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High compositions

Experimentally it has been shown that both frictional bridging and whisker pullout play an important role in toughening industrially manufactured composites. Such investigations confirm that to maximize toughness via both mechanisms requires a high volume fraction of whiskers and a high composite modulus to whisker modulus ratio. For example, consider the effect of 20 vol % SiC whisker E = 500 GPa) reinforcement of various matrices on the toughness as presented in Table 7 (53). [Pg.56]

Conducting Polymer Blends, Composites, and Colloids. Incorporation of conducting polymers into multicomponent systems allows the preparation of materials that are electroactive and also possess specific properties contributed by the other components. Dispersion of a conducting polymer into an insulating matrix can be accompHshed as either a miscible or phase-separated blend, a heterogeneous composite, or a coUoidaHy dispersed latex. When the conductor is present in sufftcientiy high composition, electron transport is possible. [Pg.39]

We do not underestimate the difficulties inherent in this task. The heterogeneity of highly composite books, in spite of the present vogue which spawns than, always impairs their usefulness and certainly detracts from their teachability. Nor is there a way of avoiding this difficulty. One confronts here the principle of complementarity for editorial surveillance. Written in the form of an uncertainty relation, that principle reads... [Pg.789]

This process constitutes a kind of quantum jump, albeit not the neat quantum jump of an electron from one discrete energy state to another in an atom, we are dealing with highly composite, complex structures, and even when such structures are made up of units that operate on quantum principles, the aggregate may show various degrees of continuity. Recall the earlier discussion of individual differences. For certain individuals, the transition from a b-SoC to a d-ASC definitely shows a quantum jump, with no consciousness during the transition period. The system properties of the d-ASC are quite different from those of the b-SoC. [Pg.239]

Structural sandwich panels represent what is probably one of the most common applications for structural adhesives. Facing materials can be made to adhere to core materials, such as aluminum or paper honeycomb, to give a high composite strength-to-weight ratio. [Pg.385]

Figure 4. Section of the pseudobinary phase diagram of the sulfuric acid SLP catalytic material. The data were taken from Ref. 16. The data points were derived from anomalies of the conductivity versus temperature curves of the respective mixtures. At the high compositional resolution and in the range of the global eutectic, the formation of a vanadate-sulfato complex causes the local maximum in the solidus curve. It is noted that extreme precision in the experimental procedures was necessary to derive this result illustrating the characteristic of fused systems that compound formation can well occur in the molten state. Figure 4. Section of the pseudobinary phase diagram of the sulfuric acid SLP catalytic material. The data were taken from Ref. 16. The data points were derived from anomalies of the conductivity versus temperature curves of the respective mixtures. At the high compositional resolution and in the range of the global eutectic, the formation of a vanadate-sulfato complex causes the local maximum in the solidus curve. It is noted that extreme precision in the experimental procedures was necessary to derive this result illustrating the characteristic of fused systems that compound formation can well occur in the molten state.
In order to prove that the high composition inhomogeneity was the only reason for microphase separation both (ST + HA) and (ST + MA) copolymers, some of their samples with the same compositions prepared, however, at low conversions (p < 0.10) of monomers with their subsequent distillation were studied [310,210]. All these copolymers whose dispersion is by one or two orders of magnitude less than that of the products of complete conversion (p = 1), turn out to be dear. [Pg.80]

Zuba, D., Byrska, B., Maciow, M. Comparison of herbal highs composition. Anal. Bioanal. Chem. 400, 119-126 (2011)... [Pg.327]

Detonation of 500-lb Lots of LE-3, An Insensitive Mono-Propellant , NOLTR-68-84 (1968) (ConO J) Anon, Final Phase Report. Part I. Special Warhead , DRD-23 (1968) (ConO K) LA. Karpukhin V.K. Bobolev, Critical Conditions for Explosive Shock Initiation in High Composite Explosives , FizGoreniyaVzryva 3, 381-5 (1967) L) W.H. Snyder C.R. [Pg.420]

Cozewith and Ver Strate examined fractionation data of ethylene-propylene copolymers obtained with homogeneous or apparently homogeneous systems, based on vanadium compounds such as VCl and aluminum trialkyl, or VOCI3 and AKCjHjljCl. While some catalytic systems gave the expected narrow MWD with Q 2 and high composition uniformity concerning monomeric units distribution, others gave a wider composition distribution and multimodal and broader MWD with Q even >10. The authors attributed this last result to different active centres. [Pg.119]

Another point that should be observed in extraction calculations is the non-ideal nature of the system, which is responsible for the occurrence of two liquid phases in equilibrium. The liquid-liquid equilibrium distribution coefficients, or A -values, are highly composition-dependent and must be calculated by appropriate methods, namely those based on liquid activity coefficients. The NRTL and UNIQUAC liquid activity equations (Chapter 1) are among the more accurate ones for predicting liquid-liquid equilibria. The A -Value is defined as the ratio of the mole fraction of a component in one liquid phase to its mole fraction in the other, and is calculated as... [Pg.468]

The owner (Milwaukee, WI) built an elevated—about 5 ft high—composite deck completely enclosed with the same composite boards, thereby creating a box perfectly insulated from any air movement. There were no windows in the box. The top of the box, that is, the deck itself, was pretty warm on a warm day, and rainwaters dripping into the box created a warm and very humid environment. The ceiling of the box, that is, the bottom side of the deck, was warm to touch from the inside of the box. After several months, the owner noticed small dark spots on the ceiling of the box, when she looked from the inside of her house through a small door, normally closed. There were no spots on the sidewalls of the box. [Pg.428]

Next to the lack of the high compositional heterogeneity and lack of CpG islands, other general features distinguish reptilian genomes from those of warm-blooded vertebrates (see Table 12.3). Indeed, T bands are absent in chromosomes from turtles, lizards and snakes (M. Schmid, personal comm.), and karyotypic change and species formation are much slower in this vertebrate class (as they also are in fishes and amphibians) compared to warm-blooded vertebrates (Bush et al., 1977 see also Bernard , 1993b). [Pg.356]

One can observe that, although the two reactant compositions are in a ratio of 2 1, the coke content is only slightly higher for the high composition experiments (Fig.9) and with a trend to reduce the difference as temperature increases. Hence, it would not be a gross generalization to say that, the amount of coke produced is loosely dependent on the amount of reactant used. [Pg.260]


See other pages where High compositions is mentioned: [Pg.383]    [Pg.398]    [Pg.419]    [Pg.57]    [Pg.188]    [Pg.195]    [Pg.195]    [Pg.481]    [Pg.81]    [Pg.282]    [Pg.29]    [Pg.185]    [Pg.270]    [Pg.76]    [Pg.133]    [Pg.166]    [Pg.242]    [Pg.83]    [Pg.638]    [Pg.128]    [Pg.78]    [Pg.64]    [Pg.242]    [Pg.184]    [Pg.278]    [Pg.151]    [Pg.104]    [Pg.182]    [Pg.374]    [Pg.260]    [Pg.57]    [Pg.64]   
See also in sourсe #XX -- [ Pg.4 ]




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Fiber reinforced glass composites high temperature

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