Non-ionic surface active agent modified direct-writing type 3D printing general ink and preparation and printing method of non-ionic surface active agent modified direct-writing type 3D printing general ink

A non-ionic surface and 3D printing technology, applied in the field of 3D printing materials, can solve problems such as uneven structure

Pending Publication Date: 2022-03-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inhomogeneity and defects in the structure of the printing ink prepared by this method will gradually accumulate in the subsequent printing, ligand removal and heat treatment processes; at the same time, for the ceramic powder required for the production of ceramic structures, its dissolution in water Sexuality also has certain limitations

Method used

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  • Non-ionic surface active agent modified direct-writing type 3D printing general ink and preparation and printing method of non-ionic surface active agent modified direct-writing type 3D printing general ink
  • Non-ionic surface active agent modified direct-writing type 3D printing general ink and preparation and printing method of non-ionic surface active agent modified direct-writing type 3D printing general ink
  • Non-ionic surface active agent modified direct-writing type 3D printing general ink and preparation and printing method of non-ionic surface active agent modified direct-writing type 3D printing general ink

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] Step 1: Prepare zinc oxide modified powder. Pre-dissolve 6g of polyvinylpyrrolidone (PVP) in 50mL of isopropanol, stir at room temperature until clear, then pour 20g of zinc oxide powder into the solution, and stir overnight. The resulting mixture was poured into a centrifuge tube and centrifuged at 6000r / min for 10min. The supernatant was discarded and the remaining mixture was washed 3 times with ethanol and acetone to remove unabsorbed material. The mixture was then transferred to a 60°C oven to dry overnight. The mixture powder after drying is ball-milled or manually ground, and then sieved (100 microns), and the finer zinc oxide modified powder of finally making particle is ready for use.

[0040] Step 2: Formulate the zinc oxide printable ink. Mix 6g of zinc oxide modified powder, 1.5mL of hydroxyethyl cellulose (HEC), 0.5mL of polyethyleneimine (PEI) and 2 drops of polyethylene glycol (PEG-400) and grind them with a mortar, grind until homogeneous.

[0041] ...

example 2

[0045] Step 1: Prepare zinc oxide modified powder. 7g of polyvinylpyrrolidone (PVP) was pre-dissolved in 50mL of isopropanol, stirred at room temperature until clear, then 25g of zinc oxide powder was poured into the solution, and stirred overnight. The resulting mixture was poured into a centrifuge tube and centrifuged at 6000r / min for 10min. The supernatant was discarded and the remaining mixture was washed 3 times with ethanol and acetone to remove unabsorbed material. The mixture was then transferred to a 60°C oven to dry overnight. The mixture powder after drying is ball-milled or manually ground, and then sieved (100 microns), and the finer zinc oxide modified powder of finally making particle is ready for use.

[0046] Step 2: Formulate the zinc oxide printable ink. Mix 7g of zinc oxide modified powder, 1.5mL of hydroxyethyl cellulose (HEC), 0.5mL of polyethyleneimine (PEI) and 2 drops of polyethylene glycol (PEG-400) and grind them with a mortar, grind until homoge...

example 3

[0051] Step 1: Prepare zinc oxide modified powder. Pre-dissolve 8g of polyvinylpyrrolidone (PVP) in 50mL of isopropanol, stir at room temperature until clear, then pour 20g of zinc oxide powder into the solution, and stir overnight. The resulting mixture was poured into a centrifuge tube and centrifuged at 6000r / min for 10min. The supernatant was discarded, and the remaining mixture was washed three times with ethanol and acetone to remove unabsorbed material. The mixture was then transferred to a 60°C oven to dry overnight. The mixture powder after drying is ball milled or manually ground, and then sieved (100 microns), and finally the zinc oxide modified powder with finer particles is prepared for use.

[0052] Step 2: Formulate the zinc oxide printable ink. Mix 8g of zinc oxide modified powder, 1.5mL of hydroxyethyl cellulose (HEC), 0.5mL of polyethyleneimine (PEI) and 3 drops of polyethylene glycol (PEG-400) and grind them with a mortar, grind until homogeneous.

[00...

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Abstract

The invention relates to non-ionic surface active agent modified direct-writing type 3D printing general ink and a preparation and printing method, polyvinylpyrrolidone is used for carrying out surface chemical modification on original powder, and meanwhile, hydroxyethyl cellulose, a small amount of polyethyleneimine and other flocculants are added to prepare printable ink. The polyvinylpyrrolidone has a long hydrocarbon chain structure with a hydrophobic terminal, so that the particle size and the dispersion form of the powder can be effectively controlled by adjusting the dosage and the molecular weight of the polyvinylpyrrolidone, and the non-uniformity and defect phenomena of structure shrinkage can be effectively relieved in the subsequent printing, ligand removal and heat treatment processes; and meanwhile, the initial powder is modified, so that the microstructure can be further adjusted more easily by changing degreasing conditions. Practice shows that the modification method has universality and can be expanded to single-material high-quality printing of various ceramic materials and multi-material printing application of a multi-layer structure.

Description

technical field [0001] The invention belongs to the technical field of 3D printing materials, and relates to a direct-writing 3D printing universal ink modified with a nonionic surfactant and a preparation and printing method. Background technique [0002] Most important when producing ceramic structures using direct-write 3D printing is the colloidal process. Currently, ink formulations based on hydrogels or organic solvents are gaining popularity due to their ease of use. Water-based inks offer great advantages in dispersing particles, either by simple pH adjustment or by electrostatic or steric stabilization, resulting in easy formation of stable hydrocolloidal suspensions at high solids content. Traditionally, the well-dispersed colloidal suspension has been further gelled by adding a binder / plasticizer, where the particles can interconnect to form an interconnected network within the medium. This approach involves five basic steps: (1) powder synthesis, (2) ink prepar...

Claims

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Application Information

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IPC IPC(8): C04B35/453C04B35/622C04B35/626B33Y10/00B33Y70/10C04B35/632C04B35/634C04B35/636
CPCC04B35/453C04B35/622C04B35/62605C04B35/63444C04B35/6365C04B35/63488C04B35/632B33Y10/00B33Y70/10C04B2235/6026C04B2235/5445
Inventor 徐茜李晨曹庆贺官操李岳濛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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