Cement-based conductive composite material, preparation method and application
A conductive composite material, cement-based technology, applied in the field of materials, can solve the problems of reducing mechanical properties, failing to improve the electrical conductivity of composite materials, etc. Effect
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[0031] The preparation method of the carbon nanotube-loaded polypyrrole conductive filler comprises: taking the purified pyrrole monomer in a round bottom flask, adding carbon nanotubes and sodium lignosulfonate aqueous solution respectively, and adding FeCl dropwise under the condition of stirring in an ice-water bath. 3 The aqueous solution is reacted for 8-12 hours under the condition of stirring at room temperature, and the carbon nanotube-loaded polypyrrole conductive filler is prepared through suction filtration, drying and grinding.
[0032] It can be understood that, in the above steps of the embodiments of the present invention, the round bottom flask is a flask of any volume that can accommodate the above reaction, and the preferred capacity of the flask is 250ml. If flasks of other specifications are needed, those skilled in the art can adjust according to the volume determined above.
[0033] In one embodiment of the present invention, take 0.5-2.0 ml of purified p...
Embodiment 1
[0048] Measure 0.5 mL of the purified pyrrole monomer into a 250 mL round bottom flask, add 0.5 g of carbon nanotubes and 5 mL of 1 mol / L sodium lignosulfonate aqueous solution, and add 1 mol / L sodium lignosulfonate solution dropwise under stirring conditions in an ice-water bath. L of FeCl3 aqueous solution 5mL, reacted for 8 hours at room temperature under stirring conditions, and made carbon nanotube-loaded polypyrrole conductive filler through suction filtration, drying, and grinding;
[0049] Weigh a certain amount of carbon nanotube-loaded polypyrrole conductive filler, dissolve it in 10mL distilled water, add it to the clean paddle mixer of 1300g Portland 425 cement, stir at a slow speed for 120 seconds, pause for 15 seconds and turn to medium and high speed stirring at 120 second;
[0050] The cement-based composite material that has been stirred is poured into a mold, and the cement-based conductive composite material containing carbon nanotube-loaded polypyrrole cond...
Embodiment 2
[0052] Measure 0.8mL of purified pyrrole monomer into a 250mL round bottom flask, add 0.5g of carbon nanotubes and 5mL of sodium lignosulfonate aqueous solution with a concentration of 1.5mol / L, and add 1.5 mol / L FeCl3 aqueous solution 5mL, reacted at room temperature for 10 hours under stirring conditions, filtered, dried, and ground to make carbon nanotube-loaded polypyrrole conductive filler;
[0053] Weigh a certain amount of carbon nanotube-loaded polypyrrole conductive filler, dissolve it in 10mL distilled water, add it to the clean paddle mixer of 1300g Portland 425 cement, stir at a slow speed for 120 seconds, pause for 15 seconds and turn to medium and high speed stirring at 120 second;
[0054] The cement-based composite material that has been stirred is poured into a mold, and the cement-based conductive composite material containing carbon nanotube-loaded polypyrrole conductive filler is produced through vibration and steam curing processes.
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