Binders definition

Insulation systems were first classified according to the material used, and permissible temperatures were established based on the thermal aging characteristics of these materials. For example. Class B insulation was defined as inorganic materials such as mica and glass with organic binders 130°C was the allowable maximum operating temperature. The present definition of insulation system Class B stipulates that the system be proven. . by experience or accepted tests. .. to have adequate life expectancy at its rated temperature, such life expectancy to equal or... 

Chaikina. The destruction of the binder which we call chalking has been known and feared for a very long time. The definition according to ASTM D 659 is as follows ... 

Conditions of Coalescence. The outcome of the collision of two binder-covered particles is determined by the ratio of the initial kinetic energy of the system and the energy dissipated in the liquid bridge and in the particles. This can be expressed analytically by the definition of a so called Stokes number, St... 

With only small differences in (Is)max the choice of the binder system is influenced by processability, physical properties, and propellant density. Thus, with the polyether binder an Is of 247 is reached with about 14% binder, but with the polyester the same Is is obtained with 11.5% binder, which is a definite disadvantage in terms of processability and mechanical properties. The higher Is with the polybutadiene binder is realized only at high solids loadings, but owing to its lower density, processability is still satisfactory. 

Compared at (Is)max, polyether and polybutadiene propellants have nearly identical densities since the higher density of the polyether binder, P = 1.0 (polybutadiene p 0.9), is offset by the lower solids content [p (NH4CIO4) = 1.95, p (Al) = 2.7]. At lower solids loadings the higher density of the polyether becomes a definite advantage. If nitro-plasticizers are used [p (nitroplasticizer) = 1.4] the 7S maN is shifted to appreciably lower solids loadings, so that the plasticizer is combined preferably with a polyether in order not to lose density. 

Compatibility of TATB PBX with Weapons Materials , PlastOtherMaterExplosProplntsSymp, IIIA (1976) CA 87,87227 (1977) [Reported is the use of Viton-A, Kel-F 800 and Estane 5702-F1 as a binder for TATB contg expl compns. Compatibility tests (the object of the study with stainless steel, V, polyamide film and several sealant/adhesives at 120° for 1 to 4 months revealed no definite reaction. However, it was concluded that the major cause of gas evoln and chemical interaction between expl and test materials is the presence of w]... 

P is the number of polymer molecules of degree of polymerization n, R is the number of radicals found in a volume V, R is the number of polymer radicals with degree of polymerization n found in a volume, V. For other definitions, please use the nomenclature associated with Table 15.2. Noting equation 15.14, the kinetics of polymer degradation are very complex. Only the most simple mechanisms have been thoroughly researched. These simplified reactions presented in Table 15.2 are sometimes zero order, more frequently first order, and infiiequently second order in polymer mass. These simplified rate expressions are typically used to model binder burnout. 

In practice there is a continuous range of coating hardnesses varying from very soft to very hard, and the hardness is determined not only by the binder but by the concentrations of molybdenum disulphide and other solid components. The definition of hardness is also relative to the service contact loads. A coating of intermediate hardness may behave like a hard film under low contact pressures or like a soft film under high contact pressures. As a result, it is very difficult to compare the quoted load-carrying capacity and wear lives of different films tested under different conditions by different research groups. 

Several papers proposing multiple recognition sites for Pgp have been presented in the past. In this work, the pharmacophoric analysis of the dataset shows that the requirements to interact with Pgp are the same for all 129 compounds. Since in our database we have not included known R-site binders and anthracydines, we cannot say definitively that the pharmacophore found represents one of the binding sites that have been described in the literature. Two of the molecules present in the database, verapamil and dipyridamole, are known to bind in the H-site described by Shapiro and Ling [10]. We also cannot definitely state that the pharmacophore defines any functional site within the transporter. Further work, to try to define the location of the corresponding amino acids in a protein homology model, is in progress. 

A number of sets of the Classification Manual are located at a desk near the 14th Street entrance. There is also a complete set of class definitions in loose-leaf binders, arranged in numerical order at the start and close of each business day. Nearby is an important card file, listing the class and subclass of every United States patent (the entries are in pencil). 

The DIN definition of the term colorant includes both dyes and pigments. In contrast to dyes, pigments are practically insoluble in the binder. They consi.st of solid particles generally with a uniform chemical composition and are mainly transition metal oxides, oxide hydrates, sulfides, silicates, sulfates or carbonates (.see Table 5.9-1). 

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