Search

A systematic study has been carried out to develop a material with significant protection properties from galactic cosmic radiation and solar energetic particles. The research focused on the development of hydrogen-rich benzoxazines, which are particularly effective for shielding against such radiation. Newly developed benzoxazine resin can be polymerized at 120 °C, which meets the low-temperature processing requirements for use with ultrahigh molecular weight polyethylene (UHMWPE) fiber, a hydrogen-rich composite reinforcement. This highly reactive benzoxazine resin also exhibits low viscosity and good shelf-life. The structure of the benzoxazine monomer is confirmed by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. Polymerization behavior and thermal properties are evaluated by differential scanning calorimetry and thermogravimetric analysis. Dynamic mechanical analysis is used to study chemorheological properties of the benzoxazine monomer, rheological properties of the cross-linked polybenzoxazine, and rheological properties of UHMWPE-reinforced polybenzoxazine composites. The theoretical radiation shielding capability of the composite is also evaluated using computer-based simulations. Fil: Iguchi, Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina. Case Western Reserve University; Estados Unidos Fil: Ohashi, Seishi. Case Western Reserve University; Estados Unidos Fil: Abarro, Ghizelle J. E.. University of the Philippines Diliman; Filipinas. Case Western Reserve University; Estados Unidos Fil: Yin, Xianse. Case Western Reserve University; Estados Unidos. Wuhan Textile University; República de China Fil: Winroth, Scott. Material Answers LLC; Estados Unidos Fil: Scott, Chris. Material Answers LLC; Estados Unidos Fil: Gleydura, Molly. Case Western Reserve University; Estados Unidos. Hathaway Brown School; Estados Unidos Fil: Jin, Lin. Case Western Reserve University; Estados Unidos Fil: Kanagasegar, Nithya. Case Western Reserve University; Estados Unidos Fil: Lo, Cherie. Case Western Reserve University; Estados Unidos Fil: Arza, Carlos R.. Case Western Reserve University; Estados Unidos Fil: Froimowicz, Pablo. Case Western Reserve University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina Fil: Ishida, Hatsuo. Case Western Reserve University; Estados Unidos