Dispersed Structure of Filler and Properties of Vulcanized Natural Rubber, Isoprene Rubber and Deproteinized Natural Rubber Filled with Carbon Black

English Abstract

Dispersed Structure of Filler and Properties of Vulcanized Natural Rubber, Isoprene Rubber and Deproteinized Natural Rubber Filled with Carbon Black

Yoshimasa YAMAMOTO ^{*1 *2}

Jinta UKAWA ^{*1 *3}

Atsushi ASANO ^{*1 *4}

Tomoaki IWAI ^{*1 *5}

Seiichi KAWAHARA ^{*1 *6}

Naoaki KURAMOTO ^{*1 *7}

Hirokazu SHINOHARA ^{*1 *8}

Hiroyuki SHIRIIKE ^{*1 *9}

Hiroaki SHINDO ^{*1 *7}

Katsuhiko TAKENAKA ^{*1 *6}

Yoichi TOMINAGA ^{*1 *10}

Yosuke NISHITANI ^{*1 *11}

Hidetoshi HIRAHARA ^{*1 *12}

Ken HORIUCHI ^{*1 *13}

Ai MATSUURA ^{*1 *14}

Norie WATANABE ^{*1 *15}

^*1:Special Subcommittee on Next Generation Elastomer Technology, The Society of Rubber Science and Technology, Japan

^*2:National Institute of Technology, Tokyo College, Hachioji, Tokyo, Japan

^*3:Toyo Tire & Rubber Co., Ltd., Kawanishi, Hyogo, Japan

^*4:National Defense Academy of Japan, Yokosuka, Kanagawa, Japan

^*5:Kanazawa University, Kanazawa, Ishikawa, Japan

^*6:Nagaoka University of Technology, Nagaoka, Niigata, Japan

^*7:Zeon Corporation, Kawasaki, Kanagawa, Japan

^*8:Meiji Rubber & Chemical Co., Ltd., Ashigarakami, Kanagawa, Japan

^*9:Bando Chemical Industries, Ltd., Kakogawa, Hyogo, Japan

^*10:Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan

^*11:Kogakuin University, Hachioji, Tokyo, Japan

^*12:Iwate University, Morioka, Iwate, Japan

^*13:Sumitomo Riko Co., Ltd., Komaki, Aichi, Japan

^*14:Sumitomo Rubber Industries, Ltd., Kobe, Hyogo, Japan

^*15:Bridgestone Corporation, Kodaira, Tokyo, Japan

Nippon Gomu Kyokaishi,(2017),90(10),470-474 Original Paper in Japanese

Relationship between morphology and mechanical properties of vulcanized rubber samples filled with carbon black was investigated. Samples of natural rubber (NR), isoprene rubber (IR) and deproteinized natural rubber (DPNR) were prepared using an internal mixer with a pair of 6-inch or 8-inch rolls. Dispersion of carbon black was evaluated by transmission electron microscopy and small-angle/ultra-small-angle X-ray scattering. Difference in tensile strength of the NR samples prepared by different pairs of the rolls was very small. This may be attributable to almost equal quality of the carbon black dispersion in the two kinds of NR samples. The tensile strength and volume resistivity of the IR sample were different from those of NR and DPNR samples, because of different quality of carbon black dispersion between IR and the other samples.

(Received on January 17, 2017)
(Accepted on July 20, 2017)

Keywords: Natural Rubber, Isoprene Rubber, Deproteinized Natural Rubber, Carbon Black, TEM, SAXS/USAXS