DISCUSSION ABOUT THERMAL CONDUCTIVITY OF CARBON BLACK FILLED RUBBER

2015 ◽  
Vol 6 (2) ◽  
pp. 159-172 ◽  
Author(s):  
Junping Song ◽  
Lianxiang Ma ◽  
Yan He ◽  
Wei Li ◽  
Shi-Chune Yao
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Filled Rubber

Thermal Conductivity of Nature Rubber Filled with Carbon Black

2009 ◽  
Vol 87-88 ◽  
pp. 86-91 ◽  
Author(s):  
Yan He ◽  
Hai Tao Li ◽  
Lian Xiang Ma
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Volume Fraction ◽  
Theoretical Models ◽  
Filled Rubber ◽  
Filler Fraction ◽  
Thermal Conductivities

The thermal conductivities of two rubbers filled with different carbon black (N330 and N375) are measured by experiments, and compared with five theoretical models calculated results. It is shown that thermal conductivity of carbon-filled rubber is obviously enhanced with increase of the volume filler fraction of carbon black and the thermal conductivity of carbon-filled rubber is related to the microstructure and morphology of carbon black. The estimated thermal conductivities by using the model proposed in our previous paper are of the same variation as the experimental ones of N330 carbon/rubber and N375 carbon/rubber during the range of volume fraction from 2% to 20%.

Dependence of Thermal Conductivity of Carbon Black Filled Rubber on Several Factors

2009 ◽  
Vol 87-88 ◽  
pp. 536-541 ◽  
Author(s):  
Jun Ping Song ◽  
Lian Xiang Ma
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Natural Rubber ◽  
Influencing Factors ◽  
Specific Area ◽  
Volume Percent ◽  
Filled Rubber ◽  
Two Factors

Five kinds of carbon black filled natural rubber were prepared, and thermal conductivity was studied considering two factors, which include temperature and volume percent of the filler. It was found that thermal conductivity had relevance to temperature and volume percent of carbon black, besides, structure and specific area of carbon black were also very important influencing factors. Moreover, reuniting phenomenon of nanometer grade of carbon black has much effect on thermal conductivity.

Temperature of the Rubber Wheel during Wear Testing on a Lambourn Abrader

1996 ◽  
Vol 69 (1) ◽  
pp. 62-72 ◽  
Author(s):  
R. Ramakrishnan ◽  
J. Kliman ◽  
J. A. Donovan
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Contact Zone ◽  
Sliding Friction ◽  
Wear Testing ◽  
Grinding Wheel ◽  
Infrared Thermometry ◽  
Steel Wheel ◽  
Filled Rubber ◽  
Deformation Hysteresis

Abstract Contact of a slipping rubber wheel with the grinding wheel during wear testing on a Lambourn abrader cools the rubber wheel in the contact zone because: (a) the relatively high thermal conductivity of the grindstone conducts the heat into the grindstone; and (b) there is little or no sliding, and therefore no heat generated by sliding. The temperature increase, measured on the rubber wheel outside the contact zone, results from compression and adhesional or tangential deformation hysteresis, and is not from sliding friction. Therefore, the temperature in the wear zone is only 5–10°C above the ambient, and does not simulate the temperature developed in a tire during use. These conclusions are based on real time infrared thermometry of a carbon black filled rubber wheel rotating against an alumina grindstone, a steel wheel and a HDPE wheel at slips ranging from 0 to 13.5% and speeds from 65 to 400 rpm.

Contribution of Carbon Black to Thermal Conductivity of Natural Rubber

2013 ◽  
Vol 561 ◽  
pp. 158-163 ◽  
Author(s):  
Jun Ping Song ◽  
Lian Xiang Ma
Keyword(s):  
Thermal Conductivity ◽  
Carbon Black ◽  
Natural Rubber ◽  
Filler Loading ◽  
Considerable Improvement ◽  
Middle Level ◽  
Rubber Composites ◽  
Filled Rubber ◽  
The Poor ◽  
Natural Rubber Composites

Eight kinds of carbon black filled natural rubber composites were prepared, and thermal conductivity was studied. Acetylene black contributes much to the thermal conductivity of rubber, and tiny loading results in considerable improvement. The conductive carbon black 40B2 is advantageous for the improvement in thermal conductivity of rubber when its loading reaches middle level, and at its middle level, also tiny loading results in much improvement. Most kinds of carbon black for rubber application filled rubber composites have good properties except for N134 and N660, especially the poor contribution of N660. Additionally, in the case of carbon black filled rubber composites, addition of filler may not necessarily benefit the thermal conductivity when filler loading is not much.

Studies on dynamic creep of carbon black-filled rubber vulcanizates.

1989 ◽  
Vol 62 (7) ◽  
pp. 448-458
Author(s):  
Kunihiko FUJIMOTO ◽  
Tatsuhiko HATAKEYAMA
Keyword(s):  
Carbon Black ◽  
Filled Rubber ◽  
Dynamic Creep

STUDY ON NANOMORPHOLOGY OF HIGH-STRUCTURE CARBON BLACK AND ITS BOUND RUBBER BY AFM

2012 ◽  
Vol 19 (01) ◽  
pp. 1250003
Author(s):  
JIAN CHEN ◽  
YONGZHONG JIN ◽  
JINGYU ZHANG ◽  
YAFENG WU ◽  
CHUNCAI MENG
Keyword(s):  
Carbon Black ◽  
Cluster Structure ◽  
Chemical Activity ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Atomic Force ◽  
Filled Rubber ◽  
Bound Rubber ◽  
Styrene Butadiene ◽  
High Structure

Bound rubber in carbon black (CB) filled rubber (natural rubber (NR) and styrene–butadiene rubber (SBS)) was prepared by the solvent method. The nanomorphology of CB and rubber/CB soluble rubber was observed by atomic force microscope. The results show that high-structure CB DZ13 has a "grape cluster" structure which consists of many original particles with the grain size of about 30–50 nm. Graphitizing process of CB decreases the amount of bound rubber. The NR/DZ13 soluble rubber with island–rim structure has been obtained, where the islands are DZ13 particles and the rims around the islands are occupied by NR film. But when the graphitized DZ13 particles were used as fillers of rubber, we have only observed that some graphitized DZ13 particles were deposited on the surface of the globular-like NR molecular chains, instead of the spreading of NR molecular chains along the surface of DZ13 particles, indicating that graphitized DZ13 has lower chemical activity than ungraphitized DZ13. Especially, we have already observed an interesting unusual bound rubber phenomenon, the blocked "bracelet" structure with the diameter of about 600 nm in which CB particles were blocked in ring-shaped SBS monomer.

Orthogonal Experiment Analysis of Mechanical Thermal Conductivity on Multi-Component Fillers

2013 ◽  
Vol 753-755 ◽  
pp. 2379-2382
Author(s):  
Shi Meng Xu ◽  
Run Bo Ma ◽  
Jian Hua Du ◽  
Jun Hong Liu ◽  
Qi Jin
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Carbon Black ◽  
Orthogonal Experiment ◽  
Experiment Design ◽  
Rubber Composites ◽  
Orthogonal Experiment Design ◽  
Rubber Composite ◽  
Al Powder ◽  
Experiment Analysis

Filled the N330 carbon black, silica T80 carbon black and Al powder and Fe2O3 magnetic nanoparticles, the rubber composites on multi-component electromagnetic fillers were prepared according to orthogonal experiment analysis, and the preliminary experiment conclusions of the filler prescription designs were given; Based on the experiment design, the mechanical properties and thermal conductivity of the rubber composite were tested, and the testing results were analyzed by using variance analysis. Thus, the paper shows that the effects of N330 on rubber mechanical properties are significant, and the effects of Al powder on the rubber thermal conductivity are significant. Moreover, it is highly emphasized in this paper that the orthogonal experiment design must be carefully explored before the tests are executed.

States of Carbon Black Dispersion and Extensibility of Rubbers

1993 ◽  
Vol 66 (2) ◽  
pp. 317-328 ◽  
Author(s):  
Asahiro Ahagon
Keyword(s):  
Carbon Black ◽  
Tensile Property ◽  
Crosslink Density ◽  
Hydrodynamic Effect ◽  
Property Variation ◽  
Agglomerate Size ◽  
Filled Rubber ◽  
Two Temperatures ◽  
Confined Polymer ◽  
Carbon Black Dispersion

Abstract Analysis is made for the origin of the mixing-induced tensile property variation of a filled rubber. Attention is paid to the hydrodynamic effect f(ϕe) of the filler, defined here as the factor to adjust the deviation of 100% modulus from the theory of rubber elasticity. For the rubbers mixed under variety of conditions, the f(ϕe)'s are calculated from the observed values of the modulus, at 25°C and 100°C, and the crosslink density. The variation of the f(ϕe) is considered to be governed by the mobility of the polymer confined in agglomerates of the filler. The mobility variation due to mixing seems to be mainly influenced by agglomerate size at 25°C, and by agglomerate size and chemical constraints at 100°C. Therefore, the f(ϕe)'s at the two temperatures are suggested to be useful measures of the state of carbon-black micro-dispersion. The extensibility of the rubbers is closely related f(ϕe). This indicates that the failure property is also governed by the mobility of the confined polymer.

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