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Experimental determination of interfacial slip between polyethylene and thermoplastic elastomers
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10.1122/1.4824136
/content/sor/journal/jor2/57/6/10.1122/1.4824136
http://aip.metastore.ingenta.com/content/sor/journal/jor2/57/6/10.1122/1.4824136

Figures

Image of FIG. 1.
FIG. 1.

Velocity profile with wall slip between parallel-plates.

Image of FIG. 2.
FIG. 2.

Layered sample between parallel-plates. The interface is characterized by a shear stress depending slip velocity .

Image of FIG. 3.
FIG. 3.

Apparent shear rate as a function of shear stress at two gap heights for PE and three TPEs at 180 °C.

Image of FIG. 4.
FIG. 4.

Wall slip velocities calculated according to Eq. (3) for three TPEs. The flattening of the slope at higher stresses is due to edge fracture of the sample.

Image of FIG. 5.
FIG. 5.

Comparison of measured steady shear viscosities (solid symbols) for three TPEs at 180 °C with calculated wall slip corrected viscosities (open symbols with lines) by use of Eq. (5) . The correction is more important for the lower viscosity-type TPEs.

Image of FIG. 6.
FIG. 6.

Steady shear viscosities as a function of shear stress at 180 °C. The data for E880, ESP9213, and E685 are wall slip corrected according to Eq. (5) .

Image of FIG. 7.
FIG. 7.

First normal stress difference as a function of shear rate at 180 °C measured with cone-plate geometry.

Image of FIG. 8.
FIG. 8.

(a) Layered sample between parallel-plates at  = 0 min; (b) two examples for internal Weissenberg effect. View on top of the sample after shearing at 5 s−1 for  = 20 min at 180 °C. Each ring of mixed phase contains a core of pure material with the higher value of .

Image of FIG. 9.
FIG. 9.

Viscosity curves for all six PE/TPE systems at 180 °C. The average viscosity without slip (triangle) was calculated according to Eq. (7) .

Image of FIG. 10.
FIG. 10.

Interfacial slip velocities according to Eq. (8) between PE and TPEs at 180 °C (symbols). Broken lines represent a slope of 1.

Tables

Generic image for table
TABLE I.

Thermoplastic elastomers used.

Generic image for table
TABLE II.

Coefficients for Eq. (9) .

Generic image for table
TABLE III.

Shear rates at applied shear stress of 3000 Pa.

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/content/sor/journal/jor2/57/6/10.1122/1.4824136
2013-10-16
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Experimental determination of interfacial slip between polyethylene and thermoplastic elastomers
http://aip.metastore.ingenta.com/content/sor/journal/jor2/57/6/10.1122/1.4824136
10.1122/1.4824136
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