2results about How to "Improve control regulation" patented technology

This invention relates to the field of olefin polymerization technology, and discloses a novel SiO2-supported nickel catalyst and its application in ethylene polymerization. The catalyst uses a nickel complex containing a pyridine imine structure as the active center, and forms a stable heterogeneous catalytic system through the interaction of anchoring groups with an activated SiO2 support. Compared with traditional homogeneous nickel catalysts, this SiO2-supported nickel catalyst exhibits higher catalytic activity and better thermal stability in ethylene homopolymerization and copolymerization reactions, and can maintain stable polymerization performance over a wide temperature range. At the same time, by designing the catalyst structure and controlling the loading method, the molecular weight, molecular weight distribution, and branching degree of the polymer can be effectively adjusted, thereby achieving controllable adjustment of the structure and properties of polyethylene.

The application relates to the technical field of rubber adhesives, and discloses a particle-size-adjustable master batch preparation device for rubber adhesive production, which comprises a forming groove and a forming funnel, the inside of the forming groove is fixedly connected with a sliding plate, one side of the upper portion of the forming groove is fixedly connected with a cooling liquid flow circulation limiting plate, and the inside of the other side of the sliding plate is provided with a cooling liquid discharge hole. The particle-size-adjustable master batch preparation device and method for rubber adhesive production can drive the lower portion of a primary forming plate to install or dismount an auxiliary forming plate according to the particle size, simultaneously adjust the position of a telescopic column in a forming plate adjusting movable hole, and the outside of the forming plate adjusting movable hole is provided with three grooves, so that the telescopic column can be clamped in the corresponding groove, the primary forming plate and the auxiliary forming plate are driven to be installed in alignment with the grooves in a discharging base, and the size of a discharging hole can be conveniently controlled and adjusted.