Method for adding final mixing chemicals into open mixing mill

Abstract

The invention relates to a method for adding final mixing chemicals into an open mixing mill. The method includes the steps of masterbatch mixing, cooling, primary masterbatch smashing, primary masterbatch turning, chemical addition, secondary masterbatch turning, secondary masterbatch smashing, pull cut and discharge. The method for adding the final mixing chemicals into the open mixing mill has the advantages that vulcanizers produced into masterbatch granules can be dispersed into masterbatch quickly, so that the problem of dispersion difficulty of powder chemicals is improved; the problem of environmental pollution caused by flying of the powder chemicals during feeding is improved; the vulcanizers are added after an internal mixer discharges the masterbatch and the masterbatch is subjected to supplementary mixing on the open mixing mill for a period of time, cooling water temperature of the open mixing mill is 7 DEG C, and accordingly, a supplementary mixing process is a masterbatch cooling process, and the temperature for adding the vulcanizers can be controlled below 90 DEG C; the whole process after open masterbatch mixing and vulcanizer adding is low in roller temperature and masterbatch temperature, so that the problems of blooming and scorching of the masterbatch are improved.

Description

technical field [0001] The invention relates to a method for mixing rubber with an open mill, in particular to a method for adding final refining medicine with an open mill. Background technique [0002] Initially, the rubber mixing equipment used an open rubber mixer, that is, an open mill. Various additives including fillers, anti-aging agents, plasticizers and vulcanizing agents were added to the open mill. The disadvantage of this method is that powder It is difficult to disperse the material, and the dust is relatively large; with the continuous improvement of equipment, the mixing of rubber materials has entered the stage of closed rubber mixing, that is, adding various auxiliary materials in the internal mixer, mixing in stages, and finally vulcanization The agent is also added into the internal mixer to complete the mixing. Compared with the open rubber mixing, this method has greatly improved the environmental problems and the dispersion of the powder, but it also b...

AI Technical Summary

Problems solved by technology

[0002] Initially, the rubber mixing equipment used an open rubber mixer, that is, an open mill. Various additives including fillers, anti-aging agents, plasticizers and vulcanizing agents were added to the open mill. The disadvantage of this method is that powder It is difficult to disperse the material, and the dust is relatively large; with the continuous improvement of equipment, the rubber mixing has entered the closed rubber mixing stage, that is, adding various auxiliary materials in the internal mixer, mixing in stages, and finally vulcanized The agent is also added into the internal mixer to complete the mixing. Compared with the open rubber mixing, this method has greatly improved the environmental problems and the dispersion of the powder, but it also brings some other problems, such as: due to internal mixing When the speed of the machine is high and the vulcanizing agent is added, the temperature is high, generally controlled above 100°C, which may easily cause frosting or scorching of the rubber material, and eventually lead to the scrapping of the rubber material, resulting in great waste.