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Graphene reinforced ceramic matrix composite material and preparation method thereof

A composite material and graphene technology, applied in ceramic forming machines, manufacturing tools, etc., can solve problems such as easy agglomeration and inconspicuous toughening effect

Active Publication Date: 2020-01-17
SHENZHEN RES INST CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large specific surface area and van der Waals force of nano-carbon material derivatives, the characteristics of easy agglomeration and the chaotic arrangement of the reinforcing phase in the ceramic matrix in traditional solid-state molding lead to the problem that the toughening effect is not obvious, so how to de-agglomerate in the matrix , achieving uniform parallel distribution becomes the key and difficult point in the experimental process

Method used

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  • Graphene reinforced ceramic matrix composite material and preparation method thereof
  • Graphene reinforced ceramic matrix composite material and preparation method thereof
  • Graphene reinforced ceramic matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 (graphene 0.5vol%%)

[0039] Take graphene, bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), initiator Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (TPO), placed in a high-speed vacuum stirring defoamer machine and stirred evenly at a speed of 1800 rap for 3 minutes. Then use ultrasonic vibration to solve the problem of graphene agglomeration, power 100%, time 90min, degassing to obtain a premix, add powder ZrO to the premix 2 , PVP is stirred evenly in a high-speed vacuum stirring and defoaming agent machine, the speed is 1800, and the time is 3 minutes. Mix well to get the ceramic slurry,

[0040] The addition amount of each component in the ceramic slurry is as follows:

[0041]

[0042] Use the component slurry to perform light-curing molding. During the curing molding process, the thickness of the slice layer is 20 μm, and the time is 20 s;

[0...

Embodiment 2

[0044] Embodiment 2 (graphene 0.125vol%)

[0045] Take graphene, bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), initiator Diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (TPO), placed in a high-speed vacuum stirring defoamer machine and stirred evenly at a speed of 1800 rap for 3 minutes. Then use ultrasonic vibration to solve the problem of graphene agglomeration, power 100%, time 90min, degassing to obtain a premix, add powder ZrO to the premix 2 , PVP is stirred evenly in a high-speed vacuum stirring and defoaming agent machine, the speed is 1800, and the time is 3 minutes. Mix well to get the ceramic slurry,

[0046] The addition amount of each component in the ceramic slurry is as follows:

[0047]

[0048]

[0049] The composition slurry is used for photocuring molding. During the curing molding process, the thickness of the slice layer is 20 μm, and the time is ...

Embodiment 3

[0050] Embodiment 3 (graphene 0.25vol%)

[0051] Take bisphenol A epoxy acrylate (BAEA), trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA), isobornyl methacrylate (IBMA), diphenyl (2 , 4,6-trimethylbenzoyl) phosphine oxide (TPO), graphene stirring, defoaming to obtain a premix, ultrasonic dispersion and deagglomeration, adding powder ZrO to the premix 2 , PVP and mix to obtain ceramic slurry.

[0052] The addition amount of each component in the ceramic slurry is as follows:

[0053] BAEA: 2.00g

[0054] TMPTA: 2.00g

[0055] TPGDA: 3.00g

[0056] IBMA: 4.50g

[0057] TPO: 0.2000g

[0058] ZrO2: 30.0000g

[0059] PVP: 0.1500g

[0060] Graphene 0.027g

[0061] The composition slurry is used for photocuring molding. During the curing molding process, the thickness of the slice layer is 50 μm, and the curing time is 20s. Degreasing-sintering is carried out in an air atmosphere. / min to 300°C, keep warm for 120min, 1.0°C / min to 500°C, keep wa...

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Abstract

The invention discloses a graphene reinforced ceramic matrix composite material and a preparation method thereof, wherein the reinforcement body of the composite material comprises directionally arranged graphene, and the volume fraction of the graphene in the composite material is 0.125-1 vol%, the matrix of the composite material is at least one selected from zirconium oxide, silicon nitride andaluminum oxide, and the composite material is formed through 3D photocuring. According to the invention, the directionally arranged graphene reinforced ceramic matrix composite material formed by 3Dphotocuring is provided for the first time, the density of the obtained graphene-reinforced zirconium oxide ceramic reaches up to more than 99%, and the performance of the graphene-reinforced zirconium oxide ceramic is improved by more than 25% compared with the same process with no graphene adding.

Description

technical field [0001] The invention belongs to the scope of sheet structure forming, and specifically relates to a graphene-reinforced ceramic matrix composite material and a preparation method thereof. Background technique [0002] Additive manufacturing (AM) technology changes the traditional "equal-volume cutting and removal" manufacturing into "slice-by-layer stacking" manufacturing, which has many advantages such as short development cycle, no need for molds, and low cost. It is based on the principle of layering and superposition. First, the 3D model of the part is generated in the 3D modeling software, and then it is sliced, and the information of each layer is input to the manufacturing equipment, and the final arbitrarily complex 3D is obtained through the layer-by-layer accumulation of materials. Solid parts. [0003] At present, ceramic additive manufacturing technologies can be divided into four categories: 1) powder-based AM technologies including three-dimens...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/634C04B35/80B28B1/00C08F283/10C08F222/14C08F222/20C08F220/18C08F2/48
CPCC04B35/80C04B35/48C04B35/6344B28B1/001C08F283/105C08F2/48C04B2235/6026C04B2235/6562C04B2235/6567
Inventor 刘绍军蔡伟金李青
Owner SHENZHEN RES INST CENT SOUTH UNIV
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