Classes of Materials Covered

Description of samples tested, specific test methods used, exposure medium notes, solubility parameters, and other important details are provided. Emphasis is on providing all relevant information so the most informed conclusions and decisions can be made by the user. Over 60,000 individual entries (specific tests) are covered in the database. Classes of materials covered include thermosets, thermosetting elastomers, thermoplastics, and thermoplastic elastomers. Approximately 700 different trade name and grade combinations representing over 130 families of materials are included. Over 3300 exposure environments are represented. 

Intermediate-sized systems are systems that are larger than the molecules we have considered sofar but not so large that they can be considered as approximately infinite. This class of materials covers a broad spectrum of different types of systems, each with its special chemical and physical properties as well as problems when treating them theoretically. 

This review has covered many of the essential features of the physical chemistry of nanocrystals. Rather than provide a detailed description of the latest and most detailed results concerning this broad class of materials, we have instead outlined the fundamental concepts which serve as departure points for the most recent research. This necessarily limited us to a discussion of topics that have a long history in the community, leaving out some of the new and emerging areas, most notably nonlinear optical studies [152] and magnetic nanocrystals [227]. Also, the... 

MIL-P-211B covers two classes of material, Class 1 - fine granulation, and Class 2 — extra fine granulation. Chemical and physical requirements are detailed in Table 1 below ... 

Powdered Teflon for use in pyrots is covered by US Mil Spec MIL-P-48296IPA) (1 May 1974), Polytetrafluoroethylene (TFE) . Three classes of material are specified (1,2 3). The requirements are purity, 99.4% min infrared spectrum, peaks consistent with figure shown color, TFE shall be opaque and the color shall range from white to gray moisture, 0.05% max ash, 0.1% max mp, 337° 10°C packing density, Class 1 — 1.18 0.13g/cc, Class 2 - 1.25 0.02g/cc, Class 3- 1.14 0.09g/cc particle size by sieve analysis, Class 1 — 95 15 microns, Class 2 — 237 27 microns, Class 3 — 200 30 microns particle size distribution by sieve analysis, as specified in Table 1... 

Chapter 4 discussed chemical engineering challenges presented by materials and chemically processed devices for information storage and handling. In this chapter, five additional classes of materials are covered polymers, polymer composites, advanced ceramics, ceramic composites, and composite liquids. 

Hydraulic fluids are a very large class of materials that are used in machines and equipment to transfer pressure from one point to another. They are used in many ways including all fluids for car automatic transmissions, brakes, and power steering. Hydraulic fluids are also used in many machines like tractors and other farm equipment, forklift trucks, bulldozers, and other construction equipment, and airplanes. In industry, hydraulic fluids are used in machines that push, lift, pull, turn, and hold things. This profile covers only three of the many types of... 

There is not enough space in an overview of this length to do justice to this important topic, covered at length elsewhere, but the following bullet points highlight some the key features of ionic liquids (as a class of materials— not aU ionic liquids possess aU of these properties, but all the properties are exhibited by some ionic liquids) ... 

Many waxy materials in the various categories covered above were evaluated. It was observed that two classes of materials stood out 1) Paraffin waxes plus an active agent such as Alox, and 2) certain amorphous (microcrystalline) waxes with and without the addition of active substances. The results of tests indicated that the five best waxes of those studied in Ref 11 are those shown in Table 7... 

Though a scatter in the data from pentolite (PETN/TNT = 50/50) is shown, a good correlation between the small gap test and the conventional gap test is observed. This may occur because both tests are based on the same. Fig.3.120 shows a comparison between the results of the small gap test and the BAM friction test. The results in the BAM friction test cover the class of materials with dangerous properties. Class 1 shows... 

A number of different polymers have been used in the production of microchip electrophoretic devices. One class of polymers is thermoplastics, which melt above a certain temperature but are hard at room temperature. Materials from this class that have been used in the formation of microchip devices include polymethylmethacrylate, polycarbonate, polyethylene, polystyrene, and a number of others. An excellent review on the fabrication and use of polymeric materials in microchips was presented by Becker and Gartner. The second class of materials is elastomeric polymers, the most widely used of which is poly(dimethylsiloxane) (PDMS). Use of this material was covered in a review by McDonald et al. ... 

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