English Abstract

Influence of Mastication of Isoprene Rubber on Mixing

Koji OKAMOTO *1
Michiharu TOH *2
*1:Nihon Spindle Manufacturing Co.,Ltd, Amagasaki-city, Hyogo, Japan
*2:Professor Emeritus, Kurume National College of Technology, Kasuyagun, Fukuoka, Japan
Nippon Gomu Kyokaishi,(2019),92(10),376-382 Original Paper in Japanese

In this study, mastication of isoprene rubber by each of kneader and open mill was compared. In addition, the influence of mastication time in mixing isoprene rubber and carbon black by kneader, in other words, it was investigated how the difference in mastication state of raw rubber at the stage of carbon black addition influences mixing and the dispersion of carbon black. As a result, by extending the mastication time of isoprene rubber, it was found that black incorporation time (BIT) was shortened, which improved the dispersion of carbon black.

(Received on June 3, 2019)
(Accepted on July 23, 2019)
Keywords: Mastication, Kneader, Open Mill, Isoprene Rubber, Carbon Black, Dispersion, BIT