Study on blend system of epoxy modified polytriazole resin
The polytriazole resin(PTA)was modified by blending bisphenol A epoxy resin 6150 and alicyclic glycidyl trifunctional epoxy resin TDE85.The thermal and mechanical properties of modified resin and its T700 composite materials were investigated.The results showed that when the mass ratio of 6150,TDE85,and PTA in the blend resin system was 1∶1∶2,epoxy resin could enhance the toughness of PTA,improve the interface between PTA resin and carbon fiber,and thus had a favorable effect on the mechanical properties of the composite material.Compared to T700/PTA composite material,the 0 ° compressive strength of T700/epoxy PTA composite material reached 1 259.6 MPa,and the interlayer shear strength reached 100.9 MPa,which was an increase of 67.6％and 142.5％,respectively.The polytriazole resin could effectively improve the temperature resistance of epoxy resin systems,and the glass transition temperature of the blend system was 191.6 ℃.The properties of epoxy resin and PTA resin complement each other,blending not only enhances the heat resistance of epoxy resin,but also improves the process performance of PTA resin.
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