1987
DOI: 10.1007/bf01332684
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Stress relaxation, creep, and internal stresses in high density polyethylene filled with calcium carbonate

Abstract: The effect of filling high density polyethylene (HDPE) with calcium carbonate (up to 50% by weight) on the stress relaxation and the creep in uniaxial extension at room temperature was investigated. The addition of CaCO 3 was found to have a strong influence on the flow behaviour of HDPE. In particular, it was observed that the internal stress level, calculated from relaxation data, increased markedly with the filler content. The reduction in creep rate of the filled samples suggested that the CaCO3-particles … Show more

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Cited by 17 publications
(19 citation statements)
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“…Three different loads previously dried on 4 Å molecular sieves. 1-Octene (99%, Aldrich) was dried overnight over alumina were used: 2.16, 10.00, and 21.60 kg, as referred to as MI 2 , MI 10 , and MI 21 , respectively. The repreviously activated by heating at 240ЊC for 24 h, further treated overnight with powdery CaH 2 and sults was expressed in g/10 min.…”
Section: Methodsmentioning
confidence: 99%
“…Three different loads previously dried on 4 Å molecular sieves. 1-Octene (99%, Aldrich) was dried overnight over alumina were used: 2.16, 10.00, and 21.60 kg, as referred to as MI 2 , MI 10 , and MI 21 , respectively. The repreviously activated by heating at 240ЊC for 24 h, further treated overnight with powdery CaH 2 and sults was expressed in g/10 min.…”
Section: Methodsmentioning
confidence: 99%
“…The importance of these interactions, with regard to the properties of the composite, constitute an important area of current research. It was furthermore concluded in the above work that the effect of these interactions became more pronounced at longer loading times, at higher strain levels and at higher filler concentrations [17]. If the contributions to the internal stress level from the matrix and the filler can be determined, then that part of the internal stress associated with the situation at the interface can be evaluated and could possibly be used for characterizing interfacial interactions with regard to long-term mechanical properties.…”
Section: Introductionmentioning
confidence: 97%
“…In an earlier work [17] dealing with the viscoelastic properties of HDPE-CaCO3 composites there were indications that the internal stress was influenced not only by the properties of the matrix and the filler content but also by interactions at the interface. The importance of these interactions, with regard to the properties of the composite, constitute an important area of current research.…”
Section: Introductionmentioning
confidence: 97%
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