The effect of metals on thermal degradation of polyethylenes

被引：62
作者：
Gorghiu, LM
Jipa, S
Zaharescu, T
Setnescu, R
Mihalcea, I
机构：
[1] Adv Res Inst Elect Engn, Bucharest 74204, Romania
[2] VALACHIA Univ Targoviste, Targoviste 0300, Romania
[3] Univ Bucharest, Fac Chem, Bucharest 70346, Romania
来源：
POLYMER DEGRADATION AND STABILITY | 2004年 / 84卷 / 01期
关键词：
metals; degradation; polyethylenes; chemiluminescence;
D O I：
10.1016/S0141-3910(03)00265-9
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 thermal degradation of some polyethylenes (LDPE, LLDPE, HDPE, UHMWPE) on seven metal trays in the presence of triazines as stabilisers was carried out. The kinetic effects of metals (Al, Zn, Ti, Mo, Mn, Fe and Cu) were assessed at 200 degreesC by the calculation of oxidation induction period, half-oxidation time, maximum oxidation time and rate in the propagation stage. Different sequences of catalytic effect provided by the studied metals in LDPE and HDPE are reported. A characteristic copper index for each metal was also calculated. Some considerations on the thermal stability of polyethylenes in intimate contact with metal surfaces are presented. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：7 / 11
页数：5
相关论文
共 17 条
[1]   CHEMILUMINESCENCE FROM PEROXIDES IN POLYPROPYLENE .1. RELATION OF LUMINESCENCE TO PEROXIDE CONTENT [J].
BILLINGHAM, NC ;
THEN, ETH ;
GIJSMAN, PJ .
POLYMER DEGRADATION AND STABILITY, 1991, 34 (1-3) :263-277
[2]   COMPARATIVE STUDIES OF THE CHELATION OF TRANSITION-METAL IONS WITH METAL DEACTIVATORS [J].
BLATT, E ;
GRIESSER, HJ ;
HODGKIN, JH ;
MAU, AWH .
POLYMER DEGRADATION AND STABILITY, 1989, 25 (01) :19-29
[3]   New synergists for hindered amine light stabilizers [J].
Gijsman, P .
POLYMER, 2002, 43 (05) :1573-1579
[4]   DTA FOR CONTROL OF STABILITY IN POLYOLEFIN WIRE AND CABLE COMPOUNDS [J].
HOWARD, JB .
POLYMER ENGINEERING AND SCIENCE, 1973, 13 (06) :429-434
[5]  
Jipa S, 1999, POLYM INT, V48, P414, DOI 10.1002/(SICI)1097-0126(199905)48:5<414::AID-PI155>3.0.CO
[6]  
2-#
[7]   Efficiency assessment of additives in thermal degradation of i-PP by chemiluminescence - I. Triazines [J].
Jipa, S ;
Setnescu, R ;
Setnescu, T ;
Zaharescu, T .
POLYMER DEGRADATION AND STABILITY, 2000, 68 (02) :159-164
[8]   Kinetic effects of photoexposed isotactic polypropylene in the presence of some hindered-amine light stabilisers [J].
Jipa, S ;
Zaharescu, T ;
Setnescu, R ;
Setnescu, T ;
Wayne, WY ;
Pau, JQ .
POLYMER, 2000, 41 (18) :6949-6953
[9]   Photoinitiated degradation of polymers by metal salts - Recent developments [J].
Kaczmarek, H ;
Rabek, JF .
ANGEWANDTE MAKROMOLEKULARE CHEMIE, 1997, 247 :111-130
[10]  
KAMMEL G, 1976, J POLYM SCI POL SYM, P73
12