Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid
This paper deals with changes in selected properties of composite material and surface degradation after exposure to an acidic environment. A carbon fiber-reinforced composite (CFRP) produced from prepregs was tested. The weight change, micro-hardness, and surface degradation of the CFRP composite m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2023-03-01
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| Series: | Production Engineering Archives |
| Subjects: | |
| Online Access: | https://doi.org/10.30657/pea.2023.29.1 |
| _version_ | 1827815322180124672 |
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| author | Kojnoková Tatiana Nový František Markovičová Lenka Harea Evghenii |
| author_facet | Kojnoková Tatiana Nový František Markovičová Lenka Harea Evghenii |
| author_sort | Kojnoková Tatiana |
| collection | DOAJ |
| description | This paper deals with changes in selected properties of composite material and surface degradation after exposure to an acidic environment. A carbon fiber-reinforced composite (CFRP) produced from prepregs was tested. The weight change, micro-hardness, and surface degradation of the CFRP composite made of cured pre-impregnated laminates were evaluated in this study. Material consisting of a DT121R epoxy resin matrix with high reactivity and high viscosity, with two reinforcing carbon fabrics layers, is characterized by a low value of tensile strength. Evaluation of changes in the material properties was performed before and after exposure to specific environmental conditions, which are achieved by using a chemical solution of 15% H2SO4 at various temperatures. Subsequently, the effect of 15% H2SO4 at various temperatures on the material properties was monitored. The specimens were immersed in the solution for up to 3 and 6 weeks at the temperatures of 23°C, 40°C, and 60°C. It was found out, that the degradation of the composite material is conditioned by the aging of the epoxy resin (matrix). Carbon fibers (reinforcement) are relatively stable. The weight change, micro-hardness, and surface quality depend on the time of exposure to acidic solution and temperature. The micro-hardness tests show a significant influence on exposure time. The biggest changes in weight change and surface quality of the CFRP composite were observed after exposure at the temperature of 60°C. |
| first_indexed | 2024-03-11T23:58:28Z |
| format | Article |
| id | doaj.art-cdf08a963cb54b61971f2b92f5a37fef |
| institution | Directory Open Access Journal |
| issn | 2353-7779 |
| language | English |
| last_indexed | 2024-03-11T23:58:28Z |
| publishDate | 2023-03-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Production Engineering Archives |
| spelling | doaj.art-cdf08a963cb54b61971f2b92f5a37fef2023-09-18T06:33:41ZengSciendoProduction Engineering Archives2353-77792023-03-012911610.30657/pea.2023.29.1Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acidKojnoková Tatiana0Nový František1Markovičová Lenka2Harea Evghenii3University of Žilina, Department of Materials Engineering, Univerzitná 8215/1, 010 26Žilina, Slovak republicUniversity of Žilina, Department of Materials Engineering, Univerzitná 8215/1, 010 26Žilina, Slovak republicUniversity of Žilina, Department of Materials Engineering, Univerzitná 8215/1, 010 26Žilina, Slovak republicTomas Bata University, Centre of Polymer Systems, tř. Tomáše Bati 5678, 760 01Zlín, Czech republic; Tel.: + 421 41 513 2632This paper deals with changes in selected properties of composite material and surface degradation after exposure to an acidic environment. A carbon fiber-reinforced composite (CFRP) produced from prepregs was tested. The weight change, micro-hardness, and surface degradation of the CFRP composite made of cured pre-impregnated laminates were evaluated in this study. Material consisting of a DT121R epoxy resin matrix with high reactivity and high viscosity, with two reinforcing carbon fabrics layers, is characterized by a low value of tensile strength. Evaluation of changes in the material properties was performed before and after exposure to specific environmental conditions, which are achieved by using a chemical solution of 15% H2SO4 at various temperatures. Subsequently, the effect of 15% H2SO4 at various temperatures on the material properties was monitored. The specimens were immersed in the solution for up to 3 and 6 weeks at the temperatures of 23°C, 40°C, and 60°C. It was found out, that the degradation of the composite material is conditioned by the aging of the epoxy resin (matrix). Carbon fibers (reinforcement) are relatively stable. The weight change, micro-hardness, and surface quality depend on the time of exposure to acidic solution and temperature. The micro-hardness tests show a significant influence on exposure time. The biggest changes in weight change and surface quality of the CFRP composite were observed after exposure at the temperature of 60°C.https://doi.org/10.30657/pea.2023.29.1carbon fabricsepoxy resinmicro-hardnessweight changesurface quality |
| spellingShingle | Kojnoková Tatiana Nový František Markovičová Lenka Harea Evghenii Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid Production Engineering Archives carbon fabrics epoxy resin micro-hardness weight change surface quality |
| title | Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid |
| title_full | Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid |
| title_fullStr | Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid |
| title_full_unstemmed | Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid |
| title_short | Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid |
| title_sort | evaluation of selected properties and surface quality of cured pre impregnated carbon fiber fabrics after exposure to sulphuric acid |
| topic | carbon fabrics epoxy resin micro-hardness weight change surface quality |
| url | https://doi.org/10.30657/pea.2023.29.1 |
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