BONDING MATERIAL AND BONDED OBJECT PRODUCED USING SAME

摘要

Bonding materials which contain silver nanoparticles considerably change in coating-material property in response to a slight change in composition, and the stability thereof has been insufficient for large-amount application. The present invention provides a bonding material which contains silver nanoparticles and which meets the requirements for mass printing, attains dimensional stability, and gives a smooth printed surface. The bonding material comprises silver nanoparticles which have an average primary-particle diameter of 1-200 nm and have been coated with an organic substance having 8 or less carbon atoms, a dispersion medium, and a viscosity modifier constituted of an organic substance. The bonding material has a viscosity (measured at a shear rate of 15.7 [1/s]) of 100 Pa/s or lower and a thixotropic ratio ((viscosity measured at a shear rate of 3.1 [1/s])/(viscosity measured at a shear rate of 15.7 [1/s])) of 4 or lower.