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water gel explosive
A water-gel explosive is a fuel sensitized explosive mixture consisting of an aqueous ammonium nitrate solution that acts as the oxidizer.〔Cook, Melvin A. ''The Science of Industrial Explosives.'' (c)1974, page 14.〕 Water gels that are cap-insensitive are referred to under United States safety regulations as blasting agents. Water gel explosives have a jelly-like consistency and come in sausage-like packing stapled shut on both sides.〔https://www.securesearchinc.com/shop/home.php?cat=361〕
Water-gel explosives represent the majority of the blasting agents used in the commercial market and have almost completely displaced dynamite.〔(Alt.Engineering.Explosives )〕
==Composition==
Water gels usually have many different ingredients. They contain a gelatinizing agent, also known as a thickener, that modifies their consistency, ranging from easily pourable gels to hard solids. Polyvinyl alcohol, guar gum, dextran gums, and urea-formaldehyde resins are the typical gelling agents. Guar, specifically, is a gelling agent used for the aqueous portion of the water gel explosives.〔http://www.freewebs.com/lpumsun/watergelexp.html〕 The primary component of water gels is monomethylamine nitrate. Monomethylamine nitrate is made of methyl methacrylate or MMA, formaldehyde and ammonium nitrate.〔()〕 Water gel explosives are also made of ammonium nitrate, calcium nitrate, aluminum, ethylene glycol and TNT. The proportions of these components vary depending on the desired explosiveness of the water gel.〔http://science.howstuffworks.com/dictionary/chemistry-terms/explosive-info2.htm〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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