Solvent-free intumescent fire protection epoxy coatings

A recent study shows the production of fire protection epoxy coatings with excellent smoke suppression, toxicity reduction, and durability enabled by a micro/nano-structured P/N/Si-containing flame retardant.

The technology of reactive fire protection coatings has become an indispensable part of structural steel engineering. Image source: thommas68 - Pixabay (symbol image).

The development of solvent-free intumescent fire protection epoxy (EP) coatings with excellent durability is an extremely important issue for the protection of storage tanks and structural steels in the coating industry. In a new work, a micro/nano-structured phosphorus/nitrogen/silicon-containing flame retardant (APP@Si) was synthesised by silica nanoparticles-modified ammonium polyphosphate, which was utilised to prepare high-performance intumescent fire protection epoxy resin coatings via a solvent-free method.

Enhanced properties

APP@Si enhanced fire protection, smoke suppression, toxicity reduction, mechanical properties, and durability of solvent-free EP coatings. APP@Si with a 10 wt% loading level endowed solvent-free EP coating (EP/10APP@Si) with a limiting oxygen index value of 32.4 % and a UL-94 V-0 rating. Meanwhile, APP@Si declined the peak heat release rate, smoke factor, and peak CO production rate values of EP/10APP@Si by 77.5 %, 92.6 %, and 56.4 %, respectively, compared with those of pure EP.

The study has been published in Journal of Coatings Technology and Research, Volume 20, Issue 5, September 2023.

Hersteller zu diesem Thema

This could also be interesting for you!