Methods For Modification Of Aramid Fibers
OwnerNihal Kanbargi, Alan J. Lesser +3inventors
InventorsNihal Kanbargi, Alan J. Lesser, Wei Zhao, Sheel P. Agarwal, Mindaugas Rackaitis
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Abstract
Methods are described for treatment of aramid fibers to modify the surface of the fibers. The treated fibers have improved adhesion to elastomer materials as compared to untreated fibers. Modification methods include irradiating the fibers, compressing and straining the fibers under a constant pull force and immersing the fibers in a coupling agent fluid. The treated fibers can be used with elastomers and provide reinforcement elements in products such as tires.
Claims21
A method for modifying the surface of an aramid fiber, the method comprising:
- a. contacting the aramid fiber with an acid solution to form a pre-treated aramid fiber;
- b. removing the aramid fiber of step (a) from the acid solution and immersing the pre-treated aramid fiber in a liquid;
- c. irradiating the pre-treated aramid fiber in the liquid to modify the surface of the aramid fiber;
- and
- d. removing the aramid fiber from the liquid.
3-5. (canceled)
(canceled)
11-12. (canceled)
The method of claim 12, the solvent being supercritical carbon dioxide.
(canceled)
The method of claim, the aramid fiber of step (d) being immersed in the coupling agent fluid for a period of 30 minutes to 2 hours, wherein the aramid fiber has an adhesion greater than 0.8 MPa to a rubber composition as determined by TEST #1.
22-23. (canceled)
25-62. (canceled)
Dependencies are inferred from the claim text.