OPTIMIZATION OF MIXING CONDITIONS FOR SILICA-REINFORCED NATURAL RUBBER TIRE TREAD COMPOUNDS

被引：130
作者：
Kaewsakul, W. [1 ,2 ]
Sahakaro, K. [1 ,2 ]
Dierkes, W. K. [1 ]
Noordermeer, J. W. M. [1 ]
机构：
[1] Univ Twente, Dept Elastomer Technol & Engn, NL-7500 AE Enschede, Netherlands
[2] Prince Songkla Univ, Fac Sci & Technol, Ctr Excellence Nat Rubber Technol CoE NR, Dept Rubber Technol & Polymer Sci, Pattani 94000, Thailand
来源：
RUBBER CHEMISTRY AND TECHNOLOGY | 2012年 / 85卷 / 02期
关键词：
FILLER ELASTOMER INTERACTIONS; DYNAMIC PROPERTIES; CARBON-BLACK; FLOCCULATION;
D O I：
10.5254/rct.12.88935
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The dump temperature and mixing interval between rubber, silica, and silane coupling agent for silica-filled natural rubber (NR) tire tread compounds using bis-triethoxysilylpropyl tetrasulfide (TESPT) as silane were optimized. The dump temperature turns out to be the key parameter governing the properties of the silica-filled NR compounds. The increase in viscosity of the compounds by changing the dump temperature from 100 to 150 degrees C indicates that inevitably some cross-linking of NR occurs by sulfur contained in TESPT, simultaneous with the silanization reaction between silica and silane. However, the viscosity decreases again when dump temperatures above 150 degrees C are applied, indicating a dominant occurrence of degradation of the NR molecules. The results are in good agreement with bound rubber contents. The overall properties indicate that a dump temperature in the range of 135-150 degrees C and a silica silane rubber mixing interval of 10 min are the most appropriate mixing conditions for silica-filled NR compounds with TESPT as coupling agent. [doi:10.5254/rct.12.88935]
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页码：277 / 294
页数：18
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