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Graphene-functionalized polyphenyl ether/nylon 6 composite material and preparation method

A composite material and nanocomposite material technology, applied in the field of graphene functionalized polyphenylene ether/nylon 6 composite material and preparation, can solve the problems of poor heat resistance, poor organic solvent resistance, poor dimensional stability, etc. The effect of performance, simple operation process and high production efficiency

Active Publication Date: 2017-08-01
HANGZHOU GAOXI TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyphenylene ether (PPO) has excellent mechanical properties, high temperature creep resistance and dimensional stability, good electrical properties, heat resistance, flame retardancy and chemical stability, but also has some shortcomings, such as its The resistance to organic solvents is poor, and the products are prone to stress cracking, oxidation resistance and processing fluidity in ketone and vinegar solvents. In order to meet the needs of various purposes, PPO is usually modified. Generally, it is often used with Other plastic blending methods
Among them, nylon 6 (PA6) is an engineering plastic with excellent performance. Due to its high crystallinity, it has the advantages of good solvent resistance, high mechanical strength, and easy processing, but its impact strength is low and heat resistance is poor. Due to its high water absorption, the dimensional stability of the product is poor, which limits its application in some special occasions

Method used

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  • Graphene-functionalized polyphenyl ether/nylon 6 composite material and preparation method
  • Graphene-functionalized polyphenyl ether/nylon 6 composite material and preparation method

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preparation example Construction

[0018] The graphene-functionalized polyphenylene ether / nylon 6 composite material prepared in the present invention adopts ASTM standard injection molding, and the injection molding machine performs injection molding under the condition of 250-285°C.

[0019] Mechanical property test method:

[0020] 1. Tensile performance: tested according to GB / T1040-2006 standard, the tensile speed is 50mm / min;

[0021] 2. Bending performance: according to the CB / T9341-2008 standard test, the bending speed is 2mm / min;

[0022] 3. Izod notched impact strength: tested according to GB / T1843-2008 standard.

[0023] After the sample is formed, it is placed in a standard environment with a temperature of 23±2°C and a humidity of 50±5% for 88 hours before testing. The test environment is a temperature of 23±2°C and a humidity of 50±5%.

Embodiment 1

[0026] (1) Add 0.1 part by mass of modified graphene with a lateral dimension greater than 3 μm and 1 part by mass of deionized water into 100 parts by mass of caprolactam melt, and stir and mix at 80° C. at high speed (300 rpm) to form a dispersion. The modified graphene is a single-layer graphene with oxygen-containing functional groups such as carboxyl and hydroxyl groups on the surface; the carbon-to-oxygen ratio is 2.5;

[0027] (2) Under the protection of nitrogen, the above dispersion liquid was heated to 250°C in the polycondensation reactor, and reacted at 0.5MPa for 3 hours; then reacted under vacuum for 4 hours to obtain a polymer melt; finally, the polymer melt The graphene / nylon 6 nanocomposite material is obtained through water-cooling granulation.

[0028] (3) polyphenylene ether, graphene / nylon 6 nanocomposite material and PPO-g-MAH are counted as 50:45:5 in parts by weight, premixed in a mixer to obtain a uniformly mixed premix;

[0029] (4) Using a twin-scre...

Embodiment 2

[0032] (1) Add 1 part by mass of modified graphene with a lateral dimension greater than 3 μm and 10 parts by mass of deionized water into 100 parts by mass of caprolactam melt, stir and mix at 80° C. at high speed (300 rpm) to form a dispersion. The modified graphene is a single-layer graphene with oxygen-containing functional groups such as carboxyl and hydroxyl groups on the surface; the carbon-to-oxygen ratio is 6;

[0033] (2) Under the protection of nitrogen, the above dispersion liquid was heated to 220°C in the polycondensation reactor, and reacted at 1MPa for 3 hours; then reacted under vacuum for 4 hours to obtain a polymer melt; finally, the polymer melt was passed through Water-cooled granulation to obtain graphene / nylon 6 nanocomposites.

[0034] (3) Premixing polyphenylene ether, graphene / nylon 6 nanocomposite material and PPO-g-MAH in a proportioning ratio of 50:40:10 in parts by weight in a mixer to obtain a uniformly mixed premix;

[0035] (4) Using a twin-sc...

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Abstract

The invention provides a graphene-functionalized polyphenyl ether / nylon 6 composite material and a preparation method. The graphene-functionalized polyphenyl ether / nylon 6 composite material is prepared from polyphenyl ether (PPO), nylon 6, graphene and PPO-g-MAH. The method is characterized in that the polyphenyl ether / nylon 6 composite material and the polyphenyl ether are molten, co-blended and extruded, and a graphene / nylon 6 nanometer composite material is prepared by polymerizing modified graphene and caprolactam in situ. The prepared high-performance polyphenyl ether / nylon 6 composite material has high impact property, high rigidity, and more superior ultraviolet aging resistance, flame resistance, heat resistance and the like; the application prospect of the polyphenyl ether / nylon 6 composite material in higher-end fields is extended.

Description

technical field [0001] The invention belongs to the field of plastic modification, and in particular relates to a graphene-functionalized polyphenylene ether / nylon 6 composite material and a preparation method. Background technique [0002] Polyphenylene ether (PPO) has excellent mechanical properties, high temperature creep resistance and dimensional stability, good electrical properties, heat resistance, flame retardancy and chemical stability, but also has some shortcomings, such as its The resistance to organic solvents is poor, and the products are prone to stress cracking, oxidation resistance and processing fluidity in ketone and vinegar solvents. In order to meet the needs of various purposes, PPO is usually modified. Generally, it is often used with Other ways of plastic blending. Among them, nylon 6 (PA6) is an engineering plastic with excellent performance. Due to its high crystallinity, it has the advantages of good solvent resistance, high mechanical strength, ...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L77/02C08L51/08C08K9/00C08K9/04C08K3/04C08G69/16
CPCC08G69/16C08L71/12C08L2201/02C08L2201/08C08L2205/03C08L2205/08C08L77/02C08L51/08C08K9/00C08K9/04C08K3/04
Inventor 高超申瑜韩燚陈琛
Owner HANGZHOU GAOXI TECH CO LTD
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