Papers by Keyword: Vapor Deposition Polymerization

Abstract: An increase in the durability and reliability of the technological equipment and tools with regard to economic and environmental factors is directly related to the tribological properties of coupling details (wear resistance, coefficient of friction, seizure, etc.). The problem can be solved only through the deep and science-based approaches, one of which should be considered is surface engineering. The article discusses the use of the hybrid technology of the surface synthesis of nanostructured composite polimer-ceramics coatings to manufacture face seals of high-precision durable, low-torque and fast-running mechanisms.

Abstract: In this paper, we report on the preparation and characterization of polyimide (PI) thin films through vapor deposition polymerization (VDP). PI thin films were formed by vapour co-deposition of the precursor monomers pyromellitic dianhydride (PMDA) and 4,4-oxydianiline (ODA) following a thermal treatment at a temperature of over 300°C. The effects of the polymerization temperature on the characterization of PI films were investigated using scanning electron microscopy and Fourier transform infrared spectroscopy. The results showed that the deposited polyamic acid (PAA, a precursor of polyimide) with imidization in the temperature interval of 300-400°C are smooth, uniformly thick and form without shrinkage.