Polyfunctional Non-isocyanate Polyurethane for 3D printing as an application
발표자
()
초록
내용
Non-isocyanate polyurethane is synthesized by reacting with bis-5-membered cyclic carbonates and diamines. The polyurethane(PU) has the same quantities of hydroxyl groups as urethane bonds in the middle of polymer chain and the hydroxy groups can be transformed to (meth)acrylate. The multifunctional PU acrylate can be effectively used as a crosslinker. Because a lot of acrylates allow for more crosslinking opportunities compared to PU acrylate, which has acrylates at the end of the polymer, resulting in a fast curing rate. Also a crosslinking density is increased. In addition, the presence of the urethane bond in the main chain contribute to increasing the physical properties due to the intermolecular hydrogen bonding. As a result, multifunctional PU acrylate have an effect on reducing photocuring time dramatically and enhancing physical properties. These advantages are suitable for 3D printing applications, enabling the design of high-performance elastic materials.