Polyurethane composition for wind turbine blade

• Main Authors: GOU PENGFEI, ZHOU BAINENG, LI WENKE, ZHONG LIANBING, XIAO YI, XIONG GAOHU
• Format: Patent
• Language: Chinese; English
• Published: 25.03.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a polyurethane composition for a wind power blade, and belongs to the technical field of wind power. The technical problem to be solved by the invention is to provide the polyurethane composition for the wind power blade, and the polyurethane composition can be suitable for a polyurethane system for pouring the large-scale wind power blade. The polyurethane composition for the wind turbine blade comprises a component A and a component B. The component A comprises polyisocyanate, a free radical initiator and an inhibitor. The component B comprises polyol, hydroxyalkyl (meth) acrylate, an unsaturated diluent, a chelating agent and an accelerant. The polyurethane pouring system for the wind power blade has the outstanding characteristics of slow initial reaction, long gelation time, low exothermic peak and the like, solves the problems of fast reaction, short working life, violent heat release and the like of current polyurethane, has the gelation time longer than normal-temperature gela