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Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation

As the use of carbon-fiber-reinforced plastic (CFRP) and glass-fiber-reinforced plastic is frequent in the field of construction, a method for measuring FRP resin content is needed. Herein, thermal gravimetric analysis (TGA) was employed to optimize the heat treatment conditions (temperature and tim...

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Autores principales: Kim, Ji Hyun, Song, Bhum Keun, Min, Kyoung Jae, Choi, Jung Chul, Eun, Hwa Seong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696967/
https://www.ncbi.nlm.nih.gov/pubmed/36431667
http://dx.doi.org/10.3390/ma15228182
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author Kim, Ji Hyun
Song, Bhum Keun
Min, Kyoung Jae
Choi, Jung Chul
Eun, Hwa Seong
author_facet Kim, Ji Hyun
Song, Bhum Keun
Min, Kyoung Jae
Choi, Jung Chul
Eun, Hwa Seong
author_sort Kim, Ji Hyun
collection PubMed
description As the use of carbon-fiber-reinforced plastic (CFRP) and glass-fiber-reinforced plastic is frequent in the field of construction, a method for measuring FRP resin content is needed. Herein, thermal gravimetric analysis (TGA) was employed to optimize the heat treatment conditions (temperature and time) for determining the resin content in which only the resin was removed without fiber heat loss. Accordingly, the measurement was performed in 100 °C increments at a resin pyrolysis temperature up to 800 °C with a heat treatment time of 4 h to continuously observe the degree of thermal decomposition of the resin. The thermal decomposition of unsaturated polyester was confirmed at the melting point (350 ℃) regardless of the type of fibers used as reinforcement. In the case of CFRP, most of the resin decomposition occurred at 300 °C. Notably, the resin was removed at a pyrolysis temperature of 400 ℃ and almost no change in weight was observed. However, at a pyrolysis temperature of 500 °C or higher, the thermal decomposition of the fibers occurred partially. The results show that the composite resin was removed within 10 min at a pyrolysis temperature of 400 °C in an air atmosphere when using TGA.
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spelling pubmed-96969672022-11-26 Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation Kim, Ji Hyun Song, Bhum Keun Min, Kyoung Jae Choi, Jung Chul Eun, Hwa Seong Materials (Basel) Article As the use of carbon-fiber-reinforced plastic (CFRP) and glass-fiber-reinforced plastic is frequent in the field of construction, a method for measuring FRP resin content is needed. Herein, thermal gravimetric analysis (TGA) was employed to optimize the heat treatment conditions (temperature and time) for determining the resin content in which only the resin was removed without fiber heat loss. Accordingly, the measurement was performed in 100 °C increments at a resin pyrolysis temperature up to 800 °C with a heat treatment time of 4 h to continuously observe the degree of thermal decomposition of the resin. The thermal decomposition of unsaturated polyester was confirmed at the melting point (350 ℃) regardless of the type of fibers used as reinforcement. In the case of CFRP, most of the resin decomposition occurred at 300 °C. Notably, the resin was removed at a pyrolysis temperature of 400 ℃ and almost no change in weight was observed. However, at a pyrolysis temperature of 500 °C or higher, the thermal decomposition of the fibers occurred partially. The results show that the composite resin was removed within 10 min at a pyrolysis temperature of 400 °C in an air atmosphere when using TGA. MDPI 2022-11-17 /pmc/articles/PMC9696967/ /pubmed/36431667 http://dx.doi.org/10.3390/ma15228182 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Ji Hyun
Song, Bhum Keun
Min, Kyoung Jae
Choi, Jung Chul
Eun, Hwa Seong
Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title_full Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title_fullStr Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title_full_unstemmed Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title_short Optimizing Heat Treatment Conditions for Measuring CFRP and GFRP Resin Impregnation
title_sort optimizing heat treatment conditions for measuring cfrp and gfrp resin impregnation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696967/
https://www.ncbi.nlm.nih.gov/pubmed/36431667
http://dx.doi.org/10.3390/ma15228182
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