Fiber Structure and Mechanical Properties of Electrospun Butyl Rubber with Different Types of Carbon Black

2007 ◽  
Vol 80 (2) ◽  
pp. 231-250 ◽  
Author(s):  
P. Threepopnatkul ◽  
D. Murphy ◽  
J. Mead ◽  
W. Zukas

Abstract Breathable butyl rubber non-woven mats have been successfully produced by the electrospinning technique, providing a fibrous membrane with controlled porosity and surface area. These properties are directly related to the barrier properties of the product, including water vapor transmission, air flow resistance, aerosol resistance, and the transportation of chemical vapors. Butyl rubber is also known as a highly chemical resistant elastomer material, which can be used for applications requiring high elongation. The use of carbon black filled elastomers provides the ability to tailor the properties, such as processability, mechanical properties, and barrier properties through proper selection of carbon black type and loading. In this work, the structure and mechanical properties of electrospun butyl rubber non-woven mats were investigated using a series of carbon black types with variation in particle size and structure. Fiber diameter decreased with decreasing particle size and increasing carbon black structure. Mechanical properties can be explained by variation in density and fiber morphology of membranes. Decreasing carbon black particle size and increasing structure decreased the density, and increased tensile strength, ultimate elongation and modulus.

2012 ◽  
Vol 626 ◽  
pp. 114-120 ◽  
Author(s):  
Mahendra Anggaravidya ◽  
Sudirman Sudirman ◽  
Bambang Soegijono ◽  
Emil Budianto ◽  
Martin Djamin

The mechanical properties of natural rubber can be enhanced by the addition of carbon black. The mechanical properties change is highly affected by particle size and carbon black structure used. A modification of N660 carbon black was conducted in the research by sonoficating the carbon black for 3 and 5 hours (N600-M3; M5). The results of adding modified carbon black were characterised by Particle Size Analysis (PSA), Scanning Electron Microscopes - Energy Dispersive Spectrometry (SEM-EDS) and Thermogravimetric Analysis (TGA). The addition of modified carbon black shows bound rubber, thermal properties, and mechanical properties such as tensile strength, elongation at break and modulus 300% on the vulcanisate produced were increased from the vulcanisate that had been filled with N660 natural (N660-N). Keywords: natural rubber, carbon black, particle size, sonofication, characterisation


2003 ◽  
Vol 90 (6) ◽  
pp. 1539-1544 ◽  
Author(s):  
F. Abd-El Salam ◽  
M. H. Abd-El Salam ◽  
M. T. Mostafa ◽  
M. R. Nagy ◽  
M. I. Mohamed

2012 ◽  
Vol 501 ◽  
pp. 274-278
Author(s):  
Guang Yi Lin ◽  
Ben Fa Gao ◽  
Chuan Sheng Wang

In order to improve the dispersion degree of carbon black and other additives, reduce consumption of energy and the temperature of discharging rubber compound, our research has been focused on preparation of rubber compound with different rubber particle size at filling coefficient of 0.6 and 0.7 in the mixer. The power consumption, the temperature of discharging rubber compound and the dispersion of carbon black were characterized in this study. The mechanical properties of the rubber compound have also been tested. The results indicate that reducing the particle size of rubber can reduce the consumption of energy and the temperature of discharging rubber compound and improve the mechanical properties, which is very important in rubber industry


2021 ◽  
Author(s):  
Dalal Alshangiti

Abstract A series of natural rubber/ butyl rubber NR/IIR blend loaded with N660 carbon black CB and triethoxy vinyl silane treated clay nano particles (TCNP) were prepared using gamma irradiation in the presence of polyfunctional monomer, trimethylolpropane triacrylate (TMPTA). The effect of incorporating different content of N660 carbon black and 5 part per hundred of rubber (phr) of treated clay on the mechanical properties of the prepared nano composites have been investigated. The additions of TCNP into CB/ rubber composites markedly increase their tensile strength due to the increase of the cross-link density. These results indicated that the TCNP may be enclosed or trapped in the occluded structure of CB. The effect of CB and TCNP content on the tensile strength (σ), elongation at break (εb %) and modulus of elasticity (E, MPa) of natural rubber/ butyl rubber NR/IIR blend have been investigated. The incorporation of 5 phr of TCNP into 30 phr carbon black loaded NR/ IIR composites results in the increased tensile strength value by about 60%. Finally, theoretical models were used to interpret the experimental results.


