Study on preparation and stability of nanosized inorganic size additive

The nanosized inorganic size additive dispersions composed of TiO2 was prepared and its stability was also studied.The results showed that the dispersion way,kinds of disperse agent and content have great influences on the dispersion effect of nanoparticles,and the dispersion effect of organic and inorganic composed dispersant was superior to their single effects.The stability of nano TiO2 size system was the best when 12.90% of dispersant silica gel,0.1% of dispersant FSN-100 and 1.0% of dispersant H3204 was added and ground for 4 h.There was no delimination and the agglomeration of nanoparticles was a little.With the maturing and relaxating time of nano TiO2 dispersion increasing,the agglomeration of nanoparticles occurred and existed in the soft ag-glomeration form.With the help of mechanical dispersing,the agglomerated particles could dispersed again and resumed nanoparticles state.