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Encyclopedia > Antistatic agent

An antistatic agent is a compound used for treatment of materials or their surfaces in order to reduce or eliminate buildup of static electricity generally caused by the triboelectric effect. Its role is to make the surface or the material itself slightly conductive, either by being conductive itself, or by absorbing moisture from the air, so some humectants can be used. The molecules of an antistatic agent often have both hydrophilic and hydrophobic areas, similar to those of a surfactant; the hydrophobic side interacts with the surface of the material, while the hydrophilic side interacts with the air moisture and binds the water molecules. Static electricity is a class of phenomena involving the net charge present on an object; typically referring to charged object with voltages of sufficient magnitude to produce visible attraction, repulsion, and sparks. ... The triboelectric effect is a type of contact electrification in which certain materials become electrically charged after coming into contact with another different material, and are then separated. ... En [ [ ciencia ] ] y [ [ ingeniería ] ], los conductores son los materiales de los cuales contenga las cargas movibles [ [ electricidad ] ]. Cuando una diferencia potencial eléctrica se impresiona a través de puntos separados en un conductor, las cargas móviles dentro del conductor se fuerzan para moverse, y una corriente el... Dew on a spider web Moldy bread Moisture generally refers to the presence of water, often in trace amounts. ... A humectant is a hygroscopic substance that is used as a food additive. ... The adjective hydrophilic describes something that likes water (from Greek hydros = water; philos = friend). ... In chemistry, hydrophobic or lipophilic species, or hydrophobes, tend to be electrically neutral and nonpolar, and thus prefer other neutral and nonpolar solvents or molecular environments. ... Surfactants are wetting agents that lower the surface tension of a liquid, allowing easier spreading, and lower the interfacial tension between two liquids. ...


Internal antistatic agents are designed to be mixed directly into the material, external antistatic agents are applied to the surface.


Common antistatic agents are based on long-chain aliphatic amines (optionally ethoxylated) and amides, quaternary ammonium salts (e.g., behentrimonium chloride or cocamidopropyl betaine), esters of phosphoric acid, polyethylene glycol esters, or polyols. Indium tin oxide can be used as transparent antistatic coating of windows. In chemistry, non-aromatic and non-cyclic (acyclic) organic compounds are called aliphatic. ... The general structure of an amine Amines are organic compounds and a type of functional group that contain nitrogen as the key atom. ... Ethoxylation is a chemical process in which ethylene oxide (IUPAC name: 1,2-epoxyethane) is added to fatty acids in order to make them more soluble in water. ... Amide functional group Amides possess a conjugated system spread over the O, C and N atoms, consisting of molecular orbitals occupied by delocalized electrons. ... Quaternary ammonium cation. ... Behentrimonium chloride Behentrimonium chloride, also known as docosyltrimethylammonium chloride or BTAC-228, is an irritating, toxic, and slightly flammable yellow waxlike organic compound with chemical formula CH3(CH2)21N(Cl)(CH3)3 , used as an antistatic agent and a disinfectant. ... Cocamidopropyl betaine (CAPB) is a zwitterionic surfactant with a quaternary ammonium cation in its molecule. ... A carboxylic acid ester. ... Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is an inorganic mineral acid having the chemical formula H3PO4. ... Polyethylene glycol (PEG) and polyethylene oxide (PEO) are polymers composed of repeating subunits of identical structure, called monomers, and are the most commercially important polyethers. ... The name polyols refers to chemical compounds containing multiple hydroxyl groups. ... Indium tin oxide (ITO) is a mixture of indium(III) oxide (In2O3) and tin(IV) oxide (SnO2), typically 90% In2O3, 10% SnO2 by weight. ...


Conductive polymers are another option. PEDOT:PSS is used by Bayer as an antistatic coating under name Baytron P in several applications, eg. in some Agfa photographic films. A conductive polymer is an organic polymer semiconductor, or an organic semiconductor. ... Bayer AG (IPA pronunciation //) (ISIN: DE0005151005, NYSE: BAY, TYO: 4863 ) is a German chemical and pharmaceutical company founded in 1863. ... PEDOT-PSS PEDOT:PSS or Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) is a polymer mixture of two ionomers. ... Agfa was a company which produced a range of photographic products including films, photographic papers and cameras. ... This article or section does not cite its references or sources. ...


Antistatic agents are also added to some military jet fuels, to impart electrical conductivity to them and avoid buildup of static charge that could lead to sparking igniting the fuel vapors. Stadis 450, with dinonylnaphthylsulfonic acid (DINNSA) as the active ingredient, is the agent added to some distillate fuels, solvents, commercial jet fuels, and to the military JP-8 fuel. Stadis 425 is a similar compound, for use in distillate fuels and solvents. Jet fuel is a type of aviation fuel designed for use in jet-engined aircraft. ... Dinonylnaphthylsulfonic acid (DINNSA) is an organic chemical, an aryl sulfonic acid. ... An aviation fuel truck. ...


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