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fire retardant gel wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 history 2 mechanism of retardation 3 uses 4 references 5 external links toggle the table of contents fire retardant gel 1 language العربية edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from fire retardant gel superabsorbent polymer mixture fire retardant gel protects a person s hand from a burning fuel fire retardant gels are superabsorbent polymer slurries with a consistency almost like petroleum jelly 1 fire retardant gels can also be slurries that are composed of a combination of water starch and clay 2 used as fire retardants they can be used for structure protection and in direct attack applications against wildfires 3 4 fire retardant gels are short term fire suppressants typically applied with ground equipment 5 they are also used in the movie industry to protect stunt persons from flames when filming action movie scenes 6 7 history edit the practical use of gels was limited until the 1950s as advances in copolymerization techniques led to reproducible batchwise preparation of swellable resins with uniform cross linking 8 this technology was later used in the development of a substantially continuous adherent particulate coating composition of water swollen gelled particles of a crosslinked water insoluble water swellable polymer 9 the water absorbent polymers in fire retardant gels are similar to those used in diapers 10 mechanism of retardation edit the polymer in gels soaks up hundreds of times its weight in water creating millions of tiny drops of water surrounded by and protected by a polymer shell the result is a bubblet or a drop of water surrounded by a polymer shell in contrast to a bubble which is air surrounded by liquid as the gel and water are sprayed onto an exposed surface millions of tiny bubblets are stacked one on top of another the stacking of the water bubblets form a thermal protective blanket over the surface to which it is applied in order for the heat of the fire to penetrate the protected surface it must burn off each layer of the gel bubblets coating each layer holds the heat away from the next layer of bubblets beneath the polymer shell of each bubblets and their stacking significantly prevent water evaporation the stacking of the bubblets is similar to aspirated fire fighting foam or compressed air foam systems except that bubblets are water filled whereas foam bubbles are only filled with air due to the high specific heat of water it requires more energy to raise the temperature of water than air therefore water filled bubblets will absorb more heat than the air filled foam bubbles which are more effective for vapor suppression when gel is applied to a surface such as an exterior wall the water filled bubblets can absorb much of the heat given off by the fire thereby slowing the fire from reaching the wall gels can provide thermal protection from fire for extended periods even at 3 500 f 1 930 c depending on the fire conditions applied fire retardant gels offer fire protection for periods of 6 to 36 hours 11 after the retained water is completely evaporated from a gel fire resistance is lost but can be restored by re wetting the surface if gel material is still adherent 3 uses edit fire retardant gels create a fire protective gel coating that completely repels flaming embers and is extremely effective in cases of emergency in protecting structures from the flame fronts typical of most wildfires 12 during a fire in the black hills national forest nearly all homes coated with a slimy gel were saved while dozens of houses nearby burned to the ground 13 certain supplemental fire protection insurance may include the application of fire retardant gel to homes during wildfire claimed to work best when applied hours before a fire approaches gel is applied using specially designed trucks by private firms however danger may be high and private firms may interfere with fire efforts in response to such a concern sam digiovanna chief of firebreak response program a private response team stated if whoever is running the fire thinks it s too dangerous to go into a particular area we don t go into that area 14 these gels are useful when filming scenes in which it is desired to give the illusion that someone is on fire to do so the gel is applied to an area of the body next a fuel is placed on top of the gel when ready to film the scene the fuel is lit on fire the gel insulates the person from the energy released from the burning fuel the energy from the burning fuel goes into the gel but not the stunt person thus the stunt person is protected from being burned 6 7 references edit the associated press october 13 2007 firefighters say gel works but don t expect rush to stockpile it us 8834750 glenn gregory m starch based fire retardant published 2013 04 26 1 2 cdf evaluation letter of barricade ii gel pdf january 24 2007 archived from the original pdf on 2016 03 03 retrieved 2013 05 22 udsa forest service specification for water enhancers gels for wildland firefighting pdf june 1 2007 retrieved 2008 11 24 after the fire cleaning up fire retardant and fire suppressants pdf july 28 2013 retrieved 2020 10 01 1 2 howder collin r groen kyle d kuntzleman thomas s 2010 08 09 jce classroom activity 107 and the oscar goes to a chemist journal of chemical education 87 10 1060 1061 bibcode 2010jched 87 1060h doi 10 1021 ed900013z 1 2 kuntzleman thomas s mork dakota j norris levi d maniére spencer christopher d 2013 05 29 creating and experimenting with fire gel an inexpensive and readily prepared insulating material journal of chemical education 90 7 947 949 bibcode 2013jched 90 947k doi 10 1021 ed3006506 us 2810716 markus richard l batchwise copolymerization technique published 1957 10 22 us 3229769 bashaw robert n method for controlling the spread of fire published 1966 01 18 barricade ii fire blocking gel msds pdf retrieved 2013 05 22 barricade ii residential faqs retrieved 2013 05 22 protect your home from an approaching wildfire retrieved 2020 10 05 kafka joe associated press writer october 9 2007 new fire retardant gel can save homes physorg com archived from the original on april 6 2008 retrieved 2009 06 11 pierce emmet march 25 2008 insurers adding fire retardant gel as policy option union tribune signonsandiego com retrieved 2009 06 11 james h meidl flammable hazardous materials glencoe press fire science series 1970 external links edit v t e firefighting general by place antarctica australia belgium finland france germany japan south korea united kingdom united states history personnel and organization aircraft rescue and firefighting battalion chief chief fire officer fire captain fire chief station officer retained firefighter fire marshal fire police firefighter assist and search team handcrew special operations firefighter volunteer fire department women in firefighting fire department ranks by country facilities fire academy drill tower fire department list fire lookout tower fire station hose tower apparatus airport crash tender fire command vehicle fire engine fire motorcycle fireboat firefighting apparatus hazardous materials apparatus light and air unit quint rescue vehicle water tender equipment bunker gear escape chair fire blanket fire brigade keys fire bucket fire extinguisher fire hose fire hydrant fire proximity suit fire retardant fire shelter fireman s pole fireman s switch flame retardant fog nozzle halligan bar hazmat suit heat detector hose bridge hydraulic rescue tool jaws of life kelly tool nomex new york roof hook pass device the pig portable water tank rotary saw secure information box self contained breathing apparatus siren smoke detector suction hose thermal imaging camera terminology backdraft barn fire chimney fire dead man zone deluge gun door breaching draft false alarm fire classification fire control fire safety fire triangle fireman s carry firewall flash fire flashover gaseous fire suppression multiple alarm fire rollover stop drop and roll structure fire two in two out ventilation miscellaneous candidate physical ability test fire camp fire engine red fire photography fire protection engineering international firefighters day international organizations international fire marshals association international association of fire chiefs international association of fire fighters list of films muster saint florian world firefighters games world police and fire games wildfires general wildfire emergency management wildfire suppression equipment and tactics aerial firefighting controlled burn driptorch fire flapper fire hose fire lookout tower fire rake fire retardant fire retardant gel fire trail firebreak firefighting apparatus firefighting foam helicopter bucket hose pack mcleod modular airborne firefighting system pulaski wildfire suppression equipment and personnel wildland fire engine wildland water tender personnel fire lookout handcrew helitack hotshot crew smokejumper wildland fire module by location ancient rome australia france united states history california washington lists glossary of wildfire terms list of wildfires see also fire fire protection category commons glossary index outline retrieved from https en wikipedia org w index php title fire retardant_gel oldid 1378738248 categories fire suppression fire suppression agents wildfire suppression fire protection hidden categories articles with short description short description matches wikidata this page was last edited on 5 october 2026 at 23 55 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents fire retardant gel 1 language add topic