A kind of nr-cnf-cnt conductive nanocomposite material and its preparation method and application
A technology of NR-CNF-CNT and CNF-CNT, which is applied in the field of NR-CNF-CNT conductive nano-composite materials and its preparation, to achieve the effect of reducing the amount of addition and improving the conductivity
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Embodiment 1
[0075] Step 1, the preparation of CNF suspension, its concrete method step comprises:
[0076] (1) Get 400g of sulfuric acid with a mass fraction of 48% and heat and stir to keep the temperature at 45±1°C. Then take 20g of pulverized absorbent cotton, slowly add in sulfuric acid, and continue to stir for 50 minutes; (2) add deionized water to terminate the acid hydrolysis reaction, and then transfer the resulting suspension to a dialysis bag after repeated rinsing with distilled water for dialysis for 5 days until the pH value is 7; (3) Take the above suspension, ultrasonically pulverize it under 1000w power for 150 minutes, obtain the CNF suspension, measure the concentration and refrigerate for later use;
[0077] Step 2, the preparation of CNF-CNT nano-hybrids, its specific method steps include:
[0078] (1) Weigh an appropriate amount of previously prepared CNF suspension (CNFs account for 3% of the mass of NR), dilute to 400ml, and ultrasonicate for 10min (power 800w) to...
Embodiment 2
[0083] Step 1, the preparation of CNF suspension, its concrete method step comprises:
[0084] (1) Get 400g of sulfuric acid with a mass fraction of 48% and heat and stir to keep the temperature at 45±1°C. Then take 20g of pulverized absorbent cotton, slowly add in sulfuric acid, and continue to stir for 50 minutes; (2) add deionized water to terminate the acid hydrolysis reaction, and then transfer the resulting suspension to a dialysis bag after repeated rinsing with distilled water for dialysis for 5 days until the pH value is 7; (3) Take the above suspension, ultrasonically pulverize it under 1000w power for 150 minutes, obtain the CNF suspension, measure the concentration and refrigerate for later use;
[0085] Step 2, the preparation of CNF-CNT nano-hybrids, its specific method steps include:
[0086] (1) Weigh an appropriate amount of previously prepared CNF suspension (CNFs account for 3% of the mass of NR), dilute to 400ml, and ultrasonicate for 10min (power 800w) to...
Embodiment 3
[0091] Step 1, the preparation of CNF suspension, its concrete method step comprises:
[0092] (1) Get 400g of sulfuric acid with a mass fraction of 48% and heat and stir to keep the temperature at 45±1°C. Then take 20g of pulverized absorbent cotton, slowly add in sulfuric acid, and continue to stir for 50 minutes; (2) add deionized water to terminate the acid hydrolysis reaction, and then transfer the resulting suspension to a dialysis bag after repeated rinsing with distilled water for dialysis for 5 days until the pH value is 7; (3) Take the above suspension and ultrasonically pulverize it under 1000w power for 150 minutes to obtain the CNF suspension, measure the concentration and refrigerate for later use;
[0093] Step 2, the preparation of CNF-CNT nano-hybrids, its specific method steps include:
[0094](1) Weigh an appropriate amount of previously prepared CNF suspension (CNFs account for 5% of the mass of NR), dilute to 400ml, and ultrasonicate for 10min (power 800w...
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Abstract
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