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Accession number;02A0423806
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| Title;Evaluation of residual lifetime of LDPE degraded radiation by time-temperature superposition method. |
| Author;
KIM K-Y
(Korea Atomic Energy Res. Inst., Kor)
LEE C
(Chungbuk Nat'l Univ., Kor)
RYU B-H
(Dongguk Univ., Kor)
LIM K-J
(Chungbuk Nat'l Univ., Kor)
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Journal Title;Proceedings of the Symposium on Electrical and Electronic Insulating Materials and Applications in Systems
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Journal Code:G0398B
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ISSN:
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VOL.33rd;NO.;PAGE.130-133(2001)
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| Figure&Table&Reference;FIG.5, REF.9 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A novel method has been proposed to determine the residual lifetime of low density polyethylene(LDPE) by time-temperature superposition(TTS) using a dynamic mechanical analyzer(DMA). The principle of this new method is to detect the change in response of polymeric materials to multi-frequency dynamic loading over a glass transition interval. LDPE was irradiated with gamma ray up to 1000kGy at a dose rate of 5kGy/hr in the presence of air at room temperature. The glass transition temperatures of each irradiated samples have tested, compared with TGA and DMA methods. Inter-relationship between TGA and TTS methods for lifetime prediction were investigated. For radiation degradation of polymeric materials, TTS method can be a useful tool to predict the residual lifetime. (author abst.) |
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