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Gudiño Rivera J, Hernández Gámez JF, Borjas Ramos JJ, Salinas Hernández M, Sánchez Martínez DI. Effects of residual wax content on the thermal, rheological, and mechanical properties of high‐density polyethylene. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Abstract
When certain critical conditions are exceeded, the flow of a polymer melt becomes unstable, giving rise to particular phenomena that are the subject of this review. These instabilities are a vital industrial problem, as they are the key to productivity of extrusion processes. Indeed, their onset leads to unacceptable products and is thus the upper limit of the processing conditions. They are also a fascinating scientific problem because, although studied and discussed for more than half a century, they are still not fully understood and their mechanisms are still sometimes controversial. In the present literature review, we present an overview of the studies carried out for fifty years, as well as our own opinion on the underlying mechanisms.
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Affiliation(s)
- B. Vergnes
- MINES ParisTech , CEMEF, UMR CNRS 7635, Sophia Antipolis , France
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