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Graphene reinforced polyketone fiber and preparation method thereof

A graphene and polyketone technology, applied in fiber processing, fiber chemical characteristics, stretch spinning, etc., can solve problems such as failure to prepare fibers, improve melt processability, improve crystallinity and crystal regularity , the effect of prolonging the required time

Inactive Publication Date: 2020-07-14
TIANJIN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these two documents failed to prepare fibers with a tensile strength above 10cN / dtex

Method used

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  • Graphene reinforced polyketone fiber and preparation method thereof
  • Graphene reinforced polyketone fiber and preparation method thereof

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preparation example Construction

[0022] The present invention provides a method for preparing graphene-reinforced polyketone fiber (method for short), which is characterized in that the method includes the following steps:

[0023] (1) The graphene and the surface treatment agent are mixed in a high-speed mixer at a high speed of 1000-5000rpm for 10-30 minutes until uniform; then the polyketone pellets are added to the high-speed mixer and continue to mix for 10-30 minutes until uniform, to obtain graphite Ene / polyketone mixture;

[0024] In the graphene / polyketone mixture, the graphene and the surface treatment agent are 0.05-2 mass parts, the polyketone is 98.0-99.95 mass parts, and the mass of the surface treatment agent is 10-30% of the graphene mass;

[0025] The graphene adopts graphene, graphene oxide, hydroxylated graphene, or carboxyl group with a radial dimension of nanometer or submicrometer (100nm-3μm), single-layer or few-layer (1-3 layers), and moisture content of less than 60ppm. Graphene;

[0026] Th...

Embodiment 1

[0035] (1) 0.2 parts by mass of 1-3 layers of graphene oxide with an average radial size of 1 μm is mixed with a mixture of 0.06 parts by mass of sodium dodecylbenzene sulfonate and 0.94 parts by mass of absolute ethanol and mixed at high speed Treated at 2000rpm in the machine for 20 minutes until uniform; then mixed with 99.74 parts by mass of polyketone resin (melt index 40g / 10min, propylene molar content is 6% of the total molar content of ethylene, carbon monoxide and propylene) and then mixed in a high-speed mixer Treat it at 2000 rpm for 20 minutes until it is uniform, let it stand for 30 minutes, take it out, and dry it under vacuum until the moisture content is less than 60 ppm;

[0036] (2) Into a single screw extruder with a diameter of 25mm, the temperature of the first to fourth areas of the screw are set to 180, 210, 230, and 230℃ respectively, the temperature of the elbow is 230℃, the temperature of the pump seat is 230℃, and the diameter of the spinneret hole 0.25...

Embodiment 2

[0040] (1) Using 1 to 3 layers of carboxylated graphene with an average radial size of 100 nm (carboxylated carbon atoms account for 4% of all carbon atoms) 0.05 parts by mass, and 0.01 parts by mass of 1-naphthoic acid and 0.99 parts by mass The mixture of parts of acetone is mixed in a high-speed mixer at 1800 rpm for 20 minutes to be uniform; then with 99.94 parts by mass of polyketone resin (melt index 20g / 10min, the molar content of propylene is the total molar content of ethylene, carbon monoxide and propylene 3%) after mixing in a high-speed mixer at 2000 rpm for 20 minutes until uniform, standing for 30 minutes and then taking it out, vacuum drying until the moisture content is less than 60 ppm;

[0041] (2) Into a single screw extruder with a diameter of 25mm, the temperature of zone 1 to zone 4 of the screw is set to 190, 220, 239, 239℃, the temperature of the elbow is 239℃, the temperature of the pump seat is 239℃, and the diameter of the spinneret hole 0.25mm, 96 hole...

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Abstract

The invention discloses a preparation method of graphene reinforced polyketone fibers. The preparation method comprises the following steps of firstly, uniformly mixing graphene with a surface treating agent; adding polyketone granules, and continuously melting and uniformly mixing to obtain a graphene / polyketone mixture; carrying out melt spinning on the graphene / polyketone mixture to prepare fused filaments; and finally, cooling the fused filaments through an air channel, and carrying out hot roller drafting and heat setting to prepare the graphene reinforced polyketone fibers. The grapheneis adopted as a reinforcing modification material of the polyketone, and is evenly dispersed in polyketone to play roles in an obstructing effect, a high heat conduction effect and a reinforcing effect. And the barrier property of graphene is utilized to weaken the acting force between ketone groups. A rate of transferring heat from the equipment to a polymer molecular chain is increased, and thetime required for the polyketone to form a crystal-nucleus-free melt is shortened. In the drafting process, the graphene is oriented in the axial direction of the fiber, polyketone molecular chains are induced to regularly grow and be arranged on the surface of the graphene, a string-shaped crystalline structure is formed, and the ultrahigh-strength polyketone fiber is obtained.

Description

Technical field [0001] The invention relates to a preparation technology of high-performance fibers, in particular to a graphene reinforced polyketone fiber and a preparation method thereof. Background technique [0002] High-performance fibers, especially fibers with excellent physical and mechanical properties, are necessary materials for national defense, military industry, sports, and industrial equipment. Polyhexamethylene adipamide (PA66), polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) are commonly used raw materials for the preparation of industrial yarns. The polycondensation reaction product is further solid-phased. High-molecular-weight polymers can be obtained after viscous or liquid-phase viscosity increase, and then indirect or direct melt spinning can produce high-strength industrial yarns, which are widely used in tire cords, ropes, cable sheaths, conveyor belts and other fields. "Tire Industry (2007,27(10):618)" discloses the preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10D01D10/02D01D5/16D01D5/092C08G67/02
CPCD01F6/94D01F1/10C08G67/02D01D5/092D01D5/16D01D10/02
Inventor 张兴祥程庆宝江四九高雪峰于文广王学晨
Owner TIANJIN POLYTECHNIC UNIV
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