and mechanically stir for 1 hour of polymerization reaction, then let stand for 24 hours, and the reaction ends. Suction filter the material and use 0.1mol.L -1 HCl, ethanol, and distilled water were washed until the filtrate was colorless; finally, the filter cake was dried in a vacuum oven at 60°C for 48 hours to obtain powdered polyaniline.
[0076] Add 50g of dibutyl phthalate to 5g of commercially available graphite powder, stir evenly, then add 2g of coupling agent aminopropylmethyldiethoxysilane dropwise within 45min at a tem...
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