Properties of multi-walled carbon nanotubes-acrylate block copolymers/epoxy resin ternary composites

The multi-walled carbon nanotubes(MWCNTs)-acrylate block copolymers(ACRBC)/epoxy resin(EP) (MWCNTs-ACRBC/EP) ternary composites were prepared. The acid-treated MWCNTs properties were characterized by FTIR, XPS and SEM. The curing process characteristic temperatures of MWCNTs-ACRBC/EP composites were investigated by non-isothermal DSC analysis. The thermal performance of MWCNTs-ACRBC/EP composites were investigated by DMA analysis. The mechanical properties of MWCNTs-ACRBC/EP composites were investigated by electronic tension machine. The results show that the functional groups emerge on the surface of MWCNTs successfully. The curing process of MWCNTs-ACRBC/EP composites is 150℃×1 h+180℃×3 h. The glass transition temperature(T_g) of MWCNTs-ACRBC/EP composites is 197.5℃, which increases by 13.3%. The mechanical properties of MWCNTs-ACRBC/EP composites are improved, the flexural strength of MWCNTs-ACRBC/EP composites is 144 MPa, the flexural modulus of MWCNTs-ACRBC/EP composites is 3662 MPa, and the impact strength of MWCNTs-ACRBC/EP composites is 19.5 kJ/m².