Preparation method of porous graphene-polymer composite material

A porous composite material and porous material technology, which is applied in the field of graphene-polymer composite material preparation, can solve problems such as few studies, and achieve the effects of large specific surface area, low cost and controllable pore structure

Inactive Publication Date: 2013-11-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on graphene-polymer composites with porous structures.

Method used

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  • Preparation method of porous graphene-polymer composite material
  • Preparation method of porous graphene-polymer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. In 100 parts of water, add 0.05 parts of GO, the average size of the GO sheet used is 5 μm. In the GO aqueous dispersion, add 0.025 parts of CTAB while stirring while dripping, and continue to sonicate for 40 min to make the dispersion uniform. Centrifuge and wash to remove excess surfactant. Re-dispersed in water, the mass fraction of GO at this time is 0.05%.

[0027] 2. In the above modified GO aqueous dispersion, add methyl methacrylate monomer, whose mass is 15% of the mass of the water phase, and add crosslinking agent ethylene glycol dimethacrylate, whose mass is mono 20% of the body mass, and finally add the initiator azobisisobutyronitrile, whose mass is 1% of the monomer mass.

[0028] 3. Homogenize the above mixed liquid at 5000 rpm for 15 min to form W / O type HIPE. The obtained HIPE is transferred to a hydrothermal reactor, filled with nitrogen and sealed. Put in 65 o C. In a blast oven, react for 24 h.

[0029] 4. Put the product obtained from the above re...

Embodiment 2

[0031] 1. The experimental device and operation are the same as in Example 1. Replace CTAB in Example 1 with di-C 10 A mixture of BA and dodecyltrimethylammonium bromide, where di-C 10 The weight ratio of BA to dodecyltrimethylammonium bromide is 2:1, the average size of the GO sheet is 50 nm, the mass fraction of the GO aqueous dispersion is changed to 0.2%, and the surfactant is twice the mass of GO .

[0032] 2. The experimental device and operation are the same as in Example 1. The monomer is changed to styrene, whose mass is 10% of the mass of the water phase; the cross-linking agent is changed to divinylbenzene, whose mass is 100% of the mass of styrene; initiator Changed to azobisisoheptonitrile, the mass is 2% of styrene.

[0033] 3. The experimental device and operation are the same as in Example 1. The homogenization is changed to ultrasonic treatment, the ultrasonic power is 1000 W, and the time is 50 min; the oven temperature is changed to 51 o C. The reaction time is ...

Embodiment 3

[0036] 1. The experimental device and operation are the same as in Example 1. The mass fraction of the GO aqueous dispersion in Example 1 is changed to 0.005%, the average size of the GO sheet is 20 μm, and the CTAB is changed to dodecyltrimethylammonium bromide , Its quality is 10% of GO quality.

[0037] 2. The experimental device and operation are the same as in Example 1. The monomer is changed to acrylamide, whose mass is 40% of the water phase; the crosslinking agent is changed to bisacrylamide, whose mass is 10% of the monomer; the initiator is changed to Potassium persulfate, its mass is 2% of the monomer; adding the porogen cyclohexane, the mass is 5 times that of the water phase.

[0038] 3. The experimental device and operation are the same as in Example 1. The speed is adjusted to 500 rpm; the time is changed to 5 min; the O / W type HIPE is obtained; the oven temperature is changed to 75 o C, the reaction time is changed to 8 h.

[0039] 4. The product obtained by the abo...

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Abstract

The invention belongs to the technical field of materials and particularly relates to a preparation method of a porous graphene-polymer composite material. According to the preparation method, a surface active agent is adopted to modify graphene oxide (GO); the modified graphene oxide is taken as a stabilizer of a Pickering emulsion; then, monomer, a cross-linking agent, an initiator and a pore-foaming agent are added into the modified graphene oxide; continuous phases are polymerized to prepare the graphene oxide / graphene-polymer composite material with a porous structure; polymer matrixes are removed through calcination to obtain porous graphene. The preparation method has the advantages that the process is simple, the cost is lower, and the porous graphene-polymer composite material prepared according to the preparation method is controllable in the hole structure (each hole diameter is 2-120 mum) and high in specific surface area.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a graphene-polymer composite material with a porous structure. Background technique [0002] Graphene has extremely excellent electrical properties, thermal properties, mechanical properties and gas barrier properties, and has important potential applications in many fields. Based on the excellent comprehensive properties of graphene, in the field of composite materials, graphene, as an ideal functional enhancer for polymer materials, has broad research prospects and practical value. Currently, a series of graphene-polymer composites with high electrical conductivity, high strength, and high modulus have been prepared by improving the dispersion of graphene in polymer matrices. However, graphene-polymer composites with porous structures are less studied. Composite materials with porous structures have important applications in the fields of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08F220/14C08F212/08C08F212/36C08F220/56C08F2/28C08F2/32C08J3/075C01B31/04
Inventor 郑正王海涛杜强国
Owner FUDAN UNIV
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