A kind of preparation method of carbon nanotube/paraffin microcapsule with light-absorbing performance
A paraffin microcapsule, carbon nanotube technology, applied in microcapsule preparations, microsphere preparation, chemical instruments and methods, etc., can solve the problems of heat storage and temperature control performance and application space limitations, and improve heat storage and release. Efficiency, improve emulsion stability, increase the effect of thermal conductivity
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Embodiment 1
[0038] Preparation of compound paraffin wax:
[0039] Weigh 16.2g of 46# solid paraffin and 37.8g of liquid paraffin in a 100mL beaker, stir in a water bath at 70°C for 30min, then weigh 6g of microcrystalline wax into the beaker and continue to stir for 30min to obtain 60g of compound wax sample.
[0040] Hyperbranched multi-walled carbon nanotubes (M WCNTs-HBP):
[0041] Accurately weigh, 26.2856 g of glycolamine and 25 mL of methanol in a 250 mL three-necked flask equipped with a thermometer and a magnetic stirring device, and stir at room temperature. After the glycol amine is completely dissolved, slowly add 21.5230g methyl acrylate dropwise, heat to 40℃, stir with constant temperature magnetic force for 4h, then distill under reduced pressure to remove the methanol to obtain a colorless transparent solution DEAM(N,N-dihydroxyethyl) Methyl-3-amine acrylate). Then, 0.25 g of p-toluenesulfonic acid and 0.25 g of pentaerythritol were added to the system, the temperature was rais...
Embodiment 2
[0054] The mass ratio of the compound paraffin wax, TAPP, M WCNTs, OP-10 emulsifier, and distilled water is 6:0.01:0.003:0.2:40.
[0055] The mass ratio of the hyperbranched multi-walled carbon nanotubes (M WCNTs-HBP), distilled water, urea, melamine, and 37% formaldehyde solution in mass fraction is 0.01:50:1:2:10. The other steps are the same as in Example 1.
Embodiment 3
[0057] The mass ratio of the compound paraffin wax, TAPP, M WCNTs, OP-10 emulsifier, and distilled water is 8:0.02:0.008:0.5:40.
[0058] The mass ratio of the hyperbranched multi-walled carbon nanotubes (M WCNTs-HBP), distilled water, urea, melamine, and 37% formaldehyde solution by mass is 0.02:50:3:5:15. The other steps are the same as in Example 1.
[0059] The microcapsules shown in Table 1 were prepared under the same experimental conditions and methods.
[0060] Results and discussion
[0061] Structural characterization of carbon nanotubes and porphyrins: figure 1 It is the infrared detection spectrum of polyhydroxy polyurethane. 3380cm -1 The stretch vibration absorption peak of O-H bond at 2950cm -1 There is the stretching vibration absorption peak of -CH3 and -CH2, 1730cm -1 Is the stretching vibration absorption peak of the C=O bond in the ester group, 1620cm -1 It is the absorption peak of -OH bending vibration, 1440~1200cm -1 The C-H bond bending vibration and the C-O,...
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