TABLE OF CONTENTS YOUMEI SUN , YING WANG , ZHIYONG ZHU, CHANGLIN LI
(Institute of Modern Physics, Academia Sinica, P. O. Box 31, Lanzhou 730000, China)
WEIMIN LIU , SHENGRONG YANG
(Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Academia Sinica, Lanzhou 730000, China)
Modification of surface-sensitive properties of the macromolecule polyimide (PI/Kapton) was carried out by 120 KeV N +, Ar + and Fe + implantations with fluences of 5 10 14 to 1 10 17 ions/cm 2. The friction and wear behavior, conductivity and optical absorbance of modified Kapton were investigated. The structure and composition of the treated Kapton were characterized by X-ray photoelectron spectroscopy (XPS). The results indicate that ion implantation decreases the friction coefficient as well as the wear rate, and dramatically enhances the electrcal conductivity and optical absorption. It can be inferred that the improvement of optical and electrical properties is predominantly a consequence of electronic energy transfer, whereas mechanical properties appear sensitive to the damage by nuclear collision, which results in the formation of cross-linking due to strong chemical and structural changes.
Polymer materials and their unique physical properties became a rapidly growing field of modern research due to their light weight, moldability, corrosion resistance, ability to form intricate shapes and low manufacturing cost. They exhibit a broad range of applications from daily life material to high-technology engineering applications. As the developing of polymer science, their some inherent properties, for example softness, electric insulation and optical...
