<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Composites based on a polypropylene matrix with coffee ground powder, wood flour and tuff of a mass weight of 12.5wt% were produced by the method of injection moulding. Tests of tensile and bending strength properties were carried out and Charpy impact was determined at three temperatures: -24°C, 22°C and 80°C. Scanning electron microscopy (SEM) images were taken to assess the effects of reinforcement and homogenization of mixtures and to determine the characteristics of the microstructure. Composites with 12.5wt% coffee ground powder, wood flour and tuff were characterized by an increase the elastic modulus. Tensile strength slightly decreased for composites with ground coffee grains and tuff.</p></abstract>

Composites based on a polypropylene matrix with coffee ground powder, wood flour and tuff of a mass weight of 12.5wt% were produced by the method of injection moulding. Tests of tensile and bending strength properties were carried out and Charpy impact was determined at three temperatures: -24°C, 22°C and 80°C. Scanning electron microscopy (SEM) images were taken to assess the effects of reinforcement and homogenization of mixtures and to determine the characteristics of the microstructure. Composites with 12.5wt% coffee ground powder, wood flour and tuff were characterized by an increase the elastic modulus. Tensile strength slightly decreased for composites with ground coffee grains and tuff.

Composites Based on Polypropylene Modified with Natural Fillers to Increase Stiffness

Institute of Material Engineering, Faculty of Mechanical Engineering

Technical Transactions

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Composites based on a polypropylene matrix with coffee ground powder, wood flour and tuff of a mass weight of 12.5wt% were produced by the method of injection...

Composites Based on Polypropylene Modified with Natural Fillers to Increase Stiffness

Published Online: May 16, 2020

Page range: 187 - 195

Received: Nov 14, 2018

DOI: https://doi.org/10.4467/2353737XCT.19.013.10053

Keywords
polypropylene, natural fillers, mechanical properties, composites

© 2020 Anna Kufel et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Composites Based on Polypropylene Modified with Natural Fillers to Increase Stiffness

Published Online: May 16, 2020

Page range: 187 - 195

Received: Nov 14, 2018

DOI: https://doi.org/10.4467/2353737XCT.19.013.10053

Keywordspolypropylene, natural fillers, mechanical properties, composites

© 2020 Anna Kufel et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
polypropylene, natural fillers, mechanical properties, composites