Flame retardancy of water‐based intumescent coatings with etherified melamine–formaldehyde and polyvinyl acetate copolymer hybrid resin

2020 ◽  
Vol 137 (31) ◽  
pp. 49279
Author(s):  
Chih‐Shen Chuang ◽  
Chieh‐Ying Wu ◽  
Kuang‐Chong Wu ◽  
Horn‐Jiunn Sheen
Keyword(s):  
Flame Retardancy ◽  
Polyvinyl Acetate ◽  
Melamine Formaldehyde ◽  
Hybrid Resin ◽  
Intumescent Coatings ◽  
Water Based ◽  
Acetate Copolymer

scholarly journals A chain is no stronger than its weakest link: Weathering resistance of water-based intumescent coatings for steel applications

2020 ◽  
pp. 073490412096106
Author(s):  
Lars-Hendrik Daus ◽  
Bernhard Schartel ◽  
Volker Wachtendorf ◽  
Rolf Mangelsdorf ◽  
Manfred Korzen
Keyword(s):  
Polyvinyl Acetate ◽  
Water Soluble ◽  
Weakest Link ◽  
Intumescent Coatings ◽  
Water Based ◽  
Water Soluble Substance ◽  
A Chain ◽  
New Generation ◽  
Steel Substrates ◽  
Weathering Resistance

A systematic approach was used to investigate the weathering-induced degradation of a common water–based intumescent coating. In this study, the coatings are intended for humid indoor applications on steel substrates. The coating contains ammonium polyphosphate, pentaerythritol, melamine, and polyvinyl acetate. By replacing each ingredient with a less water-soluble substance, the most vulnerable substances, polyvinyl acetate and pentaerythritol, were identified. Furthermore, the weathering resistance of the system was improved by exchanging the ingredients. The coatings were stressed by artificial weathering tests and evaluated by fire tests. Thermogravimetry and Fourier-transform infrared spectroscopy were used to study the thermal decomposition. This study lays the foundation for the development of a new generation of water-based intumescent coatings.

Role of montmorillonite in flame retardancy of ethylene–vinyl acetate copolymer

2006 ◽  
Vol 91 (3) ◽  
pp. 593-599 ◽  
Author(s):  
Andrea Szép ◽  
András Szabó ◽  
Nikoletta Tóth ◽  
Péter Anna ◽  
György Marosi
Keyword(s):  
Vinyl Acetate ◽  
Flame Retardancy ◽  
Ethylene Vinyl Acetate ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Facile fabrication, mechanical property and flame retardancy of aerogel composites based on alginate and melamine-formaldehyde

Polymer ◽  
2019 ◽  
Vol 181 ◽  
pp. 121783
Author(s):  
Xin-Lei Li ◽  
Yan-Rong He ◽  
Zi-Ming Qin ◽  
Ming-Jun Chen ◽  
Hong-Bing Chen
Keyword(s):  
Mechanical Property ◽  
Flame Retardancy ◽  
Melamine Formaldehyde ◽  
Facile Fabrication

scholarly journals Waterborne Intumescent Coatings Containing Industrial and Bio-Fillers for Fire Protection of Timber Materials

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 757 ◽  
Author(s):  
Abderrahman Aqlibous ◽  
Svetlana Tretsiakova-McNally ◽  
Talal Fateh
Keyword(s):  
Wood Sample ◽  
Rice Husk Ash ◽  
Thermal Flux ◽  
Back Surface ◽  
Cone Calorimetry ◽  
Protective Properties ◽  
Intumescent Coatings ◽  
Water Based ◽  
Effective Heat Of Combustion ◽  
Wood Surfaces

Flammability and combustion of softwood treated with intumescent coatings were studied in the present work. The formulations applied onto wood surfaces contained different ratios of industrial fillers, titanium dioxide TiO2 and aluminium trihydroxide Al(OH)3, and/or bio-fillers, eggshell and rice husk ash. Combustion behaviours of unprotected and protected wood samples have been examined with the aid of cone calorimetry performed under the varied levels of thermal flux ranging from 30 to 50 kW/m². The char residues obtained after the completion of cone calorimetry test at 40 kW/m² were analysed by the Raman spectroscopy. The fire protective properties of the studied coatings were strongly influenced by the nature of the fillers as well as by the intensity of thermal irradiance. The incorporation of bio-based fillers into the water-based intumescent formulations significantly improved fire resistance of wood substrates. For example, at 30 kW/m², the Effective Heat of Combustion was reduced by more than 40%, whilst the average Peak to Heat Release Rate had dropped from 193.2 to 150.3 kW/m² for the wood sample protected with the formulation incorporating two industrial and two bio-fillers. Moreover, an application of the studied coatings resulted in a notable reduction of the back surface temperature of the wood specimens.

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