Publication

UV-Cured Epoxy-Zno Composites: Preparation and Characterization

Marco Sangermano, Federica Sordo
2013
Journal Articles

Abstract

Epoxy-ZnO composites are prepared via UV-induced cationic polymerization. Complete unsoluble materials are achieved after 10min of irradiation. Thermal analyses shows an increase of T-g in the presence of the ZnO attributable to a strong hindrance effect of the polymer chain mobility. Electrical characterization of the cured materials shows the decrease of the real part of permittivity with frequency. Both permittivity and AC conductivity values increase with nanofiller content, especially for the highest contents. This is described as typical behavior of nanocomposites made from polymers and fillers with higher permittivity and conductivity values, in accordance with previous data reported in literature for similar composites.

Official source

https://infoscience.epfl.ch/entities/publication/c13b72f1-d5bf-451c-abf7-5dbcafcdbfde

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Marco Sangermano, Federica Sordo
2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c13b72f1-d5bf-451c-abf7-5dbcafcdbfde

About this result

Related concepts (24)

Composite material

A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual elements. Within the finished structure, the individual elements remain separate and distinct, distinguishing composites from mixtures and solid solutions.

Joule heating

Joule heating, also known as resistive, resistance, or Ohmic heating, is the process by which the passage of an electric current through a conductor produces heat. Joule's first law (also just Joule's law), also known in countries of former USSR as the Joule–Lenz law, states that the power of heating generated by an electrical conductor equals the product of its resistance and the square of the current: Joule heating affects the whole electric conductor, unlike the Peltier effect which transfers heat from one electrical junction to another.

Polymer

A polymer (ˈpɒlᵻmər; Greek poly-, "many" + -mer, "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function.

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