# Control of Dielectric, Mechanical, and Thermal Properties of a Polymer Composite Based on ABS Using CoB Nanoparticles

## TL;DR

Researchers developed a new method to synthesize magnetic cobalt boride nanoparticles and used them to modify ABS polymer composites, enabling control over their mechanical, magnetic, and dielectric properties.

## Contribution

A low-energy synthesis method for CoB nanoparticles and their use to tune ABS composite properties for broader applications.

## Key findings

- The glass transition temperature of ABS composites can be controlled by varying nanoparticle concentration.
- Composites showed superparamagnetic behavior and a shift in permittivity to low frequencies with higher nanoparticle content.
- The method allows routine ABS to be used in electrical devices by adjusting nanoparticle concentration.

## Abstract

This article is devoted to the development of a new method for the synthesis of magnetic cobalt boride nanoparticles using a low-energy approach. The obtained nanoparticles were used to create composite materials based on industrial thermoplastic ABS. The effect of different concentrations of nanoparticles on the physical, mechanical, magnetic, and dielectric properties of composite materials was studied. It was proven that by varying the concentration of nanoparticles in the ABS composite, it is possible to control the glass transition temperature from 107.5 to 112 °C. The resulting composites demonstrated superparamagnetic behavior, which changed linearly. The permittivity of the composite remained close to that of pure ABS, but a shift in the maximum permittivity to the low-frequency region was observed with an increase in the content of nanoparticles. Thus, a method for controlling the mechanical, magnetic, and dielectric properties of a composite material has been developed, which makes it possible to use routine ABS in a wider range of applications, including electrical devices.