Effects of silane coupling agents on tribological properties of bentonite/nitrile butadiene rubber composites

AbstractThe effect of coupling agents on the mechanical properties of nitrile butadiene rubber (NBR)/organophilic montmorillonite (OMMT) clay nanocomposites was studied using three different types of silane coupling agents, which were γ-(aminopropyl)triethoxysilane, γ-(mercaptopropyl) triethoxy silane, and bis-[(γ-triethoxy silane)proply] tetrasulfur. The NBR/OMMT nanocomposites were prepared via the melt compounding with OMMT clay. The effect of silane coupling agents on the dispersion of OMMT in the polymer matrix was studied by X-ray diffraction. Dynamic mechanical analysis was employed to investigate the mechanical properties change induced by the silane coupling agents. The results suggest improved mechanical properties for the nanocomposites with coupling agents of γ-(mercaptopropyl) triethoxy silane and bis-[(γ-triethoxy silane)proply] tetrasulfur, whereas reduced mechanical properties were observed for nanocomposites with γ-(aminopropyl)triethoxysilane.

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Effects of silane coupling agents on the properties of bentonite/nitrile butadiene rubber nanocomposites synthesized by a novel green method

Applied Clay Science ◽

10.1016/j.clay.2015.10.003 ◽

2015 ◽

Vol 118 ◽

pp. 265-275 ◽

Cited By ~ 26

Author(s):

Xin Ge ◽

Mei-Chun Li ◽

Xiang Xu Li ◽

Ur Ryong Cho

Keyword(s):

Coupling Agents ◽

Butadiene Rubber ◽

Silane Coupling Agents ◽

Green Method ◽

Nitrile Butadiene Rubber ◽

Silane Coupling ◽

Rubber Nanocomposites

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Mechanical properties of silica particle-filled styrene-butadiene rubber composites containing polysulfide-type silane coupling agents: Influence of loading method of silane

Journal of Applied Polymer Science ◽

10.1002/app.39175 ◽

2013 ◽

Vol 130 (1) ◽

pp. 322-329 ◽

Cited By ~ 18

Author(s):

Tomoyoshi Fukuda ◽

Syuji Fujii ◽

Yoshinobu Nakamura ◽

Mariko Sasaki

Keyword(s):

Mechanical Properties ◽

Silica Particle ◽

Styrene Butadiene Rubber ◽

Coupling Agents ◽

Butadiene Rubber ◽

Silane Coupling Agents ◽

Rubber Composites ◽

Loading Method ◽

Silane Coupling ◽

Styrene Butadiene

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The Investigation of the Silica-Reinforced Rubber Polymers with the Methoxy Type Silane Coupling Agents

Polymers ◽

10.3390/polym12123058 ◽

2020 ◽

Vol 12 (12) ◽

pp. 3058

Author(s):

Sang Yoon Lee ◽

Jung Soo Kim ◽

Seung Ho Lim ◽

Seong Hyun Jang ◽

Dong Hyun Kim ◽

...

Keyword(s):

Mechanical Properties ◽

Coupling Agent ◽

Silane Coupling Agent ◽

Testing Machine ◽

Styrene Butadiene Rubber ◽

Coupling Agents ◽

Butadiene Rubber ◽

Silane Coupling Agents ◽

Rubber Composites ◽

Silane Coupling

The methoxy-type silane coupling agents were synthesized via the modification of the hydrolyzable group and characterized to investigate the change in properties of silica/rubber composites based on the different silane coupling agent structures and the masterbatch fabrication methods. The prepared methoxy-type silane coupling agents exhibited higher reactivity towards hydrolysis compared to the conventional ethoxy-type one which led to the superior silanization to the silica filler surface modified for the reinforcement of styrene-butadiene rubber. The silica/rubber composites based on these methoxy-type silane coupling agents had the characteristics of more developed vulcanization and mechanical properties when fabricated as masterbatch products for tread materials of automobile tire surfaces. In particular, the dimethoxy-type silane coupling agent showed more enhanced rubber composite properties than the trimethoxy-type one, and the environmentally friendly wet masterbatch fabrication process was successfully optimized. The reactivity of the synthesized silane coupling agents toward hydrolysis was investigated by FITR spectroscopic analysis, and the mechanical properties of the prepared silica-reinforced rubber polymers were characterized using a moving die rheometer and a universal testing machine.

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EFFECTS OF SILANE COUPLING AGENTS ON STRUCTURE AND PROPERTIES OF SILICA-FILLED SILICONE RUBBER/STYRENE BUTADIENE RUBBER COMPOSITES

Rubber Chemistry and Technology ◽

10.5254/rct.18.81657 ◽

2018 ◽

Vol 91 (2) ◽

pp. 453-468 ◽

Cited By ~ 1

Author(s):

Hong-Yuan Ren ◽

Zheng Sun ◽

Li-Qun Zhang ◽

You-Ping Wu ◽

Qiang Huang ◽

...

Keyword(s):

Styrene Butadiene Rubber ◽

Coupling Agents ◽

Butadiene Rubber ◽

Structure And Properties ◽

Silane Coupling Agents ◽

Rubber Content ◽

Bound Rubber ◽

Silane Coupling ◽

Styrene Butadiene ◽

Rubber Filler

ABSTRACT Two silane coupling agents, bis-(γ-triethoxysilylpropyl)-tetrasulfide (Si69) and vinyltriethoxysilane (A151), were selected to investigate their effects on structure and properties of silica-filled methyl vinyl silicone rubber (VMQ)/emulsion styrene butadiene rubber (ESBR) composites. The filler–rubber interactions were investigated via bound rubber content and solid-state 1H low-field nuclear magnetic resonance (NMR) spectroscopy, and the mass ratio of VMQ and ESBR in the rubber–filler gel was investigated by thermogravimetric analysis (TGA). The results revealed that VMQ showed a better compatibility with silica than ESBR. Compared with the A151 composite, the composite with Si69 showed the higher content of ESBR in rubber–filler gel, which resulted in the higher bound rubber content and the weaker Payne effect, and it also exhibited higher tensile strength, higher tear strength, better wear resistance, and lower hardness. However, the presence of Si69 reduced the crosslink efficiency of ESBR and completely inhibited the crosslinking of VMQ, which caused the composite to show higher tan δ value at 60 °C than the A151 composite.

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