Rheological behavior of ethylene-octene copolymer vulcanizates: Effect of blowing agent and precipitated silica filler

2003 ◽  
Vol 89 (4) ◽  
pp. 1132-1138 ◽  
Author(s):  
N. C. Nayak ◽  
D. K. Tripathy
Keyword(s):  
Rheological Behavior ◽  
Blowing Agent ◽  
Precipitated Silica ◽  
Silica Filler ◽  
Ethylene Octene Copolymer

Interaction between Carboxylated Nitrile Rubber and Precipitated Silica: Role of (3-Aminopropyl)Triethoxysilane

1996 ◽  
Vol 69 (4) ◽  
pp. 637-647 ◽  
Author(s):  
Sumanda Bandyopadhyay ◽  
P. P. De ◽  
D. K. Tripathy ◽  
S. K. De
Keyword(s):  
Physical Properties ◽  
Coupling Agent ◽  
Spectroscopic Studies ◽  
Nitrile Rubber ◽  
Dynamic Mechanical ◽  
Precipitated Silica ◽  
Silica Filler ◽  
Bound Rubber ◽  
Rubber Filler

Abstract On the basis of measurements of bound rubber and physical properties and the results of Monsanto rheometer, dynamic mechanical and infrared spectroscopic studies, it is observed that strong rubber-filler interaction occurs between XNBR and precipitated silica filler. During molding, XNBR was found to be crosslinked by the filler surface through the formation of primary bonds. The coupling agent, namely (3-aminopropyl)triethoxysilane facilitates the formation of rubber-filler bonds at the expense of filler-filler networks, leading to improved dispersion and enhanced degree of crosslinking.

Failure Properties of Silica-Filled Ethylene Vinyl Acetate Microcellular Rubber

1993 ◽  
Vol 66 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Kinkar Mukhopadhyaa ◽  
D. K. Tripathy ◽  
S. K. De
Keyword(s):  
Physical Properties ◽  
Vinyl Acetate ◽  
Reasonable Agreement ◽  
Pore Diameter ◽  
Ethylene Vinyl Acetate ◽  
Foam Rubber ◽  
Blowing Agent ◽  
Silica Filler ◽  
Failure Properties

Abstract The concentrations of the blowing agent and silica filler alter the microstructure of ethylene vinyl acetate rubber foam which in turn is responsible for changes in the physical properties of the foam vulcanizates. The theoretically predicted flaw sizes were found to be in reasonable agreement with the largest pore diameter observed from SEM photomicrographs. The results support the theory that the tensile rupture of foam rubber occurs by the catastrophic tearing from a flaw present in the form of the largest pore in the microstructure of the foam.

Rheological behavior of CPE/NR blends filled with precipitated silica

2006 ◽  
Vol 100 (4) ◽  
pp. 2565-2571 ◽  
Author(s):  
Nilobon Phewthongin ◽  
Pongdhorn Saeoui ◽  
Chakrit Sirisinha
Keyword(s):  
Rheological Behavior ◽  
Precipitated Silica
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