Thermal curing of maleimidobenzoxazines (MB-Rs) with n-butyl, 2-ethylhexyl, allyl, and phenyl substituents was carried out in the presence of tetrafunctional thiols with pentaerythritol and glycolurea cores. The thermosets were prepared by the following curing processes: directly curing the mixtures at 140–160 °C and postcuring the building block. The effects of the network polymer structures on the thermal stability and mechanical properties of the thermosets were investigated. The thermosets showed excellent decomposition temperatures, i.e., Td5 = 215–309 °C and Td50 = 318–587 °C. The mechanical properties were modified by introducing a 2-ethylhexyl group, and stretchable and bendable thermosets were obtained.
- Minako Takasu
- Kanta Sugiura
- Akikazu Matsumoto
