The influence of recycling number on the mechanical, chemical, thermal and rheological properties of poly(butylene terephthalate)/polycarbonate binary blend and glass-fibre-reinforced composite

Kuram, Emel; Özçelik, Babür; Yılmaz, Faruk

doi:10.1177/0892705715569823

Cited by 23 publications

(19 citation statements)

References 31 publications

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“…Materials 2021, 14, 483 2 of 13 PBT components are mainly manufactured by injection methods in which short, glass fibers are incorporated as reinforcement. The reinforced material obtained can be shredded and injected in a further process maintaining good mechanical properties [22]. PBT components show good strength and stiffness properties but also poor performance as regards impact and fracture mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

et al. 2021

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The aim of this work was to show the evolution over time of the dynamic moduli in components made of Polybutylene Terephthalate reinforced with glass fiber when they are held to temperatures close to the glass transition temperature over time. For this purpose, PBT samples reinforced with short, glass fibers of Ultradur® material with 0%, 20%, and 50% in weight content were tested. Dynamic moduli showed an increment with glass fiber content showing a nonlinear behavior with the temperature. The evolution of storage modulus was depicted by means of a modified law of mixtures with an effectiveness factor depending on temperature and fiber content, whereas the evolution over time was obtained with a time–temperature transformation generated with the TTS Data Analysis software of TA-instruments for a given temperature. Storage modulus showed a linear relationship with glass fiber content when components were held to temperatures near to their respective glass transition temperature, obtained from the maximum of loss modulus curve with temperature. In summary, the value and evolution of dynamic moduli of PBT samples improved with glass fiber content, allowing us to increase the durability of components when they are submitted to high-temperature environments.

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Section: Introductionmentioning

confidence: 99%

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

et al. 2021

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“…1,2 To improve mechanical and thermal properties, glass fiber is the most widely used reinforcing material in PBT and its blends. 3–21…”

Section: Introductionmentioning

confidence: 99%

The mechanical and thermal properties of chopped basalt fiber-reinforced poly (butylene terephthalate) composites: Effect of fiber amount and length

Arslan

Doğan

2019

Journal of Composite Materials

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In this study, the effects of basalt fiber (BF) amount and initial fiber length on tensile, flexural and impact properties of poly (butylene terephthalate) (PBT)-based composites are studied. The effect of BF amount on thermomechanical and thermal properties of the composites is also investigated using dynamic mechanical analysis, differential scanning calorimeter and thermal gravimetric analysis. The BF is used at concentrations of 5, 10, 20 and 30 wt% and with different initial lengths of 3, 6 and 12 mm under constant loading of BF (20 wt%). According to the test results, the addition of BF improves the tensile strength and thermal stability of PBT at 20 and 30 wt% loading. Flexural strength and elastic modulus increase steadily as the added amount of BF increases. The addition of BF favors crystallization up to 10 wt% loading. No remarkable effect of initial fiber length is observed on the mechanical properties of the composites.

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“…These studies have shown that the tensile modulus, tensile strength, flexural modulus and flexural strength of the recycled material decrease compared to the virgin material. In contrast, the tensile strain at break and impact strength of the recycled material increase (Bernasconi et al, 2007;Bourmaud and Baley, 2007;Colucci et al, 2017;Giraldi et al, 2004;Kuram et al, 2014;Kuram et al, 2016). During all these experiments, a maximum of five recycling steps were executed.…”

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confidence: 99%

The Influence of Mechanical Recycling on Properties in Injection Molding of Fiber-Reinforced Polypropylene

Evens

Bex

Yigit

et al. 2019

International Polymer Processing

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Due to higher mechanical demands on technical parts, the application of short fiber reinforced thermoplastics for injection molding is strongly increasing. Therefore, more attention needs to be paid to the optimization of their recycling processes. Mechanical shredding of thermoplastics into granules is a common recycling method within polymer industries. The breaking of polymer chains and reinforcing fibers during this process may affect the material properties. This study presents the effect of ten recycling sequences on four different materials: polypropylene, glass fiber filled polypropylene, carbon fiber filled polypropylene and flax fiber filled polypropylene. Tests indicate that recycling has a negative influence on most of the mechanical properties. Polypropylene without fibers forms an exception as it does not exhibit any significant change in material properties. Glass fiber and carbon fiber reinforced polypropylene show a decrease in stiffness and tensile strength during the recycling steps. The impact strength of carbon and flax fiber reinforced polypropylene increases whereas that of glass fiber reinforced polypropylene decreases.

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The influence of recycling number on the mechanical, chemical, thermal and rheological properties of poly(butylene terephthalate)/polycarbonate binary blend and glass-fibre-reinforced composite

Cited by 23 publications

References 31 publications

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

Dynamic Moduli of Polybutylene Terephthalate Glass Fiber Reinforced in High-Temperature Environments

The mechanical and thermal properties of chopped basalt fiber-reinforced poly (butylene terephthalate) composites: Effect of fiber amount and length

The Influence of Mechanical Recycling on Properties in Injection Molding of Fiber-Reinforced Polypropylene

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