Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Preparation, Surface Characteristics and Physical Properties of Polyurethane-based Gel-coat Containing Reactive Silicone Oligomers

  • Jang, Su-Hee (Department of Polymer Science & Engineering, Dankook University) ;
  • Baek, Seung-Suk (Department of Polymer Science & Engineering, Dankook University) ;
  • Hwang, Seok-Ho (Department of Polymer Science & Engineering, Dankook University)
  • Received : 2016.11.07
  • Accepted : 2016.11.24
  • Published : 2016.12.31
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Abstract

Two different reactive silicone oligomers, hydroxylpropyl terminated PDMS (PDMS-L) and 1-(2,3-dihydroxy-propoxy)propyl terminated PDMS (PDMS-B), were synthesized through hydrosilylation reaction under Karstedt's catalyst. Using the reactive silicone oligomers, two different silicone-modified gel-coat series were prepared to investigate their thermal and mechanical properties as well as surface characteristics according to reactive silicone oligomer contents. In case of thermal stabilities and mechanical properties, the gel-coat series containing PDMS-B showed higher values than that of the gel-coat series containing the PDMS-L. The contact angle for the gel-coat containing both silicone oligomers/was increased with reactive silicone oligomer contents but there was similar surface tension between PDMS-L and PDMS-B.

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