Effect of climatic ageing on extra long-term fracture mechanical properties of polyethylene

被引：0
|
作者：
Németh, P [1 ]
Marosfalvi, J [1 ]
机构：
[1] Budapesti Muszaki Gazdasagtudomanyi Egyetem, Gepelemek Tenszek, Gepszerkezettani Intezet, H-1111 Budapest, Hungary
来源：
POLYMER DEGRADATION AND STABILITY | 2001年 / 73卷 / 02期
关键词：
fracture toughness; long-term; first-level sampling; oxidation; polyethylene; infrared spectroscopy; SEN-T; fracture degradation rate;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The change of fracture resistance of medium density polyethylene (MDPE) has been studied over a wide time interval using SEN-T specimens. Employing first-level sampling (FLS) method, time dependence of the fracture toughness (K-Q) was revealed in 2.6 x 10(5) h (similar to 30 years) interval. Based on the measured data, time-related fracture mechanical properties were determined, that characterise the long-term fracture behaviour of polyethylene. Using infrared spectroscopy (IR), a relationship was detected between the change of fracture mechanical properties and the oxidative degradation of polyethylene. The results are applicable for long-term fracture mechanical design of polyethylene. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：245 / 249
页数：5
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