scholarly journals Behavior of furnace black types in cis polybutadiene rubber (CBR) compounds and changes in the rheological properties of SBR-1502/CBR-1203 types of rubber compounds

2002 ◽  
Vol 21 (4) ◽  
pp. 367-371 ◽  
Author(s):  
F Kandemirli ◽  
E Demirhan ◽  
M Kandemirli
Keyword(s):  
Rheological Properties ◽  
Rubber Compounds ◽  
Furnace Black ◽  
Polybutadiene Rubber ◽  
In Cis

Determination of Combined and Second Order Factor Effects for Simultaneous Optimization of Physical and Mechanical Properties of NR/BR Blend System

2014 ◽  
Vol 42 (4) ◽  
pp. 290-304
Author(s):  
Rajarajan Aiyengar ◽  
Jyoti Divecha
Keyword(s):  
Physical And Mechanical Properties ◽  
Second Order ◽  
Simultaneous Optimization ◽  
Order Effects ◽  
Elongation At Break ◽  
Five Factors ◽  
Rubber Compounds ◽  
Polybutadiene Rubber ◽  
Contour Plots

ABSTRACT The blends of natural rubber (NR), polybutadiene rubber (BR), and other forms of rubbers are widely used for enhancing the mechanical and physical properties of rubber compounds. Lots of work has been done in conditioning and mixing of NR/BR blends to improve the properties of its rubber compounds and end products such as tire tread. This article employs response surface methodology designed experiments in five factors; high abrasion furnace carbon black (N 330), aromatic oil, NR/BR ratio, sulfur, and N-oxydiethylene-2-benzothiazole sulfenamide for determination of combined and second order effects of the significant factors leading to simultaneous optimization of the NR/BR blend system. One of the overall optimum of eight properties existed at carbon 44 phr, oil 6.1 phr, NR/BR 78/22 phr with the following values of properties: tensile strength (22 MPa), elongation at break (528%), tear resistance (30 kg/mm), rebound resilience (67%), moderate hardness (68 International rubber hardness degrees) with low heat buildup (17 °C), permanent set (12%), and abrasion loss (57 mm3). More optimum combinations can easily be determined from the NR/BR blend system models contour plots.

Rheological Properties of Rubber Compounds with Finely Divided Carbon Additives

2018 ◽  
Vol 91 (1) ◽  
pp. 146-151 ◽  
Author(s):  
Zh. S. Shashok ◽  
N. R. Prokopchuk ◽  
K. V. Vishnevskii ◽  
A. V. Krauklis ◽  
K. O. Borisevich ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Rubber Compounds ◽  
Carbon Additives

Investigation of the physical and rheological properties of SBR-1712 rubber compounds by neural network approaches

2007 ◽  
Vol 28 (5) ◽  
pp. 1737-1741 ◽  
Author(s):  
Enver Demirhan ◽  
Fatma Kandemirli ◽  
Mithat Kandemirli ◽  
Vasyl Kovalishyn
Keyword(s):  
Neural Network ◽  
Rheological Properties ◽  
Rubber Compounds ◽  
Network Approaches

scholarly journals RESEARCH OF TECHNOLOGICAL PROPERTIES OF RUBBER MIXTURES BASED ON SYNTHETIC RUBBERS FILLED WITH CARBON-CONTAINING MATERIAL

2020 ◽  
Vol 2 (3(72)) ◽  
Author(s):  
Sh.T. Dzhuraev ◽  
B.F. Muhiddinov ◽  
A.S. Ibodullaev
Keyword(s):  
Zinc Oxide ◽  
Rheological Properties ◽  
Physicochemical Characteristics ◽  
Technological Properties ◽  
Natural Surface ◽  
Rubber Compounds ◽  
Elastomeric Materials ◽  
Automobile Tires

The paper presents the results of studies of the physicochemical characteristics of the carbon-containing material obtained as a result of the pyrolysis of worn automobile tires. Ankerite (1.21%), zinc oxide (1.14%) and other components. Composite elastomeric materials based on rubbers SKI-3 and Nairit KR-50, filled with carboncontaining material, have been developed. Interconnections between structural radiations and the natural surface of a carbon-containing material and rubber macromolecules were found. The technological and rheological properties of the floor-elastomeric compositions with a carbon-containing effect were studied, and their optimal content in rubber compounds was shown.

The Effect of the Functionalisation of Low-Dispersion Carbon Black of the OMCARB Series by Hydrogen Peroxide on the Properties of Filled Composites

2017 ◽  
Vol 44 (11) ◽  
pp. 15-20
Author(s):  
G.V. Moiseevskaya ◽  
G.I. Razd'yakonova ◽  
A.A. Petin
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Black ◽  
Dynamic Properties ◽  
Strength Properties ◽  
Physicomechanical Characteristics ◽  
Rubber Compounds ◽  
Furnace Black ◽  
Mechanical Loss Tangent ◽  
Combination Of Methods ◽  
Low Dispersion

