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Nano-epoxy glass low-resin powder mica tape and preparation method thereof

A technology of epoxy glass and mica tape, which is applied in the direction of mica, chemical instruments and methods, glass/slag layered products, etc., can solve problems such as unsatisfactory effects, achieve powder drop phenomenon, compact structure, and improve electrical performance Effect

Active Publication Date: 2017-07-11
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the unilateral insulation thickness of the 6kv motor stator coil has been reduced from 1.5mm to 1.3mm, and the unilateral insulation thickness of the 10kv motor stator coil has been reduced from 2.5mm to 2.1mm, but on this basis, the main insulation thickness is further reduced. Only by improving the quantification of mica paper and reducing the content of reinforcing materials, the effect is not ideal

Method used

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  • Nano-epoxy glass low-resin powder mica tape and preparation method thereof
  • Nano-epoxy glass low-resin powder mica tape and preparation method thereof
  • Nano-epoxy glass low-resin powder mica tape and preparation method thereof

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Embodiment 1

[0029] A kind of nano epoxy glass less glue powder mica tape of the present invention, its cross-sectional structure diagram is as follows figure 1 As shown, the nano epoxy glass less glue powder mica tape has a layered structure, from top to bottom, mainly composed of a reinforcing material layer 1, an adhesive layer 2 and a mica paper layer 3; wherein the reinforcing material layer 1 is nano Electrotechnical alkali-free glass cloth treated by particle modification, nano particles are Al with a mass ratio of 20:80 2 O 3 And SiO 2 Mixture, the mass content of nanoparticles in the mica tape is 8%, and the quantitative value of the electrical alkali-free glass cloth is 22g / m 2 ; Mica paper layer 3 is type 507 non-calcined mica paper, and its mica weight is 160g / m 2 The adhesive layer 2 is a mixed epoxy resin layer of E-44, E-20 and F-51, and the mass content of the adhesive layer 2 in the mica tape is 8%; the mica tape has a thickness of 0.15 mm.

[0030] The preparation method of th...

Embodiment 2

[0040] A kind of nano epoxy glass less glue powder mica tape of the present invention, its cross-sectional structure diagram is as follows figure 1 As shown, the nano epoxy glass less glue powder mica tape has a layered structure, from top to bottom, mainly composed of a reinforcing material layer 1, an adhesive layer 2 and a mica paper layer 3; wherein the reinforcing material layer 1 is nano Electrotechnical alkali-free glass cloth treated by particle modification, nano particles are Al with a mass ratio of 30:70 2 O 3 And SiO 2 Mixture, the mass content of nanoparticles in the mica tape is 8%, and the quantitative value of the electrical alkali-free glass cloth is 22g / m 2 ; Mica paper layer 3 is 507 type non-calcined mica paper, and its mica basis weight is 155g / m 2 The adhesive layer 2 is an E-44 and E-20 mixed epoxy resin layer, and the mass content of the adhesive layer 2 in the mica tape is 7.5%; the mica tape has a thickness of 0.14 mm.

[0041] The preparation method of th...

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Abstract

The invention discloses a nano-epoxy glass low-resin powder mica tape. The nano-epoxy glass low-resin powder mica tape has a layered structure and mainly comprises a reinforced material layer, an adhesive layer and a mica paper layer from top to bottom. The reinforced material layer is an electric alkali-free glass cloth modified by nano-particles. A preparation method of the nano-epoxy glass low-resin powder mica tape comprises (1), carrying out surface pretreatment on an electric alkali-free glass cloth, (2) modifying the electric alkali-free glass cloth through nano-particles, (3) preparing an adhesive layer on the nano-particle coating surface of the nano-particle-modified electric alkali-free glass cloth, and (4) laying a mica paper on the adhesive layer to obtain the nano-epoxy glass low-resin powder mica tape. The nano-epoxy glass low-resin powder mica tape has the electrical properties improved by 10% than that of the common mica tape, and can be used in major insulation of a 6kv motor having single-sided insulation thickness of 1.0mm and a 10kv motor having single-sided insulation thickness of 1.8mm.

Description

Technical field [0001] The invention belongs to the field of insulating materials for motors, and in particular relates to a nano-epoxy glass less glue powder mica tape and a preparation method thereof. Background technique [0002] Thinning the main insulation thickness of medium and high voltage motors can increase slot utilization, increase motor capacity, improve main insulation heat dissipation capacity, reduce stator bar temperature difference, reduce overheating damage to insulation materials, and improve motor thermal conductivity. The advantages of reducing the size of the motor, greatly reducing the amount of copper used and reducing mechanical loss, the insulation layer is easily penetrated by the impregnating resin, and the performance of the overall insulation system is improved. Therefore, thinning the main insulation thickness of medium and high voltage motors represents the technical level and development direction of motor insulation systems. [0003] At present, ...

Claims

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Application Information

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IPC IPC(8): B32B17/02B32B17/06B32B19/04B32B7/12B32B27/04B32B27/38B32B33/00H01B3/04
CPCB32B7/12B32B19/06B32B33/00B32B37/12B32B2260/021B32B2260/046B32B2262/101B32B2264/102B32B2307/206B32B2457/04H01B3/04
Inventor 万胜杨宇曾智张步峰周升
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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