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Energy-saving open-cell foamed glass and preparation method thereof

An open-cell foam, energy-saving technology, applied in the field of sound-absorbing material preparation, can solve the problems of limited production cost, wide application, backward process, technology, equipment, low single-line production capacity of foam glass, etc., and achieves good sound-absorbing effect, beautiful appearance, The effect of reducing production costs

Active Publication Date: 2014-07-30
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Restricted by the technical level, there are very few manufacturers of open-cell foam glass in China at present, the single-line production capacity of foam glass is relatively small, and the process, technology and equipment are relatively backward
The high production cost of foreign technology limits its wide application

Method used

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  • Energy-saving open-cell foamed glass and preparation method thereof
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Examples

Experimental program
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Effect test

Embodiment 1

[0048] First, weigh 93% of the total weight of discarded flat glass, 5% of crushed limestone, 1% of coarse borax, and 1% of zinc white; use a ball mill to crush each component to 140-200 mesh, and make each The components are mixed evenly; then, after putting the mixture into the mold, put the mold into the furnace and fire according to the following procedure: from room temperature to 400°C at a heating rate of 5°C / min, and hold for 25 minutes; then at 10°C / min Raise the heating rate to 820°C and keep it warm for 25 minutes; then cool it down to 600°C at a cooling rate of 20°C / min and keep it warm for 30 minutes; then cool it down to room temperature at a cooling rate of 0.7°C / min to complete the open-cell foam glass product. The parameters of the open-cell foam glass prepared by this method are respectively: bulk density 144kg / m 3 The compressive strength is 0.6MPa; the open porosity is 65%; the sound absorption coefficient measured by the wave tube method is: low frequency ...

Embodiment 2

[0050] First, weigh 93% of the total weight of discarded broken patterned glass, 5% of broken chalk, 1% of coarse borax, and 1% of zinc white; take a ball mill to crush each component to 140-200 mesh, and make Mix the components evenly; then, after putting the mixture into the mold, put the mold into the furnace and fire it according to the following procedure: from room temperature to 400°C at a heating rate of 3°C / min, and hold for 20 minutes; then at 10°C / min Min heating rate is raised to 800°C and kept for 25 minutes; then cooled to 600°C at a cooling rate of 20°C / min and kept for 30 minutes; then cooled to room temperature at a cooling rate of 0.8°C / min to complete the open-cell foam glass product. The parameters of the open-cell foam glass prepared by this method are respectively: bulk density 147kg / m 3 The compressive strength is 0.65MPa; the open porosity is 67%; the sound absorption coefficient measured by the wave tube method is: low frequency (100-125HZ) 0.44, high ...

Embodiment 3

[0052] First, weigh 93% of the total weight of discarded broken bottle glass, 5% of shells, 1% of coarse borax, and 1% of zinc white; use a ball mill to crush each component to 140-200 mesh, and make each The components are mixed evenly; then, after putting the mixture into the mold, put the mold into the furnace and fire according to the following procedure: from room temperature to 400°C at a heating rate of 8°C / min, and hold for 30 minutes; then at 10°C / min Raise the heating rate to 830°C and keep it warm for 25 minutes; then cool it down to 600°C at a cooling rate of 20°C / min and keep it warm for 30 minutes; then cool it down to room temperature at a cooling rate of 0.7°C / min to complete the open-cell foam glass product. The parameters of the open-cell foam glass prepared by this method are respectively: bulk density 149kg / m 3 The compressive strength is 0.64MPa; the open porosity is 64%; the sound absorption coefficients measured by wave tube method are: low frequency (10...

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Abstract

The invention discloses energy-saving open-cell foamed glass and a preparation method thereof. The energy-saving open-cell foamed glass is characterized by taking waste glass, ground calcium carbonate, coarse borax and a small amount of zinc white as raw materials. The preparation method comprises the following steps: smashing and mixing the raw materials by a ball mill to obtain a mixed material and filling the mixed material into a die; and then, firing the die in a furnace according to a preset program to obtain the open-cell foamed glass. The method which applies a lot of solid wastes, namely waste glass and natural stone materials can greatly lower the production cost and effectively save the energy source. The volume density of the open-cell foamed glass prepared by the method disclosed by the invention is 144-150kg / <m3>, the compressive strength is 0.6-0.7MPa, and the opening porosity is 60-70%. The acoustical absorption coefficients measured by a tube detecting method are respectively: 0.37-0.46 at low frequency (100-125HZ) and 0.52-0.61 at high frequency (125-1600HZ). The prepared open-cell foamed glass has the advantages of low density, high strength, attractive appearance, good acoustical absorption effect and the like, and can be used for acoustical absorption and noise reduction of occasions such as substation rooms, swimming pools, metro and various industrial factory buildings.

Description

technical field [0001] The invention relates to a foam glass product, in particular to an energy-saving open-cell foam glass and a preparation method thereof, and belongs to the technical field of sound-absorbing material preparation. Background technique [0002] Noise pollution has become a contemporary worldwide problem, and it is listed as the world's three major pollutions together with water pollution and air pollution. On the one hand, it seriously harms people's auditory system, causing great impact and harm to people's hearing, sleep, physiology, psychology and surrounding environment, making people prone to fatigue and deafness; Aging affects the accuracy and service life of equipment and instruments. With the rapid development of industry and transportation, noise pollution is becoming more and more serious, especially in large and medium-sized cities with dense population and developed economy, especially in the surrounding areas on both sides of expressways and...

Claims

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Application Information

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IPC IPC(8): C03C11/00
Inventor 赵传文陆守香黎昌海
Owner UNIV OF SCI & TECH OF CHINA
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