Macromolecular solution dispersing medium with complete combustion and volatilization for dispensing organic powder
A technology of polymer solution and dispersion medium, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of no evaluation of printing suitability, difficulty in stabilizing silver paste, etc., and achieve good uniform dispersion stability, The effect of eliminating influence
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Embodiment 1
[0010] A transparent dielectric paste for making a front substrate of a plasma display. The front substrate of the plasma display needs to make a layer of visible light transparent glass layer with a thickness of 10-20 microns.
[0011] Grind the dielectric glass powder that meets the requirements to an average particle size of 3 microns and a maximum particle size of less than 10 microns.
[0012] The nitrocellulose with a mass percentage of 5% was dissolved in ethyl acetate or a mixed solvent of ethyl acetate, butyl carbitol, and dibutyl phthalate (mass ratio: 50:25:25). Add 2% organic silicon block copolymer hyperdispersant and 2% defoamer to prepare a uniform solution, which is the dispersion medium referred to in the present invention. The medium glass powder with a mass fraction of 75% is uniformly dispersed in the dispersion medium with a mass fraction of 25%, and is uniformly dispersed with a three-roll mill to prepare a medium slurry. The rheology of the slurry is a...
Embodiment 2
[0016] Making nano-silver conductive paste.
[0017] Inorganic powder is silver powder with a maximum particle size of less than 100 nanometers and an average particle size of 60 nanometers.
[0018] The nitrocellulose with a mass percentage of 5% was dissolved in ethyl acetate or a mixed solvent of ethyl acetate, butyl carbitol acetate, and dimethyl phthalate (mass ratio: 50:25:25). Add 6% of organic silicon block copolymer hyperdispersant and 2% of defoamer to prepare a uniform solution, which is the dispersion medium referred to in the present invention. Nano-silver powder with a mass fraction of 75% is uniformly dispersed in a dispersion medium with a mass fraction of 25%, and is uniformly dispersed with a three-roll mill to prepare a nano-silver conductive paste. The rheology of the slurry is a typical shear thinning body, and it has good screen printing suitability. Screen-print the slurry onto a single crystal silicon substrate with a gold-plated layer on the surface,...
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