Research Article
Physical Characteristics of Tetrahydroxy and Acylated Derivatives of Jojoba Liquid Wax in Lubricant Applications
Table 3
Four-ball antiwear and extreme pressure properties of the neat jojoba oil and ester derivatives.
| | Property | ASTM method | Jojoba oil | Jojoba esters | | Acetate | Propionate | Valerate |
| | 4-ball AW | D-4172 | — | — | — | — | | D-5183 | | COF | — | 0.065 ± 0.001 | 0.046 ± .000 | 0.044 ± 0.003 | 0.050 ± 0.002 | | wsd (mm) | — | 0.589 ± 0.014 | 0.811 ± 0.042 | 0.756 ± 0.029 | 0.634 ± 0.030 | | 4-ball EP | D-2783 | — | — | — | — | | weld point (kgf) | — | 120 | 160 | 140 | 140 |
|
|
