CONTINUOUS MANUFACTURING PROCESS FOR RUBBER MASTERBATCH AND RUBBER MASTERBATCH PREPARED THEREFROM

摘要

Disclosed are a continuous manufacturing process for a rubber masterbatch and a rubber masterbatch prepared therefrom. The manufacturing process comprises: 1): a filler is added to a rubber solution, forming a rubber/filler/solvent mixture by stirring; 2): the rubber/filler/solvent mixture obtained in step 1) is fed into a coagulator, and is coagulated after optionally being brought into contact and mixed with one or more fluids of nitrogen, steam, water, aqueous slurry of filler, and oil in the coagulator, resulting in a mixture of a rubber/filler composite and a solvent; 3): the mixture obtained in step 2) is directly passed into a heating medium at a temperature higher than the boiling point of the solvent, the polarity of the medium being different from that of the solvent used, the mixture is coagulated and deswelled, and the solvent is evaporated rapidly, thereby forming a mixture of a rubber/filler composite and the solvent containing the heating medium; and 4): the solvent is removed and the remaining mixture is dried, resulting in a rubber/filler masterbatch.

主权项

1. A method for continuously producing a rubber masterbatch. comprising:
Step 1): adding a filler in a rubber solution, and stirring to form a rubber/filler/solvent mixture; Step 2): adding the rubber/filler/solvent mixture of step 1) into a coagulator, and optionally contacting and mixing with one or more fluid selected from the group consisting of nitrogen gas, water vapor, water, slurry of filler and oil so as to coagulate, resulting in a mixture of rubber/filler composite and the solvent; Step 3): adding the mixture obtained step 2) directly into a heating medium with a temperature higher than the boiling point of the solvent, in which the polarity of the heating medium is different from that of the solvent, the mixture being further coagulated and deswollen, and the solvent being evaporated quickly so as to form a mixture of rubber/filler composite containing the heating medium as well as the solvent; step 4): removing the solvent and drying the remaining mixture to obtain a rubber/filler masterbatch; Wherein, the solvent evaporated in step 4) and the monomers not reacted in the synthesis of rubber access into a condenser and a fractionator for recycling, the heating medium is separated, and the mixture separated from the heating medium is transferred into a heating conveyer-belt type dryer and dried in vacuum, inert gas or air; alternatively, the solvent evaporated in step 4) and the monomers not reacted in the synthesis of rubber access into a condenser and a fractionator for recycling, and then, the remaining mixture is processed by extrusion heat drying.