Modified polyamide fiber non-woven fabric and preparation method thereof
A technology of polyamide fibers and non-woven fabrics, applied in the directions of single-component polyamide rayon, melt spinning, fiber processing, etc., can solve the problem that the dispersion performance of graphene oxide has not been greatly improved, and the It can improve the dispersion performance of graphene oxide, and it does not greatly improve the functionality of modified fibers.
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[0027] see figure 1Shown, a kind of preparation method of modified polyamide fiber nonwoven fabric comprises the steps:
[0028] S1. Preprocessing:
[0029] S11. After dispersing the graphene oxide nanoparticles in the solvent N,N-dimethylacetamide, heating and stirring at 60-70°C to make them uniform, add a predetermined mass ratio of ionic liquid 1-vinyl-3-butylimidazole Chloride, ultrasonically dispersed for 15-20 minutes to obtain a modified graphene dispersion, and then dried and dried to obtain modified graphene oxide nanoparticles;
[0030] S12. After the polyamide polymer and the ionic liquid 1-vinyl-3-butylimidazolium chloride salt are dried to remove moisture, they are blended into an internal mixer according to a predetermined mass fraction ratio, and melted at 220°C Blending for 5 minutes to obtain polyamide / 1-vinyl-3-butylimidazolium chloride salt blend;
[0031] S2. Blending: uniformly blending the modified graphene oxide nanoparticles prepared in step S11 and...
Embodiment 1
[0041] The preparation method of modified polyamide fiber non-woven fabric:
[0042] S1. Preprocessing:
[0043] S11. After dispersing the graphene oxide nanoparticles in the solvent N,N-dimethylacetamide, heating and stirring at 60°C, adding 1-vinyl-3-butylimidazolium chloride salt, and ultrasonically dispersing for 20 minutes, the obtained The modified graphene dispersion is dried and dried in a vacuum oven at 80°C to obtain modified graphene oxide; in the modified graphene dispersion, the graphene oxide and the ionic liquid 1-vinyl- The mass fraction ratio of 3-butylimidazolium chloride salt is 0.3%: 3%.
[0044] S12. Put the polyamide polymer and the ionic liquid 1-vinyl-3-butylimidazolium chloride at 120° C. and 80° C. respectively, and dry them overnight in a vacuum oven to completely remove moisture. The two are then blended, added to an internal mixer, and melt-blended at 220° C. for 5 minutes to obtain a polyamide / 1-vinyl-3-butylimidazolium chloride blend; in the bl...
Embodiment 2-5
[0066] The difference from Example 1 is that in step S11, the mass fraction ratios of graphene oxide and ionic liquid are different. Other steps are the same as those in Embodiment 1, and will not be repeated here.
[0067] Table 2 is the mass fraction ratio of graphene oxide and ionic liquid and the performance parameter of nonwoven fabric in embodiment 1-5
[0068] Example Graphene Oxide: Ionic Liquids Surface resistance (Ω / sq) Contact angle (°) Example 1 0.3％：3％ 8.9×10 9
53.8 Example 2 0.1％：3％ 3.4×10 9
50.1 Example 3 0.5％：3％ 2.7×10 10
58.1 Example 4 0.3％：2％ 1.5×10 10
56.9 Example 5 0.3％：4％ 6.9×10 9
52.3
[0069] It can be seen from Table 2 that with the increase of graphene oxide content, the antistatic performance and hydrophilic performance of non-woven fabrics decrease. This is mainly due to two modifications of graphene oxide by ionic liquids:
[0070] 1) Chemical modification: ionic liquid 1-v...
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