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
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Example Embodiment
[0035] Implementation mode one
[0036] Magnetic ink includes the following components:
[0037] A solvent composed of a mixture of ethanol: isopropanol: deionized water = A: B: C by volume, where 1≤A≤4, 1≤B≤3, 6≤C≤12;
[0038] Solutes are nano-magnetic particles, dispersants, linkers, surfactants, wetting agents and defoamers,
[0039] Calculated by mass ratio, nano magnetic particles: dispersant = x: y, where 4≤x≤25, 1≤y≤3; solvent: linking agent: surfactant: wetting agent: defoamer = 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-volume ratio of the nano-magnetic particles to the solvent is 0.002~0.02 g / ml;
[0041] The dispersant 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 poly Oxyethylene ether, the wetting agent is ethylene glycol or sorbitol, and the defoaming agent is ...
Example Embodiment
[0042] Example 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-volume ratio of nano-magnetic particles to solvent is 0.006 g / ml;
[0045] The dispersing agent is sodium dodecylbenzene sulfonate, the linking agent is an aqueous acrylic resin, the surfactant is polyethylene glycol, the wetting agent is ethylene glycol, and the defoaming agent is Cetyl alcohol.
Example Embodiment
[0046] Example 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-volume ratio of nano-magnetic particles to solvent is 0.02 g / ml;
[0049] The dispersant is sodium oleate, the linking agent is aqueous polyurethane, the surfactant is alkylphenol polyoxyethylene ether, the wetting agent is sorbitol, and the defoaming agent is polyether Modified silicone.
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