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Composite material as well as preparation method and application thereof

A technology of composite materials and composite wires, applied in chemical instruments and methods, additive manufacturing, tungsten compounds, etc., can solve the problems of small performance improvement, reduce disorderly arrangement, ensure integrity and continuity, conductivity and The effect of improving the mechanical properties

Pending Publication Date: 2022-03-29
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene exists in the form of fragments in the method, and the performance improvement is small

Method used

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  • Composite material as well as preparation method and application thereof
  • Composite material as well as preparation method and application thereof
  • Composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] This embodiment provides a composite material and a preparation method thereof, and the specific steps are as follows:

[0091] (1) In the tube furnace, with CH 4 As a carbon source, the temperature is 1045 ° C, and graphene is grown on a copper substrate with a length and width of 13 cm for 20 minutes to obtain a graphene film with a thickness of 0.34 nm; the graphene film includes single-layer graphene;

[0092] (2) The polylactic acid dispersion with a solid content of 1.7% (polylactic acid is purchased from Aurora Volvo, brand PLA-1.75mm, and the solvent is dichloromethane) is spin-coated by a centrifugal homogenizer at a speed of 4000r / min. The graphene film is away from the surface of the copper substrate, spin-coated for 30s, and after drying, the copper substrate is removed by etching with an ammonium persulfate solution with a concentration of 0.5mol / L to obtain a composite film comprising a graphene film and a polylactic acid layer. The thickness of the polyl...

Embodiment 2

[0096] This embodiment provides a method for preparing a composite material. The difference between it and Embodiment 1 is that in step (1), molybdenum oxide and sulfur element are used as raw materials to grow molybdenum sulfide on the substrate, and other steps and parameters are the same as those in the embodiment. Example 1 is the same.

Embodiment 3

[0098] This embodiment provides a method for preparing a composite material. The only difference between it and Embodiment 1 is that in step (1), tungsten oxide and sulfur element are used as raw materials to grow tungsten sulfide on the substrate, and other steps and parameters are the same as those in the embodiment. Example 1 is the same.

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Abstract

The invention provides a composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) growing a two-dimensional material on a substrate by adopting a chemical vapor deposition method to obtain a two-dimensional material film; (2) coating the surface, far away from the substrate, of the two-dimensional material film with a polymer to obtain a composite film containing the two-dimensional material film and a polymer layer; transversely shearing and rolling the composite film to obtain a composite wire; and (3) carrying out 3D printing on the composite wire rod to obtain the composite material, the composite material obtained by the preparation method provided by the invention has specific configuration and functions; according to the preparation method, the two-dimensional film material can be uniformly dispersed in the three-dimensional composite material, and the mechanical or electrical properties of the composite material can be improved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a composite material and its preparation method and application. Background technique [0002] Two-dimensional materials refer to materials in which electrons can only move freely on the nanoscale in two dimensions. Due to the peculiar properties of two-dimensional materials, they are often added to polymers to prepare high-performance materials. Among them, graphene is the first two-dimensional material to be isolated, and it is a kind of carbon atom with sp 2 Two-dimensional carbon nanomaterials composed of hybrid orbitals with a hexagonal honeycomb lattice structure have high strength, good electrical and thermal conductivity, and are widely used in semiconductors, electronic appliances, energy, composite materials and other fields. Especially in the field of composite materials, graphene is suitable for developing low-weight and high-performance com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/314B33Y40/10B33Y70/10C01B32/186C01B32/194C01G39/06C01G41/00
CPCB29C64/314B33Y40/10B33Y70/10C01B32/186C01B32/194C01G39/06C01G41/00
Inventor 王斌徐帅帅
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA