China's rare earth isoprene rubber technology leapt to the world

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences developed 30,000 tons / year of rare earth isoprene rubber sets industrialization of technological achievements , last week in Beijing by the Chinese Academy of Sciences organized by the outcome of the identification . The Group believes that the project as a whole has reached the international advanced level , marking China's rare earth isoprene rubber production technology has been at the forefront of the world . China Rubber Industry Association certified materials testing research center showed that the project produces isoprene rubber products industrial performance than similar foreign products , can completely replace the natural rubber used TBR tire tread .

According to reports, the set of technologies has applied for 73 patents at home and abroad , the formation of independent intellectual property rights system. The complete set of technical results compared with existing similar technologies abroad , with the largest single-line capacity , the lowest energy and material consumption , energy saving and environmentally advanced features , isoprene rubber products catalyst cost per ton fell to 800 yuan less than the overall energy consumption of the entire device abroad reduced by 20% . More importantly, the project for the first time to achieve a complete replacement of rare earth isoprene rubber natural rubber for tire production , development of rare earth isoprene rubber market space , get rid of the country totally dependent on natural rubber , rubber industry for enhancing China 's overall technology levels, and promote China's large variety of synthetic rubber production technology research and development of independent significance .

According to technical personnel , the entire technology is based on self-developed catalyst , polymerization, condensation and post-processing technology as the core , the integration of advanced reactor technology , automatic control technology and energy saving technology developed the first set of 30,000 tons / year of rare earth isoprene rubber technology package . Technology package design reasonable, stable device operation , energy consumption, material consumption is low, the "three wastes " discharge less, according to the technology package has built the largest single production capacity at home and abroad of industrial production equipment .

The high catalyst efficiency is a major feature set of technologies . RE project team proposed a new mechanism of olefin polymerization catalysis double , based on the development of catalysts with high activity, high cis- oriented , low cost and relative molecular mass of the product and its distribution controlled (Mw / Mn ≤ 2.5) the characteristics of its catalytic activity of 0.18 kg of rare earth neodymium / xanthan gum , improve the utilization of rare earth elements from the traditional 8% to 10 % to nearly 100 %, polymerization time from 6 to 7 hours shortened to less than the current three hours , compared with foreign catalyst efficiency nearly 1 times the product cis content of more than 97%.

In addition , the project also developed a system for high viscose liquid continuous series of multi- reactor polymerization , condensation, post-treatment and solvent recovery technology, including patents and proprietary technology, while addressing the system , such as high viscosity rubber glue heat balance and transmission engineering and technical problems, the entire device to reduce overall energy consumption by 20% compared with similar foreign technology .


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