Study on formula of styrene acrylic emulsion intumescent flame retardant coating

doi:10.16265/j.cnki.issn1003-3033.2017.08.007

Abstract

Abstract: In order to investigate the relationships between components of the styrene-acrylic emulsions based intumescing flame retardant coating and make best use of flame retardant coating, thermo gravimetric analyses were made for a basic formula of coating. The role of each component was determined by measuring the heating carbon layer inflation height. Finally, the basic formula was optimized. The results show that the diammonium phosphate and pentaerythritol are removed by ammonia and water at 110-238 ℃, that ammonium metaphosphate and phosphoric acid cross-link with pentaerythritol and form a carbon layer, that at 250-380 ℃, gas is produced by decomposition of melamine, and then it causes the carbon layer to foam and form a porous foaming carbon layer, which is a good flame retardant coating, that in this formula, pentaerythritol (carbonizing agent) and diammonium phosphate (catalyst) act as carbon sources, melamine as a gas source, and styrene acrylic emulsion as a binder, and that the continued ratio of styrene acrylic emulsion to diammonium phosphate to pentaerythritol to melamine in the optimized formula is 2.82: 11.04: 6.00:3.06.

Key words: intumescent flame retardant, flame retardant process, carbon source, gas source, optimized formula

CLC Number:

X937
TQ637

DU Wuqing, BI Jingyi, LI Min, LIU Yingyan, HUANG Zhiyong, LIN Chuhong. Study on formula of styrene acrylic emulsion intumescent flame retardant coating[J]. China Safety Science Journal, 2017, 27(8): 38-43.

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