Method for preparing graphene modified polyformaldehyde composite material

A technology of graphene modification and composite materials, which is applied in the field of polymer materials, can solve problems such as difficulty in compounding and hindering the development of high-performance composite materials, and achieve the effects of simple preparation process, good dimensional stability, and improved comprehensive performance

Inactive Publication Date: 2014-07-23
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of functional groups on the surface of ordinary graphene, it is difficult to compound with polyoxymethylene (POM), which hinders the development of graphene-modified polyoxymethylene to prepare high-performance composite materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of a graphene-modified polyoxymethylene composite material, specifically: adding 0.1g of alkoxylated graphene and 100g of homopolyoxymethylene into an internal mixer, stirring and reacting at 180°C for 2h, discharging, and drying at room temperature Sliced ​​after drying.

Embodiment 2

[0021] A preparation method of a graphene-modified polyoxymethylene composite material, specifically: adding 0.2g of alkoxylated graphene and 100g of homopolyoxymethylene into an internal mixer, stirring and reacting at 170°C for 24h, discharging, and drying at room temperature Sliced ​​after drying.

Embodiment 3

[0023] A preparation method of a graphene-modified polyoxymethylene composite material, specifically: adding 0.4g of alkoxylated graphene and 100g of polyoxymethylene copolymer into a blending extruder, stirring and reacting at 180°C for 2h, discharging, and keeping at room temperature Sliced ​​after drying.

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PUM

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Abstract

The invention belongs to the technical field of high polymer materials and in particular relates to a method for preparing a graphene modified polyformaldehyde composite material. The method specifically comprises the following steps: adding the modified graphene and polyformaldehyde into a reactor according to a weight ratio of (0.0001-1.0): 1, stirring and reacting at the temperature of 140-200 DEG C for 0.1-96 hours, discharging, drying at room temperature, and forming to obtain the material. According to the method, the graphene is uniformly dispersed in a polyformaldehyde matrix, and the interface bonding force between the graphene and the polyformaldehyde is improved, so that the performances, such as tensile strength, notch impact strength and breaking elongation, of the polyformaldehyde composite material are improved, and the polyformaldehyde composite material can be applied to the fields of automobiles, electric products, machinery, precise instruments and building materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a method for preparing a graphene-modified polyoxymethylene composite material. The graphene-modified polyoxymethylene material can be used to prepare various new polyoxymethylene products with excellent performance , can be widely used in automobiles, electronic appliances, machinery, precision instruments and building materials and other fields. Background technique [0002] Graphene is a new material with unique properties discovered in 2004. It is a two-dimensional hexagonal lattice structure composed of carbon atoms, with a single atomic layer or several atomic layers thick. Graphene has many advantages such as high electrical and thermal conductivity, good mechanical strength, etc., and has been widely used in the fields of materials and engineering. Graphene with a complete structure is a two-dimensional crystal composed of stable benzene six-membere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08L59/04C08K9/00C08K3/04
Inventor 石家华陈跃文李润明
Owner HENAN UNIVERSITY
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