Reinforcement of Acrylonitrile—Butadiene Rubber by Silica Generated in situ

1998 ◽  
Vol 71 (1) ◽  
pp. 38-52 ◽  
Author(s):  
H. Tanahashi ◽  
S. Osanai ◽  
M. Shigekuni ◽  
K. Murakami ◽  
Y. Ikeda ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hysteresis Loss ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
In Situ Silica ◽  
Reinforcement Efficiency ◽  
High Polarity

Abstract In situ silica reinforcement was applied to the acrylonitrile—butadiene rubber (NBR) vulcanizates. The amount of in situ silica introduced in the NBR vulcanizates was limited due to the high polarity of NBR. The presence of γ-mercaptopropyltrimethoxysilane (γ-MPS) in the NBR vulcanizate increased the conversion of TEOS in the sol-gel reaction and resulted in the higher amount of in situ silica, compared to the system without γ-MPS. The obtained silica was very fine and dispersed very homogeneously. In situ sol-gel reaction of TEOS in the NBR vulcanizates mixed with a conventional silica (VN-3) was also carried out. The reinforcement efficiency in this system increased with the increase of the amount of mechanically mixed conventional silica. Interestingly, the hysteresis loss decreased by the in situ filling of silica.

Silica and Silane Coupling Agent for in Situ Reinforcement of Acrylonitrile-Butadiene Rubber

1999 ◽  
Vol 72 (1) ◽  
pp. 119-129 ◽  
Author(s):  
K. Murakami ◽  
S. Osanai ◽  
M. Shigekuni ◽  
S. Iio ◽  
H. Tanahashi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Sol Gel ◽  
Silica Particles ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
In Situ Silica ◽  
Transmission Electron ◽  
Dispersion Agent ◽  
The Relationship

Abstract In situ silica reinforcement for the acrylonitrile-butadiene rubber (NBR) vulcanizates, which were premixed with a conventional silica (VN-3) and γ-mercaptopropyltrimethoxysilane (γ-MPS), was achieved by the sol-gel reaction of tetraethoxysilane (TEOS) using ethylenediamine. It was observed that the reinforcement efficiency tended to increase with the increase of mechanically premixed conventional silica. From the observations of transmission electron microscopy and scanning electron microscopy, the simultaneous use of VN-3 and γ-MPS was found to promote the formation of large silica particles and clusters with a relatively good dispersion by the sol-gel reaction of TEOS in the NBR vulcanizate. The results of hysteresis measurements supported this promotion. It was considered to be due to the surface modification of VN-3 by the sol-gel reaction of TEOS and the presence of γ-MPS which worked as a dispersion agent for silica particles. The relationship between the mechanical properties and the morphology of the in situ silica filled vulcanizates is discussed.

scholarly journals Effects of octamethylcyclotetrasiloxane grafting and in situ silica particle generation on the curing and mechanical properties of a styrene butadiene rubber composite

RSC Advances ◽  
2019 ◽  
Vol 9 (59) ◽  
pp. 34330-34341 ◽  
Author(s):  
Changjie Yin ◽  
Qiuyu Zhang
Keyword(s):  
Mechanical Properties ◽  
Silica Particle ◽  
Sol Gel ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Particle Generation ◽  
In Situ Silica ◽  
Rubber Composite ◽  
Styrene Butadiene

The reinforcement of octamethylcyclotetrasiloxane (D4) grafted styrene butadiene rubber (SBR-g-D4) with in situ generated silica was performed using the sol–gel reaction of tetraethoxysilane (TEOS) in latex.

scholarly journals Study on the Reaction Condition for In Situ Silica Reinforcement of Butadiene Rubber by Sol-Gel Method.

1996 ◽  
Vol 69 (6) ◽  
pp. 442-446 ◽  
Author(s):  
Shinzo KOHJIYA ◽  
Akira TANAKA ◽  
Yoshihiko WADA ◽  
Yuko IKEDA
Keyword(s):  
Sol Gel ◽  
Butadiene Rubber ◽  
Gel Method ◽  
Sol Gel Method ◽  
In Situ Silica ◽  
Reaction Condition

In Situ Silica Reinforcement of Styrene-Butadiene Rubber by Sol-Gel Method, 1.

