Unlock instant, AI-driven research and patent intelligence for your innovation.

Zirconia ink for 3d direct writing

A technology of zirconia and zirconia particles, applied in the field of 3D printing materials, can solve the problems of low molding precision, ink not suitable for 3D direct writing ink, and small fine parts, etc., and achieve good elastic properties and strength

Active Publication Date: 2021-06-25
CENT SOUTH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical examples of 3D printing manufacturing technology include photocuring molding, selective laser sintering molding, and layered solid molding, etc., but there are disadvantages such as low molding accuracy, complicated follow-up processing, and low molding strength, which are not suitable for the preparation of small fine parts.
The raw material preparation process of this method is simple, fast and convenient, but it needs to be frozen in the 3D printing process, and the cost is very high
In addition, Publication No. 104877463 discloses a zirconia ceramic ink for 3D inkjet printing and its preparation method; however, the ink is used for 3D inkjet printing after all, and the solid content requirement is not high, nor can it be used in 3D direct writing state. In this way, the ink can be effectively cured and formed. The ink obtained according to this scheme does not meet the requirements of 3D direct writing ink at all.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zirconia ink for 3d direct writing
  • Zirconia ink for 3d direct writing
  • Zirconia ink for 3d direct writing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Zirconia particles (particle size D 50 =0.8um), deionized water, cellulose, polyvinyl acid, and polyacetylimide are mixed to form a slurry; the solid phase content of zirconia is 56%, the cellulose content is 0.002g / ml, and the polyethylene carboxylic acid is the dry powder content The ratio of polyvinyl acid to polyacetimide is 2:1. The above materials are mixed in proportion and then placed on a ball mill for 12 hours at a speed of 90rmp to obtain zirconia ceramic ink. The zirconia ceramic ink Has very good shear thinning, its 10s ‐1 The viscosity at the shear rate is 2Pa·s, and it has very good viscoelasticity, and its elastic modulus at 200pa is as high as 10 5 Pa, has good shape retention, can pass through the needle nozzle blockage smoothly and maintain a three-dimensional shape, then put the ink into the spray barrel of the 3D direct writing device, the nozzle diameter is 100um, set the program of the 3D direct writing device, and start The three-dimensional st...

Embodiment 2

[0045] Mix 1 μm zirconia particles, deionized water, hydantoin epoxy resin, polyacrylic acid, and polyethylene oxide to form a slurry; in the slurry: zirconia solid phase content ranges from 45vol% to 15wt% hydantoin epoxy resin , polyacrylic acid is 0.8% of the dry powder content, and the ratio of polyacrylic acid to polyethylene oxide is 0.5:1. After mixing the above materials in proportion, put them on a ball mill at a speed of 100-140rmp for 12-24h, remove them, and ultrasonically After oscillating for 1‐12 hours, the 3D direct writing zirconia ceramic ink is obtained. The zirconia ceramic ink has very good shear thinning property, and its ‐1 The viscosity at the shear rate is 10Pa·s, and it has very good viscoelasticity, and its elastic modulus at 11pa is as high as 10 4 Pa, has good shape retention, can smoothly pass through the needle nozzle blockage and maintain a three-dimensional shape.

[0046] The 3D direct writing zirconia ceramic ink is loaded into the spray ba...

Embodiment 3

[0048] Mix 0.5μm zirconia particles, deionized water, gum arabic, sodium polyacrylate, and polypropyleneimine, the solid phase content of zirconia is 40vol%, the gum arabic content is 0.05g / ml, and sodium polyacrylate is the dry powder content 1%, the ratio of sodium polyacrylate to polypropyleneimine is 2:1, mix the above materials in proportion and put them on a ball mill at a speed of 100-140rmp for 12-24h, remove them, and ultrasonically oscillate for 1-12h Get 3D direct writing zirconia ceramic ink. The zirconia ceramic ink has very good shear thinning property, and its ‐1 The viscosity at the shear rate is 3Pa·s, and has very good viscoelasticity, and its elastic modulus at 10pa is as high as 10 3 Pa, has good shape retention, can smoothly pass through the needle nozzle blockage and maintain a three-dimensional shape.

[0049] The 3D direct writing zirconia ceramic ink is loaded into the spray barrel of the 3D direct writing device, the nozzle diameter is 10um, the pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

A 3D direct writing zirconia ink, the raw materials include zirconia particles, solvent, binder and polyelectrolyte; the particle size range of the zirconia particles is 0.1-2μm, and the solid phase content range in the zirconia ink It is 40-58vol%; the polyelectrolyte is composed of polycation polyelectrolyte and polyanion polyelectrolyte; wherein, the amount of polyanion electrolyte is 0.1-1.5% of the dry powder mass of zirconia particles, and the The charge ratio of polyanionic polyelectrolyte and polycationic polyelectrolyte is (0.1‐4):1. The zirconia ink for 3D direct writing molding of the present invention can be printed at room temperature, has a relatively high solid content and can still flow out from fine nozzles without clogging, and can quickly solidify into a certain strength The filaments are used in a variety of styling and have good rheological properties.

Description

technical field [0001] The invention relates to a zirconia ceramic ink for 3D direct writing, which belongs to the field of 3D printing materials. Background technique [0002] Modern micro-processing technology has incomparable advantages over traditional processing methods at the micro-nano scale. Microprocessing technology includes soft etching technology, laser ablation technology, stereolithography technology, two-photon polymerization technology, electrostatic discharge technology and 3D direct writing technology, etc. Among them, 3D direct writing technology (three dimensional direct‐writing), also known as direct writing assembly technology (Direct‐writing Assembly), is a branch of 3D printing technology. Typical examples of 3D printing manufacturing technology include photocuring molding, selective laser sintering molding, and layered solid molding, etc., but there are disadvantages such as low molding accuracy, complicated follow-up processing, and low molding str...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/634
CPCB33Y10/00B33Y70/00C04B35/48C04B35/634C04B35/63404C04B35/63424C04B35/63444C04B35/63448C04B35/63488C04B2235/5436C04B2235/5445
Inventor 张斗廖晶晶陈何昊周科朝
Owner CENT SOUTH UNIV