High-performance flame-retardant mica tape

Abstract

The invention relates to a manufacturing technology of an electrical insulating material, specifically to a manufacturing method for a high-performance flame-retardant fireproof mica tape. For solving the problems of low fireproof passing rate, low flame retardancy and the like of the mica tape, a technical scheme as follows is adopted: (1) preparing coating glue; (2) putting the coating glue into a stirring pool on a scraping apparatus to be fully stirred; (3) adjusting the temperature of a curing box; (4) pulling a common mica tape to the scraping apparatus through a traction apparatus; (5) starting up and operating, and coating glass fabric grids of the common mica tape with the coating glue firstly; (6) compounding a high-density polyethylene film; (7) performing traction and curing on the mica tape; and (8) performing rolling and pressing and taking up. The manufacturing method has the beneficial effects of improving the flame retardancy of the mica tape by taking full advantages of the characteristics of a mica tape reinforcing material.

Description

technical field [0001] The invention relates to a manufacturing technology of electrical insulating materials, in particular to a manufacturing method of a high-performance flame-retardant mica tape. Background technique [0002] Mica tape is a traditional electrical insulating material product, which is often used in fire-resistant wires and cables because of its excellent high temperature resistance and voltage resistance. Due to the influence of mica material, the traditional mica tape has low fire resistance and flame retardancy. In order to improve the fire resistance and flame retardancy of traditional mica tape, manufacturers usually increase the thickness of mica paper, and increase the thickness of glass fiber cloth in order to increase the tension of mica tape. , which increases the industrial cost, increases the wire diameter of the cable, and affects the appearance of the cable. When performing the fire resistance test with the highest conditions in the BS6387-20...

AI Technical Summary

Problems solved by technology

Due to the influence of mica material, the traditional mica tape has low fire resistance and flame retardancy. In order to improve the fire resistance and flame retardancy of traditional mica tape, manufacturers usually increase the thickness of mica paper, and increase the thickness of glass fiber cloth in order to increase the tension of mica tape. , which increases the industrial cost, increases the wire diameter of the cable, and affects the appearance of the cable. When performing the fire resistance test with the highest conditions in the BS6387-2013 and AS / NZS 3013-2005 standards, the fire resistance level is subject to certain restrictions; in addition, The glass fiber cloth of the mica tape is mainly used as a reinforcing material, which increases the thickness of the mica tape to a certain extent, which increases the customer's use cost virtually.