Preparation method and application of high mechanical strength aramid fiber nanofiber/porous graphene/polyaniline composition, hydrogel and film
A technology of porous graphene and polyaniline films, applied in the fields of adsorption and optics, can solve problems such as low mechanical strength and loss of composite mechanical strength, and achieve excellent mechanical properties, high hydrophobicity, and the effect of being suitable for industrial production.
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Embodiment 1
[0048] Embodiment 1 Preparation method of high mechanical strength ANF / rHGO / PANI hydrogel, aerogel and related films
[0049] A high-mechanical-strength aramid nanofiber / porous graphene / polyaniline hydrogel, the active ingredients of which are aramid nanofiber, porous graphene oxide and polyaniline in a weight ratio of 1:0.1:0.5.
[0050] Its preparation method is the following steps carried out in sequence:
[0051] S1. Raw material preparation
[0052] Preparation of aramid nanofiber (ANF): Add 2.0kg aramid fiber and 3.0kg KOH to 100L DMSO, then add 4L deionized water and stir for 10h to obtain ANF;
[0053] Preparation of porous graphene oxide (HGO): 0.4L H 2 o 2 Add to 36g the graphene oxide dispersion liquid (1.0g L -1 ), and then hydrothermally treated at 100 °C for 10 h. The obtained dispersion was filtered and washed with deionized water and DMSO in turn, and then dispersed in DMSO to obtain HGO;
[0054] Preparation of polyaniline (PANI): Add 1.0L of aniline to ...
Embodiment 2～6
[0062] Embodiment 2-6 Preparation method of high mechanical strength ANF / rHGO / PANI hydrogel and related film
[0063] Embodiments 2 to 6 are respectively a preparation method of high mechanical strength aramid nanofiber / porous graphene / polyaniline hydrogel and related films, which are basically the same as in embodiment 1, except that the weight ratio of raw materials is different and The adjustment of process parameters, the specific parameters are shown in Table 1, the corresponding high mechanical strength aramid fiber nanofiber / porous graphene / polyaniline hydrogel, which is marked as J2~J6 in turn; the corresponding ANF / rHGO / PANI film , marked as B2~B6 in turn.
[0064] Table 1 embodiment 2~6 technological parameters
[0065]
[0066] The content of the other parts of Embodiments 2-6 is the same as that of Embodiment 1.
[0067] Among them, ANF / rHGO / PANI thin films B1-6, ANF / rHGO / PANI-HCl and ANF / rHGO / PANI-KOH thin films are collectively referred to as ANF / rHGO / PANI r...
Embodiment 7
[0068] Example 7 Performance detection of high mechanical strength ANF / rHGO / PNAI hydrogel, aerogel and related films
[0069] The structure, morphology, hydrophobic oil absorption or optical properties of ANF / rHGO / PANI hydrogel J1, airgel QJ1 and related films, ANF / HGO / PANI hydrogel prepared in Example 1 were characterized.
[0070] 1) Structure and morphology
[0071] The structure and morphology of the sample were characterized with a scanning electron microscope (SEM, Hitachi S-4800, Japan) and a transmission electron microscope (TEM, FEI TitanG2 60-300); X-ray photoelectron spectroscopy ( XPS).
[0072] SEM and TEM results such as figure 1 shown by figure 1 a It can be seen that the airgel QJ1 presents a 3D porous cross-linked sheet network structure; from figure 1 b It can be seen that nanofibers and nanoparticles cover the surface of the sheet; the nanofibers at the edge of the sheet are tightly adsorbed by the nanoparticles; this result indicates that there is a str...
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