Plasticizer improving dynamic fatigue performance in fiber reinforced elastomers
AssigneeAbaco Drilling Technologies LLC
InventorRobert Bohmer
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Abstract
The dynamic fatigue and hysteresis performances of fiber reinforced rubber compounds are compared using different plasticizers. Fiber reinforced rubber compounds including a non-linear functionalized fatty acid ester, preferably a trimellitate, and more preferably Tris (2-Ethylhexyl) Trimellitate (TOTM) are shown to demonstrate greatly improved dynamic fatigue and hysteretic performance as compared to reference fiber reinforced rubber compounds including conventional reference plasticizers such as Di-isodecyl phthalate (DIDP).
Claims19
A stator for use in a positive displacement motor or a progressing cavity pump, the stator comprising:
- a stator tube having interior helical pathways therein, the helical pathways extending in a longitudinal direction along the stator tube, the stator tube further including a first rubber compound;
- the first rubber compound including aramid fiber reinforcement;
- the first rubber compound further including a trimellitate acting as a plasticizer;
- wherein, when the stator tube receives a rotor to form a positive displacement motor or a progressing cavity pump, rotation of the rotor within the stator tube places a cyclic compressive load on the first rubber compound.
A stator for use in a positive displacement motor or a progressing cavity pump, the stator comprising:
- a stator tube having interior helical pathways therein, the helical pathways extending in a longitudinal direction along the stator tube, the stator tube further including a first rubber compound;
- the first rubber compound including aramid fiber reinforcement;
- the first rubber compound further including Tris (2-Ethylhexyl) Trimellitate (TOTM) acting as a plasticizer;
- wherein, when the stator tube receives a rotor to form a positive displacement motor or a progressing cavity pump, rotation of the rotor within the stator tube places a cyclic compressive load on the first rubber compound.
Dependencies are inferred from the claim text.