Polypropylene homopolymer tensile modulus

TABLE 4.4 Effect of inorganic fillers and wood flour on tensile strength and tensile modulus of polypropylene (homopolymer) [2]... 

Talc s low cost qualifies it as a extender, for lowering the cost of the compound and extending the resin with minimal sacrifice in physical properties. Its aspect ratio qualifies it as a reinforcing fiUer, for enhancing performance properties of the compound. Polymers filled with platelike talc exhibit higher stiffness, tensile strength, and creep resistance at ambient as well as elevated temperatures. For example, when polypropylene homopolymer is filled with a 40 percent loading of talc, its flexural modulus is tripled from about 200,000 psi to about 600,000 psi. 

Table 6. Mechanical properties, such as the Young s modulus, E, the yield stress, Oys, the tensile strength, Ot, and the elongation at break, of the propylene homopolymer, PPO, and the controlled-rheology polypropylenes, PP-CR154, PP-CR402 and PP-CR546. The standard deviations of the Young s modulus were not available.

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