Polymers tensile strength values

FIGURE 3.7 Comparative plots of tensile strength values of nanosilica and precipitated sihca-fiUed aciyhc rubber (ACM) composites. (From Bandyopadhyay, A., Bhowmick, A.K., and De Sarkar, M., J. Appl. Polym. Sci., 93, 2579, 2004. Courtesy of Wiley InterScience.)... 

There is only one hint in the literature, by Starkweather (10), that deals with copolymerization with butadiene. The polymers described there have poor tensile strength values and elongations. 

The tensile strength of the films was influenced by the polymer components. By addition of cellulose fillers, the tensile strength values were improved. Elongation at break for CMSt/St/C film samples was reduced than that for CMSt/St sample. However, as a result of more compact structure due to high intermolecular hydrogen bond... 

Other mechanical properties including modulus, tensile strength and elongation at break of the incompatible natural rubber/poly(methyl methacrylate) blends were very poor, especially in the values of stress at their break points. Nevertheless, the modulus and tensile strength values of these polymer... 

Bar chart of room-temperature strength (i.e., tensile strength) values for various metals, ceramics, polymers, and composite materials. 

Content of Ot-Olefin. An increase in the a-olefin content of a copolymer results in a decrease of both crystallinity and density, accompanied by a significant reduction of the polymer mechanical modulus (stiffness). Eor example, the modulus values of ethylene—1-butene copolymers with a nonuniform compositional distribution decrease as shown in Table 2 (6). A similar dependence exists for ethylene—1-octene copolymers with uniform branching distribution (7), even though all such materials are, in general, much more elastic (see Table 2). An increase in the a-olefin content in the copolymers also results in a decrease of their tensile strength but a small increase in the elongation at break (8). These two dependencies, however, are not as pronounced as that for the resin modulus. 

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