scholarly journals Influence of kaolinite particle size on cross-link density, microstructure and mechanical properties of latex blending styrene butadiene rubber composites

2015 ◽  
Vol 57 (3) ◽  
pp. 350-358 ◽  
Author(s):  
Yude Zhang ◽  
Qinfu Liu ◽  
Jingjing Xiang ◽  
Ray L. Frost
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Cross Link ◽  
Rubber Composites ◽  
Link Density ◽  
Cross Link Density ◽  
Styrene Butadiene ◽  
Kaolinite Particle

scholarly journals Influence of trans-polyoctylene rubber content on styrene-butadiene rubber properties

2020 ◽  
Vol 13 (1) ◽  
pp. 1-5
Author(s):  
Patrik Macúrik ◽  
Rafal Anyszka ◽  
Ivan Hudec ◽  
Terézia Malčeková ◽  
Ján Kruželák
Keyword(s):  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Curing Time ◽  
Cross Link ◽  
Rubber Content ◽  
Elongation At Break ◽  
Rubber Compounds ◽  
Link Density ◽  
Cross Link Density ◽  
Styrene Butadiene

AbstractThe study was focused on the investigation of trans-polyoctylene (TOR) influence on cross-linking as well as mechanical and rheological properties of rubber compounds based on styrene-butadiene rubber (SBR). SBR was compounded with different proportions of TOR in the concentration range from 0 to 30 phr. Integration of TOR into rubber leads to the prolongation of the optimum curing time and scorch time and thus the decrease of the curing rate. Higher content of TOR led to less viscous rubber due to the plasticizing effect. Cross-link density of vulcanizates was reduced, which correlates with higher elongation at break. Tensile strength and hardness of vulcanizates increased with the increasing TOR content, probably due to the increasing amount of the crystalline phase.

scholarly journals Mechanical Properties and Cross-Link Density of Styrene–Butadiene Model Composites Containing Fillers with Bimodal Particle Size Distribution

2012 ◽  
Vol 45 (16) ◽  
pp. 6504-6515 ◽  
Author(s):  
A. Mujtaba ◽  
M. Keller ◽  
S. Ilisch ◽  
H.-J. Radusch ◽  
T. Thurn-Albrecht ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Cross Link ◽  
Link Density ◽  
Cross Link Density ◽  
Styrene Butadiene

Rubber magnets cured with peroxide and coagents

2019 ◽  
Vol 52 (3) ◽  
pp. 253-270
Author(s):  
Andrea Kvasničáková ◽  
Ján Kruželák ◽  
Elena Medlenová ◽  
Rastislav Dosoudil ◽  
Ivan Hudec ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Styrene Butadiene Rubber ◽  
Cross Linking ◽  
Butadiene Rubber ◽  
Cross Link ◽  
Magnetic Composites ◽  
Peroxide Curing ◽  
Link Density ◽  
Cross Link Density ◽  
Styrene Butadiene

Barium ferrite in constant amount (50 phr) was incorporated into styrene-butadiene rubber to prepare rubber magnetic composites. Dicumyl peroxide was used as a curing agent for cross-linking of the prepared composites. Four different types of low-molecular-weight organic compounds were applied as coagents to enhance the efficiency of cross-linking process and to improve the compatibility between the rubber and the filler on the interphase. The main goal of this work was to investigate the influence of the composition of peroxide curing system on cross-link density, physical–mechanical and magnetic properties of the composites. The results revealed that the type and amount of coagents have no influence on magnetic properties of the rubber magnets. On the other hand, cross-link density and physical–mechanical properties were significantly dependent on the composition of curing system. The increase of tensile strength can be attributed to the improvement of adhesion on the interphase filler–rubber due to the presence of coagents.

Barium and strontium ferrite-filled composites based on NBR and SBR

2018 ◽  
Vol 51 (5) ◽  
pp. 421-439 ◽  
Author(s):  
Ján Kruželák ◽  
Martina Matvejová ◽  
Rastislav Dosoudil ◽  
Ivan Hudec
Keyword(s):  
Barium Ferrite ◽  
Strontium Ferrite ◽  
Styrene Butadiene Rubber ◽  
Magnetic Characteristics ◽  
Butadiene Rubber ◽  
Magnetic Composites ◽  
Link Density ◽  
Cross Link Density ◽  
The Cross ◽  
Styrene Butadiene

In the first part of the research, rubber magnetic composites were prepared by incorporation of strontium and barium ferrite in concentration scale ranging from 0 to 200 phr into rubber matrices based on acrylonitrile–butadiene rubber and styrene–butadiene rubber. The main objective was to investigate the influence of the type and content of magnetic filler on the cross-link density, physical–mechanical and magnetic characteristics of the prepared composites. In the second part of the study, the content of magnetic fillers was kept on constant level—200 phr and the main aim was to investigate the change in mutual combination of both fillers on the cross-linking and properties of the rubber magnets. The results revealed that both fillers show reinforcement effect in the rubber matrices. The higher tensile strength of composites was achieved by application of barium ferrite. Magnetic properties of composite materials were significantly influenced by magnetic characteristics of magnetic fillers. Higher remanent magnetic induction of barium ferrite was reflected in higher remanent magnetization of the equivalent composites. On the other hand, higher coercivity of strontium ferrite resulted in higher coercivity of strontium ferrite-filled composites.

scholarly journals Influence of Eco-Friendly Processing Aids on Silica-Based Rubber Composites

