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He invented fire-fighting foam, which was successfully tested in experiments in 1902 and 1903. [1] In 1904 Loran patented his invention, and developed the first foam extinguisher the same year. [8] The original foam was a mixture of two powders and water produced in a foam generator.
This air to foam solution ratio produces a wet, quick draining finished foam that will quickly knockdown flame and reduce fire compartment temperature. This ratio also allows for a higher relative foam solution (liquid) flow rate to help maintain the highest levels of firefighter safety possible.
They are components of fire-fighting foam. [1] Fluorosurfactants (PFAS) reduce surface tension by concentrating at the liquid-air interface due to the lipophobicity of polyfluorocarbons. Chlorofluorocarbons are also perfluorinated compounds, many of which were formerly used as refrigerants until they were implicated in ozone degradation.
The chemical foam extinguisher was invented in 1904 by Aleksandr Loran in Russia, based on his previous invention of fire fighting foam. Loran first used it to extinguish a pan of burning naphtha. [7] It worked and looked similar to the soda-acid type, but the inner parts were slightly different.
PFAS compounds and their derivatives are widely used in many products from water resistant textiles to fire-fighting foam. [ 4 ] [ 1 ] PFAS are commonly found in every American household in products as diverse as non-stick cookware, stain resistant furniture and carpets, wrinkle free and water repellent clothing, cosmetics, lubricants, paint ...
The ubiquity of PFAS is due to the fact that the chemicals are used in thousands of commercial products, from non-stick cookware to menstrual products, toilet paper, and fire-fighting foam. When ...
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