Inorganic fibers tensile

Tensile Strength, Modulus, and Density of Selected Inorganic Fibers... 

Inorganic fibers can currently be produced from a wide range of element combinations and further fiber-types are in development (see Section 5.2.7), so that a classification according to chemical composition, as favored by preparative chemists, is not reasonable. Other possible classification criteria are e.g. the production process, the source of the fibers (natural or synthetic), their degree of order (amorphous or crystalline), their thermal stability (27 - 2227°C) or physical properties (tensile strength, elasticity modulus). The boundaries between the individual fiber types are, however, often fluid. 

The other method consists in decomposing halides on an electrically heated metal filament, which then forms the core of the inorganic fiber. Silicon carbide fibers produced in this way (from the decomposition of SiCU with, for example, toluene or acetone) possess tensile strengths of up to 280,000 N/cm. ... 

The tensile properties and densities of typical inorganic fibers are shown in Table 14.8 (data supplied by the manu turers). 

A number of studies have considered reinforcement of gels with inorganic fibers or plates both added before gelation and grown in situ in the gel and a significant increase in modulus is certainly seen [47 9]. With exfoliated clays as reinforcement, moduli increased from 4 to 20 kPa as the clay was added and the tensile strength increased from 0.1 MPa to 0.3 MPa [50-52]. 

Tensile Strength of Inorganic and Metallic Fibers and Whiskers 473... 

The tensile strength of materials is dependent on the treatment and form of the material. Thus, the tensile strength of isotropic bulk nylon-6,6 is less than that of anisotropic oriented nylon-6,6 fiber. Inorganics and metals also form fibers and whiskers with varying tensile strengths (Table 14.1). Fibers are generally less crystalline and larger than whiskers. 

Ultimate Tensile Strength of Representative Organic, Inorganic, and Metallic Fibers... 

Fillers. Inert inorganic substances such as calcium carbonate, clay, silicates, and asbestos are often utilized in vinyl compositions where clarity is not a requirement. While the carbonates and clay are used ostensibly to reduce cost, beneficial results are forthcoming. The carbonates produce a dry, matte surface and are claimed, because of their alkaline nature, to benefit heat and light stability. Clay improves electrical insulation. Silicates enhance surface dryness. Asbestos fibers provide the reinforcement necessary for dimensional stability in floor tile. Antimony oxide, per se or as a surface coating on an inert carrier, provides flame retard-ance. Their only major adverse effects are to reduce tensile strength and elongation and require an increase in plasticizer level to compensate... 

The composites were fabricated by mixing the inorganic additives with the resin, infiltrating fiber preforms with this mixture, pressing in a hydraulic press, and curing. Test specimens were then machined from the composites. Although mechanical properties of the four new composites were not measured, similar previously fabricated materials had tensile strengths and moduli of approximately 200 MPa and 8 GPa, respectively. 

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