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http://dx.doi.org/10.5764/TCF.2022.34.4.261

The Effect of Double-mixed Particle Size Distribution on the Properties of Waterborne Polyurethane Resin  

Jo, Kyoung-Il (Korea Institute of Footwear & Leather Technology(KIFLT))
Ko, Jae-Wang (Korea Institute of Footwear & Leather Technology(KIFLT))
Kim, Il-Jin (Korea Institute of Footwear & Leather Technology(KIFLT))
Lee, Jin Hong (School of Chemical Engineering, Pusan National University)
Lee, Seung Geol (School of Chemical Engineering, Pusan National University)
Publication Information
Textile Coloration and Finishing / v.34, no.4, 2022 , pp. 261-271 More about this Journal
Abstract
Waterborne polyurethane(WPU) is greatly affected by its properties depending on the average particle size. In this study, by analyzing the characteristics of WPUs with different average particle sizes according to the DMPA content and we confirmed that the WPU-Ms have different properties from the physical properties of WPU by mixing two types of WPU with different particle sizes in the same volume. At this time, we mixed WPU at an ideal ratio of 7:3 through literature research. In the thermal characteristic analysis, it was confirmed that the thermal decomposition temperature decreased and Tg increased as the content of DMPA, which is the hard segment, increased. In addition, the average particle size of WPU decreased as DMPA increased, and physical properties and adhesive strength were improved due to increased interaction. When mixed with each other in a weight ratio of 7:3, it was observed that adhesion and mechanical properties were improved compared to only WPU.
Keywords
waterborne polyurethane; particle size distribution; eco-friendly; ionomer content; high solid content;
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