59
Improvement Of Wet Traction Without Sacrificing Rolling Resistance By Employing Organic Sulfur Vulcanizer For Solution SBR and Silica Based Tire
Jinhwan Kim1, Hong-Dae Lee2 , Je-Hwan Park2 , Ki-Un Park2, Hai Vothi2, Dong-Wook Kim3 , and Chang-Hwan Kim3
1Department of Polymer Science and Engineering, Polymer Technology Institute, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea.
2M&B GreenUs Co., Ltd., Gasan-dong, Geumcheon-gu, Seoul 153-023, Republic of Korea.
3 Nexen Tire Co., 30, Yusan-Dong, Yangsan-Si, Kyungnam 626-230, Republic of Korea.
Abstract
In order to improve wet traction of the tire based on a solution SBR (S-SBR) and silica, an organic sulfur vulcanizer was synthesized by reacting inorganic sulfur with cardanol conpound. The success of synthesis was confirmed by 1H-NMR and FT-IR spectroscopy. The rubber compounds were manufactured by employing S-SBR, Silica, Carbon black (CB), and sulfur vulcanizer and various properties of compounds such as viscosity, modulus, abrasion, and wet traction were evaluated. The results are compared as a function of different sulfur vulcanizer type: Inorganic sulfur (Inorg-S), Organic sulfur (Org-S), and the blend of Inorg-S and Org-S. It was found that the use of Org-S improves the wet traction without sacrificing the rolling resistance of the rubber compound.
Polymer / Silica / CB |
S-SBR / Silica / CB = 100 / 70 / 5 (Si-69=5.6 PHR) |
|||
Inorg-S (phr) : Org-S (phr) |
1.5 : 0 |
2.1 : 0 |
1.5 : 2.0 |
1.0 : 2.0 |
Sulfur (+) 0.6 |
Org-S (+) 2.0 |
Sulfur (-) 0.5 Org-S (+) 2.0 |
||
M/V |
81 |
80 |
77 |
79 |
T40 |
5.8 |
5.6 |
5.0 |
5.3 |
Scorch (¢30) |
11.39 |
10.18 |
9.12 |
10.53 |
M-300% |
112 |
140 |
141 |
130 |
William Abrasion (%) |
1.6 |
1.02 |
1.09 |
0.9 |
FPS (Estimated Miles) |
50,071 |
53,442 |
60,944 |
54,873 |
Tg (°C) |
-9.2 |
-9.3 |
-9.4 |
-7.6 |
Tan δ (0°C) |
0.7228 (100) |
0.7425 (103) |
0.7860 (109) |
0.8599 (119) |
Wet Skid No. (BPN) |
33 (100) |
33.4 (101) |
35.8 (108) |
36.6 (111) |
Keywords:Solution SBR, Organic Sulfur Vulcanizer, Silica, Wet traction, Rolling Resistance
References
1) Bijarimi M., Zulkafli H., and Beg M.D.H. Journal of Applied Sciences 2010; 10(13): 1345-1348.
2) Rodgers B, Solis S. Tambe N., Sharma B. Rubber Chemistry and Technology 2008; 81(4): 600-624.
3) Burford R.P., Pittolo M. Journal of Materials Science 1984 ; 19(9): 3059-67.