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High-throughput screening method of strong thixotropic ink

A screening method and thixotropy technology, which is applied in the direction of material inspection products, instruments, and analytical materials, etc., can solve the problems of ink supply interruption and inability to simulate ink high shear conditions, etc., and achieve small sample volume, short test time, convenient and continuous The effect of ink supply

Active Publication Date: 2021-07-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) Ink characteristics: Strong thixotropic ink has strong thixotropy, that is, it has high viscosity under low shear conditions and low viscosity under high shear conditions. The traditional high flux method cannot simulate the high shear during ink jetting. All conditions;
[0010] (2) Instruments and equipment: The traditional piezoelectric inkjet printer can directly express the printing suitability and settlement stability of the ink under jetting conditions, but the use of general piezoelectric inkjet printers to print strong thixotropic inks is easy to cause Ink out

Method used

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  • High-throughput screening method of strong thixotropic ink
  • High-throughput screening method of strong thixotropic ink
  • High-throughput screening method of strong thixotropic ink

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A kind of high throughput screening method of Bi strong thixotropic ink (solid content 10vol%), comprises the following steps:

[0045] (1) adjust the composition of strong thixotropic ink, prepare a series of strong thixotropic ink, this series of strong thixotropic ink is made up of Bi powder, BYK-420 and solvent, and solvent adopts the mixture of dehydrated alcohol and ethylene glycol;

[0046] Specifically, the solid content of this series of strong thixotropic inks is 10vol% based on the volume percentage of the single powder Bi powder in the ink, the volume percentage of the additive BYK-420 in the ink is 2.5vol%, and the balance is solvent. The difference in the composition of this series of strong thixotropic inks lies in the different proportions of ethylene glycol in the total volume of the solvent. The specific composition is shown in Table 1. The preparation process of ink is as follows: 1. Weighing powder: take Bi powder (purity 99.9%, 1000 mesh) in glove b...

Embodiment 2

[0060] A kind of high throughput screening method of Bi strong thixotropic ink (solid content 2~20vol%), comprises the following steps:

[0061] (1) adjust the composition of strong thixotropic ink, prepare a series of strong thixotropic ink, this series of strong thixotropic ink is made up of Bi powder, BYK-420 and solvent, and solvent adopts the mixture of dehydrated alcohol and ethylene glycol;

[0062] Specifically, the series of strong thixotropic ink additive BYK-420 accounts for 2.5vol% of the ink, and the balance is Bi powder and solvent. The difference in the composition of this series of strong thixotropic inks is that the volume percentage of the single powder Bi powder in the ink and the proportion of ethylene glycol in the total volume of the solvent are different. The specific composition is shown in Table 2. The preparation process of ink is as follows: 1. Weighing powder: take Bi powder (purity 99.9%, 1000 mesh) in glove box; 2. Prepare solvent: measure absolut...

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Abstract

The invention discloses a high-throughput screening method of strong thixotropic ink. A non-contact ink-jet dispensing machine is used for jetting a series of inks with different compositions through a large-range process parameter dispensing process to obtain a corresponding ink single-point sample library, and then the ink printing adaptability and sedimentation stability are judged according to the morphology of the single-point sample library and the printing state of the dispensing machine, so that the purpose of performing high-throughput screening on the strong thixotropic ink is achieved. The screening process is simple, only the non-contact dispensing machine needs to be used, a large amount of strong thixotropic ink with different compositions can be screened in a short time, the optimal interval of the composition of the strong thixotropic ink is obtained, and compared with traditional rheology, surface tension and sedimentation testing methods, the method has the advantages of being short in testing time, small in needed sample amount, capable of directly representing the performance of the ink under a high-shear condition during injection.

Description

technical field [0001] The invention belongs to the technical field of inkjet printing and material genome, and in particular relates to a high-throughput screening method of strong thixotropic ink. Background technique [0002] Inkjet-based 3D printing technology is one of the most promising additive manufacturing technologies, not only used in traditional structural materials, but also increasingly used to develop functional materials, such as inductive RFID tags, photovoltaic solar cells, OLED Display devices, thermoelectric materials, etc. However, the development of new inks has been relatively slow, restricting the widespread application of inkjet-based 3D printing technology. [0003] The long development cycle of inkjet printing ink is mainly due to the following two reasons: on the one hand, there are many parameters to be adjusted in the composition of the ink, so the number of samples to be tested is large; on the other hand, the traditional test method requires ...

Claims

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Application Information

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IPC IPC(8): G01N33/32G01N15/04
CPCG01N33/32G01N15/04
Inventor 唐新峰姚磊鄢永高杨东旺徐卓明邱俊豪谭晓鸣
Owner WUHAN UNIV OF TECH
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