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A light-curing 3D printing device and printing method suitable for space environment

A 3D printing and light-curing technology, applied in the field of 3D printing, can solve the problems of high viscosity ink, sacrifice of printing efficiency and printing time, and difficulty in printing, etc., and achieve the effect of overcoming the requirement of high viscosity

Active Publication Date: 2021-08-31
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high viscosity ink is very viscous, it is difficult to print, and it needs a lot of jetting force to jet, which will sacrifice printing efficiency and printing time

Method used

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  • A light-curing 3D printing device and printing method suitable for space environment
  • A light-curing 3D printing device and printing method suitable for space environment
  • A light-curing 3D printing device and printing method suitable for space environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 3

[0067] Example 1 Space printing of three-dimensional in vitro tumor models

[0068] This embodiment proposes a space printing method for a three-dimensional in vitro tumor model, which includes the following steps:

[0069] l Preparation of photosensitive bioink

[0070] A certain amount of gelatin-methacrylic acid (GelMA) powder (self-made) was dissolved in physiological saline, heated at 70°C for 3 hours until the GelMA powder was completely dissolved, and a 0.05 g / ml GelMA solution was prepared. Then add 0.005g / ml of photoinitiator (I2959, 2-hydroxy-4-(2-hydroxyethoxy)-2-methyl propiophenone, 106797-53-9, Yingli, China) powder dissolved in 0.1 g / ml GelMA solution to make GelMA bioink.

[0071] The lung tumor cells (A549) to be printed were digested, counted, centrifuged, and resuspended with GelMA bioink to obtain 4*10 6 / ml of cell-containing GelMA bioink.

[0072] l Printing and crosslinking

[0073] Perform plasma cleaning and hydrophilic treatment on the forming bo...

Embodiment 2

[0074] Embodiment 2 The space printing of the three-dimensional solid model that adopts another kind of photosensitive ink

[0075] Compared with Embodiment 1, this embodiment differs in that the composition of the photosensitive ink in this embodiment is different. specific,

[0076] l Preparation of bio-ink

[0077]Dissolve a certain mass of poly(ethylene glycol) diacrylate (PEGDA, manufacturer Sigma, molecular weight 700) powder in deionized water, the mass-volume ratio of poly(ethylene glycol) diacrylate is 20% (can be in the range of 5- 30% range for selection) to make 0.2g / ml PEGDA solution. Then add 0.005g / ml of photoinitiator (I2959, 2-hydroxy-4-(2-hydroxyethoxy)-2-methyl propiophenone, 106797-53-9, Yingli, China) powder dissolved in 0.1 g / ml PEGDA solution to make PEGDA photosensitive ink.

[0078] l Printing and crosslinking

[0079] Add the photosensitive ink obtained in the above steps into the forming chamber, and install and connect each structural unit of t...

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Abstract

Embodiments of the present invention relate to a light-curing 3D printing device and printing method suitable for a space environment. The 3D printing device includes a driving component, a connecting piece, a forming base plate, a forming chamber and a light pattern generating device, and the forming chamber includes a forming chamber. The shell and the forming chamber door, the forming chamber door is openably connected to the opening of the forming chamber shell, and can be enclosed with the forming chamber shell to form the accommodation space of the forming chamber, and the forming chamber door is made of transparent material; The forming base plate is arranged in the accommodation space of the forming chamber, and the forming surface of the forming base plate is opposite to the inner surface of the forming chamber door; the driving part drives the forming base plate close to or away from the forming chamber door through the connecting piece; the light The pattern generating device is arranged outside the forming chamber opposite to the forming chamber door. The embodiment of the present invention overcomes the requirement of high viscosity of printing ink in a weightless environment by designing a closed forming chamber, so that many photosensitive inks commonly used on the earth can also be used in space.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a light-curing 3D printing device and a printing method suitable for a space environment. Background technique [0002] With the advent of the 21st century, the pace of human exploration of space is gradually accelerating, but the cost of sending parts to space is extremely expensive. If you can use a 3D printer to print the required parts or items in the space station or spacecraft according to the needs of subsequent use, it will effectively reduce the cost of space experiments and maintenance. [0003] However, the space environment is different from that of the earth. Due to the influence of the weightless environment in space, it is difficult for the traditional light-curing 3D printing method to accurately print the original design shape in space, and there will be problems such as poor adhesion of printing ink, layer peeling or falling off. In particular, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/124B29C64/20B33Y10/00B33Y30/00B33Y70/10
CPCB29K2089/00B33Y10/00B33Y30/00B33Y70/00B29C64/124B29C64/20
Inventor 赵雨孙伟徐圆圆
Owner TSINGHUA UNIV
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