High-performance styrenic thermoplastic elastomer package technology

Once upon a time, the industry was worried about elastomers containing plasticizers, which were not environmentally friendly enough and would cause harm to people's heal.

SEBS has the characteristics of aging resistance, safety and non-toxicity, and green environmental protecti.

In 1996, the project team started from scratch and started the research on SEBS precursor synthesis technology and molybdenum series catalytic hydrogenation technolo.

According to Liang Hongwen, the project achieved four major innovatio.

First, in view of the problems of low 1,2-structure content and uneven distribution of traditional SBS polybutadiene segments, which cannot be used as SEBS precursors, a systematic characterization method for SEBS microstructure was established, and a SEBS precursor microstructure model was establish.

The second is to study the law of the effect of the complex state of the alkyl lithium initiator and the structure regulator on the polymerization rate and microstructure of the monomer, invent the synthesis control method of the SEBS series precursor structure, and realize the design of a wide range of precursor molecular structur.

The third is to reveal the mechanism of metallocene catalytic hydrogenation, invent a new metallocene hydrogenation process, and develop a new technology for efficient removal of trace metal ions in polyme.

Fourth, in view of the mass transfer and heat transfer of high-viscosity materials in the polymerization kettle and the gas-liquid mass transfer and heat transfer of high-viscosity materials in the hydrogenation kettle, the world's largest 80 cubic meters of precursor SEBS polymerization kettle and hydrogenation kettle have been developed to ensure In order to produce high efficiency, low cost and stable product quali.

During the implementation of the project, the project team published 38 papers, obtained 14 Chinese invention patents, and formed 12 Sinopec proprietary technologi.