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Method for preparing graphene-epoxy resin composite material

A technology of epoxy resin and composite materials, which is applied in the field of preparation of graphene-epoxy resin composite materials, can solve the problems of environmental pollution, complicated preparation methods, and few preparation methods, and achieve good monodispersity and simple operation process , the effect of controllable load

Inactive Publication Date: 2011-03-23
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are few preparation methods for graphene-epoxy resin composite materials. The existing methods use the organic solvent acetone as the reaction medium, and the preparation methods are relatively complicated and have environmental pollution.

Method used

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  • Method for preparing graphene-epoxy resin composite material

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Experimental program
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Effect test

Embodiment 1

[0010] Mix bisphenol A epoxy resin E51 and 0.3mg / mL graphene aqueous solution at a volume ratio of 1:0.5, control the temperature at 120°C, stir for 5 minutes, and stand still for 30 minutes to separate layers. Pour out the upper layer of aqueous solution, and the lower layer of graphite The alkene-epoxy resin continued to stir and react at 80°C for 12 hours, then added epoxy resin curing agent H-1618 (Shijiazhuang Huili Chemical Co., Ltd., Shijiazhuang, Hebei, China), and cured at 100°C for 1 hour, and then cured at 150°C After 2 hours, a cured graphene-epoxy composite material was obtained.

Embodiment 2

[0012] Bisphenol A epoxy resin E44 and 0.3mg / mL graphene aqueous solution were mixed at a volume ratio of 1:1, the temperature was controlled at 100°C and stirred for 10 minutes, and the layers were separated after standing still for 30 minutes. The upper layer of aqueous solution was poured out, and the lower layer of graphene - Continue to heat the epoxy resin at 90°C and stir for 10 hours, add epoxy resin curing agent H-1618 (Shijiazhuang Huili Chemical Co., Ltd., Shijiazhuang, Hebei, China), and cure at 100°C for 1 hour, and then cure at 150°C for 2 hours hours, a cured graphene-epoxy composite was obtained.

Embodiment 3

[0014] Trifunctional epoxy resin TDE-85 was mixed with 0.3 mg / mL graphene aqueous solution at a volume ratio of 1:1.5 (trifunctional epoxy resin TDE-85, Tianjin Jindong Chemical Plant, Tianjin, China), and the temperature was controlled at 90 Stir at ℃ for 20 minutes, stand still for 30 minutes to separate layers, pour out the upper layer of aqueous solution, continue to heat the lower layer of graphene-epoxy resin at 100°C and stir for 8 hours, add epoxy resin curing agent H-1618 (Shijiazhuang Huili Chemical Co., Ltd., Shijiazhuang, Hebei, China), and cured at 100°C for 1 hour, and then cured at 150°C for 2 hours to obtain a cured graphene-epoxy composite material.

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Abstract

The invention provides a method for preparing a graphene-epoxy resin composite material, comprising the following steps of mixing epoxy resin and a graphene solution in ratio; controlling the temperature at 60-120 DEG C; stirring for 5-60min; standing for 30min to layer; pouring out an aqueous solution at the upper layer; continuously stirring graphene-epoxy resin at the lower layer at the temperature of 80-150 DEG C and reactng for 2-12h; adding an epoxy resin curing agent, curing for 1h at the temperature of 100 DEG C, and then curing for 2h at the temperature of 150 DEG C, wherein the used epoxy resin is bifunctional bisphenol A epoxy resin or bifunctional epoxy resin. The method has the advantages of no environmental pollution in aqueous-phase reaction, recyclable water at the upper layer, simple operation process and controllable loading and is easy for preparation and synthesis in large scale. The prepared graphene-epoxy resin composite material has good monodispersity. Compared with an epoxy resin composite material, the rigidity of the prepared graphene-epoxy resin composite material is increased by above 50 percent, and the impact resistance is increased by near 12 times.

Description

technical field [0001] The invention discloses a preparation method of a graphene-epoxy resin composite material. Background technique [0002] Epoxy resin is an oligomer polymerized by molecules containing more than two epoxy groups, which can react with a curing agent to form a three-dimensional network thermosetting plastic. Epoxy resin has excellent properties such as bonding, corrosion resistance, and insulation, and is widely used in adhesives, coatings, electrical insulation materials, and composite materials. Due to the characteristics of high strength and low density, epoxy resin composite materials have gradually become one of the indispensable basic materials in the industrial field. Because the cured product has excellent characteristics such as strong adhesive force, good electrical insulation performance, strong stability and small shrinkage rate, it has been widely used in the fields of coatings, electronics, composite materials and bonding. In addition, thr...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08K13/02C08K3/04
Inventor 牛利张齐贤杨化峰邓鹏飏韩冬雪范立双
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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