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A preservative for alumina-based refractory plastics and its preparation and use method

A plastic and preservative technology, applied in the field of refractory materials, can solve the problems of a large number of microorganisms growing hairs, the principle is not very universal, and achieve the effect of preventing volatilization

Active Publication Date: 2022-05-20
武汉善达化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main defect of the preservatives used at this stage is that the amount added is higher than 1%, and adding a large amount of surfactant will cause a large number of microorganisms to proliferate and a large number of hairs will appear, and a variety of preservatives are basically all The same principle is used to control the reaction of Fe ions with phosphoric acid with acidic materials or surfactants to reduce the consumption of phosphoric acid
Although this method slows down the consumption under certain conditions, there will be two problems. First, the amount of Fe ions is random and may not be exactly in the range. All of them must be added in excess. The second impurity is not only iron ions Other ions will also react, the principle is not very universal

Method used

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  • A preservative for alumina-based refractory plastics and its preparation and use method
  • A preservative for alumina-based refractory plastics and its preparation and use method
  • A preservative for alumina-based refractory plastics and its preparation and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The preservative for alumina-based refractory plastic provided in this example is prepared by the following method:

[0025] The preparation process of component A is as follows: 600 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 2000cp, 50 parts of plasticizer trioctyl phosphate, 100 parts of cross-linking monomer, hydroxyethyl methacrylate acrylic acid Add 2 parts of hydroxypropyl ester copolymerized polyhydroxy oligomer with a molecular weight of 350 to the dynamic mixer and turn on the vacuum to mix evenly. After mixing for 30 minutes, add 0.5 parts of catalyst bismuth laurate and stir for 20 minutes under vacuum, then fill and discharge to obtain Group A point.

[0026] The preparation process of component B is a polyhydroxy compound obtained by mixing 30 parts of water-absorbing polymers, cage-type silsesquioxane and trapezoidal silsesquioxane by mixing carboxyethylene copolymer and polyvinyl alcohol in a ratio of 10:1. Add 300 parts of hig...

Embodiment 2

[0032] The preservative for alumina-based refractory plastic provided in this example is prepared by the following method:

[0033] The preparation process of component A is as follows: 700 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 5000 cp, 50 parts of plasticizer trioctyl phosphate, 150 parts of cross-linking monomer, hydroxyethyl acrylate, methyl Add 2 parts of hydroxypropyl acrylate copolymerized polyhydroxy oligomer with a molecular weight of 700 to the dynamic mixer and turn on the vacuum to mix evenly. After mixing for 30 minutes, add 1.5 parts of catalyst tin acetate and stir for 20 minutes under vacuum, then fill and discharge to obtain Group A point.

[0034] The preparation process of component B is a polyhydroxy compound obtained by mixing 35 parts of water-absorbing polymers, cage-type silsesquioxane and trapezoidal silsesquioxane by mixing carboxyethylene copolymer and polyvinyl alcohol in a ratio of 40:1. Add 500 parts of high polymer...

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Abstract

The invention provides a preservative for alumina-based refractory plastics, which is composed of a liquid A component and a powder B component; the components and weight ratio of the A component are: : 500-700 parts of hydroxyl-terminated polydimethylsiloxane, 100-50 parts of plasticizer, 100-200 parts of cross-linking monomer, 2 parts of polyhydroxy oligomer, 0.5-1.5 parts of catalyst; B component The components and the weight ratio are 30-50 parts of water-absorbing polymers and 300-500 parts of polyhydroxy polymers; the polyhydroxy polymers are cage-type silsesquioxane, trapezoidal silsesquioxane, A mixture of any two of the hydroxyl MQ resins. On the one hand, the preservative can prevent the impurities in the raw materials from reacting with the binder, and on the other hand, it can retain moisture and prevent the volatilization of free water, so it has the advantages of long storage time and good storage effect.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and relates to a preservative, in particular to an alumina-based refractory plastic preservative. Background technique [0002] Refractory plastic is made of refractory aggregate and powder, raw clay and chemical compound binder and admixture. After being mixed and mixed, extruded into brick shape, packaged and stored for a certain period of time, it still has good plasticity and can be used by tamping method. construction. According to the type of refractory aggregate, it can be divided into clay, high alumina, mullite, corundum, chromium, silicon carbide and zirconium-containing refractory plastics. According to the type of binder, it can be divided into refractory plastics combined with aluminum sulfate, phosphoric acid, phosphate, water glass and resin. The plastic has good thermal shock resistance and is easy to construct. It is suitable for various heating furnaces, soaking f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C08L83/04C08L33/14C08L29/04C08L33/02C08K5/521C08F283/12C08F230/08C08F265/04C08F265/02C08F261/04
CPCC04B35/66C08L83/04C08F283/12C08F283/122C08F265/04C08F261/04C08F265/02C08L2205/025C08L2205/035C08L33/14C08L29/04C08L33/02C08K5/521C08F230/085Y02P40/60
Inventor 黄凯陈娜黄異张意
Owner 武汉善达化工有限公司