2020 ◽  
Vol 10 (20) ◽  
pp. 7244
Author(s):  
Sung Ho Song
Keyword(s):  
Mechanical Properties ◽  
Rolling Resistance ◽  
Fatigue Properties ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Dispersing Agent ◽  
Styrene Butadiene ◽  
Processing Aids

As eco-friendly “green tires” are being developed in the tire industry, conventionally used carbon black is being replaced with silica in rubber compounds. Generally, as a lubricant and dispersing agent, processing aids containing zinc ions have been employed as additives. However, as zinc is a heavy metal, alternative eco-friendly processing aids are required to satisfy worldwide environmental concerns. Furthermore, non-toxic, degradable, and renewable processing aids are required to improve the mechanical properties of the rubber composites. In this study, we evaluated the effects of diverse silica-based processing aids containing hydrocarbon, benzene, and hydroxyl functional groups on the mechanical properties of rubber composites. Among them, rubber composites that used amphiphilic terpene phenol resin (TPR) with hydrophilic silica showed compatibility with the hydrophobic rubber matrix and were revealed to improve the mechanical and fatigue properties. Furthermore, owing to the enhanced dispersion of silica in the rubber matrix, the TPR/styrene butadiene rubber composites exhibited enhanced wet grip and rolling resistance. These results indicated that TPR had multifunctional effects at low levels and has the potential for use as a processing aid in silica-based rubber composites in tire engineering applications.

scholarly journals Application of Peroxide Curing Systems in Cross-Linking of Rubber Magnets Based on NBR and Barium Ferrite

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Ján Kruželák ◽  
Andrea Kvasničáková ◽  
Elena Medlenová ◽  
Rastislav Dosoudil ◽  
Ivan Hudec
Keyword(s):  
Mechanical Properties ◽  
Barium Ferrite ◽  
Cross Linking ◽  
Butadiene Rubber ◽  
Cross Link ◽  
System Composition ◽  
Peroxide Curing ◽  
Link Density ◽  
Cross Link Density ◽  
Curing Systems

Rubber magnetic composites were prepared by incorporation of barium ferrite in constant amount—50 phr into acrylonitrile-butadiene rubber. Dicumyl peroxide as the curing agent was used for cross-linking of rubber magnets alone, or in combination with four different types of co-agents. The main aim was to examine the influence of curing system composition on magnetic and physical-mechanical properties of composites. The cross-link density and the structure of the formed cross-links were investigated too. The results demonstrated that the type and amount of the co-agent had significant influence on cross-link density, which was reflected in typical change of physical-mechanical properties. The tensile strength increased with increasing amount of co-agents, which can be attributed to the improvement of adhesion and compatibility on the interphase filler-rubber due to the presence of co-agents. Magnetic characteristics were found not to be influenced by the curing system composition. The application of peroxide curing systems consisting of organic peroxide and co-agents leads to the preparation of rubber magnets with not only good magnetic properties but also with improved physical-mechanical properties, which could broaden the sphere of their application uses.

Processibility and Mechanical Properties of Mullite-Filled Styrene Butadiene Rubber Composites

2011 ◽  
Vol 284-286 ◽  
pp. 401-410
Author(s):  
Qiong Qiong Liu
Keyword(s):  
Mechanical Properties ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Precipitated Silica ◽  
Roll Mill ◽  
Silane Coupling ◽  
Styrene Butadiene ◽  
Reinforcing Filler

Mullite (3A12O3·2SiO2) is an aluminosilicate ceramic of great technological importance. We investigated its potential as fillers in rubber. Mullites untreated or treated with 3% γ-mecapto-propyltrimethoxysilane (A-189) were added into styrene-butadiene rubber (SBR) materials on a laboratory-sized two-roll mill. For comparison, commercial precipitated silica was also used. The effect of these fillers on the cure characteristics, processibility and mechanical properties of SBR at various loadings, ranging from 0 to 50 phr was investigated. The results showed that mullite was a semi-reinforcing filler for SBR materials and exhibits better overall cure properties, lower Mooney viscosity, lower tensile set, better resilience as compared to precipitated silica, while it is inferior to precipitated silica especially with regard to tensile strength, tear strength and abrasion resistance. The presence of the silane coupling agent can enhance mechanical properties of filled SBR vulcanizates to some extent.

Fabrication of Sulfonated Bamboo Charcoal-Chitosan (sBC-CS) Hybrid and its Applications for Reinforcement of Styrene-Butadiene Rubber

2017 ◽  
Vol 872 ◽  
pp. 160-164
Author(s):  
Xiang Xu Li ◽  
Ur Ryong Cho
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Filling Ratio ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Bamboo Charcoal ◽  
Rubber Composites ◽  
Vulcanized Rubber ◽  
Styrene Butadiene ◽  
Latex Compounding

Styrene-Butadiene Rubber (SBR) composites incorporated with different fillers with similar filling ratio, were fabricated by latex compounding method. The particle size, tensile strength, abrasion resistance of the vulcanized rubber composites were investigated. The sulfonated bamboo charcoal-chitosan hybrid (sBC-CS) showed great dispersion rate and smaller particle size compared with those of other fillers. In addition, this composite exhibited the best mechanical reinforcing performance among the four fillers.

The interplay between the fragility and mechanical properties of styrene–butadiene rubber composites with unmodified and modified sago seed shell powder

2020 ◽  
Vol 137 (39) ◽  
pp. 49180
Author(s):  
Thulissery Velayudhan Jinitha ◽  
Kodakkat Parambil Safna Hussan ◽  
Thayyil Mohamed Shahin ◽  
Etathil Purushothaman
Keyword(s):  
Mechanical Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Styrene Butadiene ◽  
Shell Powder
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