The aim of this work was to produce a new filler for polymers in which a low surface activity is combined with a high degree of structure and functionalisation of the surface, which will bring the processing properties of filled rubber mixes closer to the properties of rubber mixes with channel carbon black. The oxidation of specimens of low-dispersion, highly structured carbon black of grade OMCARB S820 was carried out using aqueous solutions of hydrogen peroxide of different concentration. Using a combination of methods, including X-ray diffraction analysis (D8 Advance diffractometer; Bruker, Germany) and transmission electron microscopy (JEM 2100 electron microscope; JEOL, Japan), we assessed the physicochemical properties and the form and the number of oxygen-containing groups (carboxyl, phenolic, lactone) on the surface of a particle of oxidised S820 in comparison with carbon black K354 (produced by the Khazar Chemical Plant, Turkmenistan) and semi-active furnace black N550 (produced by Omsktekhuglerod). The rheological characteristics (MDR 3000 vibrorheometer and MV 3000 viscometer; MonTech, Germany) and the physicomechanical characteristics (tensometer; Shimadzu, Japan) of rubber mixes filled with these blacks and of rubber compounds based on natural rubber were determined. The dynamic properties of the rubber compounds and the glass transition temperatures were determined on a DMA 242D instrument (Netzsch, Germany). Comparative data on the temperature dependence of the mechanical loss tangent (tg δ)of the rubber compounds showed that at temperatures of −60 and +60°C the greatest differences are possessed by rubber compounds with K354. At intermediate temperatures, the tg δ values for rubber compounds with the different fillers are similar. The new carbon black was advantageous with respect to the strength properties and dynamic characteristics of the rubber compounds, retaining the unique properties of composites filled with channel black.

Flow Properties and Melt Distortion in Molten Rubber Compounds under Capillary Extrusion

2013 ◽  
Vol 747 ◽  
pp. 627-630
Author(s):  
Watcharapong Chookaew ◽  
Yanichsa Sukniyom ◽  
Somjate Patcharaphun ◽  
Narongrit Sombatsompop
Keyword(s):  
Shear Rate ◽  
Rheological Properties ◽  
Apparent Viscosity ◽  
Wall Slip ◽  
Skin Layer ◽  
Rubber Compound ◽  
Melt Fracture ◽  
Extrudate Swell ◽  
Rubber Compounds ◽  
Capillary Extrusion

The influences of shear rate and vulcanizing system on the rheological properties and melt fracture of natural rubber compounds were investigated by using a rate-controlled capillary rheometer. The rheological properties of rubber compounds were characterized with respect to the apparent viscosity and extrudate swell. The measured results indicated that the apparent viscosity tended to decrease with increasing shear rate. This was due to the pseudoplastic behavior of molten rubber compound. It was evident that rubber compound using EV system showed the lowest apparent viscosity as compared to those obtained by CV and NS systems, respectively. This was due to the occurrences of premature crosslink at the skin layer and the wall slip of rubber compound during the flow in capillary die. Furthermore, the onset of smooth surface was also observed which depending on the types of crosslink at the skin layer.

Goodyear Medalist Lecture. Goodyear Medalist Lecture Towards Understanding of the Rheology of Rubber Compounds and their Processing

2009 ◽  
Vol 82 (2) ◽  
pp. 131-148 ◽  
Author(s):  
James L. White
Keyword(s):  
Rheological Properties ◽  
Processing Technology ◽  
Early Age ◽  
Technical Literature ◽  
Technical Problems ◽  
Rubber Industry ◽  
Professional Career ◽  
Synthetic Rubber ◽  
Rubber Compounds ◽  
The Usa

Abstract The problems of the rheological properties of rubber compounds and the understanding of the processing operations that are used to produce rubber products have received relatively little study in the literature compared to thermoplastics. This seems in part due to an almost 200 year old tradition of industrial secrecy and the vertically integrated nature of the synthetic rubber producer — tire manufacturer combines in the USA. Thus while abundant information has always been available from thermoplastics suppliers on processing technology, little has been available on rubber. Because I began my professional career in the rubber industry and became from an early age concerned with its technical problems, I have not been swayed to the same extent by the thermoplastics dominated technical literature as others in the polymer community.

Reinforcement of styrene-butadiene/polybutadiene rubber compounds by modified silicas with different surface and networked states

2017 ◽  
Vol 134 (22) ◽  
Author(s):  
Changseok Ryu ◽  
Jae-Kyoung Yang ◽  
Wonhyeong Park ◽  
Youngjun Seo ◽  
Sun Jung Kim ◽  
...  
Keyword(s):  
Rubber Compounds ◽  
Polybutadiene Rubber ◽  
Styrene Butadiene

EVALUATION OF RHEOLOGICAL PROPERTIES OF RUBBER COMPOUNDS BASED ON NR BY DETERMINATION OF NR LIPID CONTENTS OBTAINED FROM ATTENUATED TOTAL REFLECTION FOURIER TRANSFORM INFRARED SPECTRA

2020 ◽  
pp. 000-000
Author(s):  
Zohreh Asghari Barzegar ◽  
Saeed Taghvaei Ganjali ◽  
Mercedeh Malekzadeh ◽  
Fereshteh Motiee
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Rheological Properties ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Nondestructive Technique ◽  
Lipid Contents ◽  
Rubber Compounds ◽  
Cure Time

ABSTRACT This work was done in three stages. In step 1, the lipid content of different natural rubbers (NRs) was evaluated by two methods, extraction and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, and the obtained results were successfully correlated. In the second step, the correlations between scorch time (Ts2) and optimum cure time (T′c90) of rubber compounds based on natural rubber (NR) and the lipid contents of different types of NR (obtained by two methods) were investigated. The suitable linear behaviors were observed. In the third step, because ATR-FTIR spectroscopy is a fast, simple, and nondestructive technique for characterizing NR, the correlations that were obtained by this method were considered to predict the rheological properties of two case studies. The amounts of Ts2 and T′c90 were estimated by errors of about 20% and 15%, respectively. This new approach is a nondestructive and rapid method for predicting the cure characteristics of the defined NR-based rubber compounds by analyzing small amounts of the species.

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