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Manufacturing process of acid corrosion resistant foam glass

A technology of foam glass and manufacturing process, which is applied in the field of foam glass, can solve the problems that foam glass cannot meet the use requirements, and achieve the effects of excellent heat and shock resistance, excellent acid corrosion resistance, and high mechanical strength

Inactive Publication Date: 2016-04-06
TIANJIN CITY CENTSTAGE TECH INCUBATOR COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cellular glass currently used as a corrosion-resistant insert cannot meet its optimal use requirements

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The invention adopts powder melting method to prepare foam glass, and provides a novel electrodeless structure material with good acid corrosion resistance through formula design. In order to obtain higher acid corrosion resistance and thermal shock resistance, borosilicate glass is selected as the basic glass, and a foaming agent is added to the basic ingredients for preparing borosilicate glass. When the batch is heated to melt and soften, the viscosity When it is lowered, the blowing agent just starts to react and generate gas, and the gas is enclosed in the glass liquid in an elastic state. As the temperature rises, the viscosity of the glass gradually decreases, and the gas expands and the bubbles increase. When the bubbles increase to a certain extent, the temperature drops rapidly, the viscosity of the glass increases sharply, and the bubbles are finally settled.

[0013] The foaming agent is 0.5% to 0.8% of the total mass of the basic batch. The foaming agent ca...

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Abstract

The invention provides a manufacturing process of acid corrosion resistant foam glass. The manufacturing process comprises the following steps: placing a mixture of both basic ingredients of borosilicate glass and a foamer into a ball milling tank, and performing ball-milling to obtain specified fineness, wherein the mass of the foamer is 0.5-0.8% of the total mass of the basic ingredients; placing the ground powder into a grinding tool, then placing the grinding tool into a melting furnace, and firing at the temperature of being lower than 1,000 DEG C. The manufactured foam glass has the favorable characteristics of high corrosion resistance, relatively low thermal expansion coefficient and heat conductivity, and relatively high heat and shock resistance and closed pore rate, and can achieve special purposes.

Description

technical field [0001] The invention relates to foam glass, in particular to acid corrosion-resistant foam glass, which belongs to the field of new materials. Background technique [0002] Foam glass, also known as porous glass, is made of cullet and waste glass as raw materials, mixed with foaming agent and modifier, and fired at 900 ° C. Its thermal insulation characteristics are determined by the physical and chemical properties of inorganic glass. determined by the uniform independent bubbles. This is a high-performance thermal insulation material, which is characterized by: small surface density, high strength, low thermal conductivity, large thermal resistance, good freeze-thaw resistance, good thermal stability, low water absorption, non-combustible, sound absorption , corrosion resistance, low moisture permeability coefficient, good machinability, etc. At present, foam glass has been widely used in petroleum, chemical industry, transportation, national defense, ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/08
CPCC03B19/08C03B2201/20
Inventor 王振华
Owner TIANJIN CITY CENTSTAGE TECH INCUBATOR COMPANY
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