Morphology and Mechanical Properties of UV crosslinkable Urethane link Polysiloxane

초록

Polysiloxanes are a class of specialty polymers that have unique properties that results from its origins at the frontier of inorganic and organic chemistry. Although these polymers are known by their high chemical and thermal stability and non-toxicity, they have a few disadvantages which include low resistance to steam and low tensile strength. They can be synthesized and subsequently modified by the attachment of small molecules that change the properties of the silicone. On the other hand polyurethane (PU) is less thermal and chemical stability, but has excellent physical-mechanical characteristics. In order to combine the valuable properties of these two types of polymer, siloxane-urethane-siloxane systems are often designed to form a coating material. In this study, UV crosslinkable urethane link polydimethylsiloxane (UV-PDMS) resin was synthesized by incorporating vinyl groups into the side chain of the PU using vinyl modified PDMS oil. The morphology and mechanical properties of the prepared UV crosslinkable resins were investigated.