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Ultrasonic responsive 4D printed porous ceramic part and preparation method thereof

A porous ceramic and ultrasonic technology, applied in ceramic products, ceramic molding machines, applications, etc., can solve the problem that ceramic parts do not have deformation function, etc., and achieve the effects of rich variety, effective control, and strong remote control.

Active Publication Date: 2022-08-02
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] With the in-depth research of 4D printing technology, 4D printing materials have gradually expanded to the field of high-strength and high-hardness ceramic materials, such as patents 201910501955.8, 201810852295.3, 201910156766.1, etc. These patents all use ceramic precursors (that is, a polymer) The high elasticity of the material realizes the deformation effect of the precursor in the additive manufacturing process, but the sintered ceramic part itself does not have the deformation function

Method used

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  • Ultrasonic responsive 4D printed porous ceramic part and preparation method thereof
  • Ultrasonic responsive 4D printed porous ceramic part and preparation method thereof
  • Ultrasonic responsive 4D printed porous ceramic part and preparation method thereof

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preparation example Construction

[0026] see figure 1 , figure 2 and Figure 5 , the preparation method of the ultrasonic-responsive 4D printing porous ceramic piece provided by the present invention mainly includes the following steps:

[0027] Step 1, preparation of ceramic powder material.

[0028] Specifically, single-phase or multi-phase uniformly mixed piezoelectric ceramic powder is selected as the raw material, wherein the piezoelectric ceramic powder is the main phase material. The piezoelectric ceramic powder is preferably one or more of zinc oxide, boron nitride, barium titanate, barium zirconate titanate, barium calcium zirconate titanate, potassium sodium metaniobate, potassium barium metaniobate, The addition amount is not less than 20 wt%, and the particle size of the powder is preferably 0.5-20 μm.

[0029] Step 2, porous structure design.

[0030] Specifically, three-dimensional modeling software is used to design a porous model with different pore structure characteristics, and the poro...

Embodiment 1

[0040] see image 3 , a preparation method of ultrasonic responsive 4D printing porous ceramic material, the specific steps are as follows:

[0041] (1) Select barium zirconate titanate powder with an average particle size of 0.5 μm as the raw material;

[0042] (2) Using 3D modeling software to design a 3D model of a uniform porous structure, the porosity is 60%, the pore size is 450 μm, and the pore connectivity rate is 57.5%;

[0043] (3) uniformly mixing 47.5vol% ceramic powder with 52.5vol% photocurable resin monomer, 1.25wt% photoinitiator, 2.75wt% dispersant, etc. to obtain slurry;

[0044] (4) 4D printing of ceramic parts: import the porous model, light-cured the printing paste to obtain a green body, and sintered the green body at a DC voltage of 3500V / m and polarized at 65 °C for 17.5 minutes, and finally obtained an ultrasonic-responsive 4D printed ceramic part.

Embodiment 2

[0046] see Figure 4 , a preparation method of ultrasonic responsive 4D printing porous ceramic material, the specific steps are as follows:

[0047](1) Select barium calcium zirconate titanate / hydroxyapatite powder with an average particle size of 10 μm as the raw material, wherein the content of barium calcium zirconate titanate powder is 60wt%;

[0048] (2) A three-dimensional model of a uniform porous structure was designed by using three-dimensional modeling software, with a porosity of 90%, a pore size of 200 μm, and a pore connectivity rate of 20%;

[0049] (3) uniformly mixing 60vol% ceramic powder with 40vol% photocurable resin monomer, 2.0wt% photoinitiator, 5.0wt% dispersant, etc. to obtain slurry;

[0050] (4) 4D printing of ceramic parts: import the porous model, light-cured the printing paste to obtain a green body, and sintered the green body at a DC voltage of 2000 V / m and polarized at 20 °C for 5 minutes, and finally obtained an ultrasonic response 4D printed...

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Abstract

The invention belongs to the technical field of 4D printing, and discloses an ultrasonic-responsive 4D printing porous ceramic piece and a preparation method thereof. The method comprises the following steps: using a photocurable material as a raw material, and using a 4D printing technology to prepare a porous ceramic piece ; Wherein, the composition raw material of the photocurable material includes piezoelectric ceramic powder; the porous ceramic piece is a porous structure with different pore structure characteristics, and the porous ceramic piece is mechanically stimulated by ultrasonic means to deform and generate internal source electric field. The invention is based on the piezoelectric effect principle of piezoelectric ceramics, adopts an additive manufacturing process to prepare piezoelectric porous ceramics with different pore structure characteristics, and uses ultrasonic means to provide mechanical stimulation to deform the porous ceramics to generate an endogenous electric field , by adjusting the ultrasonic load of different pore structure characteristics to achieve controllable electrical signal output, that is, ceramic 4D printing with controllable changes in performance and function through material and structural design.

Description

technical field [0001] The invention belongs to the technical field of 4D printing, and more particularly, relates to an ultrasonic-responsive 4D printing porous ceramic piece and a preparation method thereof. Background technique [0002] 4D printing belongs to additive manufacturing technology, which uses additive manufacturing technology to prepare smart components through active design of materials and structures. Intelligent components prepared by 4D printing technology can realize controllable changes in shape, performance and function in time and space dimensions, and meet the application requirements of deformation, performance and function. Under the guidance of this concept, a large number of 4D printing related patents have emerged in recent years, such as patents 201711230043.9, 201910080768.7, 201910080768.7, etc. The 4D printing materials of these patents mostly focus on polymer materials and metal materials, and the 4D printing parts mostly focus on the shape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/583C04B35/495C04B35/49C04B35/468C04B35/453B33Y70/10B33Y10/00B28B1/00
CPCC04B38/0048C04B35/453C04B35/583C04B35/468C04B35/49C04B35/495B28B1/001B33Y10/00B33Y70/10C04B2235/6026C04B2235/5436
Inventor 闫春泽张海波陈安南王长顺李昭青史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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