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Inhibition materials

It has been found that red lead, litharge and certain grades of metallic lead powder render water alkaline and inhibitive this observation has been confirmed by Pryor . The effect is probably due to a lead compound, e.g. lead hydroxide, in solution. Since, however, atmospheric carbon dioxide converts these lead compounds into insoluble basic lead carbonate, thereby removing the inhibitive materials from solution, these pigments may have only limited inhibitive properties in the absence of soap formation. [Pg.596]

FIGURE 2.7. Depletion of Inhibitor Stability DSC Curve (A) and Isothermal Curves (B) for an Inhibited Material. [Pg.24]

The mechanical and physical properties of the inhibiting material must be fairly similar to those of the propellant in order to minimize the differential expansion. In this respect the use of several layers with possibly different compositions is favorable. With long burning timers (more than 20 sec) the development of a reliable inhibitor poses a fairly difficult problem, especially with end-burning grains. [Pg.366]

The choice of an inhibiting material or inhibitor depends upon several factors such as the type of propellant, cost-effectiveness, and physical and mechanical properties of an inhibitor with special reference to ballistic requirements. The inhibition of propellants is therefore discussed by category of propellant. [Pg.298]

The most commonly used MAO inhibitors include hydrazines, such as iproniazid, Marsilid, Marplan, Niamid, Nardil, Catron also nonhydrazines such as propargylamines, cyclopropylamines, aminopyrazine derivatives, indolealkylamines, and carbolines. MAO-inhibiting materials discussed in this book include yohimbine various tryptamines, especially 5-MeO-DMT and the alpha-methyltryptamines and the various harmala alkaloids. The latter are especially potent inhibitors, but, like yohimibine and the tryptamines, are short-lasting in action (30 minutes to several hours). Some of the commercial MAO inhibitors listed above are effective for several days to several weeks. [Pg.26]

From the above, the following conclusion can be made High power inputs (P/V) are justified only in coalescence inhibited material systems. In other words, the generation of very fine primary gas bubbles in coalescent-prone systems is not economically justified. [Pg.160]

HI. Hahn, H. B., and Albert, A., On the presence of a gonadotropic-inhibiting material in human urine. J. Clin. Endocriml. Metab. 26, 409-415 (1965). [Pg.56]

The first quantitative representation of the mass transfer relationship came from Cooper, Fernstrom and Miller in 1944 [84]. They worked with a vaned disk with 16 radial vanes in three different sizes (scale 1 3) in 1 N sodium sulfite solution and formulated the kia value with the oxygen partial pressure as Ky [kmol 02/m h at], since the oxygen solubility in the sulfite solution was then unknown. The result for this stirrer in a completely coalescence-inhibited material system was ... [Pg.139]

A direct proportionality is expected between k a and e for monodisperse bubble populations in coalescence-inhibited material systems. In fact it was found [617] for three differently sized bubble columns of D = 96 200 300 mm with a perforated plate as sparger (boreholes 0.5 mm in diameter) in the material system 1 N sodium sulfite solution (Cu -catalyzed sulfite method for kbU determination) that ... [Pg.153]

Also, beware of autocatalytic reactions. The examples given in this paper are for non-autocatalytic, uninhibited systems. Autocatalytic or inhibited materials will exhibit different thermal behavior depending on their thermal history. Just being able to recognize these materials is an important part of a hazard evaluation. [Pg.81]

ACIDE CYANHYDRIQUE (French) (74-90-8) Can be self-reactive, forming an explosive mixture with air (flash point 0°F/— 18°C). Unless inhibited, material stored more than 90 days may be hazardous. Heat above 356°F/180°C or contact with alkalis or amines can cause explosive polymerization. Violent reaction with strong oxidizers, acetaldehyde. Solutions containing more than 2—5% water are less stable than dry material. Acid solutions react with ammonia, ferric oxide, halogens, ozone. Attacks some plastics, rubber, and coatings. Water solutions attack carbon steels at room temperatures and stainless steels (especially if stabilized with sulfuric acid) above 176°F780°C. [Pg.24]

Plastics with liquid Cl are the largest class of inhibited materials. [Pg.64]

In view of the aggravation of the problem of global contamination of the environment by engineering and domestic waste, special attention is paid to the elaboration of non-toxic Cl, recycled and biodegradable resins, ecologically friendly methods of salvaging waste and inhibited materials [5-8]. [Pg.82]

Skin packaging is a combination of a pol3mier film sleeve with a bottom liner (cardboard or sheet polymer). The article is placed on the card liner and is wrapped into the inhibited shrinkage sleeve (Fig. 2.55a). The film ends are fixed on the card, which can also be made of an inhibited material. During heating the film shrinks skin tight around the article. Skin packaging is used for small-size machine parts, spares, tools etc. [Pg.159]


See other pages where Inhibition materials is mentioned: [Pg.595]    [Pg.449]    [Pg.381]    [Pg.238]    [Pg.279]    [Pg.49]    [Pg.167]    [Pg.366]    [Pg.210]    [Pg.290]    [Pg.448]    [Pg.39]    [Pg.91]    [Pg.449]    [Pg.15]    [Pg.366]    [Pg.323]    [Pg.447]    [Pg.290]    [Pg.313]    [Pg.226]    [Pg.87]    [Pg.93]    [Pg.135]    [Pg.165]   
See also in sourсe #XX -- [ Pg.293 , Pg.294 , Pg.295 , Pg.296 , Pg.297 ]




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