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Preparation method for preparing microcosmic porous structure material through freeze curing 3D printing

A porous structure, 3D printing technology, applied in the field of 3D printing, can solve the problems of limited pore size and porosity accuracy, and achieve the effect of improving the mechanical properties of materials, the variety of raw materials, and the range of solid phase content.

Inactive Publication Date: 2022-07-15
JIHUA LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for preparing microscopic porous structure materials by freeze-solidification 3D printing, aiming at solving the problem of limited pore size and porosity precision of porous structure materials prepared by 3D printing

Method used

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  • Preparation method for preparing microcosmic porous structure material through freeze curing 3D printing
  • Preparation method for preparing microcosmic porous structure material through freeze curing 3D printing
  • Preparation method for preparing microcosmic porous structure material through freeze curing 3D printing

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preparation example Construction

[0032] The present invention provides a preparation method for preparing microscopic porous structure materials by freezing and solidifying 3D printing. figure 1 Schematic diagram of the 3D printing scene when preparing microscopic porous structure materials, such as figure 1 As shown, the preparation method includes: preparing a supporting material 10, placing the prepared supporting material 10 in a mold 20; preparing a target material into a target slurry 30 for extrusion printing; 20 is placed on the printing platform, and the target slurry is put into the barrel 40 of the printing device; according to the target design model, the target slurry 30 is extruded in the supporting material 10 through the nozzle of the printing device to obtain printing a model 50; freezing and solidifying the printing model 50 to obtain a target model; and post-processing the target model to obtain a microscopic porous structure material.

[0033] The main components of the support material a...

Embodiment 1

[0051] In this example, carbomer 940, hydroxyapatite (with a particle size of 0.2 μm), deionized water, hydroxypropyl methylcellulose, and Darvan CN were selected as raw materials, and sodium hydroxide solution (10 M). The volume fraction of hydroxyapatite was 40%, and the mass concentration of carbomer 940 was 1% w / v. 1) Preparation of support material Weigh 1 g of carbomer 940 powder, 100 mL of deionized water, and 0.1 mL of 10M sodium hydroxide. Add carbomer 940 powder to deionized water, stir well, and then gradually add 0.1 mL of 10M sodium hydroxide solution dropwise. After the carbomer gel is obtained, it is put into a centrifuge for defoaming, taken out and put into a plastic mold. 2) Preparation of target slurry Weigh 67 g of hydroxyapatite, 100 g of deionized water, and 0.2 g of hydroxypropyl methylcellulose. Add 0.2 g of hydroxypropyl methylcellulose to deionized water at 70°C, stir well, and then cool to room temperature. 1 g of Darvan CN and 67 g of hydroxyapat...

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Abstract

The invention discloses a preparation method for preparing a microcosmic porous structure material through freeze curing 3D printing, and relates to the technical field of 3D printing, the method comprises the following steps: preparing a support material, and placing the prepared support material in a mold; preparing the target material into target slurry for extrusion type printing; a mold containing a supporting material is placed on a printing platform, and the target slurry is placed in a charging barrel of a printing device; according to a target design model, the target slurry is extruded from the supporting material through a spray head of a printing device, and a printing model is obtained; freezing and solidifying the printing model to obtain a target model; and post-processing the target model to obtain the microscopic porous structure material. According to the preparation method, 3D printing and freeze curing forming are combined, and the microcosmic porous structure materials with different pore diameters and porosities are prepared by adjusting the component composition and the component concentration of the target slurry.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a preparation method for preparing microscopic porous structure materials by freeze-solidification 3D printing. Background technique [0002] With the advancement of medical technology in my country and the improvement of people's living standards, development research can repair or replace common diseases of the musculoskeletal system, including bone and joint degeneration, spinal trauma and degeneration, limb trauma, bone defects, bone Orthopedic implant devices for human body defects caused by porosity and bone tumors are of great significance. 3D printing methods such as Digital Light Processing (DLP, Digital Light Processing), Selective Laser Melting (SLM, Selective Laser Melting), Selective Laser Sintering (SLS, Selective Laser Sintering), Direct Ink Writing (DIW, Direct Ink Writing). It has the advantages of flexibility, the ability to prepare complex structural parts,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/386B29C64/40B29C64/379B28B1/00B28B17/00B33Y40/00B33Y50/00B33Y40/20
CPCB29C64/386B29C64/40B29C64/379B28B1/001B28B17/0063B28B17/00B33Y40/00B33Y50/00B33Y40/20
Inventor 王法衡伍言龙刘亚雄张清贤覃利娜石振明马广才李家振杨蒙蒙陈旭
Owner JIHUA LAB
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