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2024 , Vol. 54 >Issue 3: 8 - 14

DOI: https://doi.org/10.12020/j.issn.0253-4312.2023-302

Research & Development

Effect of Epoxy Resin/Polyamide Ratio on Fire and Smoke Suppression Properties of Intumescent Fire Retardant Coatings for Steel Structure

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  • 1. Hunan Tieyuan Civil Engineering Testing Co., Ltd., Changsha 410075，China； 

    2. School of Civil Engineering，Central South University，Changsha 410075，China

Online published: 2024-03-01

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Abstract

In order to enhance the fire and smoke suppression properties of fire retardant coatings for steel structure，the epoxy resin（EP）/polyamide resin（PA） system was used as the film-forming polymer to prepare intumescent fire retardant coatings. The effects and regularities of EP/PA ratio on the fire and smoke suppression properties of the intumescent fire retardant coatings for steel structure were systematically analyzed by cone heater，smoke density tester，thermogravimetric analysis（TG） and scanning electron microscopy（SEM）. The results showed that the fire and smoke suppression properties were closed related to the ratio of EP/PA. When the mass ratio of EP/PA was 3∶2，the obtained coating could form more phosphorus-containing cross-linking structures during combustion，showing optimal fire， smoke suppression and char formation effects. The residual carbon rate of the coating at 800 ℃

Key words： intumescent fire retardant coatings for steel structure; epoxy resin; polyamide resin; fire protection; smoke suppression

Cite this article

HUANG D R, YAN L, LI Y, et al . Effect of Epoxy Resin/Polyamide Ratio on Fire and Smoke Suppression Properties of Intumescent Fire Retardant Coatings for Steel Structure[J]. Paint & Coatings Industry, 2024 , 54(3) : 8 -14 . DOI: 10.12020/j.issn.0253-4312.2023-302

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