Method for preparing antistatic laminated material from graphene

An antistatic layer, graphene technology, applied in the directions of lamination, lamination device, lamination auxiliary operation, etc., can solve the problems of reducing the mechanical properties of composite materials, antistatic particles falling off, poor processing performance, etc., to eliminate static electricity. Harm, the effect of improving the quality of the application

Inactive Publication Date: 2011-08-31
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although metal conductive powders such as nickel, copper, and chromium have strong conductivity, they are expensive and have poor compatibility with prepolymers, which will lead to a significant decline in the mechanical properties of the product, which in turn affects the elasticity and flexibility of the material. It has its limitations when applied
[0006] Carbon-based filler antistatic agents such as conductive carbon black, graphite particles, and carbon fibers. These antistatic agents have good stability and low price. They are difficult to disperse in the colloid and have a large filling amount. Uneven dispersion will lead to antistatic on the surface of the product. Inhomogeneous performance, high filling content will make the processing performance worse, reduce the mechanical properties of the composite material, cause the antistatic particles to fall off, the resistivity is not easy to control, and the reproducibility is poor, etc.

Method used

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  • Method for preparing antistatic laminated material from graphene
  • Method for preparing antistatic laminated material from graphene

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Preparation of graphene homogeneous dispersion

[0025] Add 0.5g of graphite powder into 40.0g of NMP, and ultrasonicate at 250w for 6h to prepare a homogeneous dispersion of graphene in NMP.

[0026] (2) Preparation of melamine-formaldehyde prepolymerized resin

[0027] Melamine and formaldehyde undergo polycondensation reaction at a molar ratio of 1:2.5 to form a precipitation ratio of 1:1 (slowly drop 1mL of resin product into 1mL of distilled water, if the mixture is slightly turbid, it means that the precipitation ratio reaches 1:1) Melamine-formaldehyde prepolymerized resin.

[0028] (3) Preparation of antistatic veneer

[0029] The 4.9g graphene homogeneous dispersion liquid described in step (1) (the thickness of graphene is 5 ~ 10nm, size is 100nm 2 ~100μm 2 ) and 10 g of melamine-formaldehyde prepolymerized resin are mixed directly, and the antistatic melamine-formaldehyde prepolymerized resin glue is prepared by stirring evenly. Immerse a 3.0cm×3.0cm...

Embodiment 2

[0031] (1) Preparation of graphene homogeneous dispersion

[0032] Add 0.5 g of natural flake graphite into 40.0 g of NMP, and ultrasonicate at 250 w for 6 h to prepare a homogeneous dispersion of graphene in NMP.

[0033] (2) Preparation of melamine-formaldehyde prepolymerized resin

[0034] Melamine and formaldehyde undergo polycondensation reaction at a molar ratio of 1:2.5 to form a precipitation ratio of 1:1 (slowly drop 1mL of resin product into 1mL of distilled water, if the mixture is slightly turbid, it means that the precipitation ratio reaches 1:1) Melamine-formaldehyde prepolymerized resin.

[0035] (3) Preparation of antistatic veneer

[0036] The 4.9g graphene homogeneous dispersion liquid described in step (1) (the thickness of graphene is 5 ~ 10nm, size is 100nm 2 ~100μm 2 ) and 10 g of melamine-formaldehyde prepolymerized resin are mixed directly, and the antistatic melamine-formaldehyde prepolymerized resin glue is prepared by stirring evenly. Immerse a ...

Embodiment 3

[0038] (1) Preparation of graphene homogeneous dispersion

[0039] Add 0.4g of graphite powder into 40.0g of NMP, and ultrasonicate at 250w for 6h to prepare a homogeneous dispersion of graphene in NMP.

[0040] (2) Preparation of melamine-formaldehyde prepolymerized resin

[0041] Melamine and formaldehyde undergo polycondensation reaction at a molar ratio of 1:2.5 to form a precipitation ratio of 1:1 (slowly drop 1mL of resin product into 1mL of distilled water, if the mixture is slightly turbid, it means that the precipitation ratio reaches 1:1) Melamine-formaldehyde prepolymerized resin.

[0042] (3) Preparation of antistatic veneer

[0043] The 6.1g graphene homogeneous dispersion liquid described in step (1) (the thickness of graphene is 5 ~ 10nm, the size is 100nm 2 ~100μm 2 ) and 10 g of melamine-formaldehyde prepolymerized resin are mixed directly, and the antistatic melamine-formaldehyde prepolymerized resin glue is prepared by stirring evenly. Immerse a 3.0cm×3.0...

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Abstract

The invention relates to a method for preparing an antistatic laminated material from graphene, in particular to a method for preparing an antistatic laminated material from graphene in a novel nano-structure. The method comprises the following steps of: carrying out ultrasonic treatment on the mixed liquid of graphite and a solvent to prepare graphene uniform dispersion liquid; carrying out condensation polymerization between melamine and formaldehyde to obtain melamine-formaldehyde resin; uniformly mixing the graphene uniform dispersion liquid and the melamine-formaldehyde resin under the condition of stirring to form a conductive melamine-formaldehyde resin adhesive; fully soaking paper for a decorative board in the prepared antistatic melamine-formaldehyde resin adhesive; regularly laminating the dried paper soaked with resin; and combining the paper with other layers under the conditions of heating and pressing to form a laminated board. In the invention, by adding the graphene dispersion liquid into the melamine-formaldehyde resin, the surface resistance of a resin decorative laminated board reaches 105 ohms, and the surface resistance of a pure melamine-formaldehyde resin decorative laminated board reaches up to 1012-1014 ohms.

Description

technical field [0001] The invention relates to a method for preparing an antistatic laminated material using graphene with a novel nanostructure, in particular to the application of graphene in preparing an antistatic melamine-formaldehyde prepolymerized resin laminated material. Background technique [0002] Melamine-formaldehyde resin has excellent properties such as high bonding strength, fast curing speed, water resistance, heat resistance, wear resistance, chemical corrosion resistance, non-toxicity, and self-extinguishing. It has been widely used as wood adhesives, paper wet strength agents, and leather. Retanning agent, paint, textile finishing agent, electrical engineering plastics, impregnating agent, etc. However, the electrical insulation performance of this resin is very good, and its resistance value is generally as high as 10 12 ~10 14 Ω , in the process of processing and use, it is very easy to generate static electricity, and it is not easy to disappear. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B27/18B32B37/06B32B37/10B32B38/08
Inventor 陈海群章燕何光裕李丹汪信孙小强耿荣伟纪立新
Owner CHANGZHOU UNIV
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