Comparative study of fire-resistant coatings based on high and low molecular weight tannins

Ramı́rez, Jesús; Berrio, María E.; Díaz‐Gómez, Andrés; Montoya, Luis Felipe; Jaramillo, Alberto; Montalba, C.; Fernández, Katherina; Medina, Carlos; Meléndrez, Manuel

doi:10.1007/s11998-021-00532-7

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…The flame-retardant coating containing higher-molecular-weight tannic acid was more intumescent. Nonetheless, the coating materials composed of low-molecular-weight tannic acid showed a higher carbonization index, less mass loss, and better flame-retardant efficiency [ 55 ].…”

Section: Chemical Composition and Physical Micromorphology Of Flame-r...mentioning

confidence: 99%

Comprehensive Review of Recent Research Advances on Flame-Retardant Coatings for Building Materials: Chemical Ingredients, Micromorphology, and Processing Techniques

2023

Molecules

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Developing fire-retardant building materials is vital in reducing fire loss. The design and preparation of novel fire-retardant coatings merely require the adhesion of flame retardants with high fire-retardant characteristics on the surface, which is significantly more economical than adding excessive amounts of flame retardants into bulk building materials. Meanwhile, fire-retardant coating has excellent performance because it can block the self-sustaining mechanisms of heat and mass transfer over combustion interfaces. In recent years, research of fire-retardant coatings for building materials has been subject to rapid development, and a variety of novel environmentally benign fire-retardant coatings have been reported. Nonetheless, as the surface characteristics of various flammable building materials are contrastively different, selecting chemical ingredients and controlling the physical morphology of fire-retardant coatings for specific building materials is rather complicated. Thus, it is urgent to review the ideas and preparation methods for new fire-retardant coatings. This paper summarizes the latest research progress of fire-retardant building materials, focusing on the compositions and performances of fire-retardant coatings, as well as the principles of their bottom-up design and preparation methods on the surface of building materials.

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Section: Chemical Composition and Physical Micromorphology Of Flame-r...mentioning

confidence: 99%

Comprehensive Review of Recent Research Advances on Flame-Retardant Coatings for Building Materials: Chemical Ingredients, Micromorphology, and Processing Techniques

2023

Molecules

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“…[ 35 ] TA contains numerous hydroxyl groups in its polyphenolic structure, which provide hydrogen bonding capabilities and H 2 O upon dehydration. [ 36 ] Additionally, its aromatic rings can act as scavengers for radical oxygen and a source of char, both of which are elements of flame retardants. [ 37 ] TA has previously been used as an additive for flame retarding poly(ethylene terephthalate) and poly(lactic acid).…”

Section: Introductionmentioning

confidence: 99%

Bio‐Sourced Intumescent Nanocoating

et al. 2022

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New Sustainable Intumescent Coating Based on Polyphenols Obtained from Wood Industry Waste

Montoya,

Flores,

Ramírez

et al. 2024

Coatings

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The global proliferation of Pinus radiata, known for its rapid growth and wood density, has led to an environmental challenge—significant waste production, especially bark, without a clear valorization route. This waste poses ecological concerns, and despite the crucial role of forest resources in structural applications, their limited fire resistance requires the use of coatings. However, traditional coatings lack an eco-friendly footprint. Addressing this challenge, this study aims to develop an intumescent coating with tannins extracted from waste bark, offering a sustainable alternative. This not only repurposes waste on a global scale but also aligns with the imperative for environmentally friendly materials, contributing to sustainable practices in the construction and wood treatment industry. This study achieved an eco-friendly FRR15 (fire resistance ratio 15) fire resistance classification with a 15% equivalence of low-molecular-weight tannins, presenting a sustainable alternative to commercial products. Characterization showed low-molecular-weight tannins comparable to conventional charring agents, with high hydroxyl content and oil absorption, while high-molecular-weight tannins exhibited lower viability. A reference coating achieved FRR30 fire resistance, aligning with commercial strength. The mechanical properties of tannin-based coatings matched commercial standards, with increased abrasion resistance and adhesion and decreased flexibility. Intumescent coatings with higher tannin content significantly reduced wood substrate charring and mass loss in flame response assessments.

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Comparative study of fire-resistant coatings based on high and low molecular weight tannins

Cited by 3 publications

References 31 publications

Comprehensive Review of Recent Research Advances on Flame-Retardant Coatings for Building Materials: Chemical Ingredients, Micromorphology, and Processing Techniques

Comprehensive Review of Recent Research Advances on Flame-Retardant Coatings for Building Materials: Chemical Ingredients, Micromorphology, and Processing Techniques

Bio‐Sourced Intumescent Nanocoating

New Sustainable Intumescent Coating Based on Polyphenols Obtained from Wood Industry Waste

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