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Insulating impregnating resin for drawing groove wedge and its curing method

An insulating impregnation and resin technology, which is applied in the field of insulating impregnating resin and curing for the wedge of drawing and pulling, can solve the problems of inability to meet the needs of electrical equipment, and achieve the effects of low use cost, good insulation performance and simple preparation method.

Active Publication Date: 2013-06-12
浙江博菲电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing slot wedge products are far from meeting the needs of electrical equipment

Method used

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  • Insulating impregnating resin for drawing groove wedge and its curing method
  • Insulating impregnating resin for drawing groove wedge and its curing method
  • Insulating impregnating resin for drawing groove wedge and its curing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the formula of the insulating impregnating resin for drawing slot wedges of this embodiment:

[0034] Benzoxazine imine resin 100g, F51 novolac epoxy resin 45g, initiator benzoyl peroxide (BPO) 0.8g, reactive diluent is styrene 10g, curing agent is 594 epoxy curing agent 0.8g, accelerator It is 0.5g of aluminum acetylacetonate.

[0035] After the above-mentioned components are uniformly mixed according to the formula, the insulating resin for high-temperature-resistant lead-out slot wedges is obtained. When the insulating resin is used, the mold is heated to 180° C. in the curing step, and the resin stays in the mold for 30 seconds. After the curing step at high temperature, the insulating material is formed.

Embodiment 2

[0037] According to the formula of the insulating impregnating resin for drawing slot wedges of this embodiment:

[0038] Benzoxazine imine resin 100g, F44 novolac epoxy resin 45g, initiator benzoyl peroxide (BPO) 1.0g, reactive diluent are diethylene glycol diacrylate phthalate 10g, curing agent is formazan 45 g of tetrahydrophthalic anhydride, and 0.5 g of aluminum acetylacetonate as the accelerator.

[0039] After the above-mentioned components are uniformly mixed according to the formula, the insulating resin for high-temperature-resistant lead-out slot wedges is obtained. When the insulating resin is used, the mold is heated to 170° C. in the curing step, and the resin stays in the mold for 30 seconds. After the curing step at high temperature, the insulating material is formed.

Embodiment 3

[0041] According to the formula of the insulating impregnating resin for drawing slot wedges of this embodiment:

[0042] Benzoxazine imine resin 100g, F44 novolac epoxy resin 30g, initiator benzoyl peroxide (BPO) 0.6g, reactive diluent is pentaerythritol triacrylate (APE) 15g, curing agent is phenylimidazole 8g, The accelerator is 0.2 g of cobalt acetylacetonate.

[0043] After the above-mentioned components are uniformly mixed according to the formula, the insulating resin for high-temperature-resistant lead-out slot wedges is obtained. When the insulating resin is used, the mold is heated to 180° C. in the curing step, and the resin stays in the mold for 45 seconds. After the curing step at high temperature, the insulating material is formed.

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Abstract

The invention discloses an insulating impregnating resin for a drawing groove wedge. The insulating impregnating resin comprises the following components by weight: 100 parts of benzoxazine-imide resin, 30-45 parts of epoxy resin, 5-15 parts of an active diluent, 0.5-1 part of an initiator, 0.8-45 parts of a curing agent, and 0.1-1 part of a curing accelerator. The insulating impregnating resin for a drawing groove wedge provided in the invention has a high heat-resistant grade, good insulation property. And all mechanical strength is high, especially the thermal mechanical strength. The resin also has certain flame retardant effect and excellent comprehensive properties, thus being expected to be widely applied in drawing groove wedge products and other fields. And the insulating impregnating resin for a drawing groove wedge involved in the invention can be used through simple blending. The preparation method is simple, and the use cost is low.

Description

technical field [0001] The invention relates to the field of insulating varnish, in particular to an insulating impregnating resin for pulling out slot wedges and a curing method. Background technique [0002] The slot wedge is an indispensable part in the engine. For example, the patent document with the application number CN200720117687.2 discloses a slot wedge structure made of magnetic materials, which consists of a slot wedge and a slot bottom wedge. The top of the slot wedge is placed in the slot, and the width of the top of the slot wedge is smaller than the width of the slot, so that a gap is formed between the top of the slot wedge and the slot. On the surface, the lower end of the slot wedge is stuck in the slot and connected to the slot wall. The bottom of the slot wedge is convex. The bottom of the bottom wedge is close to the bottom of the groove, and the upper part of the bottom wedge of the groove is flat or convex, and pressed against the loose coil at the b...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F283/10C08L63/00C08L79/08C08G59/42C08G59/50C08G59/58
Inventor 许向阳陆云峰
Owner 浙江博菲电气股份有限公司
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