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INDEX process parameters

Ionomer resins are produced in multiple grades to meet market needs, and prospective customers are provided with information on key processing parameters such as melt-flow index. Nominal values for many other properties are Hsted in product brochures. The ASTM test methods developed for general-purpose thermoplastic resins are appHcable to ionomers. No special methods have been introduced specifically for the ionomers. [Pg.408]

Edwards and Lawrence (1993) have presented a list of sixteen chemical and physical properties and process parameters which are available at the process route selection stage (Table 5). Seven of these sixteen parameters were included to their index method (PUS). The selected parameters concentrate very much on the chemical process route and chemistry. They have also tested their selection by an expert judgement, which gave support to their work (Edwards et al., 1996). [Pg.43]

Film. The blown film process is most commonly used in the production of PB film from resins with melt indexes from 0.3 io 10 g/10 min at a melt temperature of200-215DC using conventional equipment. Mechanical properties of blown PB film depend on the degree of orientation and other processing parameters. PB film can be sealed ai 100 220 (1. Another technique for the PB film production consists of film casting from the melt on polished chilled rolls and co-extrusion or lamination with other films. [Pg.1150]

To measure the separation efficiency of a membrane reactor involving multiple reaction components, the extent of separation, briefly introduced in Chapter 7, was used to replace the more commonly used separation factor by Mohan and Govind [1988a]. This alternative index of separation performance is based on the flow quantities of the process streams involved while the separation factor is calculated from the compositions instead. The goals of a high conversion and a high separation sometimes contradict each other. The choice or, more often than not, compromise of the two goals depends, on one hand, on the downstream separation costs and, on the other, on the process parameters such as the ratio of the reactant permeation to reaction rate and the relative permeabilities of the reaction components. [Pg.531]

The indexing process in this case should be finalized by using the found lattice parameters to assign indices to the weak Bragg reflections that have been eliminated from the indexing and by refinement of the lattice parameters employing all available experimental data. This can be easily done following the procedure described earlier in section 5.4. [Pg.456]

The process relationship for the target quantity 32 (or for a) can be formulated either with extensive or intensive quantities. The difference lies in the choice of the process parameter. The dispersion characteristic formulated with extensive quantities uses as the process parameter the extensive quantity stirrer speed and leads, assuming a given geometry (stirrer type D/d, H/d, h/d = const), to the following dependence (the index d indicating the physical properties of the dispersed phase, no index indicating the physical properties of the continuous phase) ... [Pg.248]

When this rule is followed the enquirer can be certain that the indexers have represented the process participation of all important objects in a text. In this way the entire indexing process becomes very reliable, and one can formulate the corresponding search parameters with hardly any risk of information loss. Consequently, the potential which an indexing language offers can really be exploited to the utmost. [Pg.434]

Arriola I, Whitenton E, Heigel J, Arrazola PJ (2011) -Relationship between machinability index and in-process parameters during orthogonal cutting of steels. CIRP Ann Manuf Technol 60(l) 93-96... [Pg.1111]

The two most relevant propraties of these polyols with regard to their use as polyurethane precursors are their viscosity and hydroxyl index. Values which simulate those associated with comma-cial counterparts were readily obtained by adjusting the key process parameters, notably the PO/L ratio. [Pg.278]

There are no standard tests for measuring the onset of asphaltenes precipitation. Among the techniques and analytical methods frequently used to measure sediment and asphaltenes onset for the adjustment of different process parameters in the refineries are spot test (ASTM-D-4740-95) total sediment (ASTM-4870-96) solubility parameters, optical microscope light scattering (PORLA) peptization value (P-value) ° colloidal instability index (CII) coking index. ... [Pg.175]


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See also in sourсe #XX -- [ Pg.813 ]




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