Effect of silane coupling agent on vulcanization, network structure, polymer-filler interaction, physical properties and failure mode of mica-filled styrene-butadiene rubber

1987 ◽  
Vol 22 (12) ◽  
pp. 4453-4459 ◽  
Author(s):  
S. Debnath ◽  
S. K. De ◽  
D. Khastgir
Keyword(s):  
Physical Properties ◽  
Failure Mode ◽  
Network Structure ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Polymer Filler ◽  
Silane Coupling ◽  
Styrene Butadiene

Studies of Polymer-Filler Interaction, Network Structure, Physical Properties, and Fracture of Silica-and Clay-Filled EPDM Rubber in the Presence of a Silane Coupling Agent

1983 ◽  
Vol 56 (4) ◽  
pp. 737-773 ◽  
Author(s):  
P. K. Pal ◽  
S. K. De
Keyword(s):  
Physical Properties ◽  
Network Structure ◽  
Coupling Agent ◽  
Crosslink Density ◽  
Silane Coupling Agent ◽  
Interaction Network ◽  
Epdm Rubber ◽  
Polymer Filler ◽  
Silane Coupling ◽  
Tear Properties

Abstract 1. A silane coupling agent (Si-69) reduces the viscosity and increases the scorch lime in silica- and clay-filled EPDM. The cure lime of silica-filled mixes remained unchanged and that of clay-filled mixes increased on addition of Si-69. 2. In the presence of Si-69, the silica-EPDM system exhibits higher polymer-filler interaction than the clay-EPDM system. 3. Vulcanizates containing Si-69 exhibit higher apparent crosslink density and a higher proportion of polysulfidic crosslinks than the control vulcanizates. 4. Vulcanizates containing Si-69 show improved physical properties. Lower tensile and tear properties in vulcanizates with Si-69 at higher filler loadings is explained via a slippage mechanism. 5. SEM studies of fractured surfaces created under tension, tear, flexing, and abrasion have been made, and changes in the strength of the vulcanizates have been correlated with the fractographs.

Effect of silane coupling agent on filler and rubber interaction of silica reinforced solution styrene butadiene rubber

2013 ◽  
Vol 34 (10) ◽  
pp. 1575-1582 ◽  
Author(s):  
Liangliang Qu ◽  
Guozhu Yu ◽  
Ximing Xie ◽  
Lili Wang ◽  
Jing Li ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Silane Coupling ◽  
Styrene Butadiene

scholarly journals Effect of Sulfur Variation on the Vulcanizate Structure of Silica-Filled Styrene-Butadiene Rubber Compounds with a Sulfide–Silane Coupling Agent

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2815
Author(s):  
Sangwook Han ◽  
Bonyoung Gu ◽  
Sungwoo Kim ◽  
Seongrae Kim ◽  
Dalyong Mun ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Influencing Factor ◽  
Coupling Efficiency ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Compounds ◽  
Silane Coupling ◽  
Silica Dispersion ◽  
Styrene Butadiene

The vulcanizate structure of filled compounds is affected by filler–rubber interactions (FRI) and the chemical crosslink density (CCD) of the matrix rubber. In particular, in filled compounds using a silica–silane system, FRIs due to silica–rubber coupling are a major influencing factor for the vulcanizate structure and physical properties. In this study, the effect of sulfur variation on the vulcanizate structure of silica-filled solution styrene–butadiene rubber compounds using a sulfide–silane coupling agent was studied. The vulcanizate structure according to sulfur variation was quantitatively analyzed using the swelling test and Flory–Rehner and Kraus equations. As the sulfur content increased, both FRI and the CCD increased, and it was confirmed that sulfur variation influenced the silica–rubber coupling efficiency through increased FRI. In addition, field emission scanning electron microscope images showed that increased FRI contributed to improvements in silica dispersion, abrasion resistance, and energy loss characteristics.

The physico-mechanical properties of γ-irradiated ethylene propylene diene rubber/high styrene butadiene rubber nanocomposites

2020 ◽  
pp. 089270572093080
Author(s):  
MM Abdel-Aziz ◽  
Mona K Attia
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Γ Irradiation ◽  
Ethylene Propylene ◽  
Silane Coupling ◽  
The One ◽  
Styrene Butadiene

The mechanical properties of γ-irradiated ethylene propylene diene monomer (EPDM)/high styrene-butadiene rubber (HSBR) blends were investigated with special reference to the effects of blend ratio. Among the blends, the one with 80/20 EPDM/HSBR has been found to exhibit the highest tensile, hardness, thermal, and abrasion properties. The effect of γ-irradiation dose on the mechanical properties namely tensile strength and elongation at break was investigated. The effect of silane coupling agent on the mentioned properties of the EPDM/HSBR blend was studied. The results showed that the mechanical and the thermal properties of the γ-irradiated EPDM/HSBR blend improved with the addition of the silane coupling agent due to the increase in the cross-linking density. The inclusion of both the 30 phr fumed silica and N, N- m-phenylenedimaleimide coagent in the 80/20 EPDM/HSBR nanocomposite irradiated to 150 kGy leads to a synergistic effect. Thermogravimetric analysis was carried out to analyze the thermal stability of the nanocomposites. The mechanical properties have been interpreted in terms of the morphology of the blends as attested by scanning electron microscope.

scholarly journals Properties of SBR/NR Blend: The Effects of Carbon Black/Silica (CB/Si) Hybrid Filler and Silane Coupling Agent

2021 ◽  
Author(s):  
Anand G ◽  
S. Vishvanathperumal
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Hybrid Filler ◽  
Hybrid Fillers ◽  
Silane Coupling ◽  
Styrene Butadiene

Abstract In the current research, investigation of natural rubber (NR)/styrene butadiene rubber (SBR) reinforced with carbon black (CB)/silica (Si) and with and without silane coupling agent (Si69) was analyzed. The total hybrid filler (CB/Si) concentration in the composite was fixed at 50 phr. Cure characteristics, mechanical properties and surface morphology were examined. The addition of a silane coupling agent improves the mechanical properties of NR/SBR rubber composites reinforced with CB/Si hybrid fillers. Compared with NR/SBR composites with Si69, addition of 0/50 CB/Si resulted in 53% decrease of tensile strength and 81% increase of elongation at break, superior to that of NR/SBR composites without Si69. When Si69 was used as a binding agent, the scanning electron micrograph (SEM) of the tensile fractured surface clearly shows the better dispersion of hybrid fillers in the NR/SBR matrix.

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