Effect of mechanically initiated processes on kinetics of thermal oxidative degradation and the durability of oriented polypropylene subjected to a load

Livanova, N. M.; Rapoport, Natalya; Miller, V.B.

doi:10.1016/0032-3950(78)90340-4

Cited by 7 publications

(1 citation statement)

References 6 publications

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“…Rowe et al investigated the physical aging behavior of a gas separation thin film considering the effects of previous histories with different pressure and temperature respective. Livanova et al found that the degradation rate of oriented PP specimen increased with an increase of stress level. Nanzai et al found that the mechanical properties, e.g., yield stress and Young's modulus, of the quenched poly (methyl methacrylate) (PMMA) and polycarbonate (PC) under applied strain evolved with aging time much faster than those without strain.…”

Section: Introductionmentioning

confidence: 99%

Application of time-temperature-stress superposition principle on the accelerated physical aging test of polycarbonate

Jiang

Zhu

et al. 2015

Polym Eng Sci

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The effect of physical aging on the polymer mechanical properties is very important for long-term safety assessment of engineering application. In this paper, the physical aging tests of polycarbonate (PC) were conducted systemically under different temperature and uniaxial tensile stress level. It was shown that both temperature and stress have obvious accelerated effect on the physical aging of PC. The higher the temperature and stress level are, the faster the aging process is. To predict the longterm behavior after physical aging using the short-term test results of PC, the elongation-at-break was chosen as the index of the severity of physical aging. An Arrheniustype time-temperature-stress superposition principle (TTSSP) was proposed to evaluate long-term performance using short-term test data. Using the proposed method, time and cost can be dramatically reduced for the assessment of long-term physical aging performance of polymeric material.

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Section: Introductionmentioning

confidence: 99%