Effects of polyurethane-based coating agent compositions on their abrasion resistance and friction coefficient. (12th December 2017)

• Record Type: Journal Article
• Authors: Kim, Yong-Sung; Park, Sung-Jin; Lee, Seungjae; Park, Chan-Young; Lee, Won-Ki
• Is Part Of: Molecular crystals and liquid crystals. Volume 659(2017)
• Page Start: 28
• Page End: 33
• Publication Date: 2017-12-12
• Subjects: Coating agent -- friction coefficient -- PE wax -- polyurethane; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2018.1449795
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: Although polyurethane (PU)- and polysiloxane-based coating agents find wide applications in electronics and automotive industries (e.g., for sealing), their full potential can be realized only based on a deep understanding of property-determining factors. To contribute to this understanding, we synthesized PU resins from polycarbonate diol, poly(tetramethylene glycol), and 4, 4-diphenylmethane diisocyanate. The abrasion resistance, modulus, and tensile strength of PU films increased with increasing hard segment content whereas the elongation at break of these films concomitantly decreased. PU-based coating agents were prepared by adding PE wax and other modifiers and their friction coefficients were investigated. A friction coefficient of coating agent was strongly affected by particle size and content of PE waxes.