2results about How to "Less harsh" patented technology

This invention relates to the field of uranium resource technology, and more particularly to a direct reduction and conversion system for depleted uranium hexafluoride and its method of use. It includes: a liquid sodium supply unit for providing molten liquid sodium; a gaseous DUF6 supply unit for providing DUF6 that has been heated and stabilized to a gaseous state; a sodium thermal reduction reaction unit connected to both the liquid sodium supply unit and the gaseous DUF6 supply unit, wherein the liquid sodium and gaseous DUF6 react in the sodium thermal reduction reaction unit; a product separation unit connected to the sodium thermal reduction reaction unit for separating and classifying the solid products generated in the sodium thermal reduction reaction unit; and a tail gas recovery unit connected to the sodium thermal reduction reaction unit for condensing the gas discharged from the sodium thermal reduction reaction unit to obtain condensate, collecting sodium vapor and other volatile substances in the gas, purifying the gas, and discharging it after testing to ensure it meets emission standards. This method has a simple process, optimized reaction conditions, and is easier to implement.

The invention discloses a plasticizer, a preparation method thereof and a rubber material, the plasticizer has a cyclohexane diester structure, and a substituent group is selected from H or C1-C12 alkyl and is not H at the same time. The structural characteristics of the plasticizer provided by the invention can endow the plasticizer with good environmental protection property and base material compatibility, the plasticizer has excellent performance in rubber plasticizing application, has good compatibility with rubber base materials such as HNBR, can effectively improve the mechanical properties and low-temperature properties of rubber products, is free of biotoxicity, is not easy to migrate out, and is suitable for industrial production. The requirements of the fields of food packaging, medical instruments, children products and the like on environment-friendly plasticizers can be met. According to the preparation method, a one-step esterification method is adopted, specific alkyl-substituted cyclohexanol and dibasic acid or anhydride are taken as raw materials, and the raw material ratio, reaction conditions and post-treatment flow are accurately controlled, so that efficient preparation of the plasticizer is realized, the production flow is simplified, and the reaction condition harshness and the production cost are reduced; the large-scale industrial production is easy to realize.