P- resin

The specification requirements for electrode binder pitch, eg, high C/H ratio, high coking value, and high P-resin content, effectively ruled out pitches from gasworks or low temperature tars. The cmde tar is distilled to a medium-soft pitch residue and then hardened by heating for several hours at 385—400°C. This treatment increases the toluene-insoluble content and produces only a slight increase in the quinoline-insoluble (Ql) material, the latter by the formation of mesophase. 

This is especially apparent when working with semicrystalline resins or parts with multiple p resin layers. 

TS Wind OUTPUTS (functions of position and time) p resin viscosity T composite temperature a degree of cure F Fiber tension u, Fiber position... 

OUTPUTS (functions of position and time) p resin viscosity... 

It is my contention that the optical and physical properties and the optical structure produced during the destructive distillation or thermal decomposition of vitrinite is closely related to mode of carbonization and, in the case of pitch, is intimately related to the method of pitch preparation. For instance, a pitch may be produced from a high or low temperature tar, from a primary cooler tar, or from a flushing liquor tar. In addition, it may be air blown, thermally or chemically treated, straight distilled, or cut back, just to mention a few. Under similar carbonization conditions almost any one of these pitches will produce a coke which has certain characteristics that are related to the parent pitch. Even pitches similarly processed from the tar can differ in the content of quinoline- and benzene-insoluble material and P-resin, and can contain more than one distinct liquid phase. None of these points of difference has been discussed by Dr. Taylor or even recognized in the preparation. To interpret the structure of pitch coke divorced from a knowledge of the pitch source and/or carbonization conditions can lead to erroneous conclusions. These are pertinent data omitted by the authors. 

Benzene is a colorless, mobile liquid, having, when pure, an agreeable odor up. gr. 0.86 at 15 (59 F.) crystallizing at h-4. 5 (40°.l F.) boiling at 80, 6 (1V6. 9 F.) very sparingly soluble in water, soluble in alcohol, ether, and acetone. It dissolves 1, S, P, resins, caoutchouc, guttapercha, and almost all the alkaloids. It is infiaxnmable, and bums with a luminous, smoky fiame. 

Zeo-Karb 315 Amberlite IR-100 DuoUte C-3 — Lewatit PN Wofatit P " resins ... 

Process parameters p resin viscosity [Pa.s] (j) preform porosity (note that fiber volume fraction) Qjnj injection flow rate [mVs] injection pressure [Pa] w. mold width [mj hr. mold thickness [mj L mold length [mj K preform permeability along the flow direction [m j t. time [sj R, inlet hole radius [mj R/ and Rf2- major and minor principal dimensions of the elliptical flow front [m] (see Fig. 9.30). 

This scheme (Fig. 3) was used recentlywith indices of labile P (resin extractable), more stable P fractions and microbial P to follow the rate of P movement between different pools in response to C additions in soil incubation... 

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