scholarly journals Effect of latex reclaim on physico-mechanical and thermal properties of carbon black filled natural rubber/butadiene rubber composite

2021 ◽  
Author(s):  
Vaishak Nambiathodi ◽  
Siby Varghese ◽  
Neethu Varghese
Keyword(s):  
Thermal Properties ◽  
Carbon Black ◽  
Natural Rubber ◽  
Mechanical And Thermal Properties ◽  
Butadiene Rubber ◽  
Rubber Composite

Irradiated rubber composite with nano and micro fillers for mining rock application

2019 ◽  
Vol 107 (8) ◽  
pp. 737-753
Author(s):  
Hanan M. Eyssa ◽  
Wael S. Mohamed ◽  
Mai M. El-Zayat
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Thermal Properties ◽  
Carbon Black ◽  
Field Emission ◽  
Rubber Matrix ◽  
Styrene Butadiene Rubber ◽  
Mechanical And Thermal Properties ◽  
Butadiene Rubber ◽  
Scanning Electron

Abstract In this work, nanosilica and micro carbon black (CB) as a fillers were used to improve the properties of styrene butadiene rubber/natural rubber blends (SBR/NR) crosslinked by γ radiation. Nanosilica was prepared from silica sand and used as eco-friendly material. These composites were characterized by field emission scanning electron microscopy (FESEM) and the measurements of the physic-mechanical and thermal properties were measured. Field emission scanning electron microscopy showed that the composites reinforced by nanosilica and the measurements of the CB are uniformly dispersed in the blends matrix. The results showed that the physico-mechanical and thermal properties were improved indicating a good interaction between the fillers and rubber matrix. The volume fraction measurements confirmed the formation of crosslinking network structure. Meanwhile, the reinforcement of SBR/NR blend loaded with nanosilica showed improved mechanical than blend loaded with both the nanosilica/carbon black and the CB alone. The highest enhancement was obtained for the three fillers by using a concentration of 35 phr at a dose of 150 kGy of γ-irradiation. Thermogravimetric analysis (TGA) indicated that the thermal stability of SBR/NR blend reinforced by nanosilica is higher than those blends reinforced with combined filler the silica. It was also found that the irradiated SBR/NR nanocomposites were more stable than the un-irradiated ones.

Mechanical and Thermal Properties of Carbon Black Filled Natural Rubber and Fractal Analysis of Rubber Fracture Surfaces

2012 ◽  
Vol 501 ◽  
pp. 479-483 ◽  
Author(s):  
Bin Zhang ◽  
Yan He ◽  
Lian Xiang Ma
Keyword(s):  
Fractal Dimension ◽  
Thermal Properties ◽  
Carbon Black ◽  
Natural Rubber ◽  
Mechanical And Thermal Properties ◽  
Fracture Surfaces ◽  
Rubber Compounds ◽  
Reinforcing Fillers ◽  
Sustained Increase ◽  
Variation Tendency

Carbon black has been used as the main reinforcing fillers that increase the usefulness of rubbers. In this experiment, different compounds based on natural rubber were prepared with carbon black (N330) at various loading ratios from 10 to 125 phr. The mechanical and thermal properties of rubber compounds were measured and the test data with SEM micrographs were analyzed to determine the suitable ratio of carbon black for the desired properties of rubber compound. The results showed that carbon black particles were well dispersed in compounds with loading ratios of 25-30 phr, corresponding to maximum tensile strength values. While with the increase of carbon black content, heat conductivity kept sustained increase. Fractal dimension characterized the degree of uneven dispersion of carbon black in rubber fracture surfaces. A particular value of fractal dimension was obtained to characterize the optimum mechanical property of carbon black filled natural rubber. The thermal property and fractal dimension demonstrated same variation tendency.

Effect of carbon allotropes on foam formation, cure characteristics, mechanical and thermal properties of NRF/carbon composites

2020 ◽  
pp. 0021955X2097954
Author(s):  
Pollawat Charoeythornkhajhornchai ◽  
Wutthinun Khamloet ◽  
Pattharawun Nungjumnong
Keyword(s):  
Natural Rubber ◽  
Bubble Diameter ◽  
Carbon Composites ◽  
Mechanical And Thermal Properties ◽  
Foam Formation ◽  
Carbon Filler ◽  
Composite Foam ◽  
Carbon Allotropes ◽  
Blowing Agent ◽  
Rubber Composite

Natural rubber composite foam with carbon such as carbon black (CB), carbon synthesized from durian bark (CDB), graphite (GPT), graphene oxide (GO), graphene (GPE) and multi-walled carbon nanotubes (MWCNT) was studied in this work to investigate the relationship between foam formation during decomposition of chemical blowing agent mechanism and crosslink reaction of rubber molecules by sulphur. Natural rubber composite foam with carbon particle was set at 3 parts per hundred of rubber (phr) to observe the effect of carbon allotropes on foam formation with different microstructure and properties of natural rubber composite foam. The balancing of crosslink reaction by sulphur molecules during foam formation by the decomposition of chemical blowing agent affects the different morphology of natural rubber foam/carbon composites leading to the different mechanical and thermal properties. The result showed the fastest cure characteristics of natural rubber foam with 3 phr of graphene (NRF-GPE3) which was completely cure within 6.55 minutes (tc90) measured by moving die rheometer resulting in the smallest bubble diameter among other formulas. Moreover, natural rubber foam with 3 phr of MWCNT (NRF-MWCNT3) had the highest modulus (0.0035 ± 0.0005 N/m2) due to the small bubble size with high bulk density. In addition, natural rubber foam with 3 phr of GPT (NRF-GPT3) had the highest thermal expansion coefficient (282.12 ± 69 ppm/K) due to high amount of gas bubbles inside natural rubber foam matrix and natural rubber foam with 3 phr of GO (NRF-GO3) displayed the lowest thermal conductivity (0.0798 ± 0.0003 W/m.K) which was lower value than natural rubber foam without carbon filler (NRF). This might be caused by the effect of bubble diameter and bulk density as well as the defect on surface of graphene oxide compared to others carbon filler.

scholarly journals Mechanical and Thermal Properties of Kenaf Reinforced Thermoplastic Polyurethane (TPU)-Natural Rubber (NR) Composites

2018 ◽  
Vol 19 (2) ◽  
pp. 446-451 ◽  
Author(s):  
A. M. Noor Azammi ◽  
S. M. Sapuan ◽  
M. R. Ishak ◽  
M. T. H. Sultan
Keyword(s):  
Thermal Properties ◽  
Natural Rubber ◽  
Thermoplastic Polyurethane ◽  
Mechanical And Thermal Properties

Polyurethane/ground tire rubber composite foams based on polyglycerol: Processing, mechanical and thermal properties

2015 ◽  
Vol 34 (9) ◽  
pp. 708-717 ◽  
Author(s):  
Łukasz Piszczyk ◽  
Aleksander Hejna ◽  
Magdalena Danowska ◽  
Michał Strankowski ◽  
Krzysztof Formela
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Composite Foams ◽  
Rubber Composite
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