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A kind of preparation method and application of anti-corrosion coating graphene microchip composite material

A graphene micro-sheet, composite material technology, applied in anti-corrosion coatings, conductive coatings, coatings, etc., can solve problems such as difficulty in dispersion, easy re-aggregation of graphene, etc., to delay corrosion rate, improve comprehensive performance, wear resistance, etc. Sex-enhancing effects

Active Publication Date: 2017-07-28
GUANGXI SHENGLONG METALLURGICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defect that graphene is difficult to disperse in the application of anti-corrosion coatings at present, and the defects that the layers of graphene are easy to overlap and gather again, the present invention proposes a preparation method and application of graphene micro-chip composite material for anti-corrosion coatings. Graphite is the main raw material, and the graphene microflake composite material is obtained by continuous grinding, dispersion, intercalation, and shear exfoliation with a screw extruder, which is used for anti-corrosion coatings and has good dispersion and barrier properties

Method used

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  • A kind of preparation method and application of anti-corrosion coating graphene microchip composite material

Examples

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Embodiment 1

[0032] The preparation method of metal anticorrosion coating graphene microchip composite material:

[0033] (1) Disperse and mix 40 parts by weight of natural flake graphite, 20 parts by weight of No. 70 chlorinated paraffin, 15 parts by weight of hydrogenated dimer acid, and 5 parts by weight of potassium aluminum sulfate dodecahydrate through a high-speed mixer for 30 minutes to obtain a pre- mixture;

[0034](2) Pump the premix obtained in step (1) into a co-rotating twin-screw extruder, and the screw extruder is sequentially equipped with a grinding section, a dispersion section, an intercalation section, and a shearing and peeling section from the feed end to the discharge end , the grinding section, dispersing section, intercalation section, and shear stripping section of the screw extruder are assembled on the screw in the form of threaded elements in the form of building blocks, thus forming a continuous reactor, wherein: the grinding section is a flat roller thread ...

Embodiment 2

[0039] The preparation method of concrete anticorrosion coating graphene microchip composite material:

[0040] (1) 50 parts by weight of graphite flakes with a radial dimension greater than 50 microns and a carbon content greater than 95%, 25 parts by weight of No. 70 chlorinated paraffin, 10 parts by weight of dimer acid polymerized from soybean oleic acid, The potassium aluminum sulfate dodecahydrate of 5 parts by weight is dispersed and mixed by a high-speed mixer for 30min to obtain a premix;

[0041] (2) Pump the premix obtained in step (1) into the co-rotating three-screw extruder, and the screw extruder is sequentially equipped with a grinding section, a dispersion section, an intercalation section, and a shearing and peeling section from the feed end to the discharge end , the grinding section, dispersing section, intercalation section, and shear stripping section of the screw extruder are assembled on the screw in the form of threaded elements in the form of building...

Embodiment 3

[0045] The preparation method of wood anticorrosion coating graphene microchip composite material:

[0046] (1) 45 parts by weight of natural flake graphite, 30 parts by weight of No. 70 chlorinated paraffin, 15 parts by weight of canola fatty acid polymerized dimer acid, and 5 parts by weight of potassium aluminum sulfate dodecahydrate are passed through High-speed mixer dispersed and mixed for 45 minutes to obtain the premix;

[0047] (2) Pump the premix obtained in step (1) into a co-rotating four-screw extruder, and the screw extruder is sequentially equipped with a grinding section, a dispersion section, an intercalation section, and a shearing and peeling section from the feed end to the discharge end , the grinding section, dispersing section, intercalation section, and shear stripping section of the screw extruder are assembled on the screw in the form of threaded elements in the form of building blocks, thus forming a continuous reactor, wherein: the grinding section ...

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Abstract

The invention provides a preparation method and an application of a graphene microchip composite for an anticorrosive coating. According to the method, natural flake graphite is taken as a main raw material, a screw extruder is used as a continuous reactor and used for continuous grinding, dispersing, intercalation and shearing stripping, flaws are formed on the boundary of flake graphite through chlorinated paraffin and dimer acid, the flake graphite is effectively stripped to form graphene microchips through intercalation of an aluminum potassium sulfate solution, integrated stripping and composition of the graphene microchips are realized, follow-up cleaning and removal are not required, and the graphene microchip composite is directly used for the anticorrosive coating for concrete, wood and metal and has excellent dispersibility and blocking characteristic; the defects that the graphene microchips are difficult to disperse and are easily overlapped again and gathered when applied to the anticorrosive coating are overcome, continuous and closed production of the graphene microchip composite is realized, and the graphene microchip composite has remarkable market application value.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a special graphene material for anti-corrosion coatings, in particular to a preparation method and application of a graphene microchip composite material for anti-corrosion coatings. Background technique [0002] Ideal graphene has a perfect physical structure and excellent mechanical, electronic, thermal, and chemical properties. Since the discoverers of graphene, Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom, won the Nobel Prize in 2010, the research on graphene has begun to be valued. The preparation of graphene into powder is more conducive to the application of graphene. For example, graphene material powder can be used as an additive for anti-corrosion coatings to improve the wear resistance and corrosion resistance of coatings. [0003] Graphite originally has a layered structure that can be exfoliated, so graphene can be obtai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/08C09D5/24C09D7/12
CPCC09D1/00C09D5/08C09D5/24C09D7/63C09D7/65
Inventor 陈庆曾军堂叶任海
Owner GUANGXI SHENGLONG METALLURGICAL CO LTD