COATED SILVER NANOPARTICLES AND MANUFACTURING METHOD THEREFOR

摘要

Provided is a conductive molding material, comprising coated silver nanoparticles, that can be sintered at a low temperature and used even on flexible printed substrates which have low heat-resistance. Also provided is a method for manufacturing said coated silver nanoparticles, which are coated in protective amine molecules, are no more than 30 nm in diameter, and are characterized by a loss in weight, upon thermogravimetric measurement, of at least 30% at 160°C. The coated silver nanoparticles are further characterized by forming a silver-colored sintered film upon sintering at a temperature of no more than 100°C for no more than 1 hour. The nanoparticles are prepared in the following way: alkylamine and alkyldiamine are mixed with a silver compound which breaks down and generates metallic silver upon heating; this forms a complex compound which is then heated, causing thermal decomposition of the silver compound.