An evaluation of the cavity transfer mixer for the extrusion of rigid PVC on both single and twin screw extruders

Gale, G. M.

doi:10.1002/vnl.730090207

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The development of the CTM was based on the theoretical work of Spencer and Wiley (2) and the experimental work of Ng and Erwin (3). Since its invention, the CTM has formed the subject of many works primarily concerned to study experimentally its mixing efficiency for various applications (4)(5)(6)(7)(8)(9). One exception is the work of Lin (101, who tried to simulate the overall patterns in the CTM by using in a first approximation a variable annular mixer model.…”

Section: Introductionmentioning

confidence: 99%

Flow field analysis of a cavity transfer mixer

Wang

Manas‐Zloczower

1994

Polymer Engineering & Sci

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The cavity transfer mixer (CTM) was primarily designed as a distributive mixing device to be used as an add-on unit to existing extruders. In determining the CTM overall mixing efficiency as well as its potential use for various applications, the flow patterns/characteristics within this mixer must be well understood. In this work, a fluid dynamics analysis package, FIDAP, based on the finite element method was employed to simulate the flow patterns in a CTM with 6 rows and 4 cavities per row. A 3D, isothermal flow analysis was carried out and the fluid of choice was a flexible polyvinylchloride whose rheological behavior is described by a power-law model fluid. The flow field was characterized in terms of velocity profiles, pressure distributions, shear rates/shear stresses generated and a parameter A quan-g the elongational flow components. The results of the flow simulations were compared with experimental data. The CTM potential use for dispersive mixing was discussed.

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Section: Introductionmentioning

confidence: 99%

Flow field analysis of a cavity transfer mixer

Wang

Manas‐Zloczower

1994

Polymer Engineering & Sci

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The effects of processing on the mechanical properties of a polyolefin blend

Flaris

Stachurski

1992

Polymer International

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The procedure employed to prepare blends plays a significant role on the ultimate morphological and mechanical properties of the blend. This was demonstrated through the use of a styrene‐ethylene/butylene‐styrene (SEBS) triblock copolymer as a compatibilizer for isotactic polypropylene and linear lowdensity polyethylene. The considerable increases in impact strength for the blends containing the higher percentages of SEBS are related to the magnitude of plastic deformation observed in the matrix and to the size of the occlusions.

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An evaluation of the cavity transfer mixer for the extrusion of rigid PVC on both single and twin screw extruders

Abstract: PVC powder compound fed into single-and twin-screw extruders retrofitted with cavity transfer mixers improved PVC grain fusion. Consequent improvements in appearance and properties ought to reduce current tight comprises that must be made between materials costs, output rate, and quality.

Cited by 2 publications

References 2 publications

Flow field analysis of a cavity transfer mixer

Flow field analysis of a cavity transfer mixer

The effects of processing on the mechanical properties of a polyolefin blend

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