Novel production method of mica tape with a few glues by reducing organic solvent dosage

Abstract

The invention relates to a novel production method of a mica tape with a few glues by reducing an organic solvent dosage. The method comprises the following steps that: (1), a reinforcing material is dipped; (2), composition is carried out; (3), baking is carried out; (4), cooling is carried out to manufacture a blank; and (5), slitting and rolling are carried out. According to the method provided in the invention, a gluing method and a glue scraping method are improved as well as a gluing amount is controlled; a baking temperature is controlled in a segment mode and the production speed is enhanced by 1.3 to 1.5 times. When gluing is carried out, a solid content of an adhesive solution reaches 50% to 60% wt. About 120 Kg of organic solvents can be saved to produce one ton of mica tapes with a few glues as well as production costs of the mica tapes are reduced; and pollution of the organic solvents on the environment can be substantially reduced. Moreover, the production speed is improved and the baking temperature is reduced as well as a third of power consumption can be reduced.

Description

technical field [0001] The invention belongs to a new process technology for the manufacture of less-adhesive mica tape, and relates to a practical new manufacture process for less-adhesive mica tape with reduced organic solvent consumption. technical background [0002] Mica tape is the most irreplaceable and critical insulating material for motors, especially large and high-voltage motors. Mica tape is a strip-shaped insulating material formed by bonding reinforcing materials and mica paper with adhesives and cutting. At present, in the mica tape manufacturing process, the adhesive needs to be dissolved into a solution with a large amount of organic solvent. The solid content of the adhesive is usually only 20-30%wt, and an organic solvent of 70-80%wt is required. In the production process of mica tape, a large amount of organic solvent evaporates after baking, and the content of residual organic solvent in mica tape is less than 1% wt. The volatilization of such a lar...

AI Technical Summary

Problems solved by technology

[0003] In view of the need to consume a large amount of organic solvents in the production process of the less-adhesive mica tape, which causes the production cost of the mica tape to be high and seriously pollutes the environment, the purpose of the present invention is to provide a new method for the production of less-adhesive mica tape that reduces the amount of organic solvent used. Improve the method of gluing and the way of squeegeeing to control the amount of gluing, control the baking temperature in sections, and have the characteristics of reducing production costs, energy saving and emission reduction, and reducing environmental pollution