Low density microcellular foam processing in extrusion using CO<SUB><FONT SIZE='-1'>2</FONT></SUB> Export

@article{citeulike:1079487, abstract = {A continuous extrusion process for the manufacture of low-density microcellular polymers is presented. Microcellular polymers are foamed plastics characterized by a cell density greater than 109 cells/cm3 and a fully grown cell size on the order of 10 ?m. Previous research on continuous processing of microcellular polymers has focused on control of microcell nucleation in extrusion. This paper presents an effective means for control of cell growth to achieve a desired expansion ratio with CO2 as a blowing agent in microcellular foam processing. Also, a strategy to prevent deterioration of the cell-population density via cell coalescence during expansion is presented. Promotion of a desired volume expansion ratio and prevention of cell coalescence in microcellular foam processing were experimentally verified. By tailoring the extrusion processing parameters, microcellular HIPS foams with a cell density of 1010 cells/cm3 and a controlled expansion ratio in the range of 1.5 to 23 were obtained.}, address = {Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G8}, author = {Park, Chul B. and Behravesh, Amir H. and Venter, Ronald D.}, citeulike-article-id = {1079487}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/pen.10351}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/108063433/ABSTRACT}, doi = {10.1002/pen.10351}, journal = {Polymer Engineering \& Science}, keywords = {1999, co2, extrusion, foam, lab3, microcellular}, number = {11}, pages = {1812--1823}, posted-at = {2008-12-26 05:54:18}, priority = {2}, title = {Low density microcellular foam processing in extrusion using CO<SUB><FONT SIZE='-1'>2</FONT></SUB>}, url = {http://dx.doi.org/10.1002/pen.10351}, volume = {38}, year = {1998} }

TY - JOUR ID - citeulike:1079487 L3 - citeulike-article-id:1079487 N2 - A continuous extrusion process for the manufacture of low-density microcellular polymers is presented. Microcellular polymers are foamed plastics characterized by a cell density greater than 109 cells/cm3 and a fully grown cell size on the order of 10 ?m. Previous research on continuous processing of microcellular polymers has focused on control of microcell nucleation in extrusion. This paper presents an effective means for control of cell growth to achieve a desired expansion ratio with CO2 as a blowing agent in microcellular foam processing. Also, a strategy to prevent deterioration of the cell-population density via cell coalescence during expansion is presented. Promotion of a desired volume expansion ratio and prevention of cell coalescence in microcellular foam processing were experimentally verified. By tailoring the extrusion processing parameters, microcellular HIPS foams with a cell density of 1010 cells/cm3 and a controlled expansion ratio in the range of 1.5 to 23 were obtained. IS - 11 JF - Polymer Engineering & Science AD - Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada M5S 3G8 EP - 1823 TI - Low density microcellular foam processing in extrusion using CO<SUB><FONT SIZE='-1'>2</FONT></SUB> VL - 38 SP - 1812 KW - 1999 KW - co2 KW - extrusion KW - foam KW - lab3 KW - microcellular AU - Park, Chul AU - Behravesh, Amir AU - Venter, Ronald PY - 1998/// UR - http://dx.doi.org/10.1002/pen.10351 ER -