Method of sizing of fibers and articles manufactured from the same
AssigneeOxford Performance Materials, Inc.
InventorsScott DeFelice, Anthony DeCarmine
Life of this patent
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Abstract
The method includes the steps of functionalizing a polyaryletherketone (PAEK) polymer, and blending the PAEK polymer with water to form a sizing composition. The method may further include the step of applying the sizing composition to a fiber. The method may further include the step of heating the fibers, coated with sizing composition, for example to between 300C-400C. In some methods, the functionalized PAEK polymer comprises functionalized polyetherketoneketone (PEKK). In yet other methods, the functionalized PAEK polymer comprises sulfonated PEKK (sPEKK).
Claims9
A method of sizing a fiber comprising the steps of:
- functionalizing a polyetherketoneketone (PEKK) polymer by sulfonation to form sPEKK;
- combining the sPEKK with water to form a sizing composition;
- applying the sizing composition to the fiber;
- heating the sized fiber to approximately 150° C. to evaporate the water in the applied sizing composition,
- wherein the sPEKK remains water soluble after the step of heating to evaporate.
A method of sizing a fiber comprising the steps of:
- functionalizing a polyetherketoneketone (PEKK) polymer by sulfonation to form sPEKK;
- combining the sPEKK with water to form a sizing composition;
- applying the sizing composition to the fiber;
- heating the applied sizing composition to a temperature at or above the defunctionalization temperature of the sPEKK, wherein the temperature causes functional groups to detach from the sPEKK.
A method of sizing a fiber comprising the steps of:
- functionalizing a polyetherketoneketone (PEKK) polymer by sulfonation to form sPEKK;
- combining the sPEKK with water to form a sizing composition;
- applying the sizing composition to the fiber;
- wherein the step of functionalizing a polyetherketoneketone (PEKK) polymer by sulfonation to form sPEKK yields sPEKK that is approximately 25% sulfonated.
Dependencies are inferred from the claim text.