An experimental study on one-step and two-step foaming of natural rubber/silica nanocomposites-Reference-Cited by-同舟云学术

An experimental study on one-step and two-step foaming of natural rubber/silica nanocomposites

Published:2020-01-01 Issue:1 Volume:9 Page:427-435
ISSN:2191-9097
Container-title:Nanotechnology Reviews
language:en
Short-container-title:

Author:

Bayat Hossein¹,Fasihi Mohammad¹,Zare Yasser²,Rhee Kyong Yop²

Affiliation:

1. School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran 16846-13114 , Iran

2. Department of Mechanical Engineering, College of Engineering, Kyung Hee University , Yongin 446-701 , Republic of Korea

Abstract

Abstract The curing and cellular structure of natural rubber (NR)/silica composite foams were investigated. The presence of an activator in the rubber formulation significantly lowered the decomposition temperature of the azodicarbonamide foaming agent, which allowed foaming before NR curing. Therefore, two foam methods were designed: foaming initially at 90°C and then curing at 140°C, and foaming and curing simultaneously at 140°C. Two-step foaming generated a lower cell density and higher cell size. Incorporation of nano silica into NR increased the foam density, but decreased the cell size. The higher foaming temperature restricted the bubble growth because of a higher curing rate and inhibited cell coalescence.

Publisher

Walter de Gruyter GmbH

Subject

Surfaces, Coatings and Films,Process Chemistry and Technology,Energy Engineering and Power Technology,Biomaterials,Medicine (miscellaneous),Biotechnology

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