The influences of silane coupling agents on rheological properties of bentonite/nitrile butadiene rubber nanocomposites during curing process

2018 ◽  
Vol 25 (3) ◽  
pp. 236-242 ◽  
Author(s):  
Xin Ge ◽  
Zhijian Zhang ◽  
Huitao Yu ◽  
Bangwen Zhang
Keyword(s):  
Rheological Properties ◽  
Coupling Agents ◽  
Butadiene Rubber ◽  
Curing Process ◽  
Silane Coupling Agents ◽  
Nitrile Butadiene Rubber ◽  
Silane Coupling ◽  
Rubber Nanocomposites

Effect of silane coupling agent on the mechanical properties of nitrile butadiene rubber (NBR)/organophilic montmorillonite (OMMT) nanocomposites

2016 ◽  
Vol 23 (3) ◽  
pp. 277-282 ◽  
Author(s):  
Ru Liang Zhang ◽  
Li Fen Zhao ◽  
Yu Dong Huang ◽  
Li Liu
Keyword(s):  
Mechanical Properties ◽  
Mechanical Analysis ◽  
Coupling Agents ◽  
Butadiene Rubber ◽  
Silane Coupling Agents ◽  
Nitrile Butadiene Rubber ◽  
Melt Compounding ◽  
Silane Coupling ◽  
Organophilic Montmorillonite ◽  
Ommt Clay

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.

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

2018 ◽  
Vol 91 (2) ◽  
pp. 453-468 ◽  
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.

Fine-Particle Silicas in Tire Treads, Carcass, and Steel-Belt Skim

1977 ◽  
Vol 50 (2) ◽  
pp. 356-363 ◽  
Author(s):  
M. P. Wagner
Keyword(s):  
Fine Particle ◽  
Coupling Agents ◽  
Butadiene Rubber ◽  
Limited Extent ◽  
Silane Coupling Agents ◽  
Absolute Certainty ◽  
Satisfactory Performance ◽  
Wide Range ◽  
Silane Coupling ◽  
Tire Testing

Abstract HS-200 silicas, modified with the coupling agents, performed in tire treads equivalent to N-200 type carbon blacks. Tread wear and traction in contemporary tire tread compounds could be obtained with HS-200 silica equivalent to those with carbon black. In passenger-car treads containing higher than normal butadiene rubber, HS-200 silica could be compounded for excellent mileage and improved wet road traction. These results are encouraging, but considerably more tire testing would be required for absolute certainty that silicas could, in fact, replace contemporary tread fillers. The data indicate that silicas together with silane coupling agents provide extreme flexibility in the design of tread properties. Although tested only to a limited extent in tires, silicas can be used in sidewall, carcass, and radial-belt compounds of tires, as well. The various filler sizes available, and the flexibility of adjusting surface activity, permits a wide range of rubber properties to be obtained. In a limited number of cases, these properties are virtually identical to those obtained with contemporary carcass and sidewall fillers. Tire performance in carcass and belt-skim compounds showed that silicas could provide tire performance equivalent to conventional fillers in these applications. Based on our observations, we confidently believe the technology exists to meet the performance of today's tire components entirely with inorganic fillers. Obviously, to put these components together in a practical tire requires some development work. Satisfactory performance in individual components is encouraging, but the incorporation of all components into a single harmonious product is still necessary. Fine-particle silicas are truly oil-independent fillers that can be used for tires as well as other quality rubber products.

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