ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract For the first time the intrinsic tensile stress-strain behaviour of polystyrene was measured in an inert atmosphere (He) from 77 to 350 K. The intrinsic tensile strength decreases monotonically with increasing temperature with completely brittle behaviour below 231 K and crazing without shear flow at higher temperatures. The behaviour in N2, Ar, CH4, CO2, H2S, and N2O was observed with the relative pressure being the important parameter. The softening depended on the square root of the relative pressure. A calculation was made of the concentration of absorbed gas to produce a given amount of softening. The question of why polystyrene is a brittle solid and thus crazes instead of shear flows is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00752240
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