文章摘要
Influence of Molecular Structure of Different Grades of SSBR on Properties of Its Compound
Received:April 30, 2024  Revised:May 24, 2024
DOI：10.12136/j.issn.1000-890X.2025.07.0511
Key Words: SSBR；functionalization；silica；loss factor
Author NameAffiliationE-mail
CHEN Xin* Sinopec Hunan Petrochemical Co.，Ltd 13973010065@163.com 
FANG Xiong Sinopec Hunan Petrochemical Co.，Ltd  
CHEN Yijiao Sinopec Hunan Petrochemical Co.，Ltd  
LI Fushi Sinopec Hunan Petrochemical Co.，Ltd  
LI Luyao Sinopec Hunan Petrochemical Co.，Ltd  
YAN Fucheng Sinopec Hunan Petrochemical Co.，Ltd  
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Abstract:
      The influence of molecular structure of different grades of solution polymerized styrene butadiene rubber（1 ordinary SSBR and 3 functionalized SSBR） on properties of its compound was investigated.The results indicated that，the molecular weight distribution of ordinary SSBR2550 was wide，the molecules of SSBR5251H and SSBRHPR850 were four arm coupling，the molecule of SSBR4602 was double arm coupling.The Mooney viscosities and bound rubber contents of the functionalized SSBR5251H，SSBR4602 and SSBRHPR850 compounds were significantly greater than those of the non functionalized SSBR2550 compound，and the filler dispersion was significantly better than that of SSBR2550 compound.The loss factor（tanδ） and compression fatigue temperature rise of the ordinary SSBR2550 compound were the highest，while the tanδ and compression fatigue temperature rise of the functionalized SSBR4602 compound were the lowest.The wear resistance of the functionalized SSBR4602 vulcanizate was the best，the tensile stress at 0～250% strain was the greatest.Overall，the functionalized SSBR4602 compound had the best performance，it was suitable for the tread compound of green tire.
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