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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, 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 absorption, is sensitive to humidity temperature, and affects dimensional stability, low temperature performance and electrical performance. and other shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of a kind of graphene / nylon reinforced composite material of the present embodiment comprises the following steps:

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

[0021] (2) Add surfactant N-methylpyrrolidone and coupling agent γ (2,3-epoxypropoxy) propyltrimethoxysilane to graphene slurry respectively, emulsify in ultrasonic equipment and high-speed shear The surfactant 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-dried to constant weight, drying temperature Be 80 ℃; The percentage by weight of graphene solid content in the graphene slurry is 10%, the addition of surfactant is 0.5% of the weight percentage of graphene solid content, the addition of coupling agent is the weight of graphene solid content 1% of the percentage.

[0022] (3) be in the nylon 6 of 74.6% by weight percent...

Embodiment 2

[0026] The preparation method of a kind of graphene / nylon reinforced composite material of the present embodiment comprises the following steps:

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

[0028] (2) Add surfactant N-methylpyrrolidone and coupling agent γ (2,3-epoxypropoxy) propyltrimethoxysilane to graphene slurry respectively, emulsify in ultrasonic equipment and high-speed shear The surfactant 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-dried to constant weight, drying temperature Be 80 ℃; The percentage by weight of graphene solid content in the graphene slurry is 10%, the addition of surfactant is 0.5% of the weight percentage of graphene solid content, the addition of coupling agent is the weight of graphene solid content 1% of the percentage.

[0029] (3) be in the nylon 6 of 89.6% by weight percent...

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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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