Michigan State University

Michael J Rich

Lawrence T Drzal

Laura M Fisher

Narasimharao Dontula

Richard L Schalek

Alekh S Bhurke

Ming Xie

A process using ultraviolet light having a wavelength of 160 to 500 nanometers without higher wavelengths and a high intensity between about 1 and 40 watts/cm to surface treat a carbon containing fiber is described. The treated fiber contains an enhanced amount of oxygen on the surface which significantly improves the bondability of the fiber in composites.

Process for the treatment of a fiber

A method using irradiation with optical light having a wavelength of 160 to 500 nanometers without higher wavelengths with cooling of the surface during the irradiation to modify the surface ( A, A, A, A, A, A) of a substrate ( ) is described. The light is filtered or the lamp ( ) is restricted to the limited range to avoid the affects of the higher spectra. The light can be pulsed or continuous. The method is significantly enhanced by the presence of water ( ) on the surface, preferably also in the presence of ozone in the water. The treated surfaces are more paintable and bondable.

Method for treatment of surfaces with ultraviolet light

A method using irradiation of surfaces A of substrates ( ) with ultra violet light to remove a parting agent is described. The light can be pulsed or continuous. The treated surfaces are more paintable and bondable. The treated molds prevent the introduction of surface inhomogeneities caused by the parting agent.

Growing community of inventors

Williamston, MI, United States of America

Michael J Rich