Polymeric reactor for polyphenylene sulfide

Abstract

The invention relates to the technical field of chemical mechanical stirring reactor manufacturing and specifically relates to a polymeric reactor for polyphenylene sulfide. The polymeric reactor comprises a kettle body, a stirring motor, a stirring shaft, a stirrer and a magnetic coupling sensor, wherein the stirring motor is arranged above the kettle body; an output shaft of the stirring motor is connected with a magnetic coupling driver inserted into the kettle body; the upper end of the magnetic coupling driver is connected with the stirring motor; the lower end of the magnetic coupling driver is connected with the stirring shaft through a coupler; the stirrer is arranged on the stirring shaft; the polymeric reactor is characterized in that an external quick temperature control mechanism, an internal auxiliary temperature control mechanism and an anti-adhesion stirring mechanism are arranged on the kettle body. The polymeric reactor has the advantages of simple structure, convenience in cleaning, stable and easy controllable reaction temperature, benefit in continuous operation high efficiency, high yield, and the like.

Description

technical field [0001] The invention relates to the technical field of manufacturing chemical mechanical stirring reactors, in particular to a polyphenylene sulfide polymerization reactor with simple structure, convenient cleaning, stable and easy-to-control reaction temperature, favorable continuous operation, high efficiency and high yield. Background technique [0002] As we all know, polyphenylene sulfide (PPS for short) is a kind of high-performance thermoplastic special engineering plastics. The average annual growth rate of 15% to 20% has prompted manufacturers to continuously expand their production capacity. The main application fields of domestic PPS are in the military industry and aerospace industry. In recent years, it is accelerating its development to the fields of automobiles and spare parts and industrial electronic instruments. demand. Due to the huge gap in current production capacity and output, there is still a considerable consumption from imports. Ac...

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Problems solved by technology

[0003] At present, my country also has a new type of stirring reactor suitable for continuous high-capacity mixed processing tasks under high-temperature and pressurized conditions, based on the technical conditions for the synthesis of PPS by the sodium sulfide method. However, two points were found in the process Key problems need to be overcome: First, the polycondensation reaction is highly exothermic, and it is relatively difficult to control. However, if the temperature is too high, part of the solvent will decompose, and the small molecule polymer formed at the beginning will be partially degraded, the color will turn black, the material will deteriorate, and the temperature will be too low. , the reaction is not complete, more oligomers are obtained, and the quality is not up to standard; second, the viscosity of PPS crystallization process can reach 5Pa s, such high-viscosity materials are easy to stick to the wall of the kettle and the surface of the internal parts, resulting in uneven temperature, Unequal Response Adverse Effects

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