| Abstract Scope |
Cyanate ester (PT-30) resin boasts remarkable thermal and mechanical properties, including a high heat distortion temperature and glass transition temperature (Tg), along with exceptional mechanical characteristics. Similarly, the homopolymer of tris(2-hydroxyethyl)isocyanurate triacrylate (T-acrylate) exhibits a superior Tg compared to other acrylates. By combining PT-30 and T-acrylate, interpenetrating polymer network (IPN) is formed through dual curing mechanisms. A formulated ink comprising PT-30, T-acrylate, photoinitiator, and rheological additive underwent UV light and thermal curing. Characterization via Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Mechanical Analysis (DMA), Thermo Gravimetric Analysis (TGA), and tensile testing confirmed the successful IPN formation, enhancing mechanical properties and elevating the Tg. The study underscores the viability of Ink Extrusion 3D printing with cyanate ester resin and T-acrylate, offering high-performance structural solutions applicable in aerospace, defense, and microelectronics, with structures exhibiting ~80% tensile strength retention at 200°C and a high Tg of 349±3°C. |