Problem of evaluation of activation energy from the temperature-rate dependences of strength
- 20 Downloads
1. A method has been developed for treating the experimental data on strength, obtained under conditions of uniaxial extension at ve = const.
2. It has been proposed that the deformation-strength properties of polymers of different structures be characterized by the value of coefficient L, i.e., by the relative lowering of the potential barrier of degradation under the action of mechanical stress.
3. A high structure sensitivity of the proposed strength characteristics has been shown using vulcanized rubbers with different structure of the vulcanized lattice point as examples.
KeywordsPolymer Experimental Data Activation Energy Rubber Mechanical Stress
Unable to display preview. Download preview PDF.
- 1.V. E. Gul', The Structure and Strength of Polymers [in Russian], 2nd ed., Moscow (1971).Google Scholar
- 2.T. V. Shamraevskaya, T. A. Pirko, F. Kh. Khakimov, and V. E. Gul', "Structural sensitivity of strength characteristics of polystyrene during uniaxial extension," Mekh. Polim., No. 6, 979–984 (1974).Google Scholar
- 3.S. N. Zhurkov and É. E. Tomashevskii, "Microscopic study of crack formation during rupture," Zh. Tekh. Fiz.,27, No. 6, 1248–1256 (1957).Google Scholar
- 4.V. E. Gul', N. Ya. Sudneva, and B. A. Dogadkin, "Study of the role of intermolecular forces in the mechanism of highly elastic deformation," Kolloidn. Zh.,13, No. 6, 422–431 (1951).Google Scholar
- 5.S. N. Zhurkov and V. A. Stepanov, "Time dependence of the strength of solid bodies," Zh. Tekh. Fiz.,23, No. 10, 1677–1689 (1953).Google Scholar
- 6.N. I. Peschanskaya and V. A. Stepanov, "Durability and deformation of polymers at low temperatures," Fiz. Tverd. Tela,7, No. 10, 2962–2968 (1965).Google Scholar
- 7.V. R. Regel', "Kinetic concept of strength as a scientific principle for predicting the durability of polymers under load," Mekh. Polim., No. 1, 98–112 (1971).Google Scholar
- 8.S. N. Zhurkov, V. N. Vettegren', V. E. Korsukov, and I. I. Novak, "Determination of overstressed chemical bonds in polymers by infrared spectroscopy," Fiz. Tverd. Tela,11, No. 2, 290–295 (1969).Google Scholar
- 9.V. E. Gul', "Effect of molecular interaction on the strength of high polymers with a developed spatial structure," Dokl. Akad. Nauk SSSR,85, No. 1, 145–148 (1952).Google Scholar
- 10.V. E. Gul', "Specific laws of failure of polymer materials," Mekh. Polim., No. 3, 474–482 (1968).Google Scholar
- 11.F. Zwicky, "Tensile strength of rock salt," Phys. Z.,24, 131–137 (1923).Google Scholar
- 12.I. G. Kuznetsova, "Study of temperature and time dependences of mechanical properties of of polyformaldehyde die cast under pressure and pressed," Candidate's Dissertation, Moscow (1972).Google Scholar
- 13.V. E. Gul, and G. P. Krutetskaya, "Experimental study of the dependence of the velocity of a highly elastic fracture on the rate of deformation of the sample," Dokl. Akad. Nauk SSSR,114, No. 5, 973–975 (1957).Google Scholar
- 14.R. F. Lendel and R. F. Fedors, "Degradation of amorphous unfilled polymers," in: Degradation of Solid Polymers [in Russian], Moscow (1971), pp. 286–302.Google Scholar
- 15.T. V. Shamraevskaya, A. A. Dontsov, V. F. Soldatov, and V. I. Babievskii, "Effect of the distribution of crosslinks of vulcanizates of butadiene-styrene rubber on their mechanical properties," Kauchuk i Rezina, No. 4, 19–21 (1974).Google Scholar
- 16.A. A. Dontsov, "Study of formation of vulcanized structures in elastomers," Doctoral Dissertation, Moscow (1974).Google Scholar
- 17.S. N. Zhurkov and V. E. Korsukov, "Atomic mechanism of polymer degradation under load," Fiz. Tverd. Tela,15, No. 7, 2071–2080 (1973).Google Scholar
- 18.E. H. Andrews, "An extensiometer microscope stage for photoelastic studies in rubber," J. Sci. Instrum.,34, 115–123 (1957).Google Scholar