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A kind of ultraviolet curing repair glue and preparation method thereof

A repair glue and ultraviolet light technology, applied in the direction of adhesives, epoxy resin glue, adhesive types, etc., can solve the problems of short service cycle, long curing time, high price, etc., to achieve lasting repair effect, save manpower, convenient The effect of on-site operation

Active Publication Date: 2018-02-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign products are expensive, and the use effect is not satisfactory
[0004] The main problems existing in the prior art are: long curing time, low bond strength, poor oil resistance, serious aging, short service life, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the UV-curable repair glue includes the steps of preparing component A, the step of preparing component B, and the step of mixing component A and component B. The specific steps of the preparation method of the repair glue are as follows:

[0027] (1) Preparation of epoxy acrylic resin

[0028] Weigh epoxy resin and acrylic acid in proportion, wherein: the molar ratio of epoxy group to carboxyl group is 1-5:1, mix epoxy resin with a small amount of hydroquinone, the content of which is 0.1wt% -0.3wt%, heat to 80-90°C, then slowly drop the mixture of acrylic acid and benzyltriethylammonium bromide, wherein the content of benzyltriethylammonium bromide is 0.6wt%-1.5wt%, to control the reaction The temperature is below 100°C, after the dropwise addition, the temperature is raised to 100-105°C, and the reaction takes two hours. After the reaction, the temperature is lowered to below 80° C., and the thinner tripropylene glycol diacrylate (TPGDA) is...

Embodiment 1

[0040] (1) take by weighing 25 grams of epoxy resin and 9 grams of acrylic acid, the addition of hydroquinone is 0.2wt%, the addition of benzyltriethylammonium bromide is 0.9wt%, epoxy resin and p-phenylene Mix the diphenols, heat to 80-90°C, then slowly drop the mixture of acrylic acid and benzyltriethylammonium bromide, control the reaction temperature below 100°C, after the addition, raise the temperature to 100-105°C, and react two times Hour. After the reaction, the temperature was lowered to below 80° C., and 9 grams of dipropylene glycol diacrylate (TPGDA) was mixed in.

[0041] (2) Take by weighing 1.2 grams of fumed silica, mix it in 20 milliliters of absolute ethanol, and make the white carbon black evenly dispersed in the ethanol by means of ultrasonic waves, then pour it into the reaction solution obtained in the step (1), Heat to reflux for 10-20 minutes, then distill under reduced pressure to remove ethanol, and cool down to 60°C.

[0042] (3) Mixed with UV cur...

Embodiment 2

[0051] (1) take by weighing 25 grams of epoxy resin and 5.3 grams of acrylic acid, the addition of hydroquinone is 0.2wt%, the addition of benzyltriethylammonium bromide is 0.9wt%, epoxy resin and p-phenylene Mix the diphenols, heat to 80-90°C, then slowly drop the mixture of acrylic acid and benzyltriethylammonium bromide, control the reaction temperature below 100°C, after the addition, raise the temperature to 100-105°C, and react two times Hour. After the reaction, the temperature was lowered to below 80° C., and 6 grams of dipropylene glycol diacrylate (TPGDA) was mixed in.

[0052] (2) Weigh 1 gram of fumed silica, mix it into 20 milliliters of absolute ethanol, and use ultrasonic waves to uniformly disperse the fumed silica in ethanol, and then pour it into the reaction solution obtained in step (1) , heated to reflux for 10-20 minutes, and then distilled under reduced pressure to remove ethanol, and lower the temperature to 60°C.

[0053] (3) Mixed with UV curing epo...

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PUM

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Abstract

The invention provides an ultraviolet light curing repair glue and a preparation method thereof, belonging to the technical field of ultraviolet light fast curing repair glue. It mainly solves the problems of long curing time, low bonding strength, poor oil resistance, or serious aging, and short service life. Epoxy-modified acrylic resin, UV-curable epoxy resin and room-temperature-curable silicone rubber, as well as methyl silicone oil, zinc carbonate powder and fumed silica, component B includes UV photoinitiator and curing agent. The preparation method includes the step of preparing component A, the step of preparing component B, and the step of mixing component A and component B. The invention can be cured within 90 seconds without heating, and is convenient for on-site operation, and can quickly and effectively repair the leaking part without stopping the machine, releasing pressure, or releasing oil / gas, and effectively saving manpower, material resources, and financial resources put in.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet light fast-curing repair glue, and in particular relates to ultraviolet light-curable repair glue and a preparation method thereof. Background technique [0002] For a long time, the problem of oil / gas leakage in transformers has been perplexing the normal operation of transformers and the safety of power supply in power systems, which has attracted widespread attention of technical personnel in related fields at home and abroad. There are a large number of reports on the causes and treatment measures of transformer leakage points in relevant domestic publications. Yang Zhiqiang and others proposed to use modified acrylate adhesive to deal with the leakage point. Yan Tao proposed to use "302" sealant or "Kesaixin" metal repair agent to plug leaks, but "302" sealant is fragile and easy to debond or break after repair, while "Kesaixin" metal repair agent cannot bring Oil operation, and long cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/10C09J163/00C09J183/04C09J11/04
Inventor 杨晓军高建国王晶晶高博
Owner STATE GRID CORP OF CHINA
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