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Intumescent, Epoxy-Based Flame-Retardant Coatings Based on Poly(acrylic acid) Compositions.
ACS Appl Mater Interfaces. 2020 Apr 22; 12(16):18997-19005.AA

Abstract

Intumescent coatings expand upon exposure to a flame to create a protective char layer between the flame and underlying substrate. Widely used commercially, these coatings are applied notably to steel load-bearing beams, significantly extending their time to failure. Boric acid has proved to be a particularly effective additive in the formulation in these coatings, although regulatory concerns are driving an urgent need for more environmentally friendly additives. We report here the characterization of poly(acrylic acid) (PAA) for its use as a novel material in flame-retardant and intumescent coatings. Thermogravimetric analysis (TGA) and microscale combustion calorimetry (MCC) were performed on the novel flame-retardant additives to evaluate individual degradation mechanisms and heat release rates. Promising compositions were immobilized in an epoxy binder and formulated with other intumescent additives such as ammonium polyphosphate (APP) and melamine (MEL) to evaluate performance in a coating system. These formulations were then evaluated via quantitative cone calorimetry. Particular PAA-containing formulations show peak heat release rates (PHRR) and total heat release (THR) of 283 kW/m2 and 50.5 MJ/m2, respectively, which compare favorably to data for BA-containing systems, specifically PHRR = 229 kW/m2 and THR = 43.1 MJ/m2. Results showed promise and need for further investigation into PAA as a multifunctional additive for use in flame-retardant and intumescent coatings.

Authors+Show Affiliations

Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States.Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States.Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States.Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32227977

Citation

Price, Erik J., et al. "Intumescent, Epoxy-Based Flame-Retardant Coatings Based On Poly(acrylic Acid) Compositions." ACS Applied Materials & Interfaces, vol. 12, no. 16, 2020, pp. 18997-19005.
Price EJ, Covello J, Tuchler A, et al. Intumescent, Epoxy-Based Flame-Retardant Coatings Based on Poly(acrylic acid) Compositions. ACS Appl Mater Interfaces. 2020;12(16):18997-19005.
Price, E. J., Covello, J., Tuchler, A., & Wnek, G. E. (2020). Intumescent, Epoxy-Based Flame-Retardant Coatings Based on Poly(acrylic acid) Compositions. ACS Applied Materials & Interfaces, 12(16), 18997-19005. https://doi.org/10.1021/acsami.0c00567
Price EJ, et al. Intumescent, Epoxy-Based Flame-Retardant Coatings Based On Poly(acrylic Acid) Compositions. ACS Appl Mater Interfaces. 2020 Apr 22;12(16):18997-19005. PubMed PMID: 32227977.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intumescent, Epoxy-Based Flame-Retardant Coatings Based on Poly(acrylic acid) Compositions. AU - Price,Erik J, AU - Covello,James, AU - Tuchler,Andrew, AU - Wnek,Gary E, Y1 - 2020/04/10/ PY - 2020/4/2/pubmed PY - 2020/4/2/medline PY - 2020/4/2/entrez KW - coatings KW - epoxy KW - flame-retardant KW - intumescent KW - passive fire protection KW - poly(acrylic acid) SP - 18997 EP - 19005 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 12 IS - 16 N2 - Intumescent coatings expand upon exposure to a flame to create a protective char layer between the flame and underlying substrate. Widely used commercially, these coatings are applied notably to steel load-bearing beams, significantly extending their time to failure. Boric acid has proved to be a particularly effective additive in the formulation in these coatings, although regulatory concerns are driving an urgent need for more environmentally friendly additives. We report here the characterization of poly(acrylic acid) (PAA) for its use as a novel material in flame-retardant and intumescent coatings. Thermogravimetric analysis (TGA) and microscale combustion calorimetry (MCC) were performed on the novel flame-retardant additives to evaluate individual degradation mechanisms and heat release rates. Promising compositions were immobilized in an epoxy binder and formulated with other intumescent additives such as ammonium polyphosphate (APP) and melamine (MEL) to evaluate performance in a coating system. These formulations were then evaluated via quantitative cone calorimetry. Particular PAA-containing formulations show peak heat release rates (PHRR) and total heat release (THR) of 283 kW/m2 and 50.5 MJ/m2, respectively, which compare favorably to data for BA-containing systems, specifically PHRR = 229 kW/m2 and THR = 43.1 MJ/m2. Results showed promise and need for further investigation into PAA as a multifunctional additive for use in flame-retardant and intumescent coatings. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/32227977/Intumescent_Epoxy_Based_Flame_Retardant_Coatings_Based_on_Poly_acrylic_acid__Compositions_ L2 - https://dx.doi.org/10.1021/acsami.0c00567 DB - PRIME DP - Unbound Medicine ER -
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