A method to improve the mechanical performance of styrene-butadiene rubber via vulcanization accelerator modified silica

2015 ◽  
Vol 117 ◽  
pp. 46-53 ◽  
Author(s):  
Bangchao Zhong ◽  
Zhixin Jia ◽  
Yuanfang Luo ◽  
Demin Jia
Keyword(s):  
Mechanical Performance ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Modified Silica ◽  
Styrene Butadiene ◽  
Vulcanization Accelerator

New insight into the flocculation behavior of hydrophilic silica in styrene butadiene rubber composites

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91262-91272 ◽  
Author(s):  
Juqiao Su ◽  
Qi Yang ◽  
Dahang Tang ◽  
Yajiang Huang ◽  
Zhongguo Zhao ◽  
...  
Keyword(s):  
Crack Growth ◽  
Crack Tip ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Modified Silica ◽  
Filled Rubber ◽  
Styrene Butadiene ◽  
Insight Into

We propose that modified silica filled rubber composites with moderate silica flocculation possesses preferable resistance to crack growth by the crack tip deflection mechanism.

PHASE SELECTIVE LOCALIZATION OF FILLER IN TERNARY RUBBER BLENDS

2011 ◽  
Vol 84 (1) ◽  
pp. 41-54 ◽  
Author(s):  
H. H. Le ◽  
S. Ilisch ◽  
D. Heidenreich ◽  
K. Osswald ◽  
H-J. Radusch
Keyword(s):  
Mechanical Performance ◽  
Mixing Time ◽  
Styrene Butadiene Rubber ◽  
Experimental Investigations ◽  
Subsequent Stage ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Selective Localization ◽  
Styrene Butadiene

Abstract The present work introduces a new concept based on the analysis of the rubber–filler gel for the determination of the phase selective filler localization in ternary rubber blends. Natural rubber (NR)/styrene–butadiene rubber (SBR)/ethylene–propylene rubber (EPDM) blends filled with silica were the focus of the experimental investigations. Because of the higher wetting rate of the NR component to silica, in the first stage of the preparation of SBR/NR/EPDM blends, more silica is found in the NR phase than in the SBR and EPDM phase. In the subsequent stage, silica is transferred from the NR phase to the SBR phase until the loosely bound NR-layer at the silica surface is fully replaced by SBR molecules. An extremely low amount of silica was found in the EPDM phase because of the poor EPDM–silica interaction. After a long mixing time, a large amount of silica whose surface was not yet wetted by any rubber phase could be found in the composites that can lead to fatal effects on the mechanical performance of the composites.

Effects of MAH/St grafted nanocellulose on the properties of carbon reinforced styrene butadiene rubber

2019 ◽  
Vol 39 (5) ◽  
pp. 450-458 ◽  
Author(s):  
Yingni Xu ◽  
Caixin Li ◽  
Ju Gu
Keyword(s):  
Mechanical Performance ◽  
Interfacial Interaction ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Strong Interfacial Interaction ◽  
Processing Properties ◽  
Styrene Butadiene ◽  
Vulcanization Process ◽  
Scanning Electron ◽  
Sem Analyses

Abstract Nanocellulose was extracted from bagasse (bagasse nanocellulose, BNC) by hydrolysis with alkali and acid, then grafted by maleic anhydride (MAH) and styrene (St). The modified nanocellulose (BMS) was further investigated to partially replace carbon black (CB) in St butadiene rubber (SBR) composites via coagulation to prepare SBR/BMS/CB composites. Through the comparison of the vulcanization characteristics, processing properties, mechanical properties, and dynamic mechanical performance of them, BMS proved to be more efficient than BNC. The results showed that BMS could activate the vulcanization process, suppress the Payne effect, and increase the modulus and hardness. Moreover, a fine BMS dispersion and strong interfacial interaction were achieved in SBR/BMS/CB composites. The observed reinforcement effects were evaluated based on the results of G′, tanδ and scanning electron microscopy (SEM) analyses of SBR/BMS/CB in comparison with SBR/BNC/CB composites.

scholarly journals Recycling of Waste Tyre into Silica-Rubber Compounds for Green Tyre Application

2021 ◽  
Author(s):  
Joyeeta Ghosh ◽  
Sakrit Hait ◽  
Soumyajit Ghorai ◽  
Dipankar Mondal ◽  
Gert Heinrich ◽  
...  
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Mechanical Performance ◽  
Value Added ◽  
Styrene Butadiene Rubber ◽  
Scale Production ◽  
Butadiene Rubber ◽  
Rubber Compounds ◽  
Styrene Butadiene ◽  
Devulcanized Rubber

Abstract The prevention of detrimental effects to environment, owing to generation of a huge amount of rubber wastes, is a big challenge across the globe that warrants a thorough investigation of recycling and reuses waste of rubber products. In this spirit a sustainable development of a devulcanization process along with the production of value added devulcanized rubber is a task of hours. The present work describes a simultaneous devulcanization and chemical functionalisation process of waste solution styrene butadiene rubber (S-SBR). This kind of rubber is generally used as the main polymer component in silica filled tread rubber compounds for high-performance passenger car tyres. As-grown ethoxy groups on the functionalized devulcanized styrene butadiene rubber (D-SBR) are exploited for the coupling between silica and the devulcanized rubber chains. We compare the mechanical and dynamic mechanical performance of D-SBR with that of virgin SBR control composites. Covalently bonding interfaces developed from the pendent ethoxy groups of D-SBR and silanol groups on the silica surface offer a competitive and promising performance of the D-SBR based composites. We conclude that the present approach can be further utilized for the large-scale production of different rubber products with satisfied elastomeric performance.

scholarly journals Preparation and Performance of Silica/ESBR Nanocomposites Modified by Bio-Based Dibutyl Itaconate

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1820 ◽  
Author(s):  
Haijun Ji ◽  
Hui Yang ◽  
Liwei Li ◽  
Xinxin Zhou ◽  
Lan Yin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rolling Resistance ◽  
Styrene Butadiene Rubber ◽  
Skid Resistance ◽  
Butadiene Rubber ◽  
Modified Silica ◽  
Tan Δ ◽  
Styrene Butadiene ◽  
Hydroxy Groups ◽  
Wet Skid Resistance

Ester-functionalized styrene-butadiene rubber (dibutyl itaconate-styrene-butadiene rubber) (D-ESBR) was synthesized by low-temperature emulsion polymerization using dibutyl itaconate (DBI) as a modified monomer containing ester groups. Nonpetroleum-based silica with hydroxy groups was used as a filler to enhance the D-ESBR, which can provide excellent mechanical properties, low rolling resistance, and high wet skid resistance. During the preparation of the silica/D-ESBR nanocomposites, a hydrogen-bonding interface was formed between the hydroxy groups on the surface of silica and the ester groups in the D-ESBR macromolecules. As the content of ester groups in the D-ESBR increases, the dispersion of silica in the nanocomposites is gradually improved, which was verified by rubber process analyzer (RPA) and scanning electron microscopy (SEM). Overall mechanical properties of the silica/D-ESBR modified with 5 wt % DBI were improved and became superior to that of the non-modified nanocomposite. Compared with the non-modified silica/D-ESBR, the DBI modified silica/D-ESBR exhibited a lower tan δ value at 60 °C and comparable tan δ value at 0 °C, indicating that the DBI modified silica/D-ESBR had lower rolling resistance without sacrificing wet skid resistance.

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