Preparation of carbon black/natural rubber latex masterbatch in bead form

2001 ◽  
Vol 82 (2) ◽  
pp. 489-498 ◽  
Author(s):  
P. Tangboriboonrat ◽  
C. Rakdee
Author(s):  
Kiadtisak Salayong ◽  
Titipong Lertwiriyaprapa ◽  
Danai Torrungrueng ◽  
Saharat Suksai ◽  
Pornlada Pongmuksuwan ◽  
...  

2011 ◽  
Vol 40 (8) ◽  
pp. 420-424 ◽  
Author(s):  
R. Alex ◽  
K. K. Sasidharan ◽  
T. Kurian ◽  
A. K. Chandra

2014 ◽  
Vol 87 (2) ◽  
pp. 250-263 ◽  
Author(s):  
Sasidharan Krishnan ◽  
Rosamma Alex ◽  
Thomas Kurian

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.


2019 ◽  
Vol 30 (31) ◽  
pp. 315703
Author(s):  
S Vinayasree ◽  
Ajalesh Balachandran Nair ◽  
Manoj Mani ◽  
V N Archana ◽  
Rani Joseph ◽  
...  

2013 ◽  
Vol 821-822 ◽  
pp. 961-964 ◽  
Author(s):  
Dan Fan ◽  
Xiao Xue Liao ◽  
Shuang Quan Liao ◽  
Yan Fang Zhao ◽  
Jie Sun

Stable aqueous solution of purple carbon black (PCB) was prepared first and then added to prevulcanized natural rubber latex. The effects of the amount of PCB, silane coupling agent and the type of silane coupling agent on the mechanical properties of the vulcanized latex film were researched. The results show that the best mechanical properties were obtained when the vulcanized film was filled with 6 phr PCB modified by KH560. TG shows that thermal stability of the film with PCB modified by KH560 increased. DSC shows that the glass transition temperature of the film increased after adding PCB.


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