Preparation method for cationic aqueous polyurethane/polypyrrole conductive composite
A technology of conductive composite materials and water-based polyurethane, which is applied in the field of preparation of cationic water-based polyurethane/polypyrrole conductive composite materials, can solve the problems of not being suitable for large-scale production, limited electrode area of conductive material yield, etc., and achieve easy product quality Control, excellent water dispersibility, and stable production process
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Embodiment 1
[0026] 1) First, add 12 parts of polymer polyol to the drying reactor in parts by mass, degas it in vacuum at 110°C for 1~2 hours, and then pass nitrogen to cool down to 60°C;
[0027] 2) Next, add 5 parts of organic solvent and 5 parts of isocyanate monomer into the reactor under stirring, keep the reaction at 60°C for 1 hour, add 2 parts of cationic hydrophilic chain extender, and adjust the temperature of the system to 50°C, and keep the reaction at 50°C for 4 hours, then cool the system temperature to 20°C;
[0028] 3) Then, add 2 parts of acid salt-forming agent and 40 parts of water into the reactor, stir and disperse for 0.5 hours, adjust the temperature of the system to 0°C, add 5 parts of oxidant aqueous solution into the system, and use acid solution to dissolve The pH value of the system was adjusted to 1;
[0029] 4) Finally, add 1 part of pyrrole that has been subjected to vacuum distillation, and continue the heat preservation reaction for 3 hours to obtain a ca...
Embodiment 2
[0038] 1) First, add 25 parts of polymer polyol to the dry reactor in parts by mass, degas it in vacuum at 115°C for 1~2 hours, and then pass in nitrogen to cool down to 60°C;
[0039] 2) Next, add 10 parts of organic solvent and 8 parts of isocyanate monomer into the reactor under stirring, keep the reaction at 60°C for 2 hours, add 3 parts of cationic hydrophilic chain extender, and adjust the temperature of the system to 70°C, and keep the reaction at 70°C for 2 hours, then cool the system temperature to 30°C;
[0040] 3) Then, add 5 parts of acid salt-forming agent and 140 parts of water into the reactor, stir and disperse for 0.5 hours, adjust the temperature of the system to 60°C, add 10 parts of aqueous solution of oxidant to the system, and use acid solution to dissolve The pH value of the system was adjusted to 3;
[0041] 4) Finally, add 3 parts of pyrrole that has been subjected to vacuum distillation, and continue the heat preservation reaction for 1 hour to obtai...
Embodiment 3
[0050] 1) First, add 30 parts of polymer polyol to the drying reactor in parts by mass, degas it in vacuum at 112°C for 1~2 hours, and then pass nitrogen to cool down to 60°C;
[0051] 2) Next, add 20 parts of organic solvents and 20 parts of isocyanate monomers into the reactor under stirring, keep the reaction at 60°C for 3 hours, add 5 parts of cationic hydrophilic chain extender, and adjust the temperature of the system to 65°C, and keep the reaction at 65°C for 3 hours, then cool the system temperature to 40°C;
[0052] 3) Then, add 8 parts of acid salt-forming agent and 360 parts of water into the reactor, stir and disperse for 0.5 hours, adjust the temperature of the system to 10°C, add 15 parts of aqueous solution of oxidant to the system, and use acid solution to dissolve The pH value of the system was adjusted to 1.5;
[0053] 4) Finally, add 4 parts of pyrrole that has been subjected to vacuum distillation, and continue the heat preservation reaction for 1 hour to ...
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