Experimental and numerical analysis of bubble nucleation in foaming polymer

Jingkui Yang; Tuanhui Jiang; Bujin Liu; Chun Zhang; Xiangbu Zeng; Li He; Wei Gong

Materials & Design (May 2021)

Experimental and numerical analysis of bubble nucleation in foaming polymer

Jingkui Yang,
Tuanhui Jiang,
Bujin Liu,
Chun Zhang,
Xiangbu Zeng,
Li He,
Wei Gong

Affiliations

Jingkui Yang: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China; National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, PR China
Tuanhui Jiang: National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, PR China
Bujin Liu: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China; National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, PR China
Chun Zhang: College of Materials and Metallurgy, Guizhou Institute of Technology, Guiyang 550003, Guizhou, PR China
Xiangbu Zeng: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China; National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, PR China
Li He: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China; National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, PR China; Corresponding authors at: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China.
Wei Gong: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China; Corresponding authors at: College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, PR China.

Journal volume & issue: Vol. 203
p. 109577

Abstract

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This paper investigates the bubble nucleation of polymer (LDPE) foams using nucleation theory and establishes a mathematical model based on in-situ observations and measurements. The effects of different foaming agent contents and shot sizes on bubble nucleation were studied in an injection foaming experiment and a new mathematical model describing the bubble nucleation kinetics was obtained based on classical nucleation theory. The model fittings were obtained for different experimental conditions. The process of foaming nucleation could be characterized intuitively through this model and can be used as a general form for other nucleation processes.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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