Effect of polymer processing aids (PPAs) on the elimination of sharkskin defect in LLDPE extrusion: Influence of die surfacing

被引：0

作者：

Dubrocq-Baritaud, Claire ^{[1
,2
]}

Devaux, Nicolas ^{[2
]}

Darque-Ceretti, Evelyne ^{[1
]}

Vergnes, Bruno ^{[1
]}

机构：

[1] Ecole Mines Paris, CEMEF, CNRS, UMR 7635, BP 207, F-06904 Sophia Antipolis, France

[2] CERDATO, F-27470 Serquigny, France

来源：

XVTH INTERNATIONAL CONGRESS ON RHEOLOGY - THE SOCIETY OF RHEOLOGY 80TH ANNUAL MEETING, PTS 1 AND 2 | 2008年 / 1027卷

关键词：

sharkskin defect; polymer processing aids; fluoropolymer; extrusion;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Since more than twenty years, fluoropolymer-based processing aids (PPAs) are used to efficiently eliminate sharkskin defect in linear polyolefin extrusion. Fluoropolymer PPAS act by coating die surface, inducing wall slip (and thus simultaneously eliminating sharkskin defect) and reducing die pressure. However, their mechanisms of action are not still completely understood, especially the mechanism of deposition. In this paper, we study the influence of die surfacing on PPA kinetics during extrusion process.

引用

页码：60 / +

页数：2

共 9 条

[1] Influence of the nature of fluoropolymer processing aids on the elimination of sharkskin defect in LLDPE extrusion
Dubrocq-Baritaud, C.
Devaux, N.
Darque-Ceretti, E.
Vergnes, B.
INTERNATIONAL JOURNAL OF MATERIAL FORMING, 2008, 1 (Suppl 1) : 727 - 730
[2] Influence of the nature of fluoropolymer processing aids on the elimination of sharkskin defect in LLDPE extrusion
C. Dubrocq-Baritaud
N. Devaux
E. Darque-Ceretti
B. Vergnes
International Journal of Material Forming, 2008, 1 : 727 - 730
[3] The effect of temperature gradients on the sharkskin surface instability in polymer extrusion through a slit die
Miller, Erik
Lee, Sung Jin
Rothstein, Jonathan P.
RHEOLOGICA ACTA, 2006, 45 (06) : 943 - 950
[4] The effect of temperature gradients on the sharkskin surface instability in polymer extrusion through a slit die
Erik Miller
Sung Jin Lee
Jonathan P. Rothstein
Rheologica Acta, 2006, 45 : 943 - 950
[5] The effect of die exit curvature, die surface roughness and a fluoropolymer additive on sharkskin extrusion instabilities in polyethylene processing
Arda, DR
Mackley, MR
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 2005, 126 (01) : 47 - 61
[6] The Effect of Organoclay In Combination with Other Polymer Processing Aids on The Extrusion of Polypropylene
Entezann, Kiana
Mehranpour, Milad
Nazockdast, Hossain
PROCEEDINGS OF THE 36TH CONFERENCE OF THE POLYMER PROCESSING SOCIETY, PPS36, 2023, 2607
[7] PROCESSING HISTORY IN EXTRUSION DIES AND ITS INFLUENCE ON THE STATE OF THE POLYMER EXTRUDATE AT THE DIE EXIT
WINTER, HH
FISCHER, E
POLYMER ENGINEERING AND SCIENCE, 1981, 21 (06): : 366 - 374
[8] The influence of using fluoropolymer based processing additives to improve the extrusion of high viscosity LLDPE resins through narrow die configurations.
Adair, EW
Horns, J
POLYMERS, LAMINATIONS & COATINGS CONFERENCE, BOOKS 1 AND 2, 1998, : 1219 - 1233
[9] Influence of die surface on the efficiency of fluoropolymer processing aids during the extrusion of linear-low density polyethylene
Dubrocq-Baritaud, C.
Darque-Ceretti, E.
Vergnes, B.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 2011, 166 (14-15) : 847 - 858

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