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High-property graphene/nylon 6 nanometer composite material and preparation method thereof

A nano-composite material, graphene technology, applied in the field of high-performance graphene/nylon 6 nano-composite material and its preparation, to achieve the effect of comprehensive performance improvement, less dosage and good processability

Active Publication Date: 2017-06-13
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, graphene / nylon 6 composite materials with ultra-low graphene addition, excellent comprehensive performance, and high-speed industrial multi-filament spinning (spinning speed greater than 600 m / min) have not been reported yet.

Method used

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  • High-property graphene/nylon 6 nanometer composite material and preparation method thereof
  • High-property graphene/nylon 6 nanometer composite material and preparation method thereof
  • High-property graphene/nylon 6 nanometer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of graphene / nylon 6 nanocomposite material, carry out as follows:

[0023] (1) Add 0.5 parts by mass of a single-layer modified graphene sheet with a lateral dimension of 3 microns and a carbon-to-oxygen ratio of 2.5 and 10 parts by mass of deionized water into the caprolactam melt of 100 parts by mass, and at 80 ° C at a high speed (300 ~500rpm) stirring and mixing to form a dispersion. The modified graphene is a single-layer graphene sheet with oxygen-containing functional groups such as carboxyl groups and hydroxyl groups on the surface.

[0024] (2) Under the protection of nitrogen, the above dispersion liquid is heated to 250-270°C in the polycondensation reactor, and reacted at 0.5-1MPa for 3 hours; then reacted under vacuum for 4 hours to obtain a polymer melt; The melted material was water-cooled and granulated to obtain a graphene / nylon 6 nanocomposite material.

[0025] The properties of the resulting graphene / nylon 6 nanocomposite are...

Embodiment 2

[0027] The preparation method of graphene / nylon 6 nanocomposite material, carry out as follows:

[0028] (1) The lateral dimension of 0.3 mass parts is 10 microns, the monolayer modified graphene sheet of carbon-to-oxygen ratio 3 and 8 mass parts deionized water are added in the caprolactam melt of 100 mass parts, under 80 ℃ high-speed (300 ~500rpm) stirring and mixing to form a dispersion. The modified graphene is a single-layer graphene sheet with oxygen-containing functional groups such as carboxyl groups and hydroxyl groups on the surface.

[0029] (2) Under the protection of nitrogen, the above dispersion liquid is heated to 250-270°C in the polycondensation reactor, and reacted at 0.5-1MPa for 3 hours; then reacted under vacuum for 4 hours to obtain a polymer melt; finally polymerized The melted material was water-cooled and granulated to obtain a graphene / nylon 6 nanocomposite material.

[0030] The properties of the resulting graphene / nylon 6 nanocomposite are shown ...

Embodiment 3

[0032] The preparation method of graphene / nylon 6 nanocomposite material, carry out as follows:

[0033](1) The lateral dimension of 0.2 mass parts is 15 microns, the monolayer modified graphene sheet of carbon-to-oxygen ratio 3.9 and 5 mass parts deionized water are added in the caprolactam melt of 100 mass parts, under 80 ℃ high-speed (300 ~500rpm) stirring and mixing to form a dispersion. The modified graphene is a single-layer graphene sheet with oxygen-containing functional groups such as carboxyl groups and hydroxyl groups on the surface.

[0034] (2) Under the protection of nitrogen, the above dispersion liquid is heated to 250-270°C in the polycondensation reactor, and reacted at 0.5-1MPa for 3 hours; then reacted under vacuum for 4 hours to obtain a polymer melt; The melted material was water-cooled and granulated to obtain a graphene / nylon 6 nanocomposite material.

[0035] The properties of the resulting graphene / nylon 6 nanocomposite are shown in Table 1.

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Abstract

The invention relates to a high-property graphene / nylon 6 nanometer composite material and a preparation method thereof. The preparation method comprises the following steps of performing in-situ polymerizing on single-layer high-quality modified graphene and caprolactam, so as to obtain the graphene / nylon 6 nanometer composite material, wherein the modified graphene is very low in adding amount, and has special size and carbon and oxygen ratio. The high-property graphene / nylon 6 nanometer composite material has the advantages that the graphene can realize the functions of a nucleating agent, an enhancing filler, ultraviolet protection and the like in the nylon 6; by adding a small amount of modified graphene, compared with the pure nylon, the mechanical property, high temperature-resistant property, anti-ultraviolet aging property and the like are obviously improved; the graphene has better dispersivity in a polymer matrix, the usage amount is little, the processibility of a final product is good, and the material can be used for industrialized multi-yarn high-speed spinning. The preparation method has the advantages that the preparation technology is simple and effective, the modification on the existing nylon 6 polymerizing equipment is not needed, and the production method is a production technique with market competitiveness.

Description

technical field [0001] The invention belongs to the field of nylon composite materials, and in particular relates to a high-performance graphene / nylon 6 nanocomposite material prepared with ultra-low graphene addition by an in-situ polymerization method and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional single-layer layered material composed of carbon atoms. Graphene itself has high strength (130GPa), high thermal conductivity (5000W m -1 K -1 ), high conductivity (108S m -1 ) and good gas barrier properties, it is an ideal layered nanofiller. Nylon 6 (polyamide 6) is the largest and most widely used product among nylon engineering plastics. It has good comprehensive performance and high cost performance. It can be used in many fields such as automobile industry, electric appliance industry, machinery industry and civil living materials. [0003] Therefore, the nylon nanocomposite obtained by uniformly dispersing graphene in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08G69/16C08K9/00C08K7/00C08K3/04
CPCC08G69/14C08G69/16C08K3/04C08K7/00C08K9/00
Inventor 高超韩燚陈琛杨清刘威李友良陈国贵
Owner HANGZHOU GAOXI TECH CO LTD
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