METHOD FOR THERMORADIATION TREATMENT OF POLYTETRAFLUOROETHYLENE PRODUCTS
FIELD: polymer materials. SUBSTANCE: method consists in gamma-irradiation of product at elevated temperature in melt in inert medium. Melt is first cooled and irradiation is carried out until dose 5-35 Mrad is absorbed, while temperature of product is reduced during irradiation procedure by 0.8- 1 C...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
27.08.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | FIELD: polymer materials. SUBSTANCE: method consists in gamma-irradiation of product at elevated temperature in melt in inert medium. Melt is first cooled and irradiation is carried out until dose 5-35 Mrad is absorbed, while temperature of product is reduced during irradiation procedure by 0.8- 1 C per 1 Mrad so that temperature of product is maintained below melting temperature of polytetrafluoroethylene but above crystallization temperature. EFFECT: decreased creeping and increased wear resistance of products at the same coefficient of fiction characteristic of polytetrafluoroethylene non-modified by radiation. 2 cl, 1 dwg, 1 tbl, 5 ex |
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Bibliography: | Application Number: RU20010104473 |