OALibJ  Vol.1 No.5 , August 2014
Preparation and Fire Test of Intumescent Powder Coatings
Abstract: New regulations for hazardous air pollutants drove operations to compliant coatings. Powder coatings were the most popular choice. A screening of intumescent powder coatings was carried out comprising binders like thermoplastics as plasticised polyvinylchloride and polypropylene as well as non-cross linked thermosets as polyurethanes. Intumescence was achieved by addition of the intumescent ingredient bicyclopentaerythritol phosphate, by the intumescent combination polyethylene glycol as binder with ammonium polyphosphate and binders comprising intumescent phosphororganic polyesters. The intumescent ingredients and components were characterized by thermogravimetric analysis and described by chemical formulas together with their balances of weights and heats of formation. The electrically loaded powders were sprayed on grounded steel panels and subdued a fire test. The time, until the coated panels reached 500℃, was observed. The panels coated with the plasticised polyvinylchloride plus bicyclopentaerythritol phosphate and those protected by the polyurethane comprising polyethylene glycol and ammonium polyphosphate delayed the period of time, until 500℃ were reached, significantly and were equal in efficiency with the reference, the commercial water borne intumescent varnish.
Cite this paper: Horacek, H. (2014) Preparation and Fire Test of Intumescent Powder Coatings. Open Access Library Journal, 1, 1-15. doi: 10.4236/oalib.1100564.

[1]   Herr, C. (2007) Equipment Considerations When Converting to a Compliant Coating. Metal Finishing, 40-43.

[2]   Othmer, K. (1982) Encyclopedia of Chemical Technology. 3rd Edition, Vol. 19, Powder Coatings, 1-26.

[3]   Othmer, K. (2007) Encyclopedia of Chemical Technology. 5th Edition, Vol. 7, Coating Process, 1-34, Powder, 35-67, Coating Process Spray, 68-76, Coating, 77-95.

[4]   Horacek, H. (2005) Intumeszierende Pulverbeschichtung. EP 1 659 157 A1.

[5]   Leigh and Co. (2002) Coating Composition. WO 02096996 A1.

[6]   Chance and Hunt Lim., Ferro Lim. (2002) Fire Retardant Intumescent Coating. WO 0277110 A1.

[7]   Leigh and Co. (2003) Radiation Curable Intumescent Coatings. WO 03066749 A1.

[8]   Rohm and Haas (2005) Intumeszierende Pulverzusammensetzung und Daraus Hergestellte Beschichtungen. EP 16836-8384 A1.

[9]   Piazza, D., Silveira, D.S., Lorandi, N.P., Birriel, E.J., Scienza, L.C. and Zattera, A.J. (2012) Polyester Based Coatings with Montmorillonite Nanoparticles Applied on Carbon Steel. Progress Inorganic Coatings, 78, 42-46.

[10]   Horacek, H. (2009) Reactions of Stoichiometric Paints. Journal of Applied Polymer Science, 113, 1745-1756.

[11]   Zobel, L. (2005) Enviral and Meeh, mo Metalloberfläche Jg.59 “Pulverbeschichtungen”. 12-14.

[12]   Lucas, H.J., Mitchell Jr., F.W. and Scully C.N. (1950) Cyclic Phosphites of Some Aliphatic Glycols. Journal of the American Chemical Society, 72, 5491-5495.

[13]   Rätz, R. and Sweeting, O.J. (1963) Some Chemical Reactions of 3,9-Dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] Undecane 3,9-Dioxide. The Journal of Organic Chemistry, 28, 1608-1912.

[14]   Horacek, H. and Pieh, St. (2000) The Importance of Intumescent Systems for Fire Protection of Plastic Materials. Polymer International, 49, 1106-1114.<1106::AID-PI539>3.0.CO;2-I