Improved Silica Dispersibility in Silica-rubber Compounds for a Tire Tread by Using an Itaconic Acid-based Polymeric Dispersant
- 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
- Issue Date
- Jan-2021
- Publisher
- KOREAN FIBER SOC
- Keywords
- Wet masterbatch; Silica; Styrene butadiene rubber; Dispersants; Itaconic acid
- Citation
- FIBERS AND POLYMERS, v.22, no.1, pp.196 - 204
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- FIBERS AND POLYMERS
- Volume
- 22
- Number
- 1
- Start Page
- 196
- End Page
- 204
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/488
- DOI
- 10.1007/s12221-021-9355-z
- ISSN
- 1229-9197
- Abstract
- 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.
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