Silver paste
A technology of silver paste and silver powder, applied in the direction of pigment paste, conductive material, metal/alloy conductor, etc., can solve the problem of easy migration, and achieve the effect of high filling rate and film density, and excellent printability
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Embodiment 1～11 and comparative example 1～11
[0098] Let the silver powder described in Table 1 be the content C described in Table 2 AG , taking ethyl cellulose as the content C recorded in Table 2 BND , and made the remainder into terpineol (TPO), and kneaded these to manufacture silver paste samples a to u.
[0099] Next, each silver paste sample a~u was coated on a PET film at 20 mm×20 mm×151 μm, and the PET film dried at 80° C. for 10 minutes was punched with a punch of 15 mmΦ, and further carried out at 150° C. for 1 hours of drying. Next, the mass W and volume V of the obtained dry film were measured respectively, and the dry film density was obtained by the formula of W / V. The results are shown in Table 2. It should be noted that the qualified benchmark for dry film density is 7.50g / cm 3 above.
[0100] Next, the silver paste sample is coated and printed on a ceramic substrate into a rectangular parallelepiped shape of 60 mm × 0.6 mm × 40 μm, and after being fired at 650 ° C in an oxidizing atmosphere (atmosp...
Embodiment 12～22、 comparative example 12～22
[0106] Using the above-obtained silver paste samples a to u, a rectangular parallelepiped pattern was formed by screen printing on a previously prepared magnetic layer with a film thickness of 30 μm, and a magnetic layer to compensate for the drop due to the thickness of the pattern was printed. Three sets of these were stacked as one set, and magnetic layers for covering were further stacked on the uppermost and lowermost portions. Next, after thermocompression bonding and degreasing treatment in an oxidative atmosphere, firing was performed at 650° C. to obtain a laminate.
[0107] Next, printability was evaluated using the obtained laminated body. Specifically, as Figure 4 The laminate was cut as shown, and the cross-sectional rectangularity of the conductor film was observed to measure Figure 4 The average value of the angles corresponding to θ in . The results are shown in Table 3. In addition, the pass standard of printability is 55 degrees or more, Preferably it i...
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Abstract
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