China develops new rubber anti-aging agent to break through international technology blockade

The reporter learned from Qingdao University of Science and Technology that after completing the pilot test in the key process of the new rubber anti-aging agent 4020, the school has significantly reduced the production cost compared with the prior art, realized zero discharge of wastewater, simplified the process flow, and invested in the device. Reduced by 1/3.

Rubber products such as tires may have cracks, whitening, and physical and mechanical properties during use. These phenomena are collectively referred to as "aging." In order to manufacture a durable rubber product, a substance capable of suppressing the above various aging phenomena is added to the compound, and these substances are collectively referred to as an antioxidant.

Antioxidant 4020 is an important anti-aging agent that must be added to the tire, and the quality of the anti-aging agent plays a vital role in the service life of the tire and the safety of the tire. At present, the production of China's national defense agent 4020 has shortcomings such as high energy consumption, poor quality, large investment, and sewage discharge. However, due to high technical content and foreign technology blockade, China does not currently have a large-scale production device for this technology.

Through a thorough study, the team of Ding Jun Committee of Qingdao University of Science and Technology solved the problems of side reaction control, catalyst recycling, recovery, energy cascade utilization, etc., and the condensation catalyst consumption was reduced to 20%, and the amount of impurities was reduced by 50%. The energy consumption is reduced to 40%, and the original toxic waste water is reused in the hydration system. Compared with the original technology, the cost is greatly reduced, and zero discharge of wastewater is realized in the true sense. In the production technology of antioxidant 4020, through the research on the reaction mechanism and poisoning mechanism of the catalyst, a new multifunctional and highly selective hydrogenation catalyst was developed, which greatly reduced the investment and energy consumption; and the product content was stable at 99.5%. Above, the crystallization point is above 47 °C, which has reached the best level of product quality in the world.