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Covestro has joined forces with partners and developed a polyurethane (PU) resin and a manufacturing technology, which – in conjunction with glass fiber mats and an efficient production process – enables shorter cycle times.
Its advantage over epoxy resins used so far is that it flows more easily and ensures better wetting of the glass fiber mats used for reinforcement.
Covestro has recently processed the first commercial order for utilisation of the PU resin for production of eighteen wind rotor blades with a length of 59.5 meters each, together with the respective spar caps and shear webs, all manufactured by Zhuzhou Times New Material Technology (TMT). The blades were delivered to Envision and are scheduled to be installed in a wind farm in Eastern China in July 2019.
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