Hyperbranched polyaniline modified carbon nanotube/thermosetting resin composite material and preparation method thereof
A technology of resin composite materials and polyaniline, which is applied in dyeing organosilicon compound treatment, fibrous fillers, etc., can solve the problems of difficult preparation methods and negative effects on the dielectric properties of composite materials, and achieves overcoming dielectric loss with simple methods Ease of operation and the effect of increasing the dielectric constant
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Embodiment 1
[0037] 1. Preparation of hyperbranched polyaniline
[0038] 0.9g aniline, 1.1g o-toluidine and 1.7g m-aminobenzenesulfonic acid were mixed respectively, and 150mL hydrochloric acid solution (0.2mol / L) was added in the mixture; 2 Under protection and at 0-5°C, mechanically stir for 30 minutes. Subsequently, 100 mL of ammonium persulfate (0.3 mol / L) solution was added dropwise and vigorously stirred. After the dropwise addition, keep warm for 5 hours until the reaction is over, wash with dilute hydrochloric acid solution, acetone, deionized water, filter with suction, and vacuum dry at 50°C for 24 hours to obtain polyaniline with an intrinsic viscosity of 0.43dL / g. Its infrared spectrum, ultraviolet-visible spectrum, 1 H nuclear magnetic resonance spectrum, scanning electron microscope, X-ray diffraction spectrum, conductivity curve and thermogravimetric curve are respectively as attached figure 1 , 2 , 3, 4, 5, 6 and 7.
Embodiment 2
[0060] 1. Preparation of hyperbranched polyaniline
[0061] Prepare hyperbranched polyaniline according to embodiment 1 technical scheme.
[0062] 2. Preparation of hyperbranched polyaniline modified carbon nanotubes
[0063] Add 1 g of carbon nanotubes and 0.033 g of hyperbranched polyaniline into 50 mL of dimethyl sulfoxide, stir at 25 °C and sonicate for 20 min, add 100 mL of methanol to precipitate, filter and wash, and dry in vacuum at 50 °C for 24 Hours, hyperbranched polyaniline-modified carbon nanotubes were obtained. Its X-ray diffraction spectrum and Raman spectrum are as follows Figure 9 , 10 shown.
[0064] 3. Preparation of hyperbranched polyaniline modified carbon nanotubes / epoxy resin composites
[0065] Add 0.517g of hyperbranched polyaniline-modified carbon nanotubes and 100g of epoxy resin (grade E-51) into the flask, stir and sonicate at 60°C for 1 hour, vacuum degassing for 30min, and add 4g of 2-ethane base-4-methylimidazole, continue to stir for 10...
Embodiment 3
[0071] 1. Preparation of hyperbranched polyaniline
[0072] Prepare hyperbranched polyaniline according to embodiment 1 technical scheme.
[0073] 2. Preparation of hyperbranched polyaniline modified carbon nanotubes
[0074] Add 1 g of carbon nanotubes and 0.05 g of hyperbranched polyaniline into 50 mL of dimethyl sulfoxide, stir at 25 °C and sonicate for 20 min, add 100 mL of methanol to precipitate, filter and wash, and dry in vacuum at 50 °C for 24 Hours, hyperbranched polyaniline-modified carbon nanotubes were obtained. Its X-ray diffraction spectrum and Raman spectrum are as follows Figure 9 , 10 shown.
[0075] 3. Preparation of hyperbranched polyaniline modified carbon nanotubes / epoxy resin composites
[0076] Add 0.525g of hyperbranched polyaniline-modified carbon nanotubes and 100g of epoxy resin (grade E-51) into the flask, stir and sonicate at 60°C for 1 hour, vacuum degassing for 30min, and add 4g of 2-ethane Base-4-methylimidazole, continue to stir for 10 ...
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