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Preparation of Waterborne Polyurethane Dispersion Based on Siloxane Polyal

실록산 폴리올의 도입에 따른 수분산성 폴리우레탄의 제조

  • Published : 2007.08.31

Abstract

Waterborne polyurethane dispersions (WPUD) were prepared by poly(ethylene glycol) adipate as the polyester type, ${\alpha},{\omega}-hydroxyalkyl$ terminated polydimethylsiloxane (PDMS-diol) as the polysiloxane type, hexamethylene diisocyanate, and isophorone diisocyanate, dimethylol propionic acid. The effects of PDMS-diol contents on the particle size, thermal and surface properties of WPUD were investigated. The structures of the synthesized WPUD were confirmed using by FT-IR. The surface, thermal and mechanical properties were investigated by measuring the contact angles, DSC, TGA and UTM. As PDMS-diol contents increased, the particle size, the contact angle, and the elongation was increased, while the tensile strength was decreased. Also the thermal stabilities of the synthesised WPUD were increased as PDMS-diol contents increased.

Keywords

Waterborne polyurethane dispersions;Poly(ethylene glycol) adipate;Polydimethylsiloxane;Incompatibility

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