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Method for preparing large-density foam glass

A foam glass and high-density technology, which is applied in the field of preparation of high-density foam glass, can solve the problems of unfavorable shock waves and small pore size of foam glass, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2008-05-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pore size of the foam glass prepared by this method is small, which is not good for fully absorbing shock waves

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: at first the density is greater than 3.0g / cm 3 The cullet glass is cleaned, dried and ball milled into a powder below 200 mesh; then 95% of the cullet powder and 5% SiC are put into a ball mill jar according to the mass fraction and ball milled to below 200 mesh; The batch material with a diameter of 200 mesh is added to the heat-resistant steel mold, and finally the mold is moved into the tunnel kiln, roller kiln or pusher kiln and fired according to the following steps; , after holding for 20 minutes; then heating up to 820°C at a heating rate of 20°C / min and then holding for 30 minutes; in the rapid cooling stage, the cooling rate was 25°C / min, cooled to 500°C, and the constant temperature time was 30 minutes; in the annealing stage, the cooling rate was 1 ℃ / min, annealing to below 50℃ to obtain foam glass. The formed foam glass has a uniform structure, an average cell diameter of 1.5 mm, and a density of 1.8 g cm -3 , the flexural strength reaches 1....

Embodiment 2

[0017] Embodiment 2: at first the density is greater than 3.0g / cm 3 The cullet glass is cleaned, dried and ball milled into a powder below 200 mesh; then 97% of the cullet powder and 3% TiN are put into a ball mill pot and ball milled to below 200 mesh according to the mass fraction; Add the batch materials with a diameter of 200 meshes into the heat-resistant steel mold, and finally move the mold into a tunnel kiln, roller kiln or pusher kiln for firing according to the following steps; from room temperature to 400°C at a heating rate of 11°C / min , after holding for 28 minutes; then heating up to 840°C at a heating rate of 18°C / min and then holding for 40 minutes; in the rapid cooling stage, the cooling rate was 20°C / min, cooled to 550°C, and the constant temperature time was 40 minutes; in the annealing stage, the cooling rate was 1.5 ℃ / min, annealing to below 50℃ to obtain foam glass. The formed foam glass has a uniform structure and a density of 1.9 g cm -3 , the average...

Embodiment 3

[0018] Embodiment 3: at first the density is greater than 3.0g / cm 3 The cullet glass is cleaned, dried and ball milled into a powder below 200 mesh; then 96% of the cullet powder and 4% SiC are put into a ball mill jar according to the mass fraction and ball milled to below 200 mesh; Add the batch materials with a diameter of 200 meshes into the heat-resistant steel mold, and finally move the mold into the tunnel kiln, roller kiln or pusher kiln for firing according to the following steps; after heating from room temperature to 400°C at a heating rate of 12°C / min , after holding for 25 minutes; then heating up to 800°C at a heating rate of 15°C / min and then holding for 50 minutes; in the rapid cooling stage, the cooling rate was 18°C / min, cooled to 500°C, and the constant temperature time was 50 minutes; in the annealing stage, the cooling rate was 2 ℃ / min, annealing to below 50℃ to obtain foam glass. The formed foam glass has a uniform structure and a density of 2.1 g cm -3...

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Abstract

A preparation method of high-density foam glass, firstly put cullet powder with a density greater than 3.0g / cm3 and SiC or TiN into a ball mill jar and ball mill to below 200 mesh and add it into a heat-resistant steel mold, and finally move the mold into Firing in a foaming furnace; Foamed glass is obtained after foaming, rapid cooling and annealing. The present invention uses cullets with various densities greater than 3.0g / cm3 as raw materials; SiC or TiN as foaming agent; the foaming agent SiC or TiN helps foam glass to produce crystals in the preparation process, which is beneficial to improve the foam glass brick. mechanical properties. Therefore, the high-density cellular glass can absorb the shock wave energy during the explosion. The foam glass can be combined with cement, steel or other high-strength building materials, used in the interior and exterior façades of the key surfaces of buildings in high-risk areas of terrorist attacks, and has the advantage of a rigid structure. When facing shock waves, the said Bricks can absorb a major part of the explosion energy.

Description

technical field [0001] The invention relates to a method for preparing foam glass, in particular to a method for preparing high-density foam glass which can be used for the interior of building walls and exterior facades. Background technique [0002] In the past few decades, there have been many terrorist attacks on government buildings in some countries in the world. For example, in 1993, terrorists detonated a car bomb in the garage of the World Trade Center in New York City, causing loss of life and significant property damage. In 1995, extremists blew up a truck outside a federal building in Oklahoma City, causing significant loss of life and property. In 1998, the U.S. embassies in Nairobi and Dar es Salaam were also attacked by terrorist car bombs, causing heavy loss of life and property respectively. The 2002 disasters at the World Trade Center in New York City and the Pentagon in Virginia further underscored the urgent need to develop and manufacture building mate...

Claims

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Application Information

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IPC IPC(8): C03C11/00
Inventor 郭宏伟高淑雅王键陈云建刘新年赵彦钊高档妮王少龙
Owner SHAANXI UNIV OF SCI & TECH
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