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Glass fiber reinforcement polyester resin motor slot wedge and preparation method thereof

A polyester resin and motor slot wedge technology, applied in the field of motor components, can solve the problems of damage to coil insulation, low mechanical strength, motor burnout, etc., to reduce water absorption, smooth surface, and neatly cut edges Effect

Inactive Publication Date: 2013-03-20
YUEXI COUNTY SHUDA BAMBOO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The iron powder molded magnetic slot wedge has high magnetic permeability but low mechanical strength, which is easy to cause fracture during the manufacturing and operation of the motor
The iron wire pull-out type magnetic slot wedge has high mechanical strength and high magnetic permeability due to the reinforcement of iron wire, but if the magnetic slot wedge is not fixed firmly in the motor slot, it will fall apart during operation. The iron wire may damage the coil insulation, and even cause the coil to short circuit and burn out the motor

Method used

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  • Glass fiber reinforcement polyester resin motor slot wedge and preparation method thereof

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Embodiment

[0028] A glass fiber reinforced polyester resin motor slot wedge, made of the following raw materials in parts by weight: 11% unsaturated polyester resin, 52.5% untwisted glass fiber roving, 18% bamboo powder, 9% modified stone powder, hydrogen oxide Aluminum 2.5%, yellow dextrin 4%, dibenzoyl peroxide 1.5%, internal release agent 352 1.5%.

[0029] Wherein, the modified stone powder is prepared by the following method: dissolving the titanate coupling agent NDZ-130 equivalent to 4% of the mass of the stone powder into liquid paraffin of equal mass, mixing the titanate coupling agent and paraffin Add the mixture into stone powder, stir in a water bath at 75°C for 30 minutes, put it in a drying oven for drying, and then crush and grind it into a 300-mesh powder.

[0030] The preparation method of glass fiber reinforced polyester resin motor slot wedge comprises the following steps:

[0031] (1) Pultrusion

[0032] Fix the coil of untwisted glass fiber roving, adjust auxiliary...

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Abstract

The invention discloses a glass fiber reinforcement polyester resin motor slot wedge which comprises the following raw materials, by weight, 10-15% of unsaturated polyester resin, 50-55% of twistless glass fiber roving, 15-20% of bamboo powder, 5-10% of modified limestone, 2-3% of aluminum hydroxide, 4-6% of yellow dextrin, 1-2% of hardening agent, 0.5-1.5% of internal releasing agent 352. The slot wedge prepared through the method has high mechanical strength and dielectric property, and good heat-resistant property and moisture-resistant property. Moreover, an insulation grade of the slot wedge is F, the resistant high temperature reaches 150 DEG C to 160 DEG C, high split-resistant strength maintained at the high temperature can reach over 900 MPa / 10mm, and operation requirements of motors are completely met.

Description

technical field [0001] The invention relates to a component for a motor, in particular to a glass fiber reinforced polyester resin motor slot wedge and a preparation method thereof. Background technique [0002] As we all know, for large and medium-sized AC high-voltage motors, due to the special requirements of insulation and manufacturing process, the stator winding adopts formed coils, and the stator core is made of open or semi-open slots. Using magnetic slot wedges to close the stator notch of this type of motor can not only fix the coil, but also achieve the effect of energy saving. It has obvious effects on reducing iron consumption, reducing motor temperature rise, and improving motor efficiency, and has been taken as one of the important measures to improve motor performance and energy saving and consumption reduction. [0003] In foreign countries, magnetic slot wedges have been studied and used as early as the beginning of the 20th century, but in China, the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L97/02C08L3/02C08K13/06C08K9/04C08K3/26C08K7/14C08K3/22C08K5/14
Inventor 柳书旺
Owner YUEXI COUNTY SHUDA BAMBOO
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