1994 ◽  
Vol 67 (12) ◽  
pp. 859-861 ◽  
Author(s):  
Shinzo KOHJIYA ◽  
Aiko YAJIMA ◽  
Jae Ryong YOON ◽  
Yuko IKEDA
Keyword(s):  
Sol Gel ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Gel Method ◽  
Sol Gel Method ◽  
In Situ Silica ◽  
Styrene Butadiene

Reinforcing efficiency and compatibilizing effect of sol–gel derived in situ silica for natural rubber/chloroprene rubber blends

RSC Advances ◽  
2014 ◽  
Vol 4 (102) ◽  
pp. 58816-58825 ◽  
Author(s):  
Bharat P. Kapgate ◽  
Chayan Das
Keyword(s):  
Natural Rubber ◽  
Sol Gel ◽  
Rubber Blends ◽  
In Situ Silica ◽  
Chloroprene Rubber ◽  
Compatibilizing Effect

The strong CR/in situ silica interaction causes filler accumulation at the interphase and enhances the compatibility and reinforcement in the NR/CR blend.

scholarly journals Synthesis of Modified Styrene-Butadiene Rubber Latex Containing Triethoxysilyl Group and Its in situ Silica Filling

2003 ◽  
Vol 76 (7) ◽  
pp. 234-239 ◽  
Author(s):  
Kiyoshi SUNADA ◽  
Hiroki TAKESHITA ◽  
Masamitsu MIYA ◽  
Tsukasa NAKAMURA ◽  
Katsuhiko TAKENAKA ◽  
...  
Keyword(s):  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Latex ◽  
In Situ Silica ◽  
Styrene Butadiene

FUNCTIONALIZATION OF EPDM RUBBER TOWARD BETTER SILICA DISPERSION AND REINFORCEMENT

2018 ◽  
Vol 92 (2) ◽  
pp. 219-236 ◽  
Author(s):  
Naresh D. Bansod ◽  
Bharat P. Kapgate ◽  
Pradip K. Maji ◽  
Anasuya Bandyopadhyay ◽  
Chayan Das
Keyword(s):  
Maleic Anhydride ◽  
Sol Gel ◽  
Silica Content ◽  
Rubber Matrix ◽  
Epdm Rubber ◽  
In Situ Silica ◽  
Grafted Epdm ◽  
Composite Properties ◽  
Rubber Filler

ABSTRACT Functionalization of non-polar ethylene propylene diene monomer (EPDM) rubber by melt grafting of maleic anhydride (MA) and in situ incorporation of sol–gel derived silica in the MA grafted EPDM has been done to prepare EPDM/silica composites to use dual benefits of both the approaches, which results in adequate rubber–filler compatibility, good filler dispersion, and enhanced composite properties. Controlled growth of silica up to 25 parts per hundred rubber (phr) is carried out with the solution sol–gel process using tetraethoxysilane (TEOS) as a silica precursor. Mechanical and dynamical properties of the composites are found to improve consistently as silica content increases. Furthermore, treatment of maleic anhydride grafted EPDM by γ-aminopropyltrimethoxysilane (γ-APS) results in remarkable improvement in composite properties even at the same silica content. This is attributed to the generation of uniformly dispersed spherically shaped nanosilica throughout the rubber matrix as observed in a transmission electron microscopic (TEM) study. This contributes to enhanced crosslinking density and improved rubber–filler interaction. In fact, the reinforcement effect brought by in situ silica relative to unmodified in situ silica/EPDM composites is found to be much higher than that reported in recent work on EPDM/in situ silica composites even with higher silica loading. The mechanical, rheological, and dynamic mechanical behaviors of all the composites are evaluated and compared in detail.

Sign in / Sign up

Export Citation Format

Share Document