2014 ◽  
Vol 971-973 ◽  
pp. 178-182
Author(s):  
Nai Xiu Ding ◽  
Yi Jia ◽  
Pei Yan Zuo ◽  
Li Li Wang ◽  
Hai Tao Wang

The curing characteristics,crosslinking density,compressive permanent deformation,the conventional mechanical properties and dynamic mechanical properties of SBR2564S filled with different carbon black were studied.The results indicated that with the increase in specific surface area of carbon black particles,Mooney viscosity of the resulting mixture increased while the scorch time decreased.As the carbon black particle size increases, tensile strength and tear strength of SBR2564S were reduced,rebound and compressive set were increased.The kinds of carbon black had little effect on the crosslinking density of vulcanized rubber of SBR2564S.It had poor performance on dynamic mechanical properties of the resulting mixture filled with small carbon black particle size.SBR2564S vulcanizates with good comprehensive properties was obtained when N330 was used.


2009 ◽  
Vol 87-88 ◽  
pp. 200-205 ◽  
Author(s):  
Yan He ◽  
Zhong Yin ◽  
Lian Xiang Ma ◽  
Jun Ping Song

Through measuring the thermal conductivities and tensile strength of nature rubbers filled with carbon black and comparing with each other, it is shown that the difference of carbon black particle size and the structure affects on the thermal conductivity and tensile strength of nature rubber. Thermal conductivities of carbon black-filled nature rubber are enhanced with the increase of volume fraction of filler; tensile strength of composite increases first and then decreases with the increase of carbon black volume fraction.


2015 ◽  
Vol 88 (2) ◽  
pp. 276-288 ◽  
Author(s):  
Chang Liu ◽  
Bin Dong ◽  
Li-Qun Zhang ◽  
Qiang Zheng ◽  
You-Ping Wu

ABSTRACT Singularity of strain field at the crack tip of elastomeric material has recently attracted considerable attention. For SBR filled with four different types of carbon black, the strain distribution at the crack tip of the single-edge notched tension specimens are investigated using digital image correlation (DIC) and finite element analysis (FEA). Both DIC and FEA results demonstrate that the larger the carbon black particle size, the less strain amplification at the crack tip of SBR. However, the strain amplification region obtained from FEA simulation is much smaller than the strain amplification observed from DIC, and the reasons are discussed. Critical J-integral (JIC) and tearing modulus (TR) are calculated via J-integral method and are connected to crack initiation and propagation resistance of the SBR, respectively. With increasing carbon black particle size, both JIC and TR decrease. Similar trends also occur for tearing energy deduced from the dynamic mechanical thermal analysis. These results are in agreement with the prediction based on strain amplification at the crack tip.


1982 ◽  
Vol 55 (1) ◽  
pp. 103-115 ◽  
Author(s):  
C. H. Chen ◽  
J. L. Koenig ◽  
J. R. Shelton ◽  
E. A. Collins

Abstract The effect of carbon black upon the reversion process in the sulfur-accelerated vulcanization of natural rubber has been studied. It is found that black-filled cure systems have a faster rate of vulcanization and better reversion resistance. The net decrease of trans-methine content, which is equivalent to the improvement of reversion resistance, is found to be at most 15%, with the initial 10 pphr loading yielding the greatest effect. However, those decreases of trans-methine content are small when compared with the substantial effects of these fillers on the physical-mechanical properties of the vulcanizate, which is a linear function of black loading. In general, the smaller the black particle size, the greater the improvement of the reversion resistance, but particle size alone is not the only factor affecting reversion. A universal curve is obtained for correlating the amount of reversion and trans-methine content, which is independent of any natural rubber-based curing system, operating conditions and type of fillers.


1967 ◽  
Vol 40 (5) ◽  
pp. 1319-1322 ◽  
Author(s):  
Merton L. Studebaker ◽  
Lester G. Nabors

Abstract A simple technique of sample preparation using dry carbon black samples has been developed which gives a carbon black surface of reasonably reproducible reflectance, using a commercially available and reasonably priced reflectance meter. The reflectance values were calibrated against particle size determined by Kraus and Rollmann using the calorimetric procedure of Harkins and Jura.


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