Oleophobic Modification of Hollow Glass Microspheres and Its Effect on the Foaming Capacity and Stability of Foam Extinguishing Agent

Figure 2

Comparison of the contact angles of HGM modified by different concentrations of F8261 ((a) 0.1%, (b) 0.25%, (c) 0.75%, and (d) 1.0%).

(a)

(b)

(c)

(d)