کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5204388 1381959 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of stearate preheating on the thermal stability of plasticized PVC compounds
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Effect of stearate preheating on the thermal stability of plasticized PVC compounds
چکیده انگلیسی
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 CaSt2. However, the effect of the preheating on the post-processing thermal stability is strongly determined by the composition formulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 91, Issue 11, November 2006, Pages 2715-2722
نویسندگان
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