Issue 21, 2020, Issue in Progress

The influence of the curing process on the shear thickening performance of RMG and property optimization

Abstract

A smart composite with both rate-sensitive and magnetic-sensitive properties was prepared by dispersing carbonyl iron powder (CIP) into a silicon–boron copolymer matrix. In addition to following the common preparation procedure, a curing process used in the rubber industry was considered. Several groups of samples were prepared with and without including this curing process. For the samples that underwent the curing process, the absolute shear thickening effect was reduced by less than half compared to the samples that did not undergo the curing process, however, the relative shear thickening effect was increased by up to 6717.50%. In total, 16 groups of samples were tested under different curing conditions, such as different curing times and curing temperatures, to investigate the performance improvement. The results showed that to obtain a better relative shear thickening effect, a curing time of at least 20 min was needed. When the curing temperature was set to 120 °C, the absolute shear thickening effect was maximized. The influences of pyroboric acid and CIPs on the properties of the materials were also studied. Interestingly, the relative magnetorheological effect did not always increase with increasing CIP content. An increase in the amount of pyroboric acid increased the absolute shear thickening effect and decreased the relative shear thickening effect.

Graphical abstract: The influence of the curing process on the shear thickening performance of RMG and property optimization

Article information

Article type
Paper
Submitted
12 Jan 2020
Accepted
18 Mar 2020
First published
25 Mar 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 12197-12205

The influence of the curing process on the shear thickening performance of RMG and property optimization

B. Liu, C. Du, S. Jiang, G. Zhou and J. Sun, RSC Adv., 2020, 10, 12197 DOI: 10.1039/D0RA00319K

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