Abstract:

The anionic surfactant 1227 was first used to the preparation of sodium base betontte. The prepared 1227-ben was given further determination by FT-IR and used as subsidence-resistance for preparing 4% nicosulfuron oil-suspension. The effect of 1227-ben on the physical property of oil-suspension was examined eventually. FT-IR spectra showed that the organic agents had intercalated into the layer of montmorillonite. Subsidence-resistance test showed that the increase in 1227-Ben dosage could decrease oil separation rate and improve the viscidity and yield value and suspension rate of oil-suspension, that is, 1227-ben could be used as subsidence-resistance for the preparation of 4% nicosulfuron oil-suspension.

Key words: Organicallymodified bentonite,nicosulfuron oil-suspension,rheological characteristics,physical stability