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

Polymers ◽  
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.

Processibility and Mechanical Properties of Mullite-Filled Styrene Butadiene Rubber Composites

2011 ◽  
Vol 284-286 ◽  
pp. 401-410
Author(s):  
Qiong Qiong Liu
Keyword(s):  
Mechanical Properties ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Precipitated Silica ◽  
Roll Mill ◽  
Silane Coupling ◽  
Styrene Butadiene ◽  
Reinforcing Filler

Mullite (3A12O3·2SiO2) is an aluminosilicate ceramic of great technological importance. We investigated its potential as fillers in rubber. Mullites untreated or treated with 3% γ-mecapto-propyltrimethoxysilane (A-189) were added into styrene-butadiene rubber (SBR) materials on a laboratory-sized two-roll mill. For comparison, commercial precipitated silica was also used. The effect of these fillers on the cure characteristics, processibility and mechanical properties of SBR at various loadings, ranging from 0 to 50 phr was investigated. The results showed that mullite was a semi-reinforcing filler for SBR materials and exhibits better overall cure properties, lower Mooney viscosity, lower tensile set, better resilience as compared to precipitated silica, while it is inferior to precipitated silica especially with regard to tensile strength, tear strength and abrasion resistance. The presence of the silane coupling agent can enhance mechanical properties of filled SBR vulcanizates to some extent.

Effect of silane coupling agent on the structure and mechanical properties of nano-dispersed clay filled styrene butadiene rubber

2014 ◽  
Vol 37 (3) ◽  
pp. 890-896 ◽  
Author(s):  
Shaojian He ◽  
Yang Xue ◽  
Jun Lin ◽  
Liqun Zhang ◽  
Xiaoze Du ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Silane Coupling ◽  
Styrene Butadiene

Effect of Silane Coupling Agent on the Mechanical Properties of Clay Filled Styrene Butadiene Rubber

2005 ◽  
Vol 44 (6) ◽  
pp. 1159-1171 ◽  
Author(s):  
Nabil A. N. Alkadasi ◽  
D. G. Hundiwale ◽  
U. R. Kapadi ◽  
S. Mishra
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Silane Coupling ◽  
Styrene Butadiene

scholarly journals Effect of Silane Coupling Agent on Modification of Areca Fiber/Natural Latex

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4896
Author(s):  
Yiren Pan ◽  
Meng Zhang ◽  
Jian Zhang ◽  
Xiaoyao Zhu ◽  
Huiguang Bian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Swelling Properties ◽  
Silane Coupling ◽  
Physical And Chemical

In this paper, the areca fiber was extracted by physical and chemical treatment, and then the areca fiber/natural latex composite was prepared by natural latex impregnation technology. In order to combine areca fiber and natural rubber latex better, three silane coupling agents with different action mechanism were selected: Si−69, KH550, and KH570 which were used to treat the areca fiber/natural latex compound. The results show that the silane coupling agent can change the surface of the fiber from hydrophilic surface to organophilic surface, making the bonding of areca fiber to natural latex more closely. At the same time, the mechanical properties, physical and mechanical properties, swelling properties, and dynamic viscoelastic properties of the tightly bonded areca fiber/nature latex composites were improved. After observing the micro-structure through a scanning electron microscope, it was found that the three silane coupling agents could effectively bind areca fiber and natural latex to enhance the performance of the composite material, of which Si−69 performed best, and the tensile strength and tear strength of the composite increased by 21.19% and 12.90% respectively.

The physico-mechanical properties of γ-irradiated ethylene propylene diene rubber/high styrene butadiene rubber nanocomposites

2020 ◽  
pp. 089270572093080
Author(s):  
MM Abdel-Aziz ◽  
Mona K Attia
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Γ Irradiation ◽  
Ethylene Propylene ◽  
Silane Coupling ◽  
The One ◽  
Styrene Butadiene

The mechanical properties of γ-irradiated ethylene propylene diene monomer (EPDM)/high styrene-butadiene rubber (HSBR) blends were investigated with special reference to the effects of blend ratio. Among the blends, the one with 80/20 EPDM/HSBR has been found to exhibit the highest tensile, hardness, thermal, and abrasion properties. The effect of γ-irradiation dose on the mechanical properties namely tensile strength and elongation at break was investigated. The effect of silane coupling agent on the mentioned properties of the EPDM/HSBR blend was studied. The results showed that the mechanical and the thermal properties of the γ-irradiated EPDM/HSBR blend improved with the addition of the silane coupling agent due to the increase in the cross-linking density. The inclusion of both the 30 phr fumed silica and N, N- m-phenylenedimaleimide coagent in the 80/20 EPDM/HSBR nanocomposite irradiated to 150 kGy leads to a synergistic effect. Thermogravimetric analysis was carried out to analyze the thermal stability of the nanocomposites. The mechanical properties have been interpreted in terms of the morphology of the blends as attested by scanning electron microscope.

scholarly journals Properties of SBR/NR Blend: The Effects of Carbon Black/Silica (CB/Si) Hybrid Filler and Silane Coupling Agent

2021 ◽  
Author(s):  
Anand G ◽  
S. Vishvanathperumal
Keyword(s):  
Mechanical Properties ◽  
Carbon Black ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Hybrid Filler ◽  
Hybrid Fillers ◽  
Silane Coupling ◽  
Styrene Butadiene

Abstract In the current research, investigation of natural rubber (NR)/styrene butadiene rubber (SBR) reinforced with carbon black (CB)/silica (Si) and with and without silane coupling agent (Si69) was analyzed. The total hybrid filler (CB/Si) concentration in the composite was fixed at 50 phr. Cure characteristics, mechanical properties and surface morphology were examined. The addition of a silane coupling agent improves the mechanical properties of NR/SBR rubber composites reinforced with CB/Si hybrid fillers. Compared with NR/SBR composites with Si69, addition of 0/50 CB/Si resulted in 53% decrease of tensile strength and 81% increase of elongation at break, superior to that of NR/SBR composites without Si69. When Si69 was used as a binding agent, the scanning electron micrograph (SEM) of the tensile fractured surface clearly shows the better dispersion of hybrid fillers in the NR/SBR matrix.

Reinforcement of General-Purpose Grade Rubbers by Silica Generated In Situ

2000 ◽  
Vol 73 (3) ◽  
pp. 534-550 ◽  
Author(s):  
Shinzo Kohjiya ◽  
Yuko Ikeda
Keyword(s):  
Mechanical Properties ◽  
Sol Gel ◽  
General Purpose ◽  
Diameter Distribution ◽  
Styrene Butadiene Rubber ◽  
Coupling Agents ◽  
Butadiene Rubber ◽  
Silane Coupling Agents ◽  
Silane Coupling

Abstract The use of the sol—gel process on general-purpose grade rubbers is reviewed in the absence or presence of silane coupling agents. The sol—gel reactions of tetraethoxysilane (TEOS) in epoxidized natural rubber (ENR), styrene—butadiene rubber (SBR) or butadiene rubber (BR) vulcanizates produced silica generated in situ. This silica was found to be a good reinforcing agent by investigating tensile and dynamic mechanical properties and morphology observation by transmission electron microscopy (TEM). The amount of silica formed was limited by the degree of swelling of the rubber vulcanizate by TEOS which was the precursor of the silica. However, the dispersion of silica generated in situ was better than conventionally added silica due to its formation in place. Also, it was noted that the diameter distribution of in situ silica was monodispersed. Silane coupling agents, such as mercaptosilane, aminosilane, and bis(3-triethoxysilylpropyl) tetrasulfide, were compounded in the vulcanizates and their effects on silica generated in situ were evaluated. Their effects were significant. The dispersion of the silica in the rubbery matrix became better and the particle size became smaller and monodispersed, as observed by TEM, which improved mechanical properties. The superior properties of silica generated in situ have been studied further to elucidate the mechanism of reinforcement.

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.

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