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Investigation of the Accelerated Ageing of Carbon-Epoxy Composites on their Mechanical Properties

Dorota Zielińska
Dorota Zielińska
, 
Katarzyna Kośla
Katarzyna Kośla
, 
Ewelina Kosińska
Ewelina Kosińska
, 
Edyta Chmal-Fudali
Edyta Chmal-Fudali
, 
Bartłomiej Bereska
Bartłomiej Bereska
, 
Barbara Helizanowicz
Barbara Helizanowicz
 und 
Anna Bednarowicz
Anna Bednarowicz
   | 15. Dez. 2023
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Article Category: Research Article
Online veröffentlicht: 15. Dez. 2023
Seitenbereich: 73 - 80
DOI: https://doi.org/10.2478/ftee-2023-0057
Schlüsselwörter
© 2023 Łukasiewicz Research Network-Łódź Institute of Technology, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Thermogravimetric analysis of a) Sample 1 & b) Sample 2
Thermogravimetric analysis of a) Sample 1 & b) Sample 2

Fig. 2.

Reemission coefficient of composite before accelerated ageing
Reemission coefficient of composite before accelerated ageing

Fig. 3.

Reemission coefficient of accelerated ageing of composites under UV conditions after 6 months
Reemission coefficient of accelerated ageing of composites under UV conditions after 6 months

Fig. 4.

Reemission coefficient of accelerated ageing of composites under water conditions after 6 months
Reemission coefficient of accelerated ageing of composites under water conditions after 6 months

Fig. 5.

Scanning electron microscopy of Sample 1 at magnification x1000: a) non-aged b) after 6 months of accelerated ageing under UV-radiation conditions c) after 6 month’s immersion in salt water
Scanning electron microscopy of Sample 1 at magnification x1000: a) non-aged b) after 6 months of accelerated ageing under UV-radiation conditions c) after 6 month’s immersion in salt water

Fig. 6.

Scanning electron microscopy of Sample 2 at magnification x1000: a) non-aged b) after 6 months of accelerated ageing under UV-radiation conditions c) after 6 month’s immersion in salt water
Scanning electron microscopy of Sample 2 at magnification x1000: a) non-aged b) after 6 months of accelerated ageing under UV-radiation conditions c) after 6 month’s immersion in salt water

Mass and density of composites during accelerated ageing under UV conditions or water

Before accelerated ageing After 6 months of accelerated ageing under UV After 6 months of accelerated ageing under water
Sample 1 Sample 2 Sample 1 Sample 2 Sample 1 Sample 2
Mass [g] 2.84 ± 0.02 2.81 ± 0.02 2.87 ± 0.02 2.84 ± 0.02 2.86 ± 0.02 2.81 ± 0.02
Density [g/cm3] 1.49 ± 0.02 1.49 ± 0.02 1.51 ± 0.02 1.53 ± 0.02 1.52 ± 0.02 1.53 ± 0.02

5% (T5) and 50% (T50) temperature-induced mass loss of samples

Before accelerated ageing After 6 months of accelerated ageing under UV After 6 months of accelerated ageing under water
Sample 1 Sample 2 Sample 1 Sample 2 Sample 1 Sample 2
T5% 218 ± 27°C 297 ± 19°C 327 ± 21°C 298 ± 15°C 314 ± 22°C 287 ± 17°C
T50% 593 ± 41°C 675 ± 37°C 659 ± 28°C 674 ± 42°C 653 ± 33°C 652 ± 39°C

Mechanical parameters of composites before and after accelerated ageing

Before accelerated ageing After 6 months of accelerated ageing under UV After 6 months of accelerated ageing under water
Sample 1 Sample 2 Sample 1 Sample 2 Sample 1 Sample 2
Compressive strength (MPa) 651.2 ± 35.4 591.9 ± 69.2 542.2 ± 42.5 483.5 ± 70.9 468.8 ± 88.5 308.6 ± 121.1
Flexural strength (MPa) 966.1 ± 25.7 943.4 ± 27.4 870.6 ± 27.7 948.3 ± 39.6 902.2 ± 45.7 688.4 ± 36.2
Flexural modulus (GPa) 57.2 ± 1.3 60.3 ± 1.8 55.0 ± 1.7 55.7 ± 4.1 55.0 ± 1.2 57.6 ± 1.0
eISSN:
2300-7354
Sprache:
Englisch
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6 Hefte pro Jahr
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