Copper conductive slurry and preparation method and application thereof
A technology of conductive paste and paste, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, conductive layers on insulating carriers, etc., can solve the problems of poor performance and high cost of electronic pastes, and achieve high conductivity, Ease of sintering and large contact area
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[0035] Example 1
[0036] Weigh ethylene glycol ethyl ether, diethylene glycol, 2.5g, 3.5g, 1g of glycerin into the beaker, then weigh 0.85g of PVP, 0.8g of ascorbic acid, and stir with a magnetic stirrer for 60 minutes to obtain a uniform solution. Weigh micron copper powder (The average particle size is 1μm, the polyhedron shape is nearly spherical structure) 35g, gradually added to the above solution and stirred, and finally a copper paste with a certain viscosity is obtained. The obtained copper slurry was mixed and dispersed on a three-roll mill for 10 minutes to obtain a uniform copper slurry.
[0037] The copper paste is printed on ordinary copy paper and PET film (Novele TM On IJ-220), the printed pattern is 1mm wide and 150mm long, baked in an oven at 100°C for 20 minutes, flash sintered using pulsed xenon lamps, pulse width 2ms, three pulses, sintering energy 8J / cm 2 , The test resistance of the paper-based sample is 2.5Ω, the equivalent square resistance is 16.6mΩ / □, ...
Example Embodiment
[0038] Example 2
[0039] Weigh ethylene glycol ether, diethylene glycol, 2.5g, 3.5g, 1g of glycerin into the beaker, then weigh 0.8g PVP, 1.0g ascorbic acid, stir with a magnetic stirrer for 60 minutes to obtain a uniform solution, weigh micron copper powder (Average particle size 1μm, polyhedral shape is nearly spherical structure) 38g, nano copper powder (average particle size 80nm) 2g, after premixing, gradually add to the above solution and stir, and finally obtain a copper slurry with a certain viscosity. The obtained copper slurry was mixed and dispersed on a three-roll mill for 10 minutes to obtain a uniform copper slurry.
[0040] The copper paste is printed on ordinary copy paper and PET film (Novele TM On IJ-220), the printed pattern is 1mm wide and 150mm long, flash sintering with pulsed xenon lamp, pulse width 2ms, three pulses, sintering energy 7.5J / cm 2 , The test resistance of the paper-based sample is 3.2Ω, the equivalent square resistance is 21.3mΩ / □, and the t...
Example Embodiment
[0041] Example 3
[0042] Weigh ethylene glycol ether, diethylene glycol, glycerin 4.5g, 3.5g, 1.5g into the beaker, then weigh 1.2g PVP, 1.0g ascorbic acid, stir with a magnetic stirrer for 60 minutes to obtain a uniform solution, weigh micron copper 32g powder (average particle size 1μm, polyhedral shape nearly spherical structure), 8g nano-copper powder (average particle size 80nm), premixed and gradually added to the above solution and stirred to finally obtain a copper slurry with a certain viscosity. The obtained copper slurry was mixed and dispersed on a three-roll mill for 10 minutes to obtain a uniform copper slurry.
[0043] The copper paste is printed on ordinary copy paper and PET film (Novele TM On IJ-220), the printed pattern is 1mm wide and 150mm long, flash sintering with pulsed xenon lamp, pulse width 2ms, three pulses, sintering energy 6.8J / cm 2 , The test resistance of the paper-based sample is 3.3Ω, the equivalent square resistance is 22.0mΩ / □, and the test r...
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