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Single-side reinforcing mica tape

A technology of single-sided reinforcement and mica tape, which is applied in lamination devices, insulators, electrical components, etc., can solve the problems of poor mica tape impregnation performance and air gaps that cannot be completely eliminated, and achieve high total glue content and curing The effect of high efficiency, good wrapping process, and excellent electrical performance

Active Publication Date: 2014-12-24
永济优耐特绝缘材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a single-sided reinforced mica tape to solve the technical problem that the air gap cannot be completely eliminated after impregnation due to the poor impregnation performance of the current mica tape

Method used

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  • Single-side reinforcing mica tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1 A single-sided reinforced mica tape is manufactured using the following steps: (a) A layer of alkali-free glass cloth is evenly coated on the upper surface of the alkali-free glass cloth after surface treatment with coupling agent or starch infiltration agent Adhesive mixed with accelerator; (b) Mica paper with 4% polyaramid fiber content is covered on the upper surface of the alkali-free glass cloth coated with adhesive and put into an oven for baking; the baking is divided into Four stages; the temperature of the first stage is 80℃, the baking time is 1min, the second stage oven temperature is 110℃, the baking time is 1.4min, the third stage oven temperature is 130℃, the baking time is 1.6min, the fourth The temperature of the section oven is 132℃, and the baking time is 1.6min; (c) After baking, the alkali-free glass cloth with mica paper attached to the surface is rolled to obtain a single-sided reinforced mica tape; the coupling agent is One of the silane ...

Embodiment 2

[0011] Example 2 A single-sided reinforced mica tape is manufactured using the following steps: (a) A layer of alkali-free glass cloth is evenly coated on the upper surface of the alkali-free glass cloth after surface treatment with coupling agent or starch infiltration agent Adhesives mixed with accelerators; (b) Mica paper with 5% polyaramid fiber content is covered on the upper surface of the alkali-free glass cloth coated with adhesives and placed in an oven for baking; the baking is divided into Four stages; the temperature of the first stage is 85℃, the baking time is 2min, the second stage oven temperature is 130℃, the baking time is 1.2min, the third stage oven temperature is 140℃, the baking time is 1.4min, the fourth The temperature of the section oven is 134℃, and the baking time is 1.2min; (c) Roll the alkali-free glass cloth with mica paper attached to the surface after baking to obtain a single-sided reinforced mica tape; the coupling agent is One of the silane co...

Embodiment 3

[0012] Example 3 A single-sided reinforced mica tape is manufactured using the following steps: (a) Coat a layer evenly on the upper surface of the alkali-free glass cloth after surface treatment with a coupling agent or starch infiltration agent Adhesives mixed with accelerators; (b) Mica paper with 3% polyaramid fiber content is covered on the upper surface of the alkali-free glass cloth coated with adhesives and placed in an oven for baking; the baking is divided into Four stages; the temperature of the first stage is 100℃, the baking time is 1.5min, the temperature of the second stage oven is 100℃, the baking time is 1min, the temperature of the third stage oven is 135℃, the baking time is 1.8min, the fourth The temperature of the section oven is 138℃, and the baking time is 1.4min; (c) Roll the alkali-free glass cloth with mica paper attached to the surface after baking to obtain a single-sided reinforced mica tape; the coupling agent is One of the silane coupling agent, a...

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Abstract

The invention relates to electrical insulating materials, in particular to a single-side reinforcing mica tape, which solves the technical problem that after the mica tape is subjected to impregnation, the air gap cannot be radically eliminated due to the poor impregnation performance of the conventional mica tape. A manufacturing method of the single-side reinforcing mica tape comprises the following steps: (a) the upper surface of alkali-free glass cloth is uniformly coated with a layer of adhesive with the accelerating agent after the surface treatment is performed to the alkali-free glass cloth via the coupling agent or the starchiness treating compound; (b) a piece of mica paper with the aramid fiber with the content of 3 percent to 7 percent covers the upper surface of the alkali-free glass cloth and is placed in a baking oven for baking; the baking is divided into four segments; (c) the alkali-free glass cloth with the mica paper covering the surface, which is subjected to baking, is rolled and pressed, so that the single-side reinforcing mica tape is obtained. The single-side reinforcing mica tape has the advantages of higher total gel content, high curing rate, thermal conductivity, thermal resistance, moisture resistance, excellent electrical performance, mechanical strength and excellent technology capability, and improves the operational reliability and service life of a high-voltage motor.

Description

Technical field [0001] The invention relates to the manufacture of electrical insulating materials, in particular to a single-sided reinforced mica tape. Background technique [0002] Mica tape is an irreplaceable main insulation material that must be used for rail transit traction motors, large and medium-sized high-voltage generators, high-voltage motors, metallurgy, mining and oil drilling, mining motors, and wind generator windings. The motor winding is called the heart of the motor by industry insiders. The motor winding is a coil with a certain shape made of insulated copper wires. According to the voltage of the motor, a certain number of layers of mica tape are wound on the coil to form the main insulation. It shows that more than 90% of the damage of the motor winding during operation is caused by the damage of its insulation, so the winding insulation is the most important and most critical part of the heart, which determines the reliability and service life of the moto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/12B32B37/06B32B17/04B32B19/02H01B17/60H01B19/00H01B19/02
Inventor 杨芷萌孙晓辉苗巧燕秦晓冰
Owner 永济优耐特绝缘材料有限责任公司