Direct extrusion of polymer latex emulsions

Nichols, Russell J.; Senn, Richard K.; Kheradi, Farokh

doi:10.1002/adv.1983.060030106

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…Improvements to this model have been proposed progressively [6-12], but it remains as the description in which major technological developments of various decades were based. In contrast with the Maddock/Tadmor mechanism, melting of individual solid pellets suspended in the melt has also been reported [13][14][15]. This was modelled by Huang and Peng and denoted as Dispersive Model [16], while Rauwendaal compared analytically the efficiency of the two melting models [17].…”

Section: Introductionmentioning

confidence: 99%

Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study

Cunha

Gaspar‐Cunha

Covas

2008

MSF

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A prototype modular single screw extruder fitted with a screw extracting device is used to monitor melting of an immiscible polymer blend (PP/PA6, with different weight ratios) in this widely used processing equipment. As anticipated, the phenomena observed are much more complex than those involved in extruding PP or PA6, when the well known Maddock/Tadmor mechanism is valid. Consequently a hybrid melting mechanism, involving Maddock/Tadmor and Dispersive melting sequences, is proposed.

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Section: Introductionmentioning

confidence: 99%

Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study

Cunha

Gaspar‐Cunha

Covas

2008

MSF

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“…For a comprehensive confirmation of the adequacy of the methodology and mathematical model that evaluates the quality of the process and equipment of the co-extrusion processing, we carry out experimental studies on the physical model of the co-extrusion molding process [10,11]. The use of physical modeling for this process allows conducting a more complete study of the influence of various design parameters of the co-extrusion machine and technological parameters of processing on the quality indicators of equipment operation [12,13].…”

Section: The Technique Of Physical Modelingmentioning

confidence: 99%

Determination of Rational Technological Parameters of Co-Extrusion Processing of Secondary Polymeric Materials by the Method of Physical Modeling

Dyadichev

Колесников

Dyadichev

2020

SSP

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The scientific article presents a physical model of the technical process of co-extrusion processing of secondary polymeric materials. A set of tools for automated control and monitoring of the model is considered, which allows to adjust smoothly the values of the rotational speeds of screws of extruders, the temperatures in the material heating zones and the pressure at the outlet of the co-extrusion head. The results of experiments to determine the temperature of the parison over a cooling time and the effect of screw speed and pressure in the head on the quality of mixing components are given. The results obtained by physical modeling confirm the correctness of the authors' calculations performed using the proposed mathematical models. Thus, it is possible to continue research in this direction, the result of which will be new designs of co-extrusion equipment, allowing to process efficiently polymeric waste into new high-quality products.

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