Properties casting

Property Cast polymer Monoaxially oriented Balanced oriented... 

In order that a wax be accepted for use as a desensitizer in an expl compn, it must not only meet the requirements of Specification Ml L-W-20553, it must also be found acceptable in use tests. Such tests include characterization of a wax in the specific expl compn for incorpora-bility, possibility, sensitivity, physical compatibility, flow properties, cast shrinkage, etc. Examples of Army qualificationworkis contained in Refs 63,87,92 99. The qualification test procedures required by the Navy are spelled out in Ref 95. Specification MIL-W-20553D, paragraph 6.4.2 cites NWS TR-1 and TR-2 for qualification of waxes for Composition B and H-6 and D-2, respectively, and WS 13574, OD 45295 and WS 13564, OD45001 for qualification of Compn A-3... 

Hydrogen bromide-catalysed rearrangement of lupenyl acetate affords the olefin (104) which is readily isomerized to (105). Epoxidation of the latter gave the a-epoxide (106), whose structure was confirmed by X-ray analysis. Hydro-boronation of 3/3-acetoxy-30-norlup-19-ene (107) results in addition from the a-face with formation of the 19aH-alcohol (lOS). " The corresponding ketone (109), which undergoes facile epimerization at C-19 in base, was converted into 19aH-lupeol (110), whose spectroscopic properties cast doubt on the recent... 

Property Casting Laminate Casting Laminate Casting Laminate... 

Ferrous A word used to describe all metals in which the main constituent is iron. The word ferrous comes from the Latin word ferrum, meaning iron. Ferrous metals have magnetic properties. Cast iron, wrought iron and steel are all ferrous metals. 

Property Cast PMMA Molding Compound Heat Resistant Molding Compound Impact Modified Molding Compound... 

Property Cast film Monoaxiall y oriented Biaxially oriented... 

Alloy cast irons. Alloy additions are made to cast irons to improve the properties for particular purposes. Alloy cast irons can be used in engineering applications where plain cast iron is unsuitable and may even replace steel for some components such as crankshafts. 

The extraction of characteristics contains the determination of properties and characteristics which describe the casting defect. Within this investigations three different groups of characteristics were determined which include information about the geometry, the distribution of gray values, and the contour of the defects (fig. 9). 

NONDESTRUCTIVE MAGNETIC METHID OF INSPECTION OF THE MECHANICAL PROPERTIES OF CAST STEELS. 1. CONSTRUCTION OF CORRELATION MODELS and II. PRACTICAL APPLICATION OF CORRELATION... 

If one is only interested in the properties of the interface on scales much larger than the width of the intrinsic profiles, the interface can be approximated by an infinitely thin sheet and the properties of the intrinsic profiles can be cast into a few effective parameters. Using only the local position of the interface, effective interface Hamiltonians describe the statistical mechanics of fluctuating interfaces and membranes. 

Alloys with other useful properties can be obtained by using yttrium as an additive. The metal can be used as a deoxidizer for vanadium and other nonferrous metals. The metal has a low cross section for nuclear capture. 90Y, one of the isotopes of yttrium, exists in equilibrium with its parent 90Sr, a product of nuclear explosions. Yttrium has been considered for use as a nodulizer for producing nodular cast iron, in which the graphite forms compact nodules instead of the usual flakes. Such iron has increased ductility. 

Properties Poly(methyl methacrylate) Cast sheet Impact- modified Heat- resistant Alkyd, molded Acrylic poly(vinyl chloride) alloy ... 

The industrial value of furfuryl alcohol is a consequence of its low viscosity, high reactivity, and the outstanding chemical, mechanical, and thermal properties of its polymers, corrosion resistance, nonburning, low smoke emission, and exceUent char formation. The reactivity profile of furfuryl alcohol and resins is such that final curing can take place at ambient temperature with strong acids or at elevated temperature with latent acids. Major markets for furfuryl alcohol resins include the production of cores and molds for casting metals, corrosion-resistant fiber-reinforced plastics (FRPs), binders for refractories and corrosion-resistant cements and mortars. 

Trimethylolethane trinitrate (metriol trinitrate) is not satisfactory as a plasticizer for nitrocellulose, and must be used with other plasticizers such as metriol triacetate. Mixtures with nitroglycerin tend to improve the mechanical properties of double-base cast propellants at high and low temperatures. Metriol trinitrate has also been used in combination with triethylene glycol dinitrate as a plasticizer for nitrocellulose. Its physical properties are Hsted in Table 7 (118-122). 

Table 10. Composition and Properties of Nitrocellulose-Based Cast Propellants...

Some cast (unoriented) polypropylene film is produced. Its clarity and heat sealabiUty make it ideal for textile packaging and overwrap. The use of copolymers with ethylene improves low temperature impact, which is the primary problem with unoriented PP film. Orientation improves the clarity and stiffness of polypropylene film, and dramatically increases low temperature impact strength. BOPP film, however, is not readily heat-sealed and so is coextmded or coated with resins with lower melting points than the polypropylene shrinkage temperature. These layers may also provide improved barrier properties. 

When drawdown is high, the film may be uniaxially oriented and the properties of the final film isotropic. In the manufacture of strapping tape this effect is accentuated. If the cast or quenched film is to be used to feed an orientation tine, additional attention must be given to the amorphous—crystalline nature of the film ia the draw processes so that maximum strength can be achieved and uniform gauge and optical quality maintained. Slot casting is used for the orientation of these resins, polyesters, polyamides, and a variety of others. 

Table 2 Hsts properties of PVF films. Various multilayer cast PVF films have been reported (82). Physical and tensile properties of the film depend on the extent of its orientation (83).

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