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http://dx.doi.org/10.12925/jkocs.2014.31.4.711

A Study on Measurement of Mechanical Properties of Polyther Polyol Base Polyurethane Dispersion by 1,4-butanediol Chain Extension  

Lee, Joo-Youb (Department of Disaster Management and Safety Engineering, Jungwon University)
Publication Information
Journal of the Korean Applied Science and Technology / v.31, no.4, 2014 , pp. 711-718 More about this Journal
Abstract
In this paper, the mechanical property change was investigated by adding 1,4-butanediol as chain extender of polyurethane dispersion for leather coating. Reagents for the synthesis were polypropylene glycol(PPG), isoporon diisocyanate(IPDI), dimethylolpropionic acid(DMPA) and 1,4-BD. All samples showed good solvent resistance and flexibility by different content of the 1,4-BD. As results, samples which contains a lot of 1,4-BD showed good properties whth strength of $1.80kg_f/mm^2$ and abrasion test measurement of 49.54 mg.loss. According to elongation test, the sample which contains low amount of 1,4-BD was good property as 364 %.
Keywords
dispersion; polyurethane; leather coatings; chain extention; 1,4-butanediol;
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