2023

Sustainability

Journal year: 2023 | Journal volume: vol. 15 | Journal number: iss. 14

scientific article

english

EN The presented research focused on the evaluation of the novel concept of the overmolding technique using self-reinforced composite prepregs and recycled polymer blends. In order to evaluate the effectiveness of the proposed manufacturing technique, several series of materials based on polycarbonate/polyethylene terephthalate (PC/PET) and polycarbonate/polyethylene terephthalate glycol (PC/PETG) blends were prepared. The reinforcing component in the form of overmolded prepreg was made from polyester-based self-reinforced composite (srPET). The prepared materials were compared in terms of mechanical properties and heat resistance; the study was supplemented by thermal analysis measurements. Considering the mechanical characteristics, the overmolding technique turns out to be an effective method of improving the properties of composites, and the increase in impact strength turns out to be particularly beneficial. The increase of the impact strength for the overmolded PC/PET blend reached 430% for PC/PETG sample 330%, while for the PC-based composite, only 100%. The expected improvement in thermomechanical properties turned out to be difficult to achieve due to the rapid softening of the srPET prepreg at around 70 °C. However, technological tests and properties analysis indicated that the use of PC-based blends makes it possible to create a permanent connection with reinforcement based on srPET prepregs, which can significantly expand the potential of applications of this type of material. The presented research confirmed that the self-reinforced composites can be successfully used as reinforcement for recycled polymer blends.

20.07.2023

11318-1 - 11318-16

10.3390/su151411318

https://www.mdpi.com/2071-1050/15/14/11318

Article Number: 11318

CC BY (attribution alone)

open journal

final published version

at the time of publication

100

3,3