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
CN101987908AInactive Publication Date: 2011-03-23CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Publication Date
2011-03-23
Estimated Expiration
Not applicable · inactive patent

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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