Effect of reynolds number on the dispersion of carbon black in natural rubber latex and filler-rubber interfacial interaction in high-speed jet flow field

2013 ◽  
Vol 34 (7) ◽  
pp. 1071-1075 ◽  
Author(s):  
Jingjie Han ◽  
Yandan Zhang ◽  
Chifei Wu ◽  
Yulu Ma
Keyword(s):  
Reynolds Number ◽  
Carbon Black ◽  
Flow Field ◽  
Natural Rubber ◽  
High Speed ◽  
Natural Rubber Latex ◽  
Jet Flow ◽  
Interfacial Interaction ◽  
Rubber Latex

Electromagnetic wave absorbing properties of carbon black-filled natural rubber latex

2021 ◽  
Author(s):  
Kiadtisak Salayong ◽  
Titipong Lertwiriyaprapa ◽  
Danai Torrungrueng ◽  
Saharat Suksai ◽  
Pornlada Pongmuksuwan ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Black ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Rubber Latex

Carbon black master batch from fresh natural rubber latex

2011 ◽  
Vol 40 (8) ◽  
pp. 420-424 ◽  
Author(s):  
R. Alex ◽  
K. K. Sasidharan ◽  
T. Kurian ◽  
A. K. Chandra
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Master Batch

CHLORINATION REACTION KINETICS OF THE LOW-CONCENTRATION NATURAL RUBBER LATEX

2013 ◽  
Vol 86 (4) ◽  
pp. 604-614 ◽  
Author(s):  
Lanzhen He ◽  
Jieping Zhong ◽  
Jing Chen ◽  
Chenpen Li ◽  
Linxue Kong ◽  
...  
Keyword(s):  
Reaction Time ◽  
Natural Rubber ◽  
Reaction Temperature ◽  
High Speed ◽  
Kinetic Constant ◽  
Natural Rubber Latex ◽  
Chlorination Reaction ◽  
Rubber Latex ◽  
Low Concentration ◽  
Kinetics Of

ABSTRACT The kinetics of the chlorination of low-concentration natural rubber latex was investigated. The kinetic data were derived from chlorine concentrations in chlorinated natural rubber (CNR) for different reaction times and temperatures. The chlorination reaction process can be divided into two stages—a high-speed period (stage 1) and a low-speed period (stage 2)—using the graphed curves of the change in chlorine content with change in reaction time. The relationship of the chlorination conversion ratio x to reaction time t and temperature T can be expressed as x = 1.15 − 0.916e−kt, where the kinetic constant k = 0.00907 + 6.39 × 10−6e0.0211T. The overall apparent reaction order n for the first stage is 4.8, whereas for the second stage it is 1.0, using kinetic fitting. The apparent activation energy Ea was calculated, using the Arrhenius equation, to be 5.32 kJ/mol for stage 2. The lower value of Ea suggests that the chlorination rate is less sensitive to reaction temperature in this stage. The chlorination reaction rate increases with the increase in reaction temperature during stage 2, but the effects are not visible. However, a temperature that is too high may result in energy being wasted. We conclude that the proper reaction temperature in stage 2, taking the kinetic effects into account, is between 323.15 and 353.15 K.

HAF/SILICA/NANOCLAY “TERNARY” MASTERBATCH AND HAF/SILICA BINARY MASTERBATCH FROM FRESH NATURAL RUBBER LATEX

2014 ◽  
Vol 87 (2) ◽  
pp. 250-263 ◽  
Author(s):  
Sasidharan Krishnan ◽  
Rosamma Alex ◽  
Thomas Kurian
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Black ◽  
Natural Rubber ◽  
Abrasion Resistance ◽  
Dynamic Properties ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
X Ray ◽  
Filler Dispersion

ABSTRACT A process for production of carbon black/silica/nanoclay ternary filler masterbatch from fresh natural rubber (NR) latex was standardized. The fillers, nanoclay, carbon black, and silica were incorporated in fresh NR latex by a modified coagulation process. The latex, mixed with filler dispersions, coagulated immediately on addition of acids. The coagulum containing fillers was dried at 70 °C in an air oven to get the latex filler masterbatch, which was further processed in the conventional way. The masterbatch compounds containing only silica/carbon black showed a higher level of vulcanization as compared with the corresponding dry mixes. The mechanical properties, such as tensile strength, modulus, tear strength, abrasion resistance, and hardness, increased with the proportion of nanoclay in the mixes up to 5 phr, and with a greater amount, the change was only marginal. Lower tan delta values were observed for all of the masterbatches containing nanoclay in the ranges of 3 to 10 phr compared with the control dry mix containing 25/25 carbon black/silica. The improvement in mechanical properties and dynamic properties shown by the masterbatches over the conventional mill-mixed compounds was attributed to factors related to filler dispersion, as evidenced from the data from dispersion analyzer images, X-ray diffractograms, and a higher level of vulcanization.

A stealth emulsion based on natural rubber latex, core-shell ferrofluid/carbon black in the S and X bands

2019 ◽  
Vol 30 (31) ◽  
pp. 315703
Author(s):  
S Vinayasree ◽  
Ajalesh Balachandran Nair ◽  
Manoj Mani ◽  
V N Archana ◽  
Rani Joseph ◽  
...  
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Core Shell ◽  
Rubber Latex
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