Image from Google Jackets

Morphology and Mechanical Properties of Foamed Polyethylene-Polypropylene Blends

Tipo de material: TextoTextoSeries ; Journal of Cellular Plastics, 41(5), p.417-435, 2005Trabajos contenidos:
  • Herrera Tejeda, E
  • Zepeda Sahagún, C
Tema(s): Recursos en línea: Resumen: Blends of high-density polyethylene and polypropylene are foamed by means of extrusion using azodicarbonamide as a chemical blowing agent to study the effect of blending on the morphological and mechanical properties. At 0.5 wtpercent of blowing agent, optimum foam density is found to be around 417 kg/m3 for each blend composition, but the average cell size ranges between 130 and 301 mm depending on the blend composition. It is believed that the dispersed polymer phase acts as nucleating sites producing foams with smaller cell sizes. Owing to the incompatibility between both the polymers, the best tensile and impact properties are obtained for neat polymers. Simple emiempirical models are proposed to predict the tensile and impact properties of the foams.
Tags from this library: No tags from this library for this title. Log in to add tags.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Item type Current library Collection Call number Status Date due Barcode
Documentos solicitados Documentos solicitados CICY Documento préstamo interbibliotecario Ref1 B-14275 (Browse shelf(Opens below)) Available

Blends of high-density polyethylene and polypropylene are foamed by means of extrusion using azodicarbonamide as a chemical blowing agent to study the effect of blending on the morphological and mechanical properties. At 0.5 wtpercent of blowing agent, optimum foam density is found to be around 417 kg/m3 for each blend composition, but the average cell size ranges between 130 and 301 mm depending on the blend composition. It is believed that the dispersed polymer phase acts as nucleating sites producing foams with smaller cell sizes. Owing to the incompatibility between both the polymers, the best tensile and impact properties are obtained for neat polymers. Simple emiempirical models are proposed to predict the tensile and impact properties of the foams.

There are no comments on this title.

to post a comment.