Improved Silica Dispersibility in Silica-rubber Compounds for a Tire Tread by Using an Itaconic Acid-based Polymeric Dispersant

Silica dispersibility in a silica-rubber compound is an important factor determining the braking performance, wear resistance, and rolling resistance of an automobile tire tread. In this study, a poly(itaconic acid-co-acrylamide) (IA-co-AAM) dispersant was synthesized by the copolymerization of IA w...

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Bibliographic Details
Published in:Fibers and polymers 2021, 22(1), , pp.196-204
Main Authors: Shin, Woo Seung, Kwon, Yong Rok, Kim, Jung Soo, Hong, Seok Ju, Kim, Yoo Jin, Lim, Seung Ho, Chang, Young Wook, Kim, Dong Hyun
Format: Article
Language:English
Subjects:
Acrylamide
Braking
Chemistry
Chemistry and Materials Science
Copolymerization
Dispersants
Dispersion
Itaconic acid
Polymer Sciences
Regular Articles
Rolling resistance
Rubber
Silicon dioxide
Viscometers
Wear resistance
Workability
섬유공학
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Summary:Silica dispersibility in a silica-rubber compound is an important factor determining the braking performance, wear resistance, and rolling resistance of an automobile tire tread. In this study, a poly(itaconic acid-co-acrylamide) (IA-co-AAM) dispersant was synthesized by the copolymerization of IA with AAM as a novel silica dispersant for a wet masterbatch (WMB) system. We confirmed the improved silica dispersibility in the silica-rubber compounds via a rubber process analyzer (RPA) and Mooney viscometer (MV). Based on the MV measurements, the values of MV for the silica-SBR compounds using the dispersant decreased by 30 % compared to those in the absence of the dispersant. This showed a positive effect on the rubber processing workability of the silica-SBR compounds. We also evaluated the dynamic viscoelastic properties of the compounds via a dynamic mechanical analyzer (DMA) and found that the rolling resistance of the compounds for the tire tread area also improved.
ISSN:1229-9197
1875-0052
DOI:10.1007/s12221-021-9355-z