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Graphene-modified polyamide 66/polyamide 6 fiber and preparation method and application thereof

A graphene modification, graphene technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve the problem of uneven dispersion, achieve the effect of expanding performance and application fields, improving performance and application fields

Active Publication Date: 2019-08-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by this invention is to provide a kind of graphene modified nylon 66 / nylon 6 fiber and its preparation. Uniformly dispersed in the caprolactam melt solution, the short-chain nylon 6-graphene composite was prepared by ring-opening in situ polymerization, and then the prepared prepolymer composite was added to the nylon 66 polymerization system, which overcomes the problem of direct introduction of graphene To the shortcomings of uneven dispersion in the nylon 66 polymerization system, in-situ polymerization plus copolymerization to prepare graphene-modified nylon 66 and nylon 6 slices, and melt spinning the above slices to obtain nylon 66 / nylon 6 / graphene nanocomposite fibers

Method used

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  • Graphene-modified polyamide 66/polyamide 6 fiber and preparation method and application thereof
  • Graphene-modified polyamide 66/polyamide 6 fiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesis of PA6 / graphene samples:

[0037] Weigh 10.35g of graphene oxide, add it to 230g of molten caprolactam liquid, ultrasonically disperse it for 2h, then transfer it to a 500ml three-neck flask, add 0.3g of adipic acid and 9g of water at the same time, set the temperature of the oil bath so that the inside of the flask The temperature was raised to 230°C and kept for 3 hours, then the temperature was raised to 240°C to terminate the reaction. The sample was poured out, and after cooling, it was pulverized by a pulverizer for use.

Embodiment 2

[0039] Nylon 66 / nylon 6 / graphene slice sample preparation:

[0040] Get 134g of the sample in Example 1 and join in 1366g of nylon 66 saline solution, wherein the concentration of the saline solution is 50wt%, add molecular weight regulator hexamethylenediamine 9.5g simultaneously, stabilizer SEED 15g, matting agent titanium dioxide 3g, water bath Stir in the middle for 1h, transfer to a 5L polymerization reactor, heat the temperature in the kettle to 205°C, keep the pressure at 1.3MPa, react for 1.5h, then gradually raise the temperature to 290°C, and at the same time gradually reduce the pressure in the kettle to normal pressure, react for 2h, and prepare Obtain graphene-modified nylon 66 / nylon 6 composite slices.

Embodiment 3

[0042] Graphene modified nylon 66 / nylon 6 fiber:

[0043] The prepared nylon 66 / nylon 6 / graphene slices were dried in a vacuum drying oven at 100°C for 8 hours, extruded through a screw, the temperature of the first zone was 290°C, the temperature of the second zone, the third zone and the fourth zone was 320°C, and the melt transfer elbow The temperature is 320°C, the speed of the metering pump is 30R / min, and the temperature is 320°C. After passing through the spinneret (that is, the component, the temperature is 320°C), the primary fiber is formed, which is the fine fluid of the sample nylon 66 / nylon 6 / graphene. The air is condensed and solidified into fiber filaments. Among the guide rollers, the speed of the first roller is 1000m / min, the speed of the second roller is 1020m / min, and the winding speed is 1020m / min. The denier of the prepared single filament is 687dtex to obtain graphene-modified nylon 66 / nylon 6 The as-spun fiber was stretched 4.3 times, and the post-drawi...

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Abstract

The invention relates to a graphene-modified polyamide 66 / polyamide 6 fiber and a preparation method and application thereof. The fiber is prepared from graphene, PA66 salt, hexamethylenediamine, adipic acid, water, caprolactam and / or 6-aminocaproic acid. The preparation method comprises the steps that in-situ reduction polymerization is adopted, a low-molecular-weight composite material with high-concentration polyamide 6 / graphene is prepared, then the composite material is added into a PA66 polymerization system, and graphene-modified polyamide 66 and polyamide 6 chips are prepared through in-situ polymerization and copolymerization; the chips are subjected to melt spinning, and the polyamide 66 / polyamide 6 / graphene nanometer composite fiber is prepared. According to the method, the PA6 / graphene is introduced into the PA66 system, and the PA66 / PA6 fiber with uniform dispersion and good mechanical performance is prepared.

Description

technical field [0001] The invention belongs to the field of modified nylon 66 / nylon 6 fiber and its preparation and application, and in particular relates to a graphene-modified nylon 66 / nylon 6 fiber and its preparation and application. Background technique [0002] Graphene, as a nanomaterial with superior performance, has received extensive attention and research since its birth. Nylon fiber is one of the earliest synthetic fibers put into industrial production in the world, and its output ranks second among synthetic fibers. However, with the continuous improvement of living standards and the continuous development of industrial society, traditional nylon fiber products are increasingly unable to meet various performance requirements. [0003] The introduction of graphene into nylon greatly improves the mechanical properties of nylon. However, most of the existing ones on the market are used as engineering plastics, graphene-modified nylon fibers, and no related produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10
CPCD01F6/90D01F1/10
Inventor 俞昊段小超黄涛杨通辉吴燕鹏陈召陈永昶
Owner DONGHUA UNIV
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