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Preparation method of expanded vermiculite foam glass insulation material

A foam glass and expanded vermiculite technology, applied in glass manufacturing equipment, glass molding, manufacturing tools and other directions, can solve the problems of narrow source and high production cost, and achieve the effects of improving quality, saving cost and reducing cost

Inactive Publication Date: 2015-12-02
XINJIANG BEIXIN BUILDING MATERIAL IND GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the raw materials for preparing foam glass mainly use glass powder, its source is relatively narrow, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1, by mass fraction 55% glass powder, 14% vermiculite, 2.5% borax, 1.5% trisodium phosphate, 2% boric acid are evenly mixed, add 25% water glass solution, stir to get Batch materials for vermiculite foam glass; put the above batch materials into a heat-resistant steel mold to make a flat green body, put it in an oven and bake it for 2 hours, put the dried green body into a heating furnace to heat, burn The production procedure is as follows:

[0018] In the preheating stage, the temperature rises from room temperature to 400°C at a rate of 5°C / min, and the temperature is kept for 30 minutes;

[0019] In the sintering stage, the heating rate is raised to 850°C at a rate of 10°C / min;

[0020] In the foaming stage, keep warm at a constant temperature of 850°C for 60 minutes;

[0021] Rapid cooling stage, cooling to 550°C at 15°C / min;

[0022] In the annealing stage, the cooling rate is 1°C / min, and the annealing is below 50°C.

[0023] The vermiculite foam glas...

example 2

[0024] Example 2, by mass fraction, 53% glass powder, 20% vermiculite, 3.5% borax, 2% trisodium phosphate, and 1.5% boric acid are uniformly mixed, add 20% water glass solution, and stir to obtain Batch materials for vermiculite foam glass; put the above batch materials into a heat-resistant steel mold to make a flat green body, put it into an oven and bake for 2 hours. Put the dried green body into the heating furnace for heating, and the firing procedure is as follows:

[0025] In the preheating stage, the temperature rises from room temperature to 400°C at a rate of 8°C / min, and keeps warm for 30 minutes;

[0026] In the sintering stage, the heating rate is raised to 900°C at a rate of 15°C / min;

[0027] In the foaming stage, keep warm at a constant temperature of 900°C for 40 minutes;

[0028] Rapid cooling stage, cooling to 600°C at 18°C / min;

[0029] In the annealing stage, the cooling rate is 1°C / min, and the temperature is annealed below 50°C.

[0030] The vermicul...

example 3

[0031] Example 3, by mass fraction 45% glass powder, 30% vermiculite, 4% borax, 3% trisodium phosphate, 1% boric acid are evenly mixed, add 17% water glass solution, stir to get Batch materials for vermiculite foam glass; put the above batch materials into a heat-resistant steel mold to make a flat green body, and put it into an oven to bake for 2 hours. Put the dried green body into the heating furnace for heating, and the firing procedure is as follows:

[0032] In the preheating stage, the temperature rises from room temperature to 400°C at a rate of 10°C / min, and the temperature is kept for 30 minutes;

[0033] In the sintering stage, the heating rate is raised to 950°C at a rate of 20°C / min;

[0034] In the foaming stage, keep warm at a constant temperature of 950°C for 30 minutes;

[0035] Rapid cooling stage, cooling to 650°C at 20°C / min;

[0036] In the annealing stage, the cooling rate is 1°C / min, and the temperature is annealed below 50°C.

[0037] The vermiculit...

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PUM

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Abstract

The invention discloses a preparation method of an expanded vermiculite foam glass insulating material. The preparation method comprises the steps of taking natural mineral vermiculite and waste glass as primary materials; taking water