Experimental investigations of mechanical and electrical characteristics of a nanomodified epoxy resin DER-330

International Conference and Youth Scientific School on "Materials and Technologies of New Generations in Modern Materials Science"

Brusentseva, T.A.^1

Khristianovich Institute of Theoretical and Applied Mechanics, SB RAS, Institutskay str., 4/1, Novosibirsk, Russia^1

关键词: Alumina Nanoparticle;    Dielectric permittivities;    Experimental investigations;    Mechanical and electrical;    Mechanical characteristics;    Strength characteristics;    Technique preparation;    Three point bending;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/156/1/012028/pdf
DOI  :  10.1088/1757-899X/156/1/012028

来源: IOP

【 摘 要 】

Technique preparation of a composite material based on epoxy resin DER-330 and 5 different nanopowders has been developed. The modifiers exert a positive effect on the elastic modulus, flexural strength, and dielectric permittivity of the epoxy-anhydride polymers. Weight content of nanoadditives in the matrix ranged from 0% to 4%. Dependences between mechanical properties of epoxy composites and concentration and nature of the filler were investigated in a three-point bending. Morphology of the fracture surface was studied. The complex analysis of nanofillers allowed us optimum fillers and concentrations when a significant increase of elastic and strength characteristics is achieved. It was showed that addition of silica fume nanoparticles A-380 to the matrix increases fracture stress on 30%. Composites with nanoparticles of aluminum nitride showed the best mechanical values in case of jointly investigated parameters. Growth of the elastic modulus is 12% and increase of the fracture stress is 7%. Adding alumina nanoparticles and nanofibers in the range of investigated concentration does not lead to significant changes in the mechanical characteristics of the composite.