Cure Characteristics and Mechanical Properties of Maleic Anhydride Grafted Reclaimed Rubber/Styrene Butadiene Rubber Blends

2004 ◽  
Vol 43 (1) ◽  
pp. 245-260 ◽  
Author(s):  
P. A. Nelson ◽  
S. K. N. Kutty
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Cure Characteristics ◽  
Styrene Butadiene

Novel modification of styrene butadiene rubber/acrylic rubber blends to improve mechanical, dynamic mechanical, and swelling behavior for oil sealing applications

2021 ◽  
pp. 096739112110313
Author(s):  
Ahmed Abdel-Hakim ◽  
Soma A el-Mogy ◽  
Ahmed I Abou-Kandil
Keyword(s):  
Mechanical Properties ◽  
Crosslink Density ◽  
Physical And Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Blends ◽  
Dynamic Mechanical ◽  
Oil Resistance ◽  
Styrene Butadiene

Blending of rubber is an important route to modify properties of individual elastomeric components in order to obtain optimum chemical, physical, and mechanical properties. In this study, a novel modification of styrene butadiene rubber (SBR) is made by employing acrylic rubber (ACM) to obtain blends of outstanding mechanical, dynamic, and oil resistance properties. In order to achieve those properties, we used a unique vulcanizing system that improves the crosslink density between both polymers and enhances the dynamic mechanical properties as well as its resistance to both motor and break oils. Static mechanical measurements, tensile strength, elongation at break, and hardness are improved together with dynamic mechanical properties investigated using dynamic mechanical analyses. We also proposed a mechanism for the improvement of crosslink density and consequently oil resistance properties. This opens new opportunities for using SBR/ACM blends in oil sealing applications that requires rigorous mechanical and dynamic mechanical properties.

Effect of Urethane Based Bonding Agent on the Cure Characteristics and Mechanical Properties of Styrene Butadiene Rubber – Whole Tyre Reclaim - Short Nylon Fiber Composite

2002 ◽  
Vol 18 (4) ◽  
pp. 283-296 ◽  
Author(s):  
T.D. Sreeja ◽  
S.K.N. Kutty
Keyword(s):  
Mechanical Properties ◽  
Fiber Composite ◽  
Longitudinal Direction ◽  
Bonding Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Cure Characteristics ◽  
Nylon Fiber ◽  
Short Nylon Fiber ◽  
Styrene Butadiene

The cure characteristics and mechanical properties of short nylon fiber – styrene butadiene rubber/whole tyre reclaim (SBR/WTR) composites with and without an interfacial bonding agent based on 4,4 diphenyl methane diisocyanate and polyethylene glycol (MDI/PEG) have been studied. An 80:40 blend of SBR/WTR reinforced with 20 phr of short nylon fiber has been selected and the MDI/PEG ratio has been changed from 0.67:1 to 2:1. The minimum and maximum torques increased with isocyanate concentration. The scorch time and cure time showed an initial reduction. The cure rate showed an initial improvement. Tensile strength, tear strength and abrasion resistance increased with MDI/PEG ratio, these values were higher in longitudinal direction. Resilience and compression set increased with isocyanate concentration.

scholarly journals Mechanical Properties of Water Purification Industry Used Natural Rubber/Styrene-Butadiene Rubber Blends that Prepared Via Different Sulfur Curing Systems

2020 ◽  
Author(s):  
Wenfa Dong ◽  
Ruogu Tang
Keyword(s):  
Mechanical Properties ◽  
Relative Volume ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Water Industry ◽  
High Modulus ◽  
Elongation At Break ◽  
Tear Strength ◽  
Rubber Blends ◽  
Styrene Butadiene

<div>The water industry used NR was selected for blending with SBR. A series of NR/SBR vulcanizates were prepared through three different vulcanization systems, conventional vulcanization (CV), effective vulcanization (EV) and semi-effective vulcanization (SEV) respectively, basing on each formulation and optimum curing time. We examined the mechanical properties of NR/SBR vulcanizates including tensile strength, tear strength, elongation at break, modulus, Shore A hardnessand and relative volume abrasion. The results indicated that NR/SBR vulcanizates prepared in different systems differed in mechanical properties. Vulcanizates prepared via CV showed higher tensile and tear strength; vulcanizates prepared via EV had high modulus and hardness, and vulcanizates prepared via SEV performed high abrasion resistance. </div>

Cure Characteristics and Mechanical Properties of NR/ SBR Blends Filled with Nano-sized CaCO3

2005 ◽  
Vol 21 (2) ◽  
pp. 101-115
Author(s):  
Chaoying Wan ◽  
Yong Zhang ◽  
Yin Zhu ◽  
Yinxi Zhang
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Stearic Acid ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Cure Rate ◽  
Cure Characteristics ◽  
Cure Time ◽  
Surface Modified ◽  
Styrene Butadiene

Four kinds of nano-sized calcium carbonate (CaCO3) surface-modified with stearic acid, aluminate, titanate and aluminate-titanate complex coupling agents, were used to reinforce natural rubber (NR)/styrene-butadiene rubber (SBR) blends. The effects of surface modification and CaCO3 content on the cure characteristics, swelling behaviour, and mechanical properties of NR/SBR blends were studied. The surface modification of CaCO3 improved the processing and mechanical properties, and the stearic acid coated CaCO3 (SA-CaCO3) had finer dispersion and produced a better reinforcement effect than the other modified CaCO3. Furthermore, a commercial high abrasion furnace carbon black (HAF) was used for comparison. The results showed that both CaCO3 and HAF increased the cure rate, reduced the optimum cure time and improved the mechanical properties of NR/SBR blends at appropriate filler contents. The tensile strength of filled NR/SBR composites reached its maximum value when the SA-CaCO3 content was 50 phr or the HAF content was 30 phr. The modulus at 200%, tear strength, and Shore A hardness of filled NR/SBR composites all increased with increasing filler content. The CaCO3 reinforced the NR/SBR blends to some extent, though it was still not as effective as HAF.

scholarly journals Mechanical Properties of Water Purification Industry Used Natural Rubber/Styrene-Butadiene Rubber Blends that Prepared Via Different Sulfur Curing Systems

2020 ◽  
Author(s):  
Ruogu Tang
Keyword(s):  
Mechanical Properties ◽  
Relative Volume ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Water Industry ◽  
High Modulus ◽  
Elongation At Break ◽  
Tear Strength ◽  
Rubber Blends ◽  
Styrene Butadiene

<div>The water industry used NR was selected for blending with SBR. A series of NR/SBR vulcanizates were prepared through three different vulcanization systems, conventional vulcanization (CV), effective vulcanization (EV) and semi-effective vulcanization (SEV) respectively, basing on each formulation and optimum curing time. We examined the mechanical properties of NR/SBR vulcanizates including tensile strength, tear strength, elongation at break, modulus, Shore A hardnessand and relative volume abrasion. The results indicated that NR/SBR vulcanizates prepared in different systems differed in mechanical properties. Vulcanizates prepared via CV showed higher tensile and tear strength; vulcanizates prepared via EV had high modulus and hardness, and vulcanizates prepared via SEV performed high abrasion resistance. </div>

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