Mineral mechanical properties, comparison

Table 2.6 Comparison of the Diffraction, Optical and Mechanical Properties of the Six Asbestos Minerals... 

Natural fibres can be derived either from plants (such as flax or hemp), produced by animals (such as silk or spider silk) or from minerals (such as asbestos). Table 6.1 shows the comparison of selected physical properties between natural fibres and synthetic fibres. Although the mechanical properties of natural fibres are very much lower than those of conventional synthetic fibres, such as glass or carbon fibres. 

Table 13.6 Comparison of mechanical properties of mineral-filled HOPE [9].

In comparison to nanofibers of pure tussah silk, the composite notably improved the mechanical properties, with a higher initial modulus and breaking stress. It was found that the fiber scaffold supported both the cell adhesion and the proliferation, and also functionally promoted alkaline phosphatase and mineral deposition relevant for biomineralization. The composites are more biocompatible than pure tussah silk fibroin or cover slip (15). 

Carbon fibers cause a deterioration of volume resistivity, and arc resistance in polyamide 6,6. Mineral fillers also decrease the dielectric constant and surface arc resistance in polyamide 6,6. This is confirmed by a comparison of electrical, mechanical, and thermal properties of polyoxymethylene, where the incorporation of 30% carbon fiber reduces volume resistivity and dielectric strength, in addition to a distinct improvement in tensile strength at heat distortion temperature (Table 5.10). 

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