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A few days ago, the 120,000-ton/year solution-polymerized styrene-butadiene rubber process package and the 50,000-ton/year SEBS process package independently developed by Lanzhou Chemical Research Center of China Petroleum and Petrochemical Research Institute passed the experts organized by the China Chemical Industry Association.
The review indicates that the center has mastered the mature high-performance solution-polymerized styrene-butadiene rubber and styrene elastomer hydrogenation technology in the field of synthetic rubber
.
The review expert group believes that the process design and equipment selection of the above two process packages are reasonable and feasible, the process technology is mature, the indicators are advanced, and the "three wastes" discharge meets the relevant environmental protection requirements, which can be widely promoted and applied
.
Among them, the 120,000-ton/year solution-polymerized styrene-butadiene rubber process package has developed two key technologies for the high-performance requirements of domestic high-performance green tires for tread rubber materials: matching control of styrene/vinyl content and precise Control technology and SBR functionalization technology
.
On this basis, they have completed the development of 8 grades of products with low, medium and high styrene content, including special products for snow tires and ultra-high performance tires, and functionalized series products
50,000 tons/year SEBS process package Aiming at the problems of poor aging resistance and yellowing resistance of thermoplastic elastomer SBS, a complete set of thermoplastic elastomer SBS hydrogenation technology has been developed
.
Through process optimization and engineering technology development, they have developed an efficient and stable nickel-based hydrogenation catalytic system and efficient metal ion removal process technology; optimized the process flow of polymerization, hydrogenation, coagulation, post-treatment, solvent recovery and other processes , design parameters and the structure and type of key equipment; product hydrogenation degree and residual metal ions can reach the advanced level of similar foreign products
