Foam Extrusion of Elastomers using Water as Physical Blowing Agent

2020 ◽  
pp. 63-78
Author(s):  
Christian Hopmann ◽  
Sebastian Kammer ◽  
Fabian Fey ◽  
Martin Facklam
Keyword(s):  
Foam Extrusion ◽  
Blowing Agent

scholarly journals Viscosity measurement of polypropylene loaded with blowing agents (propane and carbon dioxide) by a novel inline method

2019 ◽  
Vol 56 (1) ◽  
pp. 73-88
Author(s):  
Raphael Vincent ◽  
Martin Langlotz ◽  
Matthias Düngen
Keyword(s):  
Carbon Dioxide ◽  
Single Phase ◽  
Polymer Melt ◽  
Viscosity Measurement ◽  
Viscosity Reduction ◽  
Phase System ◽  
Melt Temperature ◽  
Blowing Agents ◽  
Foam Extrusion ◽  
Blowing Agent

Decreased viscosity due to the influence of blowing agent in thermoplastic polymer melts is a key issue for understanding the process of foam extrusion. In a process for direct foam extrusion, a novel approach for inline viscosity measurement of single-phase systems in single screw extruders is used to experimentally evaluate a viscosity decrease. Two blowing agents (propane and carbon dioxide) are tested for their effect on the viscosity of a polypropylene melt. While mass fractions of blowing agent below [Formula: see text] show little to no effect in regard to viscosity reduction compared to a pure polymer melt, a mass fraction of [Formula: see text] already results in significantly decreased viscosity values. While melt temperature influences the viscosity of the polymer melt, measurements show no significant additional effect in regard to a lowered viscosity of a single-phase system of polymer and fully dissolved blowing agent.

A study of foam extrusion using a chemical blowing agent

1976 ◽  
Vol 20 (6) ◽  
pp. 1583-1595 ◽  
Author(s):  
C. D. Han ◽  
Y. W. Kim ◽  
K. D. Malhotra
Keyword(s):  
Foam Extrusion ◽  
Blowing Agent

Foam extrusion of polypropylene–rice husk composites using CO2 as the blowing agent

2019 ◽  
Vol 55 (4) ◽  
pp. 401-419 ◽  
Author(s):  
Shu-Kai Yeh ◽  
Ssu-Hsuan Yang ◽  
Long Han ◽  
Hung-Yun Liu ◽  
Yi-Syun Liao ◽  
...  
Keyword(s):  
Rice Husk ◽  
Foam Extrusion ◽  
Blowing Agent

Foam Extrusion of Thermoplastic Elastomers Using CO2 as Blowing Agent

1998 ◽  
Vol 34 (4) ◽  
pp. 304-311 ◽  
Author(s):  
D. Kropp ◽  
W. Michaeli ◽  
T. Herrmann ◽  
O. Schröder
Keyword(s):  
Thermoplastic Elastomers ◽  
Foam Extrusion ◽  
Blowing Agent

Foam extrusion of LDPE with solid phase CO2as blowing agent

2015 ◽  
Vol 55 (12) ◽  
pp. 2821-2828 ◽  
Author(s):  
Christian Hopmann ◽  
Sven Hendriks ◽  
Robert Feldges
Keyword(s):  
Solid Phase ◽  
Foam Extrusion ◽  
Blowing Agent
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