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A kind of modified resin for non-burning slide plate with high volume stability and preparation method thereof

A modified resin and stability technology, applied in the field of modified resin for high volume stability non-burning skateboard and its preparation, can solve the problems of toxicity of organic modifier, limitation of mass production application, complicated operation process, etc. Not easy to agglomerate, improve high temperature volume stability, simple production process

Inactive Publication Date: 2016-09-28
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the organic modifier used has certain toxicity, and the operation process is relatively complicated, which limits its mass production application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A modified resin for a non-burning slide plate with high volume stability and a preparation method thereof.

[0024] First mix the alkali solution with hexagonal boron nitride, ultrasonically disperse for 0.5~1h, and then magnetically stir at 40~50°C for 2~3h to obtain hexagonal boron nitride slurry; then at 50~60°C, the alkali The lignin phenolic resin and the hexagonal boron nitride slurry were stirred for 0.5-1 hour to obtain a modified resin for non-burning slides with high volume stability.

[0025] Wherein: the mass ratio of alkali solution and hexagonal boron nitride is 100: (5~10), and described alkali solution is potassium hydroxide solution, and the pH value of potassium hydroxide solution is 10~11; Alkali lignin phenolic resin and hexagonal boron nitride The mass ratio of the boron nitride slurry is 100:(21~22).

[0026] The method of using the modified resin for non-burning skateboards with high volume stability prepared in this example is: dry-mix the aggr...

Embodiment 2

[0028] A modified resin for a non-burning slide plate with high volume stability and a preparation method thereof. Except following technical parameter, all the other are with embodiment 1.

[0029] The alkaline solution is sodium hydroxide solution; the pH value of the sodium hydroxide solution is 10-11.

[0030] The method of using the modified resin for non-burning slide plate with high volume stability prepared in this example is the same as that in Example 1. The length of the non-burning slide plate product prepared in this example is L1 after being cured at 180°C×24h, and the length of the cured product is L2 after being treated with carbon embedding at 800°C×3h, and then used (L2-L1) The method of / L1×100% calculates the line rate of change: -0.23%~-0.26%.

Embodiment 3

[0032] A modified resin for a non-burning slide plate with high volume stability and a preparation method thereof. Except following technical parameter, all the other are with embodiment 1.

[0033] The alkali solution is an ammonia solution, and the pH value of the ammonia solution is 10-11.

[0034] The method of using the modified resin for non-burning slide plate with high volume stability prepared in this example is the same as that in Example 1. The length of the non-burning slide plate product prepared in this example is L1 after being cured at 180°C×24h, and the length of the cured product is L2 after being treated with carbon embedding at 800°C×3h, and then used (L2-L1) The method of / L1×100% calculates the line rate of change: -0.25%~-0.28%.

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Abstract

The invention relates to a modified resin used for unfired slide plates with higher volume-stability, and a preparation method thereof. According to the preparation method, an aqueous alkali is mixed with hexagonal boron nitride firstly, an obtained mixture is subjected to ultrasonic dispersion for 0.5 to 1h, and then is subjected to magnetic stirring for 2 to 3h at 40 to 50 DEG C so as to obtain a hexagonal boron nitride slurry; alkali lignin phenolic resin and the hexagonal boron nitride slurry are stirred for 0.5 to 1h at 50 to 60 DEG C so as to obtain the modified resin used for unfired slide plates with higher volume-stability, wherein, mass ratio of the aqueous alkali to hexagonal boron nitride ranges from 100:5 to 100:20, and mass ratio of alkali lignin phenolic resin to the hexagonal boron nitride slurry ranges from 100:21 to 100:24. The preparation method is simple, is low in cost, and is beneficial for industrialized production; and the modified resin is capable of improving high temperature stability of unfired slide plates.

Description

technical field [0001] The invention belongs to the technical field of modified phenolic resin for refractory materials. In particular, it relates to a modified resin for a non-burning slide plate with high volume stability and a preparation method thereof. Background technique [0002] The non-burning slide plate is widely used as a flow control element for continuous casting steel due to its excellent mechanical properties and environmentally friendly production. However, the volume of the non-burning slide plate shrinks greatly during the heating process, and there is a risk of safety accidents such as steel leakage during use. The reason is that non-burning skateboards use phenolic resin as a binder. Although phenolic resin has the advantages of high strength, high carbon fixation rate, strong carbon bond at high temperature, good bond with graphite and various oxide aggregates, and less environmental pollution compared with tar pitch. However, phenolic resin cracks an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C09J161/14C09J11/04
Inventor 赵雷王富成方伟何漩陈辉陈欢杜星叶林峰王鑫
Owner WUHAN UNIV OF SCI & TECH