Preparation method of less-resin aging-resistant mica tape

A mica tape, anti-aging technology, applied in chemical instruments and methods, mica, lamination, etc., can solve the problems of poor thermal conductivity of mica tape, poor aging resistance, large motor heat generation, etc., to achieve thermal conductivity and compatibility Good performance, improved aging resistance, and cost-saving effects

Inactive Publication Date: 2017-09-05
NANTONG ZHONGLING INSULATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: In view of the fact that most of the current mica tape preparation processes are based on ordinary epoxy resin modification or ordinary linear polyester resin, the bonding strength is low and the compatibility is poor, and the mica tapes made Poor thermal conductivity of the tape leads to high heat generation of the motor and poor aging resistance, and the extensive use of adhesives causes serious environmental pollution. A preparation method for a less-adhesive anti-aging mica tape is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First, weigh 200g of polypropylene fiber and put it into a carbonization furnace, heat it up to 200°C in a nitrogen atmosphere, and keep it warm for 3 hours to obtain carbon fiber with high thermal conductivity. Then pour it into a ball mill for 1 hour and pass through a 200-mesh sieve to collect the sieved powder to obtain a mixed filler. Weigh 1 kg of shellac and 1 L of ethanol solution with a mass fraction of 70% and mix it into a fermenter, and then pour it into a fermenter. Add 600g of mixed filler and 10g of yeast extract into the tank, stir evenly, seal the tank mouth, and keep it fermented at 30°C for 7 days. Get 1kg of kiwifruit juice to obtain kiwifruit juice, by weight, take 3 parts of modified filler slurry, 10 parts of kiwifruit juice, 10 parts of maleic anhydride, 40 parts of bisphenol A type epoxy resin and 3 parts of p-phenylene Diphenol was added to the three-necked flask, heated to 85°C and stirred for 1 hour. After the reaction was completed, triethan...

example 2

[0021] First, weigh 250g of polypropylene fiber and put it into a carbonization furnace, heat it up to 250°C under a nitrogen atmosphere, and keep it warm for 4 hours to obtain carbon fiber with high thermal conductivity. Then pour it into a ball mill for 1 hour and pass through a 200-mesh sieve to collect the sieved powder to obtain a mixed filler. Weigh 1 kg of shellac and 1 L of ethanol solution with a mass fraction of 70% and mix it into a fermenter, and then pour it into a fermenter. Add 700g of mixed filler and 15g of yeast extract into the tank, stir evenly, seal the mouth of the tank, and insulate and ferment at 35°C for 8 days. After the fermentation is completed, transfer the fermentation product into a mortar and grind for 4 hours to obtain a modified filler slurry, which is weighed again. Get 1kg kiwi fruit juice, obtain kiwi fruit juice, by weight, take 4 parts of modified filler pulp, 11 parts of kiwi fruit juice, 13 parts of maleic anhydride, 45 parts of bispheno...

example 3

[0024] First, weigh 300g of polypropylene fiber and put it into a carbonization furnace, heat it up to 300°C under a nitrogen atmosphere, and keep it warm for 5 hours to obtain carbon fiber with high thermal conductivity. and pour it into a ball mill for 2 hours and pass through a 200-mesh sieve to collect the sieved powder to obtain a mixed filler. Weigh 2kg of shellac and 2L of ethanol solution with a mass fraction of 70% and mix them into a fermenter, and then add them to the fermentation tank. Add 800g of mixed filler and 20g of yeast extract into the tank, stir evenly, seal the tank mouth, and insulate and ferment at 40°C for 9 days. After the fermentation is completed, transfer the fermentation product into a mortar and grind for 5 hours to obtain a modified filler slurry, which is weighed again. Get 2kg kiwi fruit juice, obtain kiwi fruit juice, by weight, take 5 parts of modified filler slurry, 12 parts of kiwi fruit juice, 15 parts of maleic anhydride, 50 parts of bisp...

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Abstract

The invention discloses a preparation method of a less-resin aging-resistant mica tape, and belongs to the technical field of fire-resistant insulating material preparation. The heat conduction of the mica tape is enhanced by the high heat conduction of carbon fibers and silicon nitride, the aging resistance of the mica tape is enhanced by using the ultraviolet shielding function of montmorillonoid, and natural resin shellac is utilized to modify the filler surface under the effect of microorganisms so that the compatibility between the filler and the base resin can be enhanced, the phenomenon of filler sinking can be avoided, the adhesion of the binding agent is increased through the combined effect with the epoxy resin, the chemical bonding force between the bonding agent and the mica paper base is increased by the abundant active groups in the kiwi-fruit juice, the adhesion is further enhanced, the use amount of the adhesive can be reduced by enhancement of the adhesion and thus the cost can be saved and pollution to the environment can be avoided.

Description

technical field [0001] The invention discloses a preparation method of a rubber-less aging-resistant mica tape, which belongs to the technical field of preparation of refractory insulating materials. Background technique [0002] In recent years, with the development of my country's electric power industry towards high-voltage, large-capacity and long-distance transmission, higher and higher requirements have been put forward for the quality and reliability of electrical insulating materials. Research and development of various insulating materials with excellent performance It is a general trend in the development of electrical insulating materials. [0003] Mica tape is the most irreplaceable and critical insulating material for motors, especially large-scale, high-voltage motors, wind turbines, and large-scale variable-frequency speed-regulating motors. During the operation of the motor, a large amount of heat will be generated, and high temperature will cause the electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01B17/60H01B3/04B32B19/06B32B17/02B32B17/06B32B7/12B32B37/12B32B37/06B32B37/10C09J163/10C09J11/04
CPCB32B5/02B32B7/12B32B17/065B32B19/06B32B37/06B32B37/10B32B37/12B32B2262/101B32B2307/206B32B2307/54B32B2307/558C08K3/34C08K3/346C08K7/06C08K9/08C08K13/06C09J11/04C09J163/10H01B3/04H01B17/60H01B19/00
Inventor 汪逸凡林晨孙冬
Owner NANTONG ZHONGLING INSULATION MATERIALS
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