I am trying to fix a wire on a steel plate as an electrode which is located in my solution (including NMP) ... I dont know if the silver paste would dissolve in my material
According to the the properties of NMP, it may dissolve the silver paste. But the question is whether it could dissolve the silver paste after sintering it at relatively high temperature of about 150 degree for prolonged time in air?. In this case it may be hard enough such that it would be becomes insoluble in NMP.
I would advice you to try to discover this property by your self. It is straight forward. For some technical data please see the link:http://ws.eastman.com/ProductCatalogApps/PageControllers/ProdDatasheet_PC.aspx?product=71103627