Phosphorylated cardanol prepolymer-grafted carboxylated styrene-butadiene rubber for better processing with enhancing silica filler dispersion

2019 ◽  
pp. 47528 ◽  
Author(s):  
Onkar Prabhavale ◽  
Denial Mahata ◽  
Golok B. Nando
Keyword(s):  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Silica Filler ◽  
Filler Dispersion ◽  
Carboxylated Styrene Butadiene Rubber ◽  
Styrene Butadiene

Dynamic Mechanical and Dielectric Properties of Nanocomposites of Natural Rubber (NR), Carboxylated Styrene Butadiene Rubber (XSBR) Latices and their Blends

2007 ◽  
Vol 80 (4) ◽  
pp. 672-689 ◽  
Author(s):  
Ranimol Stephen ◽  
Sabu Thomas ◽  
K. V. S. N. Raju ◽  
Siby Varghese ◽  
Kuruvilla Joseph ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Dielectric Permittivity ◽  
Natural Rubber ◽  
Storage Modulus ◽  
Viscoelastic Properties ◽  
Volume Resistivity ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Carboxylated Styrene Butadiene Rubber ◽  
Styrene Butadiene

Abstract The viscoelastic and dielectric properties of nano structured layered silicates reinforced natural rubber (NR), carboxylated styrene butadiene rubber (XSBR) and their blends have been analyzed. The viscoelastic properties such as storage modulus, loss modulus, damping behavior and glass transition temperature of nano filled latices have been investigated. Upon the addition of filler, the storage modulus of nanocomposites was found to increase due to the enhancement in stiffness of the material. Due to the restricted mobility of polymer chain segments, the damping values decreased as a function of filler loading. An investigation of the viscoelastic properties revealed that there was a strong interaction between the polymer and the filler. Latex nanocomposites was characterized by X-ray diffraction technique. The enhanced d values indicated the intercalation of polymer chain into the layers of silicates. The dielectric properties of nanocomposites have been investigated as a function of frequency in the range of 50Hz–100KHz. The effect of frequency on dielectric permittivity (Ε′), dielectric loss (Ε″), dissipation factor (tan δ) and volume resistivity (ρv) of latex nanocomposite have been measured under alternating current. The dielectric permittivity of the samples was found to be higher upon the incorporation of nano fillers. The volume resistivity decreased due to the enhanced conductivity of filled samples.

scholarly journals Effect of plain and carboxylated styrene-butadiene rubber on the rheological behavior of silica fume-class G Portland cement slurries

2020 ◽  
Vol 9 (3) ◽  
pp. 5364-5377
Author(s):  
Fabrício de Campos Vitorino ◽  
Jo Dweck ◽  
Liberato Ferrara ◽  
Romildo Dias Toledo Filho
Keyword(s):  
Portland Cement ◽  
Silica Fume ◽  
Rheological Behavior ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Carboxylated Styrene Butadiene Rubber ◽  
Styrene Butadiene

scholarly journals Characterizing Distributions of Tensile Strength and Crack Precursor Size to Evaluate Filler Dispersion Effects and Reliability of Rubber

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 203 ◽  
Author(s):  
Christopher G. Robertson ◽  
Lewis B. Tunnicliffe ◽  
Lawrence Maciag ◽  
Mark A. Bauman ◽  
Kurt Miller ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Average Diameter ◽  
Strength Distribution ◽  
Glass Beads ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Failure Distribution ◽  
Filler Dispersion ◽  
Control Compound ◽  
Styrene Butadiene

Undispersed filler agglomerates or other substantial inclusions/contaminants in rubber can act as large crack precursors that reduce the strength and fatigue lifetime of the material. To demonstrate this, we use tensile strength (stress at break, σb) data from 50 specimens to characterize the failure distribution behavior of carbon black (CB) reinforced styrene-butadiene rubber (SBR) compounds. Poor mixing was simulated by adding a portion of the CB late in the mixing process, and glass beads (microspheres) with 517 μm average diameter were introduced during milling to reproduce the effects of large inclusions. The σb distribution was well described with a simple unimodal Weibull distribution for the control compound, but the tensile strengths of the poor CB dispersion material and the compounds with the glass beads required bimodal Weibull distributions. For the material with the lowest level of glass beads—corresponding to less than one microsphere per test specimen—the bimodal failure distribution spanned a very large range of σb from 13.7 to 22.7 MPa in contrast to the relatively narrow σb distribution for the control from 18.4 to 23.8 MPa. Crack precursor size (c0) distributions were also inferred from the data, and the glass beads introduced c0 values in the 400 μm range compared to about 180 μm for the control. In contrast to σb, critical tearing energy (tear strength) was unaffected by the presence of the CB agglomerates and glass beads, because the strain energy focuses on the pre-cut macroscopic crack in the sample during tear testing rather than on the microscopic crack precursors within the rubber. The glass beads were not detected by conventional filler dispersion measurements using interferometric microscopy, indicating that tensile strength distribution characterization is an important complementary approach for identifying the presence of minor amounts of large inclusions in rubber.

Diffusion and transport through nanocomposites of natural rubber (NR), carboxylated styrene butadiene rubber (XSBR) and their blends

2006 ◽  
Vol 282 (1-2) ◽  
pp. 162-170 ◽  
Author(s):  
R STEPHEN ◽  
S VARGHESE ◽  
K JOSEPH ◽  
Z OOMMEN ◽  
S THOMAS
Keyword(s):  
Natural Rubber ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Carboxylated Styrene Butadiene Rubber ◽  
Styrene Butadiene

Mechanical and viscoelastic behavior of natural rubber and carboxylated styrene-butadiene rubber latex blends

2003 ◽  
Vol 88 (11) ◽  
pp. 2639-2648 ◽  
Author(s):  
Ranimol Stephen ◽  
K. V. S. N. Raju ◽  
Sobha V. Nair ◽  
Siby Varghese ◽  
Zachariah Oommen ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Viscoelastic Behavior ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Latex ◽  
Carboxylated Styrene Butadiene Rubber ◽  
Styrene Butadiene

S114023 Effect of silica filler on crack propagation of styrene butadiene rubber during pattern abrasion

2012 ◽  
Vol 2012 (0) ◽  
pp. _S114023-1-_S114023-4
Author(s):  
hiroshi KAWACHI ◽  
tomoaki IWAI ◽  
yutaka SHOUKAKU
Keyword(s):  
Crack Propagation ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Silica Filler ◽  
Styrene Butadiene
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