A fast-setting high-temperature-resistant adhesive and its preparation and application of glue curing

A glue and high-temperature-resistant technology, applied in the field of composite insulators, can solve problems affecting the reliability of electrical equipment, insulator reliability reduction, decomposition, etc., to achieve the effects of supporting the rapid development of UHV, solving strength decline, and solving potential safety hazards

Active Publication Date: 2021-01-26
SINOMA JIANGXI ELECTRICAL PORCELAIN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the adhesive inside the flange is higher than 100°C, the water inside the adhesive that has not yet participated in the hydrolysis vaporizes rapidly, resulting in damage to the internal structure of the adhesive. At the same time, the high temperature causes the decomposition of some unstable hydration products, resulting in the bending strength of the product after injection. The problem of reduction and long-term operation strength attenuation greatly reduces the reliability of insulators during operation and affects the reliability of related electrical equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A fast-setting high-temperature-resistant adhesive, comprising the following raw materials: 800g of aluminate cement, 300g of high-alumina microspheres, 30g of silica fume, 10g of alkali-resistant short glass fiber, 8g of water reducing agent, 1g of defoamer, 1g of citric acid, 150g of water; the aluminate cement is molten aluminate cement, and the content of Al2O3 is 40%; the particle diameter of the high-alumina microspheres is 0.17 mm, and the content of Al2O3 is 92%; The alkali-resistant short glass fiber length is 0.2 mm.

[0025] A preparation method of a fast-setting high-temperature-resistant adhesive, comprising the following steps:

[0026] Step 1, divide the water into two parts, put the weighed alkali-resistant short glass fiber and a part of water into the mixing tank, and disperse evenly for later use;

[0027] Step 2, mix the weighed water reducer with another part of water evenly, and prepare a water reducer solution for use;

[0028] Step 3, put the w...

Embodiment 2

[0033] A fast-setting high-temperature-resistant adhesive, including the following raw materials: 900g of aluminate cement, 350g of high-alumina microspheres, 40g of silica fume, 15g of alkali-resistant short glass fiber, 9g of water reducing agent, 3g of defoamer, and 1.5g of citric acid , 160g of water; the aluminate cement is molten aluminate cement, the content of Al2O3 is 40%; the particle size of the high alumina microspheres is 0.17 mm, and the content of Al2O3 is 92%; The length of the alkali-resistant short glass fiber is 0.2 mm.

[0034] A preparation method of a fast-setting high-temperature-resistant adhesive, comprising the following steps:

[0035] Step 1, divide the water into two parts, put the weighed alkali-resistant short glass fiber and a part of water into the mixing tank, and disperse evenly for later use;

[0036] Step 2, mix the weighed water reducer with another part of water evenly, and prepare a water reducer solution for use;

[0037] Step 3, put ...

Embodiment 3

[0042] A fast-setting high-temperature-resistant adhesive, including the following raw materials: 1000g of aluminate cement, 380g of high-alumina microspheres, 45g of silica fume, 18g of alkali-resistant short glass fiber, 10g of water reducing agent, 3.5g of defoaming agent, and 1.7g of citric acid g, 170g of water; the aluminate cement is molten aluminate cement, the content of Al2O3 is 45%; the particle size of the high alumina microspheres is 0.19 mm, and the content of Al2O3 is 92% ; The length of the alkali-resistant short glass fiber is 0.3 millimeters.

[0043] A preparation method of a fast-setting high-temperature-resistant adhesive, comprising the following steps:

[0044] Step 1, divide the water into two parts, put the weighed alkali-resistant short glass fiber and a part of water into the mixing tank, and disperse evenly for later use;

[0045] Step 2, mix the weighed water reducer with another part of water evenly, and prepare a water reducer solution for use; ...

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Abstract

The invention belongs to the technical field of composite insulators, and in particular relates to a fast-setting high-temperature-resistant adhesive and a preparation method and application thereof. The fast-setting high-temperature adhesive for porcelain core composite insulators is made of the following raw materials: aluminate cement, high-alumina microspheres, silica fume, alkali-resistant short glass fibers, water reducing agent, defoaming agent, citric acid, and water. The present invention produces an adhesive that has a fast solidification speed, can be tested for mechanical properties within 8 hours, is resistant to high temperatures, and is reliable in long-term operation. In order to avoid the safety hazard caused by the decrease in the strength of the post-glue, it provides high-reliability ceramic core composite insulators to support the rapid development of UHV.

Description

technical field [0001] The invention relates to the technical field of composite insulators, in particular to the preparation of a fast-setting high-temperature resistant adhesive and the application of its adhesive curing. Background technique [0002] Porcelain core composite insulator has the dual advantages of porcelain and silicone rubber composite jacket, such as good bending and shock resistance, high rigidity, small deformation, reliable insulation performance, and light weight. It is mainly composed of porcelain core rod or porcelain hollow cylinder The body is used as the inner insulator and the flange is connected together by glue, and then the silicone rubber jacket is formed on the outside of the mandrel by an injection molding machine. At present, domestic and foreign researches on the glue-fitting of porcelain parts and flanges are mostly focused on ordinary Portland cement, sulphoaluminate cement, high-alumina cement, etc. A kind of cement adhesive for insul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/32
CPCC04B7/32
Inventor 尚超峰刘铭阳袁志勇李桂青杨明陈志鹏
Owner SINOMA JIANGXI ELECTRICAL PORCELAIN ELECTRIC CO LTD
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