CNTs composite material and preparation method and application thereof
A composite material and modification technology, which is applied in the field of CNTs composite materials and its preparation, can solve the problem of poor compatibility between CNTs and polystyrene interfaces, limited improvement of thermal conductivity of composite materials, and inability to effectively improve thermal conductivity of composite materials and other issues, to achieve the effect of improving interface compatibility, high thermal conductivity, and increasing thermal conductivity
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[0041] The preparation method of above-mentioned CNTs composite material, see figure 1 and figure 2 , including the following steps:
[0042] ①. Taking an appropriate amount of MWCNTs (a) for acidification to obtain acidified CNTs (b);
[0043] ②. Put poly-3-hexylthiophene into the solvent and stir until completely dissolved to obtain poly-3-hexylthiophene solution;
[0044] ③. Weigh the CNTs acidified product according to the set mass ratio and put it into the poly-3-hexylthiophene solution, and harvest the precipitate after stirring and centrifuging successively, and dry the precipitate to obtain modified CNTs (c);
[0045] ④. Weigh polystyrene into a container, add the solvent dropwise and stir in a water bath environment until completely dissolved to obtain a polystyrene solution;
[0046] ⑤, put the modified CNTs (c) into the polystyrene solution and mix evenly to prepare the mixture;
[0047] ⑥. Coating the mixed material on a glass plate, wait until the mixed mater...
Embodiment 1
[0056] 1.1. Weigh 1.5g WMCNTs into a 250mL flask, and add 75mL concentrated H 2 SO 4 After magnetic stirring for 1 h, sonicate for 30 min in an ice bath, and then add 75 mL of concentrated HNO 3 After magnetic stirring for 0.5h, put it in an oil bath at 80°C for reflux and stir for 1h, then put it into a centrifuge tube, centrifuge at 8000rpm for 8min, harvest the precipitate and wash it with distilled water until neutral, put it in an oven at 60°C to dry the precipitate , to obtain CNTs acid compound;
[0057] 1.2. Put 100mg of poly-3-hexylthiophene into 50mL of chloroform and stir until completely dissolved to obtain poly-3-hexylthiophene solution;
[0058] 1.3. Weigh 200mg of the CNTs acidified product prepared in step 1.1, put it into the poly-3-hexylthiophene solution prepared in step 1.2, stir at room temperature for 2 days, put the suspension into a centrifuge tube, and centrifuge 3 times at 8000rpm, each time for 10min , discard the supernatant, harvest the bottom s...
Embodiment 2
[0063] 2.1. Weigh 1.5g WMCNTs into a 250mL flask, and add 75mL concentrated H 2 SO 4 After magnetic stirring for 0.8h, in an ice bath, sonicate for 40min, then add 75mL concentrated HNO 3 After magnetic stirring for 0.6h, put it in an oil bath at 80°C for reflux and stir for 0.8h, then put it into a centrifuge tube, centrifuge at 8000rpm for 7min, harvest the precipitate and wash it with distilled water until neutral, put it in an oven at 60°C to dry the precipitate The product, that is, the acidified product of CNTs;
[0064] 2.2. Put 120 mg of poly-3-hexylthiophene into 50 mL of chloroform and stir until completely dissolved to obtain poly-3-hexylthiophene solution;
[0065] 2.3. Weigh 200mg of the CNTs acidified product prepared in step 2.1, put it into the poly-3-hexylthiophene solution prepared in step 2.2, stir at room temperature for 3 days, put the suspension into a centrifuge tube, and centrifuge 3 times at 8000rpm, centrifuging each time After 8 minutes, discard t...
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