Weathering of HDPE in Rio de Janeiro city

被引：0

作者：

Mendes, LC ^{[1
]}

Torres, AC ^{[1
]}

de Paula, FOC ^{[1
]}

Passos, AC ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, Ctr Tecnol, BR-21945970 Rio De Janeiro, Brazil

来源：

ANTEC 2000: SOCIETY OF PLASTICS ENGINEERS TECHNICAL PAPERS, CONFERENCE PROCEEDINGS, VOLS I-III | 2000年

关键词：

weathering; aging; polyethylene; degradation;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The action of weathering on the mechanical and thermal properties of high density polyethylene (HDPE) without aditives in the atmosfere of Rio de Janeiro City was studied. After about 1800 hours of exposition time it was observed that degradation process was very fast and can be seen in some mechanical parameters. It was observed an increasing of 20% of elastic modulus. The stress at yield increased slightly and elongation decreased, Both, stress and elongation at break diminished. The elongation showed a decreasing about 90%. The impact resistance presented a loss of 50%. The molecular weight also decreased.

引用

页码：3609 / 3611

页数：3

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