Kinetics of the degradation of SKF-12 rubber and analysis of the volatile products by the mass-spectrometric method
Among synthetic polymers, the fluorine-containing rubbers SKF-32 and SKF-26 (copolymers of vinylidene fluoride with chlorotrifluoroethylene and hexafluoropropylene) occupy a special place. Their valuable properties (high thermal resistance, chemical resistance, and resistance to the action of aggressive media) have brought about the wide use of articles based on them in various branches of industry and the national economy. A study of the kinetics of the thermodynamic and thermo-oxidative degradation of the investigated specimens was carried out by the thermogravimetry method on the McBain balance over the range 603-623/sup 0/K. Mass-spectral analysis was applied to the volatile products. On the basis of the results obtained, we may conclude that a deep and detailed study of the kinetics of degradation and analysis of the volatile products by contempory methods affords the possibility of solving questions pertaining to the structural changes which take place in polymers during the process of various types of aging. Results of these studies can be used in further work on the application of the class of compounds based on benzofuran derivatives as thermo-stabilizers for other fluorine-containing polymers.
- Research Organization:
- V. I. Lenin Tashkent State Univ., USSR
- OSTI ID:
- 6833032
- Journal Information:
- Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 266:1-3; ISSN DKPCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360405* -- Materials-- Polymers & Plastics-- Degradation & Erosion-- (-1987)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
CHEMICAL REACTION KINETICS
COPOLYMERS
ELASTOMERS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HIGH TEMPERATURE
KINETICS
MASS SPECTROSCOPY
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
REACTION KINETICS
RUBBERS
SPECTROSCOPY
THERMAL DEGRADATION