Effect of stearate preheating on the thermal stability of plasticized PVC compounds

被引:52
作者
Gonzalez-Ortiz, Luis J.
Arellano, Martin
Sanchez-Pena, M. Judith
Mendizabal, Eduardo
Jasso-Gastinel, Carlos F.
机构
[1] Univ Guadalajara, Dept Chem Engn, Guadalajara 44430, Jalisco, Mexico
[2] Univ Guadalajara, Dept Chem, Guadalajara 44430, Jalisco, Mexico
关键词
preheating of stearates; plasticized PVC; thermal stability; color stability; HCl release;
D O I
10.1016/j.polymdegradstab.2006.04.015
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Effect of preheating of stearates on the processing and post-processing thermal stability of poly(vinyl chloride) compounds, plasticized with di(2-ethylhexyl) phthalate (DEHP) and epoxidized soybean oil (ESO), using several ratios of calcium/zinc stearates and DEHP/ESO is reported. The compounds were prepared as follows: (1) dry-blending the compound components, (2) pelletizing the dry-blend and (3) extruding the pellets to obtain a ribbon geometry. Processing stability was determined by: (a) mechanical characterization and (b) visual color comparison of extruded samples. Post-processing thermal stability was followed by: (a) measurement of HCl release from heated pellets and (b) color changes in heated ribbon samples. From a practical point of view, the preheating has a negligible effect on the initial color of formulations; except for the case of formulations without both ESO and CaSt(2). However, the effect of the preheating on the post-processing thermal stability is strongly determined by the composition formulation. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2715 / 2722
页数:8
相关论文
共 32 条
[1]  
Abbas KB, 1980, J VINYL TECHNOL, V2, P87, DOI DOI 10.1002/VNL.730020205
[2]  
[Anonymous], 1993, J VINYL TECHNOL
[3]  
AYREY G, 1974, J POLYM SCI MACROMOL, V8, P1
[4]  
BACALOGLU R, 2001, PLASTICS ADDITIVES H, pCH3
[5]   Synergism of Ca/Zn soaps in poly(vinyl chloride) thermal stability [J].
Balköse, D ;
Gökçel, HI ;
Göktepe, SE .
EUROPEAN POLYMER JOURNAL, 2001, 37 (06) :1191-1197
[6]  
Baltacioglu H, 1999, J APPL POLYM SCI, V74, P2488, DOI 10.1002/(SICI)1097-4628(19991205)74:10<2488::AID-APP18>3.0.CO
[7]  
2-B
[8]   A POSSIBLE MECHANISM FOR BENZENE FORMATION DURING THE PYROLYSIS OF POLYVINYL-CHLORIDE) [J].
BELLENGER, V ;
CARETTE, LB ;
FONTAINE, E ;
VERDU, J .
EUROPEAN POLYMER JOURNAL, 1982, 18 (04) :337-340
[9]   THE MODE OF ACTION OF METAL STEARATE STABILIZERS IN POLY(VINYL CHLORIDE) .2. INFLUENCE OF PREHEATING ON INDUCTION TIMES AND CARBONYL FORMATION [J].
BENAVIDES, R ;
EDGE, M ;
ALLEN, NS .
POLYMER DEGRADATION AND STABILITY, 1995, 49 (01) :205-211
[10]   THE MODE OF ACTION OF METAL STEARATE STABILIZERS IN POLY(VINYL CHLORIDE) .3. INFLUENCE OF PREHEATING ON POLYENE FORMATION AND SECONDARY REACTIONS [J].
BENAVIDES, R ;
EDGE, M ;
ALLEN, NS ;
SHAH, M ;
TELLEZ, MM .
POLYMER DEGRADATION AND STABILITY, 1995, 48 (03) :377-385