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Properties and Testing

Organic coatings have been subjected to testing by a wide range of methods. Stimulated by European standardisation, it may be expected that consensus on test methods and requirements will grow in the forthcoming years. Here we will con- [Pg.234]

Bassi and Davies [7] have described a method for testing carbon-dioxide permeation through a ceramic tile coated with the material under study. The carbon-dioxide resistance may be expressed in various units, of which the equivalent air thickness is most commonly used. An empirical criterion is that a coating should have the same resistance to COj transport as 50 m of still air. A wide range of organic coatings (plus a silicate and a polymer-modified cementitious coating) was tested. [Pg.235]

An interesting method to demonstrate the density or openness to water vapour was recently published by Vogelsang and co-workers [llj. They prepared mortar specimens with embedded steel electrodes following Tritthart and Geymeyer [12]. [Pg.235]

The sjjedmens were either wet or dry, then coated with two types of coating and together with uncoated specimens, exposed in either dry or wet environment. [Pg.235]

The resistance measured between the electrodes indicated a strong change of resistivity as a function of time, providing information on the rate of evaporation or water uptake from or by uncoated specimen or through the coatings. It was found that such resistivity and moisture changes occurred most rapidly in un- [Pg.235]

Refractory materials, in addition to their resistance to heat, should also behave appropriately with other environmental factors that are encountered in their service life. These factors are mechanical and thermal stresses corrosion from solids, liquids, and gases and gaseous diffusion. Different refractory products are designed and manufactured to meet the required properties useful for a particular application. After their manufacture, the products are tested to ascertain their properties. In this chapter, the various properties required for refractories are discussed along with the tests conducted to determine those properties. [Pg.367]

In ladle metallurgy, alloying addihons are done in the ladle itself. Such ladles are called ladle metallurgical furnaces (LMF). The refractories making up these furnaces should be able to resist the alloying operations. Sometimes, these ladles will have to be reheated. [Pg.368]

In processing nonmetals, the property requirements of the refractories are entirely different from those of iron and steelmaking. For example, in the extraction of aluminum, the temperature requirements are much lower. But, there is a problem with penetration of the refractory by molten aluminum. Thus, the refractory ne s to be nonwetting to liquid aluminum. This can be achieved by the addition of certain additives to the refractory material during its manufacture. [Pg.368]

Another application of refractories is in hydrocarbon industries, such as in oil and gas industries. The property requirements for refractories here are different from those of metal industries. The temperature requirements are lower, but the refractories should be abrasion resistant to the flow of high velocity particles. The refractories also should conserve heat energy during conversion processes by having thermal conductivity within a certain limit. [Pg.368]

Glass making is another important industry in which refractories are used. Here, liquid glass will be in constant contact with the refractory material. Hence, the refractory should be nonporous. Fused refractories are used for making glass tanks. [Pg.368]


Other Properties and Tests. The other physical and chemical properties of porcelain enamels can be evaluated as shown below ... [Pg.218]

DESIGN, PROPERTIES, AND TESTING OF POLYMER STANDARDS SERVICE SIZE EXCLUSION CHROMATOGRAPHY (SEC) COLUMNS AND OPTIMIZATION OF SEC SEPARATIONS... [Pg.267]

Typical products distribution, and selectivity profiles were similar to what was reported in the earlier publication (1). The reaction network is shown in Scheme 1. The catalyst properties and test data are given in Table 1. [Pg.72]

Marshall, A., Explosives Vol. 2, Properties and Tests. Churchill, London, 2nd ed. 1917. [Pg.106]

Bayer Lustran 31-2060, physical properties and test methods, l 440t Bayer process, 2 348 11 624, 635 ... [Pg.90]

P. Kilz, Design, Properties and testing of polymer standards service size Exclusion chromatography (SEC) columns and optimization of SEC separations, in Column Handbook for Size Exclusion Chromatography, C.-s. Wu, ed.. Academic Press, San Diego, CA, 1999, p. 267. [Pg.503]

KL) Anon, "Military Explosives", TM 9-1300-214/TO 11A-1-34 (1967). Chapter 5. Properties and Tests of High Explosives Sensitivity to Frictional Impact (pp 5 1 to 5-3) Sensitivity to Friction (5 3 to 5-6) Sensitivity to Frictional Impact (5-6) Sensitivity to Heat and Spark, which includes Explosion Temperature Test (5-6 to 5-9) Sensitivity to Initiation (5-9) Stability Tests, which include 75° International Test, 100° Heat Test, Vacuum Stability Test and Potassium Iodide—Starch Test (5 9 to 5-15) Brisance Tests which include Sand Test, Plate Dent Test and Fragmentation Test (5 15 to 5-18 and Fig 5 13 on p 5-19) Initiating Value (5-18 5-20) Sympathetic Detonation (5-20 to 5-21) Power which includes Heat of Explosion Test, Ballistic Pendulum Test and Trauzl Lead Block Test (5-21. to 5-24) Blast Effect (5-24 to 5-27) Cratering Effect (5-28 5 29) and Munroe-Neumann Effect (5-29 to 5 35)... [Pg.353]

EXAMINATION OF SOME COMMERCIAL AND MILITARY DYNAMITES AS DESCRIBED IN US MILITARY SPECIFICATIONS, AMENDMENTS AND ENGINEERING CHANGE ORDERS Dynamites (Commercial) (Used for Military Purposes). Their, compositions and some of the properties and tests are listed in Specification MIL-D-60365 (MU), 25 Feb 1966 and in AMENDMENT 1, 15 Nov I968... [Pg.538]

Plastic coating materials have been exposed to all lands of performances and environments to meet the many different requirements that exist in the many different applications. Included are corrosion and chemical resistant, fire retardant or non-flammable, strippable, heat resistant, electrical insulation, and others reviewed above (Chapter 2). What follows is information that highlight some of the properties and tests that influence the performance of coatings. [Pg.392]

Marshall, Arthur, Explosives, Their History, Manufacture, Properties and Tests, P. Blaldston s Sons and Co., Philadelphia, Pa., 1932,... [Pg.164]

Foaming properties can be quantitatively related to surfactant chemical structure, surfactant physical properties, and test conditions using the technique of multiple correlation analysis.(11) The current studies were restricted to linear correlation equations to permit the analyses to be performed on a small microcomputer. While non-linear equations having higher correlation coefficients than obtained herein can be developed, theoretical insights are often limited due to the complexity of the various terms of such equations. The quality of the correlations were assessed using the correlation coefficient (r ) criteria of Jaffe (12)... [Pg.185]

Ferrous Compounds. — The preparation, properties, and tests of ferrous compounds are shown by the... [Pg.320]

Foam Properties and Testing Methods. In general, most physical properties of foams, both flexible and rigid, are proportional to the foam density. Therefore, at all times, the first physical property to be determined is foam density. Foam density can be calculated fi om the following equation ... [Pg.49]


See other pages where Properties and Testing is mentioned: [Pg.269]    [Pg.271]    [Pg.273]    [Pg.275]    [Pg.277]    [Pg.279]    [Pg.281]    [Pg.283]    [Pg.285]    [Pg.287]    [Pg.289]    [Pg.291]    [Pg.293]    [Pg.295]    [Pg.297]    [Pg.299]    [Pg.301]    [Pg.303]    [Pg.563]    [Pg.718]    [Pg.401]    [Pg.283]    [Pg.893]    [Pg.316]    [Pg.21]    [Pg.378]    [Pg.384]    [Pg.398]    [Pg.47]    [Pg.615]   


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Properties and Tests

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