Fiber loading, effect

Studies were performed to demonstrate the effects of process variables such as light intensity, cure time, initiator concentration, and fiber loading on the evolution of the mechanical properties of the polymers and composites. Even with moderate incident light intensities (less than 500 mW/cm2) and high fiber loadings (60 wt.% random fibers) the photopolymerizations proceed to completion in minutes and exhibit mechanical properties equivalent to samples prepared by traditional... 

The effects of toxins are, generally, proportional to dosage. Well-controlled dosage, as in these cell systems, provides the best opportunity for relating carcinogenicity to levels of exposure. In live animal experiments, the amount administered is usually defined as the exposure. However, not all fibrous particles will ultimately reach a specific target tissue. Measurement of the fiber load at the tissue site and the pathologic response are tedious but necessary procedures to evaluate this aspect of the problem. 

For tests other than E-84, there have been some studies on the effects of fiber loading and fiber layup on composite flammability. This has primarily been work done by the U.S. Navy on the flammability of composites used in naval vessel flammability,19-20 or work by Kandola et al.10-21-22 on the effect of fiber type and content on polymer composites studied by cone calorimeter. More work is being conducted in studying the effects of fiber orientation and lay-up not on overall flammability performance, but flammability performance under structural load. This is the most important for aircraft, vehicles, and buildings where the composites are structural members. The concern here is... 

Special considerations high temperature deflection decreases with glass fiber loading and after heating to 200°C the effect of reinlbrcement disappears... 

Figure 9.8 Effect of fiber loading on the steady state viscosity ( ) virgin PP, (A) 10% PP/sisal, (x) 15% PP/sisal, (o) 30% PP/sisal [74].

Table 9.4 Effect of fiber loading and MAPE concentration on K and n values [74].

Karenlampi P (1996) Strength and toughness of paper the effect of pulp fibre properties. Doctoral thesis, Helsinki University of Technology, Reports, Series A 4, Espoo Kettunen H, Nikanen KJ (2000) On the in-plane tear test. Tappi J 83(4) 1-6 Klungness JH, Caufield D, Sachs I, Tan F, Skyes M (1994) Fiber loading a progress report. 

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