High-performance styrene thermoplastic elastomer complete set of technology: to achieve "rubber gold" made in China, a magnificent 70 years of struggle for a new era

Once upon a time, the industry was worried about elastomers containing plasticizers, which were not environmentally friendly enough to cause harm to people's health. Under the joint attack of Sinopec Balling Petrochemical Company, Sichuan University, Beijing Chemical University, Hunan Baili Engineering Technology Co., Ltd., etc., after 15 years, China has finally developed SEBS industrialization complete sets of technology with independent intellectual property rights, making green SEBS an alternative material, and improving the core competitiveness of China's medical, consumer electronics, daily necessities and other industries closely related to the national economy and people's livelihood. A new generation of high-performance styrene thermoplastic elastomer complete set of technology projects, also won the 2014 National Science and Technology Progress Award

.SEBS has the characteristics of anti-aging, safe and non-toxic, green environmental protection, in the industry has "rubber gold", mainly used in drug packaging, medical infusion equipment, large-span lubricants, food packaging, wire and cable, sealing materials, plastic modified, high-grade asphalt correction and contact with the human body elastic materials and other fields.
According to Liang Hongwen, the first finisher of the project and deputy director of the rubber center of the Balling Petrochemical Synthetic Rubber Division, before SEBS was successfully domesticated, its technology was monopolized by two companies in the United States and Japan.
"We visited the United States and wanted the other side to transfer technology, but it was rejected."
," Liang Hongwen recalls.
at the time, the company only transferred low-end SBS production technology to Brazil, at a cost of $20 million for software alone.
Since then, there have been a number of units in China to carry out SEBS small trial research, because of the polymer microstructure design control and hydrogenation technology failed to make a breakthrough, can not achieve industrialization, resulting in SEBS import price of up to 50,000 to 80,000 yuan / ton, directly affecting the competitiveness of China's downstream industry.1996, the project team started from scratch and began research on SEBS pre-drive synthesis technology and Mao system catalytic hydrogenation technology.
1998, the project team completed the SEBS small test study and passed the Sinopec technical appraisal, in 2003 completed the SEBS pilot technology development.
News of our successful pilot came out that a Japanese company had approached us to seek cooperation to advance industrialization together, but we did not agree that we wanted to accomplish this feat on our own.
," Liang said.
In March 2006, the first set of domestic SEBS industrialization device with fully independent intellectual property rights was put into operation in the Baring Petrochemical Synthetic Rubber Division, and successively completed the industrial testing of a total of 11 grade products in the line and star series, the product performance is stable, recognized by users, to fill the gap in domestic SEBS production;, according to Liang Hongwen, the project achieved four major innovations.First, in view of the traditional SBS polybutylene chain segment 1,2-structure content is low, uneven distribution, can not be used as SEBS pre-vehicle problem, established the SEBS microstructure system characterting method, established the SEBS pre-body microstructure model, invented to meet different performance requirements of the SEBS series of pre-body structure design method.2 is to study the law of the effect of the alkyl lithium trigger and structural regulator on the polymerization rate and microstructure of the monogam, invents the synthetic control method of the structure of the SEBS series of pre-driven bodies, realizes the wide-range design and fine stability control of the molecular structure of the pre-drive, and develops a total of 11 brand products in the two series of star and line types.3 is to reveal the catalytic hydrogenation of Mao metal, invented a new process of hydrogenation of Mao metal, developed a new technology for the efficient removal of trace metal ions in high-concentration, catalyst amount is only 10% to 15% of the nickel process, energy consumption significantly reduced, green environmental protection, product quality to meet the standards of medical and health standards.4 is for polymerized kettle high viscosity material mass transmission, heat transmission and hydrogenation kettle in high viscosity material gas-liquid mass transmission, heat transmission problems, the development of the world's largest 80 cubic meters of pre-drive SEBS polymer kettle and hydrogenation kettle, to ensure efficient production, low cost and product quality and stability.
basis, the 10,000-ton Mao system hydrogenated SEBS complete set of technology formed.the implementation of the project, the project team published 38 papers, won 14 Chinese invention patents, and formed 12 Sinopec know-how.