High flow compositions

A. Adedeji. High flow compositions of compatibilized poly(arylene ether) polyamide blends. US Patent 6794450, assigned to General Electric Company (Pittsfield, MA), September 21,2004. 

Coolant flow and temperatures (in and out) low flow and high temperature. Composition of proeess and effluent streams. 

Figure 5-52. A-410 Composite Impeller. Strong axial flow at very high flow efficiency. Operates through a wide range of viscosities. By permission, Lightnin, (Formerly Mixing Equipment Co.) a unit of General Signal.

Figure 7.10 The effect of increasing the flow rate and decreasing the contact time for WGS reaction over G-66 A, Cu0.2Ceo 02 y, and Cu01Ce09O2 catalysts. Empty symbols illustrate low flow rate, SV = 5000 h 1 and filled symbols high flow rate, SV = 30.000 h 1. The dotted line represents the equilibrium curve for a feed gas composition of 0.5% CO and 1.5% H2 in He. The solid lines are model fits assuming first-order reversible kinetics. (Reprinted from [51]. With permission from Elsevier.)...

The unintended negative effects of high buffer-salt concentrations on the efficiency of the electrospray can be significantly reduced by adding an appropriate sheath liquid, thus usually improving the spray stability. However, since the sheath liquid acts as the terminal buffer reservoir, it must contain an electrolyte in order to maintain an efficient electrophoretic separation. Therefore, any choice of sheath flow composition represents a compromise between separation efficiency and spray stability. 

Given the vast number of possible matrix-reinforcement combinations in composites and the relative inability of current theories to describe the viscosity of even the most compositionally simple suspensions and solutions, it is fruitless to attempt to describe the momentum transport properties of composite precursors in a general manner. There are, however, two topics that can be addressed here in an introductory fashion flow properties of matrix/reinforcement mixtures and flow of matrix precursor materials through the reinforcement. In both cases, we will concentrate on the flow of molten polymeric materials or precursors, since the vast majority of high-performance composites are polymer-based. Fnrthermore, the principles here are general, and they apply to the flnid-based processing of most metal-, ceramic-, and polymer-matrix composites. 

Following this initial period of polyimide development, interest reached a steady-state and remained there until the late 1970s. During this time a major impetus to the polyimide area was provided by the aerospace industry. The need for composite matrix resins as well as structural adhesives with excellent oxidative and thermal stability appeared to be at least partially met by polyimide type resins. Ultimately, requirements of high flow and low void content in relatively thick parts directed these efforts into different directions. Another upswing occurred in the early 1980s with the potential application of... 

Fig. 4 shows experimental profiles of the mean temperature, the pressure and the flow rate during charges of the cycles 5, 100 and 700. Whatever the cycle, during the charge performed at high flow rate, the exothermic adsorption of the different components of natural gas entails an increase of the mean temperature of the vessel (Fig. 4a). The range in variation of the mean temperatures is the consequence of the coupling between the power delivered by the gas adsorption and the heat transfer inside the composite block. The decrease of this range during the charge as a function of the cycle number is a first indication of the evolution of the...

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