Method for preparing high performance graphene-polyvinyl alcohol composite fiber

A polyvinyl alcohol and composite fiber technology, applied in the direction of fiber chemical characteristics, single-component synthetic polymer rayon, rayon manufacturing, etc., can solve problems such as not meeting product requirements, reduce neutralization, improve mechanical properties, enhance the effect of the interaction

Inactive Publication Date: 2018-07-06
重庆中科烯维科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the high-strength and high-modulus PVA fiber in my country mainly adopts boron-added spinning technology, and the obtained fiber contains a relatively high proportion of boron (usually 0.4%). With the increasing calls for environmental protection, it has gradually failed to meet the European requirements. Therefore, it is particularly important to develop the manufacturing technology of high-strength and high-modulus PVA fibers without boron and low production cost.

Method used

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  • Method for preparing high performance graphene-polyvinyl alcohol composite fiber
  • Method for preparing high performance graphene-polyvinyl alcohol composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of high-performance graphene-polyvinyl alcohol composite fiber preparation method is characterized in that, comprises the following steps:

[0049] 1) Capped isocyanate functionalization of graphene oxide quantum dots

[0050] Dissolve 100mg of graphene oxide quantum dots in 100ml of DMF, add 100mg of TDI, ultrasonically disperse for 30min, react at 80°C for 24h and cool to room temperature, centrifuge the product, wash it with ether for 3 times, and place the product in After drying at 60°C for 12 hours, isocyanate-functionalized graphene quantum dots were obtained;

[0051] Weigh 100 mg of isocyanate-functionalized graphene quantum dots and 100 ml of DMF, mix them with ultrasound for 20 minutes, add 100 mg of phenol as a blocking agent, heat the mixed solution to 90 ° C, and react for 5 hours; After washing three times, the solid product was vacuum-dried at 80° C. for 24 hours to obtain graphene quantum dots (GQDs) functionalized with blocked isocyanate groups...

Embodiment 2

[0063] A kind of high-performance graphene-polyvinyl alcohol composite fiber preparation method is characterized in that, comprises the following steps:

[0064] 1) Capped isocyanate functionalization of graphene oxide quantum dots

[0065] Dissolve 200mg of graphene oxide quantum dots in 100ml of DMF, add 150mg of HDI, ultrasonically disperse for 30min, react at 80°C for 24h, then cool to room temperature, centrifuge the product, wash it with ether for 3 times, and place the product in After drying at 60°C for 12 hours, isocyanate-functionalized graphene quantum dots were obtained;

[0066] Weigh 150 mg of isocyanate-functionalized graphene quantum dots and 100 ml of DMF to mix, and ultrasonicate for 20 minutes, add 100 mg of methyl ethyl ketone oxime as a blocking agent, heat the mixed solution to 80 ° C, and react for 3 hours; the mixed solution is centrifuged, and the After washing with ether three times, the solid product was vacuum-dried at 80° C. for 24 hours to obtain...

Embodiment 3

[0078] A kind of high-performance graphene-polyvinyl alcohol composite fiber preparation method is characterized in that, comprises the following steps:

[0079] 1) Capped isocyanate functionalization of graphene oxide quantum dots

[0080] Dissolve 300mg of graphene oxide quantum dots in 500ml of DMF, add 300mg of IPDI, ultrasonically disperse for 30min, react at 80°C for 24h, then cool to room temperature, centrifuge the product, wash it with ether for 3 times, and place the product in After drying at 60°C for 12 hours, isocyanate-functionalized graphene quantum dots were obtained;

[0081] Weigh 200 mg of isocyanate-functionalized graphene quantum dots and 200 ml of DMF, mix them with ultrasound for 20 minutes, add 300 mg of ethylene glycol monoethyl ether as a blocking agent, heat the mixed solution to 90 ° C, and react for 5 hours; After centrifuging, washing with ether three times, the solid product was vacuum-dried at 80° C. for 30 h to obtain graphene quantum dots (GQ...

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Abstract

The invention discloses a method for preparing high performance graphene-polyvinyl alcohol composite fiber, the method comprises the following steps: 1) functionalization of blocked isocyanate groupsof graphene quantum dots; 2) preparation of a spinning solution of polyvinyl alcohol-graphene quantum dots (PVA-GQD); 3) wet spinning; 4) post-treatment of nascent fibers; the method is simple, shortin process, low in cost and suitable for large-scale production, and does not require modification of existing polyvinyl alcohol wet spinning process equipment, and the prepared PVA-GQD fiber not onlyhas excellent mechanical properties and easy dispersibility, but also has a metallic luster, and is an ideal concrete reinforcement material, packaging material and clothing fabric.

Description

technical field [0001] The invention relates to the field of preparation of composite fibers, in particular to a method for preparing high-performance graphene-polyvinyl alcohol composite fibers. Background technique [0002] Polyvinyl alcohol (PVA) is a polymer with excellent performance and wide application. The high-performance fiber prepared from it has excellent corrosion resistance, weather resistance and good bonding performance with the substrate interface. It can be made into anti- Geotextiles with high tensile strength, good creep, wear resistance, chemical corrosion resistance, microbial resistance and excellent water conductivity are used in various construction projects such as dams, roads, railways, bridges, etc., which can significantly improve construction quality and reduce project costs . In addition, PVA fiber has outstanding comprehensive properties such as impact resistance, weather resistance and seawater corrosion resistance. It is suitable for variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/50D01F1/10
CPCD01F1/10D01F6/50
Inventor 王从元吴声坤潘长富池铫
Owner 重庆中科烯维科技有限公司
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