酸酐固化型环氧树脂在风电叶片化学降解回收中的应用研究OA

The anhydride-cured epoxy resin can be made into structural parts such as wind turbine blades and girders by pultrusion process.After crosslinking,it is difficult to degrade and recycle,which is one of the difficulties in the treatment of wind turbine blades.Methyl tetrahydro phthalic anhydride is a kind of anhydride curing agent.The effects of different liquid organic amines,different catalysts and different process conditions on the degradation of epoxy resin block cured by this anhydride were studied,and the best combination of degradation solution and degradation catalyst and degradation process conditions were determined,which realized the rapid degradation of anhydride cured epoxy system.At the same time,the degraded products were extracted and separated,and detected by infrared ray(IR)and nuclear magnetic resonance(NMR),and the main components of the recovered products were determined.Moreover,the degradation mechanism of the anhydride-cured epoxy resin by liquid organic amine was deduced,which provided a new idea and beneficial exploration for chemical recovery and reuse of the anhydride-cured epoxy resin.