Abstract
AbstractSMA polymer modifiers for PVC, of the ELIX 300 type, increase the practical heat resistance of rigid PVC blends to > 100 C, allowing cost effective competition with high heat fire retardant engineering resins. The PVC/SMA blend technology, physical property characteristics, and fire retardant properties are presented. A definition of practical heat resistance and the correlation of practical heat resistance to Vicat heat resistance measurements are given with comparisons to competitive high heat fire retardant plastics. Current commercial application experience in rigid injection molding and profile extrusion is described which has confirmed the cost/performance advantage of PVC/SMA blends. Potential market opportunities for PVC/SMA blends will be presented for discussion.
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