Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Network converters

The stem-position feedback network converts stem travel to a useful form for the summer. This block includes the feedback linkage. [Pg.783]

Equation (5.1) represents the hydrolysis of the salt of a weak acid. The sodium ion migrates into the solution, and the hydroxyl ion released in the glass can then attack the otherwise stable silica network, converting a bridging oxygen into a non-bridging site, thus disrupting the network ... [Pg.167]

If a large number of branches exist that connect all of the backbone molecules into a three-dimensional network, the material will not flow when heated, and it is considered a thermoset resin. Vulcanized rubber is an example where the sulfur linkages create a three-dimensional network, converting the precursor rubber into a solid thermoset material. Crosslinked backbone chains are shown in Fig. 2.8(e). When extruding many thermoplastics, the polymer can undergo chemical reactions to form small amounts of crosslinked material. Partial crosslinking is a problem with some PE resins that contain residual double bonds that are made using... [Pg.33]

The stem position feedback network converts stem travel to a useful form for the summer. This block includes the feedback linkage which varies with actuator type. Depending on positioner design, tKe stem position feedback network can provide span and zero and characterization functions similar to that described for the input conversion block. [Pg.84]

The block consists of a temperature detector (RTD) that measures the temperature. The detector is felt as resistance to the bridge network. The bridge network converts this resistance to a DC voltage signal. [Pg.32]

Glass is a noncrystalline solid substance with similarities to a liquid. To put it simply, glass is made up of an irregular network of particles (usually Si02) into the gaps between which the other components (the network converters such as Na20, K20) are woven, Figure 2.2. [Pg.20]

Figure2.2 (a) Network converters (Na20) (b) oxygen, not make bridges (c) oxygen, make bridges and (d) make bridges Si02. Figure2.2 (a) Network converters (Na20) (b) oxygen, not make bridges (c) oxygen, make bridges and (d) make bridges Si02.
As already discussed, coal is a solid, three-dimensional, cross-linked network. Converting it to liquids requires the breaking of covalent bonds and the removal of carbon or the addition of hydrogen. The former method of producing... [Pg.41]

Figure 3.2 1 Network converters (Na20), 2 oxygen, making no bridges, 3 oxygen, making bridges, 4 Si02, making bridges). Figure 3.2 1 Network converters (Na20), 2 oxygen, making no bridges, 3 oxygen, making bridges, 4 Si02, making bridges).
In addition to network converters, the network initiators, aluminum and boron, are also leached. Boron, however, is extracted relatively slowly. B2O3 possibly plays a special role in glass fiber corrosion, because further investigations indicate that boron-free ECR glass fibers are considerably more resistant than conventional E-glass fibers [818]. [Pg.703]

Conversion of Cyclic to Acyclic Structures. Upon oxidation, the aromatic rings of lignin may be converted direcdy to acycHc stmctures, eg, muconic acid derivatives, or indirectly by oxidative splitting of o-quinoid rings. Further oxidation creates carboxyUc acid fragments attached to the lignin network. [Pg.139]

Chapters Three, Five and Six have covered the synthesis of physical mass-exchange networks. In these systems, the targeted species were transferred from the rich phase to the lean phase in an intact molecular form. In some cases, it may be advantageous to convert the transferred species into other compounds using reactive MSAs. Typically, reactive MSAs have a greater capacity and selectivity to remove an undesirable component than physical MSAs. Furthermore, since they react with the undesirable species, it may be possible to convert pollutants into other species that may either be reused within the plant itself or sold. [Pg.191]


See other pages where Network converters is mentioned: [Pg.17]    [Pg.230]    [Pg.230]    [Pg.188]    [Pg.391]    [Pg.17]    [Pg.230]    [Pg.230]    [Pg.188]    [Pg.391]    [Pg.6]    [Pg.13]    [Pg.1957]    [Pg.116]    [Pg.304]    [Pg.125]    [Pg.130]    [Pg.545]    [Pg.302]    [Pg.140]    [Pg.425]    [Pg.491]    [Pg.121]    [Pg.463]    [Pg.20]    [Pg.481]    [Pg.783]    [Pg.130]    [Pg.133]    [Pg.161]    [Pg.270]    [Pg.682]    [Pg.1041]    [Pg.203]    [Pg.141]    [Pg.147]   
See also in sourсe #XX -- [ Pg.55 ]




SEARCH



© 2024 chempedia.info