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http://dx.doi.org/10.9713/kcer.2016.54.2.175

Synthesis and Ozone Resistance Characteristic of Fluorine-containing modified Polyurea  

Kim, Sung Rae (Department of Chemical Engineering, Chungbuk National University)
Park, Ji Yong (Department of Chemical Engineering, Chungbuk National University)
Lee, Jong Dae (Department of Chemical Engineering, Chungbuk National University)
Publication Information
Korean Chemical Engineering Research / v.54, no.2, 2016 , pp. 175-180 More about this Journal
Abstract
The fluorine-containing modified polyurea was synthesized using the PTPE-diol to improve the ozone-resistance. Three types (PFDIA-10C, PFDIA-20C, PFDIA-30C) of the modified polyurea containing the fluorine content from 10 wt% to 30 wt% were prepared. After ozone treatment on the prepared films, the weight loss of film was investigated and analyzed the film properties such as hardness, wear resistance, tensile stress, elongation, etc. Also, the film surfaces were observed by the optical microscopy after ozone-resistance tests at 10 ppm for 336 h. It was shown that the defects such as the cracking, the bleaching and the mass loss were reduced and the ozone-resistance of films were improved when the contents of PFPE-diol are more than 20 wt%. It was found that the intensity of O-H peak in PFDIA compounds confirmed by FT-IR was decreased as fluorine contents were increasing.
Keywords
Perfluoropolyether Diol; Perfluorine Diisocyanate; Polyfluorineurea; Ozone-resistance;
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Times Cited By KSCI : 3  (Citation Analysis)
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