Pre-aging of rollers, gaskets, or o-rings to improve material response to compression set and compression stress relaxation
First Claim
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1. A method of stabilizing an elastomeric property of an elastomeric material, comprising:
- placing the elastomeric material in a pressurizing chamber;
applying a hydrostatic pressure to the elastomeric material within the pressurizing chamber to at least partially compress the elastomeric material, wherein the hydrostatic pressure applied to the elastomeric material within the pressurizing chamber is less than a pressure required to deflect the elastomeric material beyond an elongation limit of the elastomeric material; and
maintaining application of the hydrostatic pressure for a period of time to at least partially stabilize a restorative force exhibited by the elastomeric material in response to subsequent exposures of the elastomeric material to a compressive force, wherein the hydrostatic pressure pre-compresses the elastomeric material to advance the elastomeric material to a condition where the restorative force of the elastomeric material is more stable.
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Abstract
Provided is a method of stabilizing an elastomeric property of an elastomeric material. The method includes placing the elastomeric material in a pressurizing chamber and applying a suitable hydrostatic pressure to the elastomeric material within the pressurizing chamber to at least partially compress the elastomeric material. Application of the hydrostatic pressure is maintained for a period of time suitable to at least partially stabilize a restorative force exhibited by the elastomeric material in response to subsequent exposures of the elastomeric material to a compressive force.
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Citations
14 Claims
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1. A method of stabilizing an elastomeric property of an elastomeric material, comprising:
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placing the elastomeric material in a pressurizing chamber; applying a hydrostatic pressure to the elastomeric material within the pressurizing chamber to at least partially compress the elastomeric material, wherein the hydrostatic pressure applied to the elastomeric material within the pressurizing chamber is less than a pressure required to deflect the elastomeric material beyond an elongation limit of the elastomeric material; and maintaining application of the hydrostatic pressure for a period of time to at least partially stabilize a restorative force exhibited by the elastomeric material in response to subsequent exposures of the elastomeric material to a compressive force, wherein the hydrostatic pressure pre-compresses the elastomeric material to advance the elastomeric material to a condition where the restorative force of the elastomeric material is more stable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of stabilizing an elastomeric property of an elastomeric material, comprising:
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placing the elastomeric material in a pressurizing chamber; and applying hydrostatic pressure to the elastomeric material within the pressurizing chamber for a period of time to at least partially stabilize the elastomeric property of the elastomeric material, wherein the hydrostatic pressure applied to the elastomeric material within the pressurizing chamber is less than a pressure required to deflect the elastomeric material beyond an elongation limit of the elastomeric material, and the elastomeric property comprises a compression-set-relaxation value of the elastomeric material, and the compression-set-relaxation value is at least partially stabilized when a rate of degradation of the compression-set-relaxation value slows relative to an initial rate of degradation, wherein the hydrostatic pressure pre-compresses the elastomeric material to a condition where the compression-set-relaxation value of the elastomeric material is more stable.
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Specification