Kinetic effects of photoexposed isotactic polypropylene in the presence of some hindered-amine light stabilisers

被引：15
作者：
Jipa, S
Zaharescu, T
Setnescu, R
Setnescu, T
Wayne, WY
Pau, JQ
机构：
[1] R&D Inst Elect Engn, Bucharest 74204, Romania
[2] Natl Univ Singapore, Dept Chem Engn, Singapore 119260, Singapore
来源：
POLYMER | 2000年 / 41卷 / 18期
关键词：
polypropylene; hindered-amine light stabilisers; triazine;
D O I：
10.1016/S0032-3861(00)00120-8
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A chemiluminescence study on photo-irradiated isotactic polypropylene in the presence of three new HALS compounds, mercapto-1,3,5-triazinic phenolic stabiliser (antioxidant T) and Tinuvuin 770 as standard was carried out. The oxidation prevention was assessed by the calculation of the main kinetic parameters of thermal degradation process (oxidation induction time and maximum oxidation rate). Supplementary stability tests were performed on i-PP containing four stabiliser couples (triazine + HALS) and the cooperative factors resulting from the synergistic activities of oxidation prevention couple were determined. A kinetic treatment of the chemiluminescence data obtained from thermal ageing of stabilised isotactic polypropylene is presented. (C) 2000 Elsevier Science Ltd. All rights reserved.
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收藏
页码：6949 / 6953
页数：5
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