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Graphene nylon composite material and preparation method thereof

A nylon composite material and graphene technology are applied in the field of graphene-nylon composite materials and their preparation, which can solve the problems of poor wear resistance and thermal conductivity of nylon materials, and achieve improved thermal conductivity, good thermal conductivity, wear resistance, resistance to wear and tear. Abrasiveness-enhancing effect

Inactive Publication Date: 2017-05-10
NINGBO MORSH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nylon materials still have disadvantages such as wear resistance and poor thermal conductivity, which limit their wider application.

Method used

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  • Graphene nylon composite material and preparation method thereof

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preparation example Construction

[0075] The invention also provides a preparation method of the graphene nylon composite material. The preparation method comprises the following steps:

[0076] S1, mixing nylon, graphene, anti-wear agent, thermally conductive filler, lubricating dispersant and additives to obtain a mixture;

[0077] S2, adding the above mixture into an extruder, melting and mixing the components in the mixture by shearing, and finally extruding and granulating through the head of the extruder to obtain a graphene nylon composite material.

[0078] In step S1, mixing various components can be realized by a mixer or an internal mixer.

[0079] In step S2, the mixture is fed into the main feeding port of the extruder, and the materials that cannot be fed through the main feeding port are fed through the middle feeding port or the side feeding port. The speed of the extruder is 400 rpm to 720 rpm, the temperature of the first zone of the screw of the extruder is 150°C to 250°C, the temperature ...

Embodiment 1

[0083] Mix 50% of nylon, 25% of graphene, 1.2% of anti-wear agent, 6.5% of toughening agent, 12% of flame retardant, 4% of lubricating and dispersing agent, and 1.3% of auxiliary agent. Wherein, the nylon is PA6; the wear-resistant agent is molybdenum disulfide; the thermally conductive filler is high thermally conductive graphite; the toughening agent is styrene butyl acrylate binary graft modified propylene rubber, and the The flame retardant is nitrogen-phosphorus composite flame retardant HFR-19; the lubricating dispersant is stearic acid; the auxiliary agent is 0.3% of 168 antioxidant and 1% of silane coupling agent.

[0084] Melt, knead, extrude, cool, dry, and pelletize the mixture obtained above through a twin-screw extruder to obtain a graphene-nylon composite material. Wherein, the temperature of each zone in the extruder is as follows: the temperature of the first zone is 150°C to 200°C, the temperature of the second zone to the sixth zone is 220°C to 245°C, the tem...

Embodiment 2

[0086] Mix 50% of nylon, 15% of graphene, 1.2% of anti-wear agent, 10% of thermally conductive filler, 6.5% of toughening agent, 12% of flame retardant, 4% of lubricating and dispersing agent, and 1.3% of auxiliary agent. Wherein, the nylon is PA6; the wear-resistant agent is molybdenum disulfide; the thermally conductive filler is high thermally conductive graphite; the toughening agent is styrene butyl acrylate binary graft modified propylene rubber, and the The flame retardant is nitrogen-phosphorus composite flame retardant HFR-19; the lubricating and dispersing agent is stearic acid; the auxiliary agent is 0.3% of antioxidant BHT and 1% of silane coupling agent.

[0087] Melt, knead, extrude, cool, dry, and pelletize the mixture obtained above through a twin-screw extruder to obtain a graphene-nylon composite material. Wherein, the temperature of each zone in the extruder is as follows: the temperature of the first zone is 150°C to 200°C, the temperature of the second zon...

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Abstract

The invention relates to a graphene nylon composite material and a preparation method thereof. The graphene nylon composite material comprises, by mass, 30%-85% of nylon, 1%-25% of graphene, 0.5%-4% of a wear-proof agent, 5%-45% of heat conduction filler, 1%-15% of a lubrication dispersing agent and additives including at least one of 15%-45% of a reinforcing agent, 2%-25% of a toughening agent, 5%-30% of a fire retardant and 0.02%-8% of auxiliaries. Due to addition of graphene, the graphene nylon composite material is excellent in abrasion resistance and heat conductivity.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a graphene nylon composite material with high thermal conductivity and wear resistance and a preparation method thereof. Background technique [0002] Nylon has excellent comprehensive properties such as good mechanical properties, good flexibility, oil resistance, self-lubrication, etc., and is widely used in the fields of automobile industry, electronic and electrical industry, mechanical equipment, construction industry and so on. However, nylon materials still have disadvantages such as wear resistance and poor thermal conductivity, which limit their wider application. [0003] Graphene is a new material with a single-layer sheet structure composed of carbon atoms, and has the characteristics of high strength, large specific surface area, high chemical reactivity, and high filling. At the same time, graphene is currently the thinnest and hardest nanomaterial in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L51/04C08K13/02C08K3/30C08K3/04B29C47/92B29C48/92
CPCC08L77/00B29C48/92B29C2948/92704C08K2201/014C08L51/04C08K13/02C08K2003/3009C08K3/04
Inventor 卢尚琨高华刘小斌周旭荣周旭峰刘兆平茆玉宝
Owner NINGBO MORSH TECH
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