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Magnetic ink and preparation method for ink-jet printing flexible electromagnetic wave absorption film

A magnetic ink and nano-magnetic technology, applied in ink, household utensils, applications, etc., can solve the problems of unfavorable large-scale production, complicated process, high cost, etc., and achieve the effect of clear graphic boundaries, high graphic precision and uniform distribution

Inactive Publication Date: 2011-11-02
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, methods for preparing electromagnetic wave absorbing and shielding flexible films include magnetron sputtering, vapor phase chemical deposition, etc., but their processes are complex, costly, and time-consuming, which is not conducive to large-scale production

Method used

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  • Magnetic ink and preparation method for ink-jet printing flexible electromagnetic wave absorption film
  • Magnetic ink and preparation method for ink-jet printing flexible electromagnetic wave absorption film
  • Magnetic ink and preparation method for ink-jet printing flexible electromagnetic wave absorption film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0036] Magnetic ink consists of the following components:

[0037] A solvent composed of ethanol: isopropanol: deionized water = A: B: C in volume ratio, wherein 1≤A≤4, 1≤B≤3, 6≤C≤12;

[0038] The solute is nano magnetic particles, dispersant, linking agent, surfactant, wetting agent and defoamer,

[0039] Calculated by mass ratio, magnetic nanoparticle: dispersant = x: y, where 4≤x≤25, 1≤y≤3; solvent: linking agent: surfactant: wetting agent: defoaming agent = a: b: c:d:e, where 86.95≤a≤99.199, 0.3≤b≤5, 0.5≤c≤5, 0≤d≤3, 0.001≤e≤0.05;

[0040] The mass-to-volume ratio of the nano-magnetic particles to the solvent is 0.002-0.02 g / ml;

[0041] The dispersing agent is sodium dodecylbenzene sulfonate, sodium oleate or sodium hexametaphosphate, the linking agent is water-based acrylic resin or water-based polyurethane, and the surfactant is polyethylene glycol or alkylphenol polymer. Oxyethylene ether, the wetting agent is ethylene glycol or sorbitan, and the defoamer is cetyl al...

Embodiment 1

[0043] Calculated by mass percentage, the components are:

[0044]Ethanol: 15.78%, isopropanol: 7.9%, deionized water: 68.35%, nano-magnetic particles: 0.6%, dispersant 0.17%; linking agent: 3%; surfactant: 1.15%; wetting agent: 3% ; Defoamer: 0.05%. The mass-to-volume ratio of the magnetic nanoparticle to the solvent is 0.006 g / ml;

[0045] The dispersant is sodium dodecylbenzene sulfonate, the linking agent is water-based acrylic resin, the surfactant is polyethylene glycol, the wetting agent is ethylene glycol, and the defoamer is cetyl alcohol.

Embodiment 2

[0047] Calculated by mass percentage, the components are:

[0048] Ethanol: 11.84%, isopropanol: 12.36%, deionized water: 66.34%, nano-magnetic particles: 1.81%, dispersant 0.45%; linking agent: 3%; surfactant: 1.15%; wetting agent: 3% ; Defoamer: 0.05%. The mass-to-volume ratio of the magnetic nanoparticle to the solvent is 0.02 g / ml;

[0049] The dispersant is sodium oleate, the linking agent is water-based polyurethane, the surfactant is alkylphenol polyoxyethylene ether, the wetting agent is sorbitan, and the defoamer is polyether Modified silicone.

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Abstract

The invention discloses magnetic ink, and relates to an electronic material technology. The magnetic ink comprises a solvent and a solute, wherein the solvent consists of ethanol, isopropanol and deionized water in a volume ratio of A: B: C, wherein A is more than or equal to 1 and less than or equal to 4, B is more than or equal to 1 and less than or equal to 3, and C is more than or equal to 6 and less than or equal to 12; the solute comprises nano magnetic granules, dispersant, connecting agent, surfactant, wetting agent and defoaming agent; the mass ratio of the nano magnetic granules to the dispersant is x: y, wherein x is more than or equal to 4 and less than or equal to 25, and y is more than or equal to 1 and less than or equal to 3; the ratio of the solvent: the connecting agent: the surfactant: the wetting agent: the defoaming agent is a: b: c: d: e, wherein a is more than or equal to 86.95 and less than or equal to 99.199, b is more than or equal to 0.3 and less than or equal to 5, c is more than or equal to 0.5 and less than or equal to 5, d is more than or equal to 0 and less than or equal to 3, and e is more than or equal to 0.001 and less than or equal to 0.05; and the ratio of the mass of the nano magnetic granules to the volume of the solvent is 0.002 to 0.02 gram per milliliter. The method realizes low-cost production of the large-area electromagnetic wave absorption film and preparation of flexible wave absorption films with high output graph precision, clear graph boundary, uniform distribution and various complex components and images.

Description

technical field [0001] The invention belongs to the technical field of electronic materials. Background technique [0002] After entering the information society, human beings use more and more electrical equipment in production and life, and this trend will continue, so the electromagnetic environmental pollution caused by electromagnetic fields in the living environment is also becoming stronger and stronger. Countries all over the world are paying more and more attention to the research of electromagnetic wave shielding and absorbing materials. Many domestic units have devoted themselves to this research and have achieved initial results. At present, the main measures to control electromagnetic wave pollution are: absorbing, filtering, countering and shielding. There are two types of flexible materials for absorbing and shielding electromagnetic waves: absorbing and reflecting. And this kind of flexible composite material that absorbs and reflects electromagnetic waves ...

Claims

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Application Information

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IPC IPC(8): C09D11/10C09D11/38
Inventor 韩满贵蔡黎邓龙江
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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