Thermally expandable microcapsules for polymer foaming-Relationship between expandability and viscoelasticity
2009; Wiley; Volume: 50; Issue: 4 Linguagem: Inglês
10.1002/pen.21595
ISSN1548-2634
AutoresYasuhiro Kawaguchi, Daichi Ito, Yoshiyuki Kosaka, M. OKUDO, Takeshi Nakachi, Hiroshi Kake, Jae‐Kyung Kim, Haruo Shikuma, Masahiro Ohshima,
Tópico(s)Polymer composites and self-healing
ResumoPolymer Engineering & ScienceVolume 50, Issue 4 p. 835-842 Article Thermally expandable microcapsules for polymer foaming—Relationship between expandability and viscoelasticity† Yasuhiro Kawaguchi, Yasuhiro Kawaguchi Speciality Chemicals Division (Tokuyama) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorDaichi Ito, Daichi Ito Speciality Chemicals Division (Tokuyama) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorYoshiyuki Kosaka, Yoshiyuki Kosaka Speciality Chemicals Division (Minase) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 2-1, Shimamoto-Cho, Mishima-Gun, Osaka 618-0021, JapanSearch for more papers by this authorMasazumi Okudo, Masazumi Okudo Speciality Chemicals Division (Minase) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 2-1, Shimamoto-Cho, Mishima-Gun, Osaka 618-0021, JapanSearch for more papers by this authorTakeshi Nakachi, Takeshi Nakachi Department of Polymer Production, Tokuyama Sekisui Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorHiroshi Kake, Hiroshi Kake Department of Polymer Production, Tokuyama Sekisui Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorJae Kyung Kim, Jae Kyung Kim Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this authorHaruo Shikuma, Haruo Shikuma Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this authorMasahiro Ohshima, Corresponding Author Masahiro Ohshima [email protected] Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanDepartment of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this author Yasuhiro Kawaguchi, Yasuhiro Kawaguchi Speciality Chemicals Division (Tokuyama) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorDaichi Ito, Daichi Ito Speciality Chemicals Division (Tokuyama) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorYoshiyuki Kosaka, Yoshiyuki Kosaka Speciality Chemicals Division (Minase) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 2-1, Shimamoto-Cho, Mishima-Gun, Osaka 618-0021, JapanSearch for more papers by this authorMasazumi Okudo, Masazumi Okudo Speciality Chemicals Division (Minase) High-Performance Functional Plastics Company, Sekisui Chemical Co., Ltd, 2-1, Shimamoto-Cho, Mishima-Gun, Osaka 618-0021, JapanSearch for more papers by this authorTakeshi Nakachi, Takeshi Nakachi Department of Polymer Production, Tokuyama Sekisui Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorHiroshi Kake, Hiroshi Kake Department of Polymer Production, Tokuyama Sekisui Co., Ltd, 4560, Kaisei-Cho, Shunan, Yamaguchi 746-0006, JapanSearch for more papers by this authorJae Kyung Kim, Jae Kyung Kim Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this authorHaruo Shikuma, Haruo Shikuma Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this authorMasahiro Ohshima, Corresponding Author Masahiro Ohshima [email protected] Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanDepartment of Chemical Engineering, Kyoto University, Kyoto 615-8510, JapanSearch for more papers by this author First published: 15 December 2009 https://doi.org/10.1002/pen.21595Citations: 36 † Part of the paper was presented at the ANTEC meeting (Chicago), 2009. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract A new thermally expandable microcapsule was developed for use with foaming polypropylene (PP) by injection molding and extrusion processes at operating temperatures above 200°C. The microcapsule consists of a blowing agent as the core and a shell polymer. The rheological properties of the shell polymer were controlled by a crosslinking agent to design the expandability and shrinkage. The effects of rheological properties on the expandability and the surface appearance of foam products were thoroughly investigated. It was found that storage modulus G′ and tan δ significantly affected the expandability and shrinkage and were controllable through crosslinking polymerization. Visual observation of batch foaming, rheological measurement, and experiments of foam injection molding and extrusion elucidated the existence of the optimal degree of crosslinking that could realize more than 30% density reduction while maintaining a smoothsurface at PP foam injection molding and extrusion. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers Citing Literature Volume50, Issue4April 2010Pages 835-842 RelatedInformation
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