نتایج جستجو برای: Ammonium perchlorate
تعداد نتایج: 28342 فیلتر نتایج به سال:
Contamination of freshwater resources, fresh produce and some processed foods by perchlorate (ClO4 -) is a growing problem in the United States. The anion perchlorate is a naturally occurring as well as an anthropogenic chemical which occurs as salts of ammonium, sodium and potassium. The natural sources of perchlorate include Chilean caliche which is mined for use as a natural source of NaNO3 ...
The oxidant forms the most part of the propellants, and ammonium perchlorate is the most applicable oxidizer in composite solid propellants. Therefore, its thermal decomposition and immunity properties have been a great effect on the propellants properties. The using of polymeric additives is one of the different methods for improving the thermal and immunological properties of ammonium perchlo...
The most promising technologies to remove perchlorate from water are ion exchange and biological reduction. Although successful, ion exchange only separates perchlorate from water; it does not eliminate it from the environment. The waste streams from these systems contain the caustic or saline regenerant solutions used in the process as well as high levels of perchlorate. Biological reduction c...
Abstract: Oxidizer constitute most part of propellant and ammonium perchlorate is most used oxidizer in solid propellant among other oxidizer. Coating is one method to prevent agglomeration of ammonium perchlorate or to create other desirable properties on ammonium perchlorate. Usually type of coating agent and method of coating are selected on base of purpose of coating. Target of coating per...
Ammonium perchlorate is widely used as an oxidizer in the propellant formulation and pyrotechnics According to military standard having high purity and free of impurities such as chlorate . So, the removal of impurities in the production of ammonium perchlorate will be highly regarded. In this paper, the removal of chlorate was investigated by reducing process using metal nanoparticles. In this...
Large scale application of ammonium-perchlorate in the composite rocket fuels defines this compound as an important strategic material. The high content of oxygen in ammonium-perchlorate (54.5% w/w) and the fact that during the thermal decomposition does not yield solid residue, determines its application as an exceptional and irreplaceable oxidative compound in the composite rocket fuels. The ...
Ammonium perchlorate and ammonium perchlorate-hydroxyl terminated polybutadiene simulated combustion
Perchlorates are high melting point inorganic salts that are soluble in water. There are five perchlorate salts that are manufactured in substantial amounts: magnesium, potassium, ammonium, sodium, and lithium perchlorate. Perchlorates are powerful oxidizing agents and at elevated temperatures, they can react explosively. The production volume of ammonium perchlorate far outpaces the other salt...
Composite solid propellants are the major source of chemical energy in space vehicles and missiles. Composite propellants are composed of crystalline oxidizer particles dispersed in polymeric fuel binder. Ammonium perchlorate (AP) is used as the most common oxidizer and hydroxyl terminated polybutadiene (HTPB) as the fuel binder. The ballistics of a composite propellant can be improved by addin...
When an explosive detonates or a propellant or flare burns, consumption of the energetic filler should be complete but rarely is, especially in the presence of large amounts of non-combustible materials. Herein we examine three types of perchlorate-containing devices to estimate their potential as sources of contamination in their normal mode of functioning. Road flares, rocket propellants and ...
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