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A kind of refractory material and preparation method thereof

A technology of refractory materials and inorganic composite materials, which is applied in the field of refractory materials containing silica and its preparation, can solve the problems of complex process and high energy consumption, and achieve the effects of wide source of raw materials, good formability and excellent application potential

Active Publication Date: 2017-11-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a refractory material and a preparation method thereof, so as to solve the problems of complex process and high energy consumption in the refractory material preparation process, and the refractory material produced has good heat resistance and high temperature resistance. Stable under high temperature, free of volatile and easily decomposed components

Method used

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  • A kind of refractory material and preparation method thereof
  • A kind of refractory material and preparation method thereof
  • A kind of refractory material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Pour the silicone resin and kaolin into the beaker according to the mixture, wherein the silicone resin content is 50%-75%, and the kaolin content is 25%-50%. Stir with a glass rod for 10 minutes to mix evenly. After mixing, a viscous and fluid mixture is obtained. The mixture was precured at 100° C. for 5 h, and stirred with a glass rod every 20 minutes during the precuring process. The purpose of pre-curing is to initially evaporate the solvent in the silicone resin, and the purpose of regular stirring is because the kaolin will condense and form a precipitate during the process, making the two mixed unevenly. Then put the mixture into a specific mold for curing and molding. The curing process is 100°C for 24 hours, and then apply pressure for molding. For kaolin content of 25%, 33% and 50%, the pressure is 5MPa, 7MPa and 10MPa respectively. Then keep it at 200°C for 5 hours, and at 300°C for 5 hours. At this stage, the solvent component xylene in the silicone resin w...

Embodiment 2

[0048] The difference between this example and Example 1 is that the mass ratio of kaolin and silicone resin is 1:3, and the temperature during the heating and oxidation process is 1°C / min, 5°C / min and 10°C / min, after 100°C heat preservation The molding pressure is 5MPa. Other steps are identical with embodiment 1. The performance parameters of the prepared refractories are listed in Table 2.

[0049] Table 2 Strength (MPa) and density (g / cm3) of refractories prepared at different heating rates 3 )

[0050]

Embodiment 3

[0052] The difference between this example and Example 1 is that the mass ratio of kaolin and silicone resin is 1:2, and the maximum heat treatment temperature is 800°C, 1300°C and 1500°C. Other steps are identical with embodiment 1. The performance parameters of the prepared refractories are shown in Table 3.

[0053] Table 3 Strength (MPa) and density (g / cm3) of refractories prepared at different maximum processing temperatures 3 )

[0054]

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Abstract

The invention discloses a refractory material and a preparation method thereof, in particular to a silicon dioxide-containing refractory material and a preparation method thereof. The refractory material prepared by the invention uses organosilicon polymer as matrix, inorganic additives as additives, and is prepared under the condition of slowly heating up. The invention can be used to prepare a series of high-temperature-resistant materials such as high-temperature equipment linings, high-temperature containers, and refractory bricks. A series of problems such as easily decomposed components.

Description

technical field [0001] The invention relates to a refractory material and a preparation method thereof, in particular to a silicon dioxide-containing refractory material and a preparation method thereof. Background technique [0002] Refractory materials that can resist high temperature without softening and melting are widely used in various fields of national economy such as metallurgy, petrochemical industry, machinery manufacturing, electric power, military industry, etc., and play an irreplaceable important role in high temperature industrial production. [0003] Frequently used refractory materials are refractory materials that are directly used without molding and firing, and are composed of high-melting point granular and powder materials that are fired by various molding processes or combined with binders. Common basic material components include oxides, such as alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia, etc., and non-oxides, such as silicon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 刘玉付谢晓东
Owner SOUTHEAST UNIV
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