Graphene and multi-walled carbon nanotubes synergistically reinforced polymer fiber and its preparation method
A technology of multi-walled carbon nanotubes and graphene, applied in the direction of melt spinning, one-component polyester rayon, one-component polyamide rayon, etc., can solve the limitations, low strength and modulus of PA6, Problems such as the lack of obvious improvement in the strength of composite fibers
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Embodiment 1
[0057] The preparation method of polyamide 6 (PA6) / graphene / multi-wall carbon nanotube fiber, comprises the steps:
[0058] 1) Utilize above-mentioned Hummers method to prepare graphite oxide;
[0059] 2) Weigh 0.2g of the graphite oxide prepared in step 1), ultrasonically disperse it in 50mL of toluene, then add 2g of maleic anhydride, react for 5h under a nitrogen atmosphere, 40°C, and stir, and then add 0.16g of azobis Isobutyronitrile, 2g of styrene and 2g of maleic anhydride were copolymerized at 80°C for 2h to obtain a black solid, which was ultrasonically washed 3 times with acetone, centrifuged and then vacuum-dried at 80°C for 24h to obtain styrene -Maleic anhydride copolymer grafted functionalized graphene (such as Figure 1a shown);
[0060] 3) Ultrasonic disperse 0.3g of hydroxylated carbon nanotubes in 70mL of toluene, add 3g of maleic anhydride, react for 5h under nitrogen atmosphere, 40°C, and stir, then add 0.24g of azobisisobutyronitrile, 3g of styrene and 3...
Embodiment 2
[0068] 1) Utilize above-mentioned Hummers method to prepare graphite oxide;
[0069] 2) Weigh 0.2g of the graphite oxide prepared in step 1), ultrasonically disperse it in 50mL of toluene, then add 2g of maleic anhydride, react for 5h under a nitrogen atmosphere, 40°C, and stir, and then add 0.16g of azobis Isobutyronitrile, 2g styrene, 2g maleic anhydride, copolymerized at 80°C for 2h to obtain a black solid, the black solid was ultrasonically washed 3 times with acetone, centrifuged and then vacuum dried at 80°C for 24h to obtain styrene - functionalized graphene grafted with maleic anhydride copolymer;
[0070] 3) Ultrasonic disperse 0.3g of hydroxylated carbon nanotubes in 70mL of toluene, add 3g of maleic anhydride, react for 5h under nitrogen atmosphere, 40°C, and stir, add 0.24g of azobisisobutyronitrile and 3g of styrene respectively , copolymerization reaction at 80°C for 2h to obtain a black solid, which was ultrasonically washed 3 times with acetone, centrifuged an...
Embodiment 3
[0076] 1) Utilize above-mentioned Hummers method to prepare graphite oxide;
[0077] 2) Weigh 0.2g of the graphite oxide prepared in step 1), ultrasonically disperse it in 50mL of toluene, then add 2g of maleic anhydride, react for 5h under a nitrogen atmosphere, 40°C, and stir, and then add 0.16g of azobis Isobutyronitrile, 2g styrene, 2g maleic anhydride, copolymerized at 80°C for 2h to obtain a black solid, the black solid was ultrasonically washed 3 times with acetone, centrifuged and then vacuum dried at 80°C for 24h to obtain styrene - functionalized graphene grafted with maleic anhydride copolymer;
[0078] 3) Ultrasonic disperse 0.3g of hydroxylated carbon nanotubes in 70mL of toluene, add 3g of maleic anhydride, react for 5h under nitrogen atmosphere, 40°C, and stir, add 0.24g of azobisisobutyronitrile and 3g of styrene respectively , copolymerization reaction at 80°C for 2h to obtain a black solid, which was ultrasonically washed 3 times with acetone, centrifuged an...
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