Volume, fiber

Figure 18. Angular dependence of Youngs modulus for 30-volume fiber glass...

The effect of angle of applied stress on modulus, tensile strength, and elongation at break was further studied for a 30-volume fiber glass composite in a formulation identical to the standard formulation, except that the silica was reduced to 15 parts per hundred. The results for modulus are illustrated in Figure 18 where the data show good agreement with the theoretical relationship developed by Lees (6). 

Figure 20. Angular dependence of elongation at break for 30-volume fiber...

Figure 21. Rate of crosslink development vs. rate of fiber-matrix adhesion development for 12-volume fiber glass composite...

Here, 7 is the magnitude of the strain rate tensor and C/ is a phenomenological coefficient which models the interactions between the fibers, usually referred to as the Folgar-Tucker interaction coefficient. The coefficient varies between 0, for a fiber without interaction with its neighbors, and 1, for a closely packed bed of fibers. For a fiber reinforced polyester resin mat with 20-50% volume fiber content, CV is usually between 0.03 and 0.06. When eqn. (8.153) is substituted into eqn. (8.152), the transient governing equation for fiber orientation distribution with fiber interaction built-in, becomes... 

Volume fiber 1/(volume fiber 1 + volume of plastic in multifiber composite)... 

It is worth noting that ideal arrangements of fibers of circular cross section with the highest packing, hexagonal arrays with the fibers touching, would lead to a theoretical volume fiber fraction of 0.9. This value is never... 

The number of derivatives commercially produced from this group of aromatic substrates is extensive, many targeted as monomers for polymerization to the large-volume fibers and plastics. Some of these, the ethylbenzene to styrene sequence and cumene to phenol, have already been discussed in connection with ethylene and propylene derivatives. Details of some further representative examples of major products are outlined here. 

Figure 5.13, Representative flow ceUs used for absorption detection. A, Z-cell for conventional packed column applications and B, a low-volume fiber optic ceU (volume = 4 nl and path length 0.15 mm) for use with packed capillary columns.

The most common cell for solutions is a 1 cm rectangular quartz or glass cuvet with four optical windows. Eor extremely small volumes, fiber optic probes, microvolume cells, and flow cells are available. Gas cells, and special sample compartments for solid samples are commercially available. 

Jacob G C, Starbuck J M, Fellers J F and Simunovic S (2005), Effect of fiber volume, fiber length and fiber tow size on the energy absorption of chopped carbon fiber-poljoner composites, Polym Compos 26 293-305. 

Alkaline Cleaners Pace B-82 23 14 8 Avimid K DuPont Filler 57% IM-6 fiber Specimen Laminates, 16 ply, 0°, 2.3 mm (90 mils) thick, 57 volume % fibers... 

Nylon 6,6 and nylon 6 accounted for most of the 4 million ton nylon fibers as well as the 2.7 million ton nylon plastics used in 2011. Some of the large-volume fiber products include carpets, apparel, and tire cord. Smaller markets include strings for guitars, tennis racquets, and fishing lines. Molded and extruded nylons are used in automotive, electronics, and electrical parts. Other applications of amorphous nylons include coatings and adhesives. 

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