Graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber and preparation method thereof

A technology of multi-walled carbon nanotubes and graphene, which is applied in the fields of fiber chemical characteristics, melt spinning, rayon manufacturing, etc., can solve the problems of limitation, low strength and modulus of PA6, and insignificant improvement of composite fiber strength, etc.

Active Publication Date: 2015-02-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The PA6 prepared by the prior art has low strength and modulus, and the strength of the modified composite fiber does not increase significantly, which greatly limits its practical application

Method used

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  • Graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber and preparation method thereof
  • Graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber and preparation method thereof
  • Graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

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 at 40°C, 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, stirring conditions, then add 0.24g of azobisisobutyronitrile, 3g of styrene an...

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 at 40°C, 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 and then v...

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 at 40°C, 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 and then v...

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Abstract

The invention discloses a preparation method for a graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber. The preparation method comprises the following steps: conducting functional processing on oxidized graphene and a hydroxylated multiwalled carbon nanotube to be mixed with a monomer capable of being subjected to condensation polymerization, conducting condensation polymerization to obtain a composite master batch, processing the composite master batch, fusing and squeezing out the processed composite master batch to obtain a nascent fiber, and conducting postprocessing on the nascent fiber so as to obtain the graphene and multiwalled carbon nanotube synergetic enhanced polymer fiber. According to the preparation method, the dispersion degree of carbon material in fiber forming polymer can be obviously improved, and then the mechanical strength of the prepared fiber can be improved.

Description

technical field [0001] The invention relates to the field of high-performance fiber preparation, in particular to a graphene and multi-wall carbon nanotube synergistically reinforced polymer fiber and a preparation method thereof. Background technique [0002] Graphene and carbon nanotubes are two research hotspots in the field of carbon materials. Graphene is a sp 2 A monoatomic sheet of carbon material with a two-dimensional (2D) structure composed of hybridized carbon atoms. Carbon nanotubes can be regarded as a one-dimensional (1D) tubular carbon material formed by curling graphene sheets. Carbon nanotubes can be divided into single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) according to the number of tube wall layers. ranging from microns to tens of microns. Compared with single-walled carbon nanotubes, multi-walled carbon nanotubes are more widely used in the fields of composite material preparation and electrical applications. Both ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10D01F6/92C08G69/14C08G69/08C08G63/183C08F292/00C08F212/08C08F222/06D01D5/08D01D10/02
Inventor 张兴祥周龙飞刘海辉于成功王宁
Owner TIANJIN POLYTECHNIC UNIV
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