Structure and mechanical properties of polystyrene foams made through microcellular injection molding via control mechanisms of gas counter pressure and mold temperature

International Communications in Heat and Mass Transfer

Volumn 39, Issue 8, 2012, Pages 1125-1131

  Chen, Shia Chung ^a   Liao, Won Hsion ^b   Chien, Rean Der ^b  

^a CHUNG YUAN CHRISTIAN UNIVERSITY   (Taiwan)

^b TAOYUAN INNOVATION INSTITUTE OF TECHNOLOGY   (Taiwan)

Author keywords

Cell size; Gas counter pressure; Mechanical property; Microcellular injection molding; Mold temperature control; Skin thickness

Indexed keywords

CELL SIZE; GAS COUNTERS; MICROCELLULAR INJECTION MOLDING; MOLD TEMPERATURES; SKIN THICKNESS;

CELLS; CONTROL SYSTEMS; CYTOLOGY; GAS FOAMING; GASES; IMPACT STRENGTH; INJECTION MOLDING; MECHANICAL PROPERTIES; MICROCELLULAR RADIO SYSTEMS; MOLDS; POLYSTYRENES; TEMPERATURE CONTROL; TENSILE STRENGTH;

BIOMECHANICS;

EID: 84865372228     PISSN: 07351933     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.icheatmasstransfer.2012.06.015     Document Type: Article

References (25)

1. Martini J.E., Waldman F.A., Suh N.P. The production and analysis of microcellular thermoplastic foam. SPE ANTEC Technical Papers 1982, 28:674-676.
2. Suh N.P. Innovation in Polymer Processing-Molding 1996, 93-149. Hanser Gardner, Munich.
3. Colton J.S., Suh N.P. Nucleation of microcellular foam: theory and practice. Polymer Engineering and Science 1987, 27:500-503.
4. Xu J., Pierick D. Microcellular Foam Processing in Reciprocating-screw Injection Molding Machines. Trexel Technical Report 2001, 152-156. Trexel Incorporation.
5. Collias D.I., Baird D.G., Borggreve R. Impact toughening of polycarbonate by microcellular foaming. Polymer 1994, 25:3978-3983.
6. Collias D.I., Baird D.G. Tensile toughness of microcellular foam of polystyrene, styrene-acrylonitrile copolymer, and polycarbonate, and the effect of dissolved gas on the tensile toughness of the same polymer matrices and microcellular foams. Polymer Engineering and Science 1995, 35:1167-1177.
7. Goel S.K., Beckman E.J. Generation of microcellular polymeric foams using supercritical carbon dioxide. II: Cell growth and skin formation. Polymer Engineering and Science 1994, 34:1148-1156.
8. Kumar V. Microcellular plastics: does microcellular structure always lead to an improvement in impact properties. SPE ANTEC Technical Papers 2002, 60:1892-1896.
9. Xu J., Pierick D. Microcellular foam processing in reciprocating-screw injection molding machine. Journal of Injection Molding Technology 2001, 5:152-159.
10. Matuana L.M., Park C.B., Balatinecz J.J. Structures and mechanical properties of microcellular foamed polyvinyl chloride. Cellular Polymers 1998, 17(1):1-16.
11. Matuana L.M., Park C.B., Balatinecz J.J. Processing and cell morphology relationships for microcellular foamed PVC/wood-fiber composites. Polymer Engineering and Science 1997, 37(7):1137-1147.
12. Matuana L.M., Mohanty A.K., Misra M. PPS-20 Symposium Paper No.125 2004, University of Akron.
13. Okamoto K.T. Microcellular Processing 2003, Hanser Gardner, Munich.
14. Lee J., Turng L.S. A novel method for improving the surface quality of microcellular injection molded parts. Polymer 2011, 52:1436-1446.
15. Turng L.S., Khabas H. Development of a hybrid solid-microcellular co-injection molding process. International Polymer Processing 2004, 19:77-86.
16. Chen H.L., Chien R.D., Chen S.C. Using thermally insulated polymer film for mold temperature control to improve surface quality of microcellular injection molded parts. International Communications in Heat and Mass Transfer 2008, 35(8):991-994.
17. Chen S.C., Lin Y.W., Chien R.D. Study of variable mold temperature to improve surface quality of microcellular injection molded parts using induction heating technology. Advances in Polymer Technology 2009, 27(4):224-232.
18. Cha S.W., Yoon J.D. The relationship of mold temperatures and swirl marks on the surface of microcellular plastics. Polymer-Plastics Technology and Engineering 2005, 44:795-803.
19. Semerdjiev S. Thermoplastische Strukturschaumstoffe 1980, VEB Deutscher Verlag für Grundstoffindustrie, Leipzig.
20. Bledzki A.K. Microcellular Moulding with Gas Counter Pressure Using Physical Blowing Agent 2005, 257-260. Trans Tech Publication, Zurich, Switzerland.
21. Michaeli W., Cramer A. Increasing the feasible bonding strength in micro assembly injection molding using surface modifications. SPE ANTEC Technical Papers 2006, 64:1290-1294.
22. Yoon J.D., Hing S.K., Kim J.H., Cha S.W. A mold surface treatment for improving surface finish of injection molded microcellular. Cellular Polymers 2004, 23:39-47.
23. Andrzej K.B., Hendrik K., Georg S., Peter E. Polycarbonate microfoams with a smooth surface and higher notched impact strength. Journal of Cellular Plastics 2004, 40:489-496.
24. Chen S.C., Hsu P.S., Lin Y.W. Establishment of gas counter pressure technology and its application to improve the surface quality of microcellular injection molded part. International Polymer Processing 2011, 26:275-282.
25. American Society for Testing and Materials, ASTM Annual book of standard 1978, Philadephia, PA.