Polyimide reaction kettle capable of rotating bidirectionally and dissipating heat efficiently

Abstract

The invention provides a polyimide reaction kettle capable of rotating bidirectionally and dissipating heat efficiently. The polyimide reaction kettle comprises a kettle body and a driving mechanism,a gear ring is embedded in the inner side face of the kettle body, and a radiator is arranged in the kettle body; the radiator comprises a center rod, a plurality of auxiliary rods and a plurality ofrotating discs, the center rod is connected with the driving mechanism and can be driven by the driving mechanism to rotate, the auxiliary rods are circumferentially and annularly distributed outsidethe center rod and rotate along with rotation of the center rod, and the rotating discs are rotationally installed on the auxiliary rods in a one-to-one correspondence mode; and the rotating discs aremade of heat conduction materials, and gear teeth are arranged on the outer contour edge of the rotating discs and meshed with the gear ring. According to the invention, each part of one same rotating disc 5 can be continuously circulated between the central part and the peripheral part in the kettle, so that the uniformity of the temperature in the kettle can be effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of polyimide processing equipment, in particular to a polyimide reaction kettle with bidirectional rotation and high-efficiency heat dissipation. Background technique [0002] Polyimide film is one of the most demanded polyimide products today. Its excellent corona resistance, radiation resistance, dielectric properties and dimensional stability make the demand for high-performance polyimide film materials continue Increase. Due to the large number of imide rings and benzene ring structures in the main chain of polyimide, there is a strong intermolecular force between the molecular chains, which makes the molecular chain structure of polyimide tight, showing the characteristics of insoluble and infusible , has become an obstacle to the mass production and processing of polyimide, and has affected the development of polyimide film products in more application fields. [0003] In order to avoid the problem o...

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Problems solved by technology

However, due to the exothermic reaction between dianhydride and diamine during the polymerization process, the viscosity of the polymerization solution also increases, and because the slurry has thermal insulation and poor thermal conductivity, it is difficult to transfer heat from the central part of the kettle to the surroundings. The slurry around the inside of the kettle can use heat exchange with the wall of the kettle to quickly lower its temperature, thereby making the temperature in the kettle uneven.

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