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3D-Printing photo-curable slurry and preparation method thereof

A 3D printing and light-curing technology, applied in the field of 3D printing, can solve the problems of black light-curing system, such as hard curing and curing thickness, and achieve the effect of improving the ability of curing reaction

Active Publication Date: 2018-12-25
SHENZHEN SUNSHINE LASER & ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the black photocuring system is difficult to cure or the curing thickness is too small, the present invention proposes a 3D printing photocurable slurry and its preparation method

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  • 3D-Printing photo-curable slurry and preparation method thereof
  • 3D-Printing photo-curable slurry and preparation method thereof

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preparation example Construction

[0020] The preparation method of the 3D printing light-cured slurry provided in this embodiment, its process flow chart is as follows figure 1 shown, including:

[0021] S1. Material pretreatment: The black material, photoinitiator, dispersant, and solvent are fully mixed and then dried to obtain the pretreated material.

[0022] The black material in this embodiment mainly adopts the lithium iron phosphate powder that is used to form the electrode material, preferably the particle size of the lithium iron phosphate powder is 10-15 μ m, and the specific surface area (BET) is 8-15 m 2 / g, purity>99%.

[0023] Photoinitiator selects commercial photoinitiator 389 (2-dimethylamino-2-benzyl-1-(4-piperidine phenyl)-1-butanone), photoinitiator 184 (1-hydroxycyclohexylbenzene methyl ketone), photoinitiator EMK (4,4-bis(diethoxy)benzophenone), photoinitiator TPO (2,4,6-trimethylbenzoyl-diphenylphosphine oxide) , photoinitiator 819 (phenylbis(2,4,6-trimethylbenzoyl) phosphine oxide),...

Embodiment 1

[0038] Weigh 120g of lithium iron phosphate powder into a 1L corundum ball mill jar, pour about 120g of absolute ethanol, and add 3.6g of photoinitiator TPO and 1.2g of dispersant RQT-FS. Then start ball milling, the rotating speed is set at 170r / min, ball milling 3h. After completion, filter and dry to collect the pretreated lithium iron phosphate powder for use.

[0039] Pour 120 g of HDDA and 36 g of TMPTA into the beaker, and ultrasonically stir for 20 min to obtain a photosensitive resin mixture, which is ready for use.

[0040] Add 120g of photosensitive resin mixed solution, 2.4g of photoinitiator TPO and 2.4g of dispersant RQT-FS into the beaker, ultrasonicate for 30min, after forming a uniform and stable solution, transfer it to a 1L corundum ball mill jar. Then 120 g of pretreated lithium iron phosphate powder was weighed and added thereto, and ball milled at 170 r / min for 20 h. A black slurry was collected upon completion. The black paste is directly used for 3D pr...

Embodiment 2

[0042] Weigh 120g of lithium iron phosphate powder into a 1L corundum ball mill jar, pour about 120g of absolute ethanol, and add 1.2g of photoinitiator 389 and 3g of dispersant BYK111. Then start ball milling, the rotating speed is set at 250r / min, ball milling 4h. After completion, filter and dry to collect the pretreated lithium iron phosphate powder for use.

[0043] Pour 120g of DEGDMA and 60g of PET3A into the beaker, and ultrasonically stir for 20min to obtain a photosensitive resin mixture, which is ready for use.

[0044] Add 120g of photosensitive resin mixture, 1.2g of photoinitiator 389, and 1.2g of dispersant BYK111 into the beaker, and ultrasonicate for 20min. After forming a uniform and stable solution, transfer it to a 1L corundum ball mill jar. Then 21.6g of pretreated lithium iron phosphate powder was weighed and added thereto, and ball milled at 150r / min for 25h. A black slurry was collected upon completion. The black paste is directly used for 3D printin...

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Abstract

The invention discloses 3D-printing photo-curable slurry and a preparation method thereof. The preparation method includes S1, preparing materials, to be specific, fully mixing a black material, a photoinitiator, a dispersant and a solvent, and drying to obtain a pretreated material; S2, preparing a premixed liquid, to be specific, mixing photosensitive resin mixture, a photoinitiator and a dispersant to obtain the premixed liquid; S3, preparing slurry, to be specific, fully mixing the premixed liquid and the pretreated material to obtain the slurry. The black material is mixed with the photoinitiator, the dispersant the solvent to be pretreated before the slurry is prepared; the ability of the slurry to cure in ultraviolet irradiation can be greatly improved, the curing thickness of a single layer may reach 180 mu m and above, and printing forming is achieved.

Description

technical field [0001] The invention relates to 3D printing technology, in particular to a 3D printing light-cured paste and a preparation method thereof. Background technique [0002] As a hot research topic nowadays, 3D printing technology has attracted wide attention from all walks of life. More and more researchers from countries and enterprises have devoted themselves to this industry, making 3D printing technology gain a rapid development in recent years. develop. At present, ceramic 3D printing technologies mainly include inkjet printing (Ink-jet printing, IJP), fused deposition modeling (Fused deposition modeling, FDM), stereolithography (Stereo lithography, SLA), layered entity manufacturing technology (Laminated object manufacturing, LOM) and laser selective sintering technology (Selectivelaser sintering, SLS), these technologies can be classified according to different standards. Among them, the SLA technology based on the principle of light-curing molding has b...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F222/20C08F2/48C08K3/32B33Y70/00
CPCC08F2/48C08F222/1006C08K3/32B33Y70/00C08K2003/321C08F222/103C08F222/102C08F222/104
Inventor 肖坦邹倩陆青肖华军牛文明江涛马建立
Owner SHENZHEN SUNSHINE LASER & ELECTRONICS TECH CO LTD
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