ISSN:
1572-8935
Schlagwort(e):
Blend
;
Polypropylene
;
Toughening
;
Propylene-ethylene block copolymer
;
Styrene-ethylene butylene-styrene (SEBS)
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
Notizen:
Abstract Dynamic mechanical properties, low-temperature impact behavior, flexural modulus and heat distortion temperature (HDT) of isotactic polypropylene (i-PP) and propylene-ethylene block copolymer (Co-PP) toughened with styrene-ethylene butylene-styrene triblock copolymer (SEBS), at blending ratios of 0–30 phr, were studied and compared. A scanning electron microscopic morphology study of the impact-fractured surfaces demonstrated the changes in fracture mechanisms at various temperatures and SEBS contents. SEBS remarkably improves the impact endurance in the lower-temperature range when blended with Co-PP in comparison with i-PP, due to the increased compatibility in the interface between SEBS particles and the Co-PP matrix.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01493430
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