Structure–property relationships of silica/silane formulations in natural rubber, isoprene rubber and styrene–butadiene rubber composites

2019 ◽  
Vol 137 (10) ◽  
pp. 48435 ◽  
Author(s):  
David Lockhorn ◽  
Manfred Klüppel
Keyword(s):  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Structure Property ◽  
Rubber Composites ◽  
Structure Property Relationships ◽  
Styrene Butadiene ◽  
Isoprene Rubber

New insight into structure-property relationships of natural rubber and styrene-butadiene rubber nanocomposites filled with MWCNT

Polymer ◽  
2020 ◽  
Vol 201 ◽  
pp. 122604 ◽  
Author(s):  
Pilar Bernal-Ortega ◽  
M. Mar Bernal ◽  
Antonio González-Jiménez ◽  
P. Posadas ◽  
Rodrigo Navarro ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Rubber Nanocomposites ◽  
Styrene Butadiene ◽  
Insight Into

Insights into Sulfur Vulcanization from QSPR Quantitative Structure-Property Relationships Studies

1999 ◽  
Vol 72 (2) ◽  
pp. 318-333 ◽  
Author(s):  
Fred Ignatz-Hoover ◽  
Alan R. Katritzky ◽  
Victor S. Lobanov ◽  
Mati Karelson
Keyword(s):  
Molecular Descriptors ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Structure Property ◽  
Concerted Mechanism ◽  
Structure Property Relationships ◽  
Quantitative Structure Property Relationships ◽  
Crosslinking Reactions ◽  
Styrene Butadiene ◽  
Aromatic Heterocyclic

Abstract Vulcanization of styrene-butadiene rubber, as accelerated by a series of sulfenamides and sulfenimides prepared from various aromatic heterocyclic thiols and various aliphatic amines, was studied using the curemeter under isothermal conditions. Further studies using MOPAC AM1 semiempirical quantum mechanical calculations and CODESSA QSAR software yielded excellent correlations of molecular descriptors of accelerators or accelerator thiolate zinc complexes to the onset of cure and maximum rate of vulcanization. The QSAR results support previously proposed mechanisms describing the origin of scorch delay for the delayed action, fast curing sulfenamide accelerators. In addition, the results support a carbanionic concerted mechanism for the sulfurization and crosslinking reactions.

Utilization of Bagasse Ash as a Filler in Natural Rubber and Styrene–Butadiene Rubber Composites

2017 ◽  
Vol 43 (1) ◽  
pp. 221-227 ◽  
Author(s):  
Pathompong Pangamol ◽  
Wadsana Malee ◽  
Ruthaichanok Yujaroen ◽  
Pongdhorn Sae-Oui ◽  
Chomsri Siriwong
Keyword(s):  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Styrene Butadiene

Study on silica-based rubber composites with epoxidized natural rubber and solution styrene butadiene rubber

2020 ◽  
pp. 096739112097139
Author(s):  
Sung Ho Song
Keyword(s):  
Natural Rubber ◽  
Rolling Resistance ◽  
Epoxidized Natural Rubber ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Filled Rubber ◽  
Polar Functional Groups ◽  
Styrene Butadiene

Carbon black has been replaced with silica as a reinforcing filler in tire tread compounds. This change has led to lower rolling resistance and improved hysteretic losses of so-called “green tires.” However, the dispersion of silica in the rubber matrix is an important issue due to the poor compatibility of hydrophilic silica with a hydrophobic rubber matrix. Recently, some rubbers with polar functional groups that can interact with silica have been studied to improve the interaction in silica-filled rubber composites. In this work, we fabricated the silica-filled rubber composites with solution styrene butadiene rubber (SSBR) and epoxidized natural rubber (ENR) and evaluated their properties in a silica-containing rubber formulation compared to conventional SBR and NR. The silica-embedded polar rubber matrix exhibits remarkable enhancement in the modulus, tensile strength, and abrasion properties due to an efficient dispersion of the silica and improvement of interfacial interactions with the rubber matrix. The polar rubber composite exhibits an enhanced dry and wet braking and improved rolling resistance due to the improved dispersion of the silica in the rubber matrix. These results show that rubber composites prepared with polar rubbers have great potential for tire engineering applications.

scholarly journals Silica-Milled Paulownia Biochar as Partial Replacement of Carbon Black Filler in Natural Rubber

2019 ◽  
Vol 3 (4) ◽  
pp. 107 ◽  
Author(s):  
Steven C. Peterson
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Partial Replacement ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Renewable Source ◽  
Tire Industry ◽  
Natural Rubber Composites ◽  
Styrene Butadiene

Carbon black (CB) has been the dominant filler in the tire industry for decades. The demand for this petroleum byproduct is ever increasing, although petroleum markets can be volatile due to geopolitical issues. Finding sustainable, renewable substitutes for CB reduces the dependence on petroleum. Biochar is a renewable source of carbon that was studied as a potential CB replacement filler in styrene–butadiene rubber (SBR) composites, but little has been done in terms of natural rubber (NR). In this work, biochar made from fast-growing Paulownia elongata was co-milled with small amounts of silica in order to reduce the larger particle size typical with biochar respective to CB. The resulting silica-milled Paulownia biochar (PB) was then used to replace CB in natural rubber (NR) composites. By using this method to make natural rubber composites with 30% total filler, half of the CB was fully replaced with silica-milled biochar with very little loss (<6%) of tensile strength, and equal or better elongation and toughness compared to the 100% CB-filled control composite.

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