Preparation method of graphene/nylon enhanced composite material

A technology for reinforced composite materials and graphene, which is applied in the field of preparation of graphene/nylon reinforced composite materials, can solve the problems of sensitivity to humidity temperature, high water absorption of nylon, low friction coefficient, etc., and achieve easy operation, simple steps, and improved compatibility effect

Inactive Publication Date: 2018-02-27
青岛万林橡塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nylon used as an engineering plastic has the advantages of high mechanical strength, low friction coefficient, good self-lubrication, shock absorption and noise reduction, excellent barrier properties, heat resistance, wear resistance, chemical resistance, etc., and can be widely used It is widely used in automobile industry, electroni

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0018] Example 1

[0019] In this embodiment, a method for preparing a graphene / nylon reinforced composite material includes the following steps:

[0020] (1) Put the nylon resin in an oven at 100°C for 4 hours;

[0021] (2) Add the surface active agent N-methylpyrrolidone and the coupling agent γ(2,3-glycidoxy)propyltrimethoxysilane to the graphene slurry respectively, and emulsify them in ultrasonic equipment and high-speed shearing. The surface active agent and coupling agent in the machine respectively disperse the graphene, the ultrasonic power is 6000W, the ultrasonic time is 1.5h, the shear speed is 8000r / min, and the time is 2h, and then vacuum drying to constant weight and drying temperature It is 80℃; the weight percentage of graphene solid content in graphene slurry is 10%, the addition amount of surfactant is 0.5% of the weight percentage of graphene solid content, and the addition amount of coupling agent is the weight percentage of graphene solid content 1% of the per...

Example Embodiment

[0025] Example 2

[0026] In this embodiment, a method for preparing a graphene / nylon reinforced composite material includes the following steps:

[0027] (1) Put the nylon resin in an oven at 100°C for 4 hours;

[0028] (2) Add the surfactant N-methylpyrrolidone and the coupling agent γ(2,3-glycidoxy)propyltrimethoxysilane to the graphene slurry separately, and emulsify the mixture in ultrasonic equipment and high-speed shearing. The surface active agent and coupling agent in the machine respectively disperse the graphene, the ultrasonic power is 6000W, the ultrasonic time is 1.5h; the shear speed is 8000r / min, the time is 2h, and then vacuum drying to constant weight, drying temperature It is 80℃; the weight percentage of graphene solid content in graphene slurry is 10%, the addition amount of surfactant is 0.5% of the weight percentage of graphene solid content, and the addition amount of coupling agent is the weight percentage of graphene solid content 1% of the percentage.

[0...

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Abstract

The invention discloses a preparation method of a graphene/nylon enhanced composite material. The preparation method comprises the following steps: (1) drying nylon; (2) carrying out surface dispersion treatment on graphene by utilizing a surfactant and a coupling agent; (3) after mixing the treated graphene, the nylon and a thermal stabilizer in a high mixing machine, adding the mixture into a double-screw extruder and extruding and granulating; taking extruded particles as master batches to use; (4) after mixing the master batches, the nylon, the thermal stabilizer and a toughening agent inthe high mixing machine, adding the mixture into the double-screw extruder and extruding and granulating to prepare the graphene/nylon enhanced composite material. The graphene/nylon enhanced composite material disclosed by the invention has high strength, excellent low-temperature toughness and high wear-resisting performance, and can be used for preparing parts with bearing weight and relative movement, such as an abrasion disc and an abrasion plate of a central disc for automobiles and railway wagons; the graphene/nylon enhanced composite material disclosed by the invention has excellent comprehensive performance, the damage rate of the parts can be reduced and the service life of the parts is prolonged; the operation safety of vehicle bodies of the automobiles and the railway wagons isimproved; therefore, the graphene/nylon enhanced composite material prepare by the method has a wide market application prospect.

Description

technical field [0001] The invention relates to the field of polymer / inorganic compound high-performance nano-composite materials, specifically, graphene is surface-treated by surfactants and coupling agents, and then nylon, graphene and other auxiliary agents are mixed with a twin-screw extruder A method for preparing graphene / nylon reinforced composite material is obtained by melt blending by means of external mechanical force. Background technique [0002] Nylon used as an engineering plastic has the advantages of high mechanical strength, low friction coefficient, good self-lubrication, shock absorption and noise reduction, excellent barrier properties, heat resistance, wear resistance, chemical resistance, etc., and can be widely used It is widely used in automobile industry, electronic and electrical communication field, film packaging field, military and aerospace industry, rail transit industry and other fields; but at the same time, nylon also has high water absorpt...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K9/04C08K9/06C08K3/04C08J3/22
Inventor 郑丛丛韩立静
Owner 青岛万林橡塑科技有限公司
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