Parameters of STF.
| STF | Dispersing phase (SiO2) | Dispersing medium | Additive mass fraction (%) | |
|---|---|---|---|---|
| Type | Concentration (wt%) | |||
| STF1 | 12 nm | 20 | PEG 200 | 0 |
| STF2 | 200–300 nm | 20 | PEG 200 | 0 |
| STF3 | 12 nm | 20 | PEG 200 | 0.8 |
| STF4 | 200–300 nm | 20 | PEG 200 | 0.8 |
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