Conductive composition, conductive paste, electronic component, and laminated ceramic capacitor
A technology of conductivity and composition, which is applied in the field of laminated ceramic capacitors, can solve the problems of high surface activity of conductive powder, large particle surface specific surface area, and low viscosity characteristics, and achieve excellent printability, uniform width and thickness. , the effect of high dry film density
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Embodiment 1
[0109] Based on 100 parts by mass of conductive powder (Ni powder), 50 parts by mass of an organic vehicle containing a binder resin made of EC resin and PVB resin in a ratio of 2:1, as the first acidic dispersant 0.5 parts by mass of the acid-based dispersant A and 1 part by mass of the acid-based dispersant C as the second acid-based dispersant were mixed, and an organic solvent was added so that the above-mentioned mixed material became 85.5 mass %. Conductive paste for evaluation. Table 1 shows the types of dispersants used in the conductive paste.
[0110] Moreover, using the obtained electroconductive paste, the dry film was produced by the method described in the said evaluation method, and the dry film density and the surface roughness of a dry film were evaluated by the said method. Table 1 shows the evaluation results.
Embodiment 2～13
[0112] Except having used the combination of the kind and content as described in Table 1 as a dispersant, the electroconductive paste was produced on the conditions similar to Example 1. The dried film density of the dried film produced using this conductive paste and the surface roughness of the dried film were evaluated by the above-mentioned method. The evaluation results are shown in Table 1 together with the type and content of the acid-based dispersant used.
reference example 1～3
[0114] Except having used the combination of the kind and content as described in Table 1 as a dispersant, the electroconductive paste was produced on the conditions similar to Example 1. The dried film density of the dried film produced using this conductive paste and the surface roughness of the dried film were evaluated by the above-mentioned method. The evaluation results are shown in Table 1 together with the type and content of the acid-based dispersant used.
[0115] Table 1
[0116]
[0117] (Evaluation results)
[0118] From the results in Table 1, it was confirmed that in the conductive paste containing the first acid-based dispersant and the second acid-based dispersant in Example 1 and Examples 4 to 13, the content of the first acid-based dispersant was equal to that of the first acid-based dispersant , and the conductive paste of Reference Example 1 that does not contain the second acid-based dispersant, the dry film density is higher, and the surface roughne...
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Abstract
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