Title
The Use of the Overmolding Technique for the Preparation of Basalt Fiber (BF)-Based Composite, the Comparative Study of Poly(ethylene terephthalate)/Polycarbonate-PET/PC and Poly(butylene terephthalate)-PBT/PC Blends
Authors
[ 1 ] Instytut Technologii Materiałów, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ 2 ] Wydział Inżynierii Materiałowej i Fizyki Technicznej, Politechnika Poznańska | [ 3 ] Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] employee | [ S ] student
Scientific discipline (Law 2.0)
Year of publication
2026
Article type
scientific article
Publication language
english
Keywords
Abstract
EN The presented study is focused on the evaluation of the mechanical and heat resistance performance of the polyester-based injection-molded components. For comparative purposes, we used a poly(ethylene terephthalate)/polycarbonate blend (PET/PC) and a poly(butylene terephthalate)/polycarbonate (PBT/PC) mixture, where both types of polymer blends were used as a matrix for different types of basalt fiber (BF)-reinforced composites. The investigated molding procedure consists of injection overmolding of the composite prepreg (insert). During the technological procedure, various material configurations were used, including overmolding with both unmodified blends and a composition with additional short basalt fibers. The results confirmed that the best balance of properties was obtained for complex parts reinforced with short BF and overmolded insert, where the tensile modulus can reach 8 GPa, while the impact strength was more than 30 kJ/m2. The results of comparative tests indicate a significantly higher strength of overmolding joints for PET/PC-based materials. The relatively low heat deflection temp. (HDT) of around 70 °C after the injection molding procedure can be successfully improved by the annealing treatment, where the HDT can reach around 120 °C. The structural tests revealed that, besides some differences in crystallinity between the PET- and PBT-based blends, the thermomechanical performance of the manufactured composites is almost similar. It is worth pointing out the fundamental differences in the miscibility of the investigated blend systems, where for the PBT/PC mixture structural tests confirm the miscibility of polymer phases, while PET/PC particles are immiscible.
Date of online publication
24.12.2025
Pages (from - to)
54-1 - 54-27
License type
CC BY (attribution alone)
Open Access Mode
open journal
Open Access Text Version
original author's version
Date of Open Access to the publication
at the time of publication
Ministry points / journal
100
System created by Poznań University of Technology
and Poznan Supercomputing and Networking Center
Log in through eKonto to add to SIS