Effect of Surface Oxidation of Carbon Black on Its Bonding with Epoxidized Natural Rubber in the Presence of Silane Coupling Agent

1999 ◽  
Vol 72 (2) ◽  
pp. 398-409 ◽  
Author(s):  
Ajay K. Manna ◽  
P. P. De ◽  
D. K. Tripathy ◽  
S. K. De ◽  
M. K. Chatterjee
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Surface Oxidation ◽  
Spectroscopic Studies ◽  
Epoxidized Natural Rubber ◽  
Silyl Ether ◽  
Silane Coupling ◽  
Swelling Studies

Abstract Results of bound rubber determination, Monsanto rheometry, solvent swelling studies and measurement of physical properties reveal that high temperature molding of epoxidized natural rubber (ENR) filled with intermediate super abrasion furnace (ISAF) carbon black and surface oxidized ISAF carbon black, in the presence of silane coupling agent, namely, N-(4-vinylbenzyl)-N′-[3-(trimethoxysilyl)propyl]ethane-1,2-diamine monoHCl salt, results in crosslinking of the rubber phase, even in the absence of the vulcanizing agents. Infrared spectroscopic studies show formation of silyl ether, in the case of ISAF carbon black, whereas the oxidized grade forms both silyl ether as well as silyl ester and amide linkage. Oxidation of ISAF carbon black causes an increase in the extent of coupling bond formation.

Bonding between epoxidized natural rubber and clay in presence of silane coupling agent

1999 ◽  
Vol 72 (14) ◽  
pp. 1895-1903 ◽  
Author(s):  
A. K. Manna ◽  
D. K. Tripathy ◽  
P. P. De ◽  
S. K. De ◽  
M. K. Chatterjee ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Epoxidized Natural Rubber ◽  
Silane Coupling

Optimization of Epoxidation Degree and Silane Coupling Agent Content for Silica-Filled Epoxidized Natural Rubber Tire Tread Compounds

2013 ◽  
Vol 844 ◽  
pp. 243-246 ◽  
Author(s):  
Wisut Kaewsakul ◽  
Kannika Sahakaro ◽  
Wilma Dierkes ◽  
Jacques W.M. Noordermeer
Keyword(s):  
Natural Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Silica Content ◽  
Epoxidized Natural Rubber ◽  
Rubber Tire ◽  
Rubber Compounds ◽  
Silane Coupling ◽  
Reinforcement Efficiency

Parallel studies on the influence of epoxide contents in epoxidized natural rubbers (ENRs) in the absence of bis-(triethoxysilylpropyl) tetrasulfide (TESPT) coupling agent, as well as a combination of ENRs with different loadings of TESPT on the properties of ENR compounds, are carried out in this work. The results suggests that the best possible combination to optimize processibility and to improve reinforcement efficiency is to utilize ENR with an epoxide content in the range of 20 30 mol%, together with 2 4 wt% relative to the silica content of TESPT. This leads to a reduction of TESPT when compared to the conventional natural rubber compounds.

REDUCED ETHANOL EMISSIONS BY A COMBINATION OF EPOXIDIZED NATURAL RUBBER AND SILANE COUPLING AGENT FOR SILICA-REINFORCED NATURAL RUBBER-BASED TIRE TREADS

2016 ◽  
Vol 89 (3) ◽  
pp. 419-435 ◽  
Author(s):  
K. Sengloyluan ◽  
K. Sahakaro ◽  
W. K. Dierkes ◽  
J. W. M. Noordermeer
Keyword(s):  
Organic Compound ◽  
Natural Rubber ◽  
Volatile Organic Compound ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Elemental Sulfur ◽  
Silica Surface ◽  
Epoxidized Natural Rubber ◽  
Volatile Organic ◽  
Silane Coupling

ABSTRACT In an attempt to reduce the high volatile organic compound (ethanol) emissions from silica-reinforced NR compounds, this work aimed to, at least partially, replace the use of large quantities of silane coupling agent bis-(3-triethoxysilylpropyl) tetrasulfide (TESPT). The use of 7.5 phr of epoxidized natural rubber (ENR-51) as compatibilizer between NR and silica enhances the properties, which can be further improved by half or even lower amounts than required with TESPT alone. The properties obtained with TESPT are nearly matched, except for steric limitations imposed upon the ENR molecules to cap the silanol groups on the silica surface to the same extent as TESPT can do. Furthermore, TESPT donates reactive elemental sulfur to the compound during vulcanization, which needs to be compensated for in use with ENR.

Mechanical and Thermal Properties of Natural Rubber Latex Modified by Purple Carbon Black

2013 ◽  
Vol 821-822 ◽  
pp. 961-964 ◽  
Author(s):  
Dan Fan ◽  
Xiao Xue Liao ◽  
Shuang Quan Liao ◽  
Yan Fang Zhao ◽  
Jie Sun
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Natural Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Natural Rubber Latex ◽  
Latex Film ◽  
Mechanical And Thermal Properties ◽  
Rubber Latex ◽  
Silane Coupling

Stable aqueous solution of purple carbon black (PCB) was prepared first and then added to prevulcanized natural rubber latex. The effects of the amount of PCB, silane coupling agent and the type of silane coupling agent on the mechanical properties of the vulcanized latex film were researched. The results show that the best mechanical properties were obtained when the vulcanized film was filled with 6 phr PCB modified by KH560. TG shows that thermal stability of the film with PCB modified by KH560 increased. DSC shows that the glass transition temperature of the film increased after adding PCB.

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