scholarly journals Effect of Conductive Carbon Black on Mechanical Properties of Aqueous Polymer Binders for Secondary Battery Electrode

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1500 ◽  
Author(s):  
Hongjiu Hu ◽  
Bao Tao ◽  
Yaolong He ◽  
Sihao Zhou
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Weight Ratio ◽  
Styrene Butadiene Rubber ◽  
Characteristic Relaxation Time ◽  
Butadiene Rubber ◽  
Interface Failure ◽  
Polymer Binders ◽  
Aqueous Polymer ◽  
Secondary Battery

To predict the cyclic stability of secondary battery electrodes, the mechanical behaviors of polymer binders and conductive composites (BCC) is of great significance. In terms of uniaxial tension, tensile stress relaxation, and bonding strength tests, the present study encompasses a systematic investigation of the mechanical properties of two typical aqueous binders with different contents of Super-S carbon black (SS) under a liquid electrolyte. Meanwhile, the microstructure of cured film and the surface morphology of the bonding interface are investigated in detail. When the weight ratio of SS increases from 0% to 50%, the cured BCC films manifest a higher ratio of tensile strength to modulus and a shorter characteristic relaxation time. Moreover, suitable loadings of SS can improve the tensile shear strength and remarkably reduce the percentage of interface failure of aqueous polymer-bonded Cu current collector. Nevertheless, an excess of carbon black amount cannot maintain its enhancing effect and can even impair the adhesive layer. Finally, a sodium alginate-based polymer composite holds much more superior mechanical properties than the mixture of sodium carboxymethyl cellulose and styrene-butadiene rubber at the same content of carbon black. Noticeably, the two kinds of aqueous polymer doped by 50 wt % of SS exhibit the best adhesive properties.

Effects of Carbon Black and Carbon Nanotube on Mechanical and Thermal Properties of 80NR/20SBR Composites

2010 ◽  
Vol 654-656 ◽  
pp. 2783-2786 ◽  
Author(s):  
Anyaporn Boonmahitthisud ◽  
Zheng Hua Song
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Carbon Nanotube ◽  
Carbon Black ◽  
Testing Machine ◽  
Weight Ratio ◽  
Styrene Butadiene Rubber ◽  
Mechanical And Thermal Properties ◽  
Butadiene Rubber ◽  
Dynamic Mechanical

This work aims to investigate the effects of carbon black (CB) and carbon nanotube (CNT) on mechanical properties and thermal behaviors of natural rubber (NR)/styrene butadiene rubber (SBR) blend at NR/SBR weight ratio of 80/20. CB loadings from 3-9 phr and CNT with 0.1-0.4 phr loadings were used as fillers in this study. The composites were prepared by latex compounding method. The specimens were examined for their tensile and dynamic mechanical properties and thermal stability using the universal testing machine, dynamic mechanical analyzer and thermal gravimetric analyzer, respectively. The tensile strength and modulus of the composites were improved as a result of the incorporation of CB and CNT. Dynamic mechanical analysis showed that the CB and CNT filled composites possessed high stiffness and low damping characteristics. Thermal stability of the composites was also proved to be better than the unfilled-rubber blend.

scholarly journals Itaconate Based Elastomer as a Green Alternative to Styrene–Butadiene Rubber for Engineering Applications: Performance Comparison

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1527
Author(s):  
Liwei Li ◽  
Haijun Ji ◽  
Hui Yang ◽  
Liqun Zhang ◽  
Xinxin Zhou ◽  
...  
Keyword(s):  
Carbon Black ◽  
High Performance ◽  
Weight Ratio ◽  
Rolling Resistance ◽  
Performance Comparison ◽  
Superior Performance ◽  
Feed Ratio ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Styrene Butadiene

In response to increasingly stringent requirements for the sustainability and environmental friendliness of the rubber industry, the application and development of bio-based elastomers have received extensive attention. In this work, we prepared a new type of bio-based elastomer poly(dibutyl itaconate-butadiene) copolymer (PDBIB) nanocomposite using carbon black and non-petroleum-based silica with a coupling agent. Using dynamic thermodynamic analysis (DMTA) and scanning electron microscope (SEM), we studied the effects of feed ratio on dynamic mechanical properties, micro morphology, and filler dispersion of PDBIB composites. Among them, silica-reinforced PDBIB60 (weight ratio of dibutyl itaconate to butadiene 40/60) and carbon black-reinforced PDBIB70 (weight ratio of dibutyl itaconate to butadiene 30/70) both showed excellent performance, such as tensile strength higher than 18 MPa and an elongation break higher than 400%. Compared with the widely used ESBR, the results showed that PDBIB had better rolling resistance and heat generation than ESBR. In addition, considering the development of green tires, we compared it with the solution polymerized styrene–butadiene rubber with better comprehensive performance, and analyzed the advantages of PDBIB and the areas to be improved. In summary, PDBIB prepared from bio-based monomers had superior performance and is of great significance for achieving sustainable development, providing a direction for the development of high-performance green tire and holding great potential to replace petroleum-derived elastomers.

Mechanical properties and thermal aging behaviour of polyisoprene/polybutadiene/styrene-butadiene rubber ternary blend reinforced with carbon black

2016 ◽  
Vol 98 ◽  
pp. 126-133 ◽  
Author(s):  
Slaviša Jovanović ◽  
Suzana Samaržija-Jovanović ◽  
Gordana Marković ◽  
Vojislav Jovanović ◽  
Tijana Adamović ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Thermal Aging ◽  
Styrene Butadiene Rubber ◽  
Ternary Blend ◽  
Butadiene Rubber ◽  
Styrene Butadiene

ULTRASONIC AIDED EXTRUSION OF CARBON BLACK-FILLEDSBR COMPOUNDS

2011 ◽  
Vol 84 (1) ◽  
pp. 55-73 ◽  
Author(s):  
Jaesun Choi ◽  
Avraam I. Isayev
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Styrene Butadiene Rubber ◽  
Strong Interactions ◽  
Butadiene Rubber ◽  
Single Screw Extrusion ◽  
Screw Extrusion ◽  
Tan Δ ◽  
Induction Times ◽  
Styrene Butadiene

Abstract Ultrasonically assisted single screw extrusion of carbon black (CB)-filled styrene–butadiene rubber (SBR) compounds up to 60 phr was carried out and its processing characteristics were measured. The effects of ultrasonic amplitude on rheology, extractable amount, vulcanization behavior, mechanical properties, abrasion, electrical resistivity, and morphology were investigated. Increasing ultrasonic amplitude led to a reduction of extractable content with the effect diminishing with increasing CB loading. Treated compounds showed an increase in viscosity at certain amplitudes. Cure curves revealed reduced induction times with increasing amplitude, except at the highest CB content. The maximum torque of the cure curve, crosslink density, and mechanical properties of vulcanizates all showed an increase at certain ultrasonic amplitudes. An increase in the glass transition temperature (Tg) and a decrease in tan δ at Tg were observed with increasing amplitude. Ultrasonically treated unfilled and CB-filled compounds led to vulcanizates with significant and slight improvements in abrasion, respectively. Ultrasonic treatment caused a significant reduction in the electrical percolation threshold of vulcanizates. Morphological study by atomic force microscope revealed a creation of unique CB agglomerates, suggesting the strong interactions between the SBR and CB aggregates in treated compounds, leading to reinforcing effects in vulcanizates.

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