Abstract
Membrane materials with silica nano-hybrid polyurethane resin (PU) and glass fabric (GF) were developed and their weather resistance was investigated. The materials were examined with damage under both high temperature and UV exposure. As a result, the polyurethane resin was easily damaged in the high temperature heat deterioration or UV deterioration process. However, it is confirmed that the hybridization of nano-silica particle by sol-gel method has greatly improved both heat deterioration resistance and UV deterioration resistance. It was also indicted that an effective improvement of weather resistance can be obtained by both increasing the content of silica and changing a molecular structure. The materials hybridized with silica not only improved the storage modulus and the heat resistance but also broadened the applicability in the dynamic viscoelasticity characteristics. In addition, the developed materials would be made with an excellent high temperature characteristics and possibility to be enough for a membrane material by adjusting the content of silica or the molecular structure.
