Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics

The paper presented the works on the effects of fibre reinforcement to the char characteristics of epoxy-based intumescent coating formulations. Reinforcing fibres such as glass fibre and carbon fibre that were manually cut to 10mm in length and chopped fibre strands 3mm length into formulations dev...

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Main Authors: Amir, Norlaili, Ahmad, Faiz, Megat-Yusoff, P.S.M.
Format: Citation Index Journal
Published: Asian Network for Scientific Information 2011
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Online Access:http://eprints.utp.edu.my/5900/1/qredirect.php%3Fdoi%3Djas.2011.1678.1687%26linkid%3Dpdf
http://scialert.net/fulltext/?doi=jas.2011.1678.1687&org=11
http://eprints.utp.edu.my/5900/
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spelling my.utp.eprints.59002017-01-19T08:22:48Z Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics Amir, Norlaili Ahmad, Faiz Megat-Yusoff, P.S.M. TJ Mechanical engineering and machinery The paper presented the works on the effects of fibre reinforcement to the char characteristics of epoxy-based intumescent coating formulations. Reinforcing fibres such as glass fibre and carbon fibre that were manually cut to 10mm in length and chopped fibre strands 3mm length into formulations developed using commercial phosphate-based materials i.e. ammonium polyphosphate (APP), pentaerythritol (PER) and melamine (MEL) as the main ingredients. Five formulations; control (without fibre), glass fibre reinforced, carbon fibre reinforced, hybrid fibre (glass and carbon fibres) reinforced and chopped fibre reinforced were prepared. Powder formulations were grinded using Rocklabs grinder and epoxy-mixed using Caframo mixer, where the maximum speed used was 150rpm and later hand-applied onto primer coated carbon steel substrates at room temperature. Natural drying time at room temperature for the coatings to fully dry was determined. Thermogravimetric analysis (TGA) was conducted on epoxy, hardener and the mixes. Char formation and physical properties were investigated after the samples were exposed to high temperature fire tests up to 400ºC and 800ºC, respectively using electric furnace, Carbolite. Char height, weight, crispness, cell structure were examined and compared. Scanning electron microscopy (SEM) characterizations were also conducted to inspect fibre distribution and condition in the coatings as well as in the chars. The intumescent coatings prepared get fully dried in one to two days with the formulations having epoxy to hardener ratio of 2:1 demonstrated better fire performance char than 1:1 ratio. The results also showed long- carbon and glass fibres promote improved char’s cell structure, height and strength. Though both promotes more char and made the coatings experienced less weight loss, carbon fibre was more superior as it did not degrade. Asian Network for Scientific Information 2011-04-18 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/5900/1/qredirect.php%3Fdoi%3Djas.2011.1678.1687%26linkid%3Dpdf http://scialert.net/fulltext/?doi=jas.2011.1678.1687&org=11 Amir, Norlaili and Ahmad, Faiz and Megat-Yusoff, P.S.M. (2011) Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics. [Citation Index Journal] http://eprints.utp.edu.my/5900/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Amir, Norlaili
Ahmad, Faiz
Megat-Yusoff, P.S.M.
Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
description The paper presented the works on the effects of fibre reinforcement to the char characteristics of epoxy-based intumescent coating formulations. Reinforcing fibres such as glass fibre and carbon fibre that were manually cut to 10mm in length and chopped fibre strands 3mm length into formulations developed using commercial phosphate-based materials i.e. ammonium polyphosphate (APP), pentaerythritol (PER) and melamine (MEL) as the main ingredients. Five formulations; control (without fibre), glass fibre reinforced, carbon fibre reinforced, hybrid fibre (glass and carbon fibres) reinforced and chopped fibre reinforced were prepared. Powder formulations were grinded using Rocklabs grinder and epoxy-mixed using Caframo mixer, where the maximum speed used was 150rpm and later hand-applied onto primer coated carbon steel substrates at room temperature. Natural drying time at room temperature for the coatings to fully dry was determined. Thermogravimetric analysis (TGA) was conducted on epoxy, hardener and the mixes. Char formation and physical properties were investigated after the samples were exposed to high temperature fire tests up to 400ºC and 800ºC, respectively using electric furnace, Carbolite. Char height, weight, crispness, cell structure were examined and compared. Scanning electron microscopy (SEM) characterizations were also conducted to inspect fibre distribution and condition in the coatings as well as in the chars. The intumescent coatings prepared get fully dried in one to two days with the formulations having epoxy to hardener ratio of 2:1 demonstrated better fire performance char than 1:1 ratio. The results also showed long- carbon and glass fibres promote improved char’s cell structure, height and strength. Though both promotes more char and made the coatings experienced less weight loss, carbon fibre was more superior as it did not degrade.
format Citation Index Journal
author Amir, Norlaili
Ahmad, Faiz
Megat-Yusoff, P.S.M.
author_facet Amir, Norlaili
Ahmad, Faiz
Megat-Yusoff, P.S.M.
author_sort Amir, Norlaili
title Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
title_short Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
title_full Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
title_fullStr Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
title_full_unstemmed Study on the Fibre Reinforced Epoxy-based Intumescent Coating Formulations and their Char Characteristics
title_sort study on the fibre reinforced epoxy-based intumescent coating formulations and their char characteristics
publisher Asian Network for Scientific Information
publishDate 2011
url http://eprints.utp.edu.my/5900/1/qredirect.php%3Fdoi%3Djas.2011.1678.1687%26linkid%3Dpdf
http://scialert.net/fulltext/?doi=jas.2011.1678.1687&org=11
http://eprints.utp.edu.my/5900/
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