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Body manufacturing method based on powder slurry by utilizing radioactive rays

A manufacturing method and radiation technology, applied in the field of additive manufacturing, can solve the problems of poor penetration, low energy of visible light, short wavelength of radiation, etc., and achieve the effect of low shrinkage

Active Publication Date: 2020-07-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Visible light is mostly used in body manufacturing technology, which shows great advantages such as high performance, high efficiency and breaking through structural limitations in the molding of low-transparency materials such as resins. However, the low energy and poor penetration of visible light make it difficult to carry out deep molding of such materials
Although radiation has the characteristics of high energy and high penetration, radiation has become a potential choice for opaque powder slurry materials, but due to the extremely short wavelength of radiation, it is currently difficult to find a photoinitiator that matches it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, a body manufacturing method based on powder slurry and utilizing radiation, comprising the following steps:

[0028] 1) Calculate the radiation energy required for photocuring, and prepare powder slurry containing spectrum conversion particles. The powder slurry is prepared by mixing photocurable resin, spectrum conversion particles, photoinitiator, powder and dispersant;

[0029] Described photocurable resin is the mixture of triethylene glycol diacrylate and 1,4-butanediol diacrylate, and the volume ratio of triethylene glycol diacrylate and 1,4-butanediol diacrylate is 2:3;

[0030] The spectrum conversion particle is thallium-doped sodium iodide NaI (TI), the average particle diameter of the particle is about 5 microns, the true volume of the spectrum conversion particle is 2% of the volume of the photocurable resin, and the true volume of the spectrum conversion particle is its mass and its mass. ratio of true density;

[0031] The amount of the pho...

Embodiment 2

[0037] Embodiment 2, a body manufacturing method based on powder slurry and utilizing radiation, comprising the following steps:

[0038] 1) Calculate the radiation energy required for photocuring, and prepare powder slurry containing spectrum conversion particles. The powder slurry is prepared by mixing photocurable resin, spectrum conversion particles, photoinitiator, powder and dispersant;

[0039] The photocurable resin is a mixture of trimethylolpropane trimethacrylate and 1,6-hexanediol diacrylate, trimethylolpropane trimethacrylate and 1,6-hexanediol diacrylate The volume ratio of acrylate is 1:1;

[0040] The spectrum conversion particle is CsPbCl 3 and CsPbBr 3 mixture of CsPbCl 3 and CsPbBr 3 The mass ratio of the particles is 1:1, and the average particle diameter of the particles is about 200 nanometers; the true volume of the spectral conversion particles is 5% of the volume of the photocurable resin, and the true volume of the spectral conversion particles is...

Embodiment 3

[0047] Embodiment 3, a body manufacturing method based on powder slurry and utilizing radiation, comprising the following steps:

[0048] 1) Calculate the radiation energy required for photocuring, and prepare powder slurry containing spectrum conversion particles. The powder slurry is prepared by mixing photocurable resin, spectrum conversion particles, photoinitiator, powder and dispersant;

[0049] The photocurable resin is hydroxyethyl methacrylate;

[0050] The spectrum conversion particle is Gd 2 o 2 S: Tb, the average particle size of the particles is about 50 nanometers; the true volume of the spectral conversion particles is 4% of the volume of the photocurable resin, and the true volume of the spectral conversion particles is the ratio of its mass to its true density;

[0051] The amount of the photoinitiator is 3% of the mass of the photocurable resin, and the photoinitiator is 2,4,6-trimethylbenzoyl-diphenylphosphine oxide;

[0052] The powder is Al 2 o 3 and ...

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Abstract

The invention discloses a body manufacturing method based on powder slurry by utilizing radioactive rays. Firstly, radioactive ray energy needed by photo curing is calculated; the powder slurry containing spectral transformation particles is prepared; the powder slurry is obtained by mixing photo curing resin, the spectral transformation particles, photoinitiators, powders and dispersants; then the well-mixed powder slurry containing the spectral transformation particles is mixed by using a ball miller; finally the powder slurry containing the spectral transformation particles which is ball-milled is contained in a moulding tank; radioactive ray transmission array devices are distributed around the moulding tank, so that rays transmitted by the radioactive ray transmission array devices cover the zone of the moulding zone; the transmission strength of each radioactive ray array is adjusted dynamically according to shapes of parts; and the moulding tank is scanned, so that body manufacturing of the parts is performed. According to the method, high energy and transmission power of the radioactive rays are utilized for triggering the spectral transformation particles to emit ultraviolet light and visible light in the powder slurry which act on the photoinitiators to cause photo curing reaction; and therefore inner photo curing in opaque, high-solid-phase and high-density powder slurry is realized.

Description

technical field [0001] The present invention relates to the technical field of additive manufacturing, in particular to a method for bulk additive manufacturing (referred to as bulk manufacturing) based on powder slurry and utilizing radiation. Background technique [0002] Additive manufacturing technology based on powder slurry is widely used in the manufacture of complex structural parts in aerospace, defense, energy, environment, automobile and biomedicine and other fields. Especially in the fields of aerospace, defense and biomedicine, higher requirements are put forward for the personalization, refinement, lightweight and complexity of parts. [0003] Although traditional additive manufacturing methods based on powder slurry (powder sintering, dry molding, plastic molding, and grouting molding, etc.) have significant advantages such as high density, high strength, and small shrinkage, the traditional process is time-consuming and difficult to manufacture. complex stru...

Claims

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Application Information

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IPC IPC(8): B29C64/165B29C64/314B29C64/386B22F3/22B28B1/00B33Y10/00B33Y50/00B33Y40/10B33Y70/10
CPCB22F3/22B28B1/001B33Y10/00B33Y40/00B33Y50/00B33Y70/00B29C64/165B29C64/314B29C64/386
Inventor 刘亚雄陈旭伍言龙赵广宾李腾飞贺健康王玲李涤尘
Owner XI AN JIAOTONG UNIV