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Preparation method of graphene/ceramic ordered composite material based on 3D printing

A composite material and 3D printing technology, applied in the field of 3D printing, can solve problems such as limiting the application and popularization of graphene/polymer composite materials, and discounting the performance of graphene, so as to overcome serious delamination problems, improve oxygen-rich performance, Infinitely delicate effect on the surface

Active Publication Date: 2021-04-27
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene is widely used as an additive in various composite materials, but due to technological limitations, the current traditional molding and general 3D printing methods cannot obtain composite materials in which graphene is uniformly distributed according to certain rules, which makes the properties of graphene itself It is greatly discounted in the material, which limits the application and popularization of graphene / polymer composites

Method used

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  • Preparation method of graphene/ceramic ordered composite material based on 3D printing
  • Preparation method of graphene/ceramic ordered composite material based on 3D printing
  • Preparation method of graphene/ceramic ordered composite material based on 3D printing

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A method for preparing a graphene / ceramic ordered composite material based on 3D printing, comprising the following steps:

[0063] Step 1: Print Model Preparation

[0064] First, import the 3D graphics into the slicing software in STL file format, and slice the model in layers after considering the printing time, material curable thickness, and accuracy requirements; then make the sliced ​​data into video files and import them into digital light processing module;

[0065] Step 2: Material slurry preparation

[0066] Mix zirconium n-propoxide and methacrylic acid at a ratio of 2:1, and add 1wt.% photoinitiator to prepare a ceramic precursor solution, and mix it with graphene according to a mass fraction of 99:1. The ball milling parameter is : 500r / min; time: 12h, pause for 10min every 1h, and then vacuum defoam for 2h to get the required composite material slurry;

[0067] The viscosity of the precursor composite material is 280mPs, and the graphene sheet uses indu...

Embodiment 2

[0076] Different from Example 1, the composite oxygen permeable membrane is made of PDMS / SiO 2 composed of

[0077] The upper layer is a surface-etched PDMS film with a thickness of 10 μm; the lower layer is PDMS / SiO 2 Composite film with a thickness of 50 μm.

[0078] The precursor used is polycarbosilazane and methacrylic acid mixed according to 2:1, and 1wt.% photoinitiator is added to prepare the molding ceramic precursor solution;

[0079] After printing, the molded part is removed and cleaned for sintering. The whole process of sintering is carried out in a tube furnace, protected by high-purity Ar gas, heated at 1°C / min to 600°C for 1 hour, then heated at 10°C / min to 1500°C for 2 hours, and then cooled naturally. Sintering to obtain a graphene / SiCN ceramic coating.

[0080] Test result shows, embodiment 1 and 2 have all realized the continuous orderly preparation of graphene / ceramic ordered composite material; After testing, the graphene / ceramic ordered composite ma...

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Abstract

The invention discloses a preparation method of a graphene / ceramic ordered composite material based on 3D printing. Printing equipment comprises a digital light processing module, a slurry tank, a printing platform and an external electric field, the digital light processing module conducts layering and slicing according to a printed model, a light beam penetrates through a composite oxygen permeable membrane and is irradiated on slurry to cure the slurry, the external electric field is arranged on the two sides of the interior of the slurry tank along with gradual upward movement of the printing platform in the z-axis direction, continuous printing of the graphene / ceramic precursor composite material is achieved, and the graphene sheets are orderly arranged in an auxiliary electric field. Then the preparation of the graphene sheet / ceramic ordered composite material is realized through a sintering step, the mechanical property and the electrical property are improved, and the bending strength and the toughness of the material are improved.

Description

technical field [0001] The present invention relates to the field of 3D printing, in particular to a method for preparing a graphene / ceramic ordered composite material based on 3D printing. Background technique [0002] The statements in this section merely mention background art related to the present disclosure and do not necessarily constitute prior art. [0003] Ceramic materials have outstanding advantages such as high strength, high hardness, high temperature resistance, oxidation resistance, corrosion resistance, stable chemical properties, and light weight (low density). Wide range of applications. However, ceramic materials have been facing the problem of poor toughness, which restricts the wider application of ceramic parts. [0004] Graphene, as a two-dimensional nanomaterial, has been widely concerned by academia and industry for its excellent optical properties, mechanical properties, and thermal and electrical properties. Graphene is widely used as an additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56C04B35/58C04B35/622B33Y10/00B33Y70/10
CPCC04B35/5603C04B35/58C04B35/622B33Y10/00B33Y70/10C04B2235/425C04B2235/6562C04B2235/6567C04B2235/661C04B2235/6026Y02P10/25
Inventor 张广明宋道森兰红波蒋进周欣琪李惠怡周雁祥宋伊凡
Owner QINGDAO TECHNOLOGICAL UNIVERSITY