Novel hybrid composite based on bio-PET with basalt/carbon fibre

The aim of this work was to evaluate the possibility of manufacturing hybrid composites based on one of the latest generations of bio derivative polyethylene terephthalate with equal amounts of basalt and carbon fibres. This combination of two types of fibres gives the opportunity to obtain synergistic strength and performance properties. Samples obtained by injection moulding were characterized by morphological, mechanical (tensile, flexural, impact) and processing (softening temperature, thermal expansion and shrinkage) properties. Lightweight and bio-based hybrid composites based on bio-PET matrix with already 10 wt% basalt fibres and 10 wt% carbon fibres are characterized by more than 90 % increase in tensile strength and they have almost four times increase in the modulus of elasticity at a wide range of temperatures. Due to the good mechanical properties of hybrid composites, they can be successfully used in various industry sectors, mainly for consumer goods, household appliances and in automotive industry. Products made of bio-based sources pose a significantly lower threat to the environment than those from petrochemical sources.