Preparation method of energy-saving and environment-friendly composite foam glass

A composite foam, energy-saving and environment-friendly technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of uneven pore size, secondary pollution, low mechanical strength, etc., and achieve good mechanical properties, small pore size, excellent The effect of thermal insulation performance

Inactive Publication Date: 2019-04-16
李豪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foam glass is a kind of artificial porous material. It has the advantages of non-combustibility, light weight, and good heat insulation performance. The mechanical strength is not high, and the chemical foaming agent used will also produce secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of energy-saving and environmentally-friendly composite foam glass. The components are calculated in parts by weight and include the following steps:

[0024] (1) Take the waste glass, clean it and dry it, crush it through a 200-mesh sieve with a crusher;

[0025] (2) Add modified calcium carbide slag, red mud and mullite fiber, stir and mix evenly, wherein the weight ratio of waste glass powder: modified calcium carbide slag powder: red mud: mullite fiber is 85:10:2: 4;

[0026] (3) Mix and stir polyvinyl alcohol, water and alumina to make a release agent;

[0027] (4) Coat the mold release agent evenly on the surface of the mold and then dry it, load the powder mixed in step (2) evenly into the mold, place it in the muffle furnace, and heat up to 400 at a rate of 5°C / min ℃, keep for 30min;

[0028] (5) Raise the temperature to 800°C at a heating rate of 15°C / min, and keep it for 10 minutes;

[0029] (6) Slowly cool to room temperature with the furnace;

[0...

Embodiment 2

[0033] A preparation method of energy-saving and environmentally-friendly composite foam glass. The components are calculated in parts by weight and include the following steps:

[0034] (1) Take the waste glass, clean it and dry it, crush it through a 200-mesh sieve with a crusher;

[0035] (2) Add modified calcium carbide slag, red mud and mullite fiber, stir and mix evenly, wherein the weight ratio of waste glass powder: modified calcium carbide slag powder: red mud: mullite fiber is 85:12:3: 5;

[0036] (3) Mix and stir polyvinyl alcohol, water and alumina to make a release agent;

[0037] (4) Coat the mold release agent evenly on the surface of the mold and then dry it, load the powder mixed in step (2) evenly into the mold, place it in the muffle furnace, and heat up to 450 at a rate of 5°C / min ℃, keep for 30min;

[0038] (5) Raise the temperature to 820°C at a heating rate of 15°C / min, and keep it for 15 minutes;

[0039] (6) Slowly cool to room temperature with the furnace;

[0...

Embodiment 3

[0043] A preparation method of energy-saving and environmentally-friendly composite foam glass. The components are calculated in parts by weight and include the following steps:

[0044] (1) Take the waste glass, clean it and dry it, crush it through a 200-mesh sieve with a crusher;

[0045] (2) Add modified calcium carbide slag, red mud and mullite fiber, stir and mix evenly, wherein the weight ratio of waste glass powder: modified calcium carbide slag powder: red mud: mullite fiber is 90:15:4: 6;

[0046] (3) Mix and stir polyvinyl alcohol, water and alumina to make a release agent;

[0047] (4) Coat the mold release agent evenly on the surface of the mold and then dry it, load the powder mixed in step (2) evenly into the mold, place it in the muffle furnace, and heat up to 450 at a rate of 5°C / min ℃, keep for 30min;

[0048] (5) Raise the temperature to 830℃ at a heating rate of 15℃ / min, and keep it for 15min;

[0049] (6) Slowly cool to room temperature with the furnace;

[0050] (7...

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Abstract

The invention provides a preparation method of energy-saving and environment-friendly composite foam glass. The preparation method comprises the following steps that waste glass is taken, washed and then dried in the sun, and crushed by a crusher and sieved by a 200-mesh sieve; modified carbide slag, red mud and mullite fiber are added, and uniform stirring and mixing are carried out; polyvinyl alcohol, water and aluminum oxide are mixed to prepare a release agent; the release agent is uniformly applied on the surface of a mold and then is dried, mixed powder is uniformly put into the mold, the mold is placed in a muffle furnace for calcination; the mixed powder is slowly cooled to the room temperature along with the furnace; the mold is transferred into a high-pressure constant-volume vessel, and the constant temperature is maintained for 50-100 min under the supercritical conditions that the temperature is 350-400 DEG C and the pressure is 8-12 MPa; rapid pressure relief is carried out to the normal pressure within 20-100 s, and the energy-saving and environment-friendly composite foam glass is obtained. The energy-saving and environment-friendly composite foam glass prepared bythe method has small and uniform bore diameters, a good mechanical property, and excellent heat preservation and thermal insulation properties.

Description

Technical field [0001] The invention relates to a preparation method of energy-saving and environment-friendly composite foam glass. Background technique [0002] "Qin brick and Han tile" continues to this day is still the main component of my country's wall materials. Relying on clay as a raw material, its production destroys arable land in large quantities and seriously damages the environment. The technology research on energy-saving, soil-saving, waste utilization, and low-polluting multifunctional new wall materials and products has been listed as one of the key support projects by the national building materials industry's cross-century development strategy. Foam glass is a kind of artificially made porous material. It has the advantages of non-combustibility, light weight and good heat insulation performance. However, the foam glass currently available on the market is basically foamed by chemical foaming method, and the pore size is uneven. The mechanical strength is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C11/00C03B19/08C03C6/10
CPCC03B19/08C03C1/002C03C11/007C03C14/002
Inventor 李豪
Owner 李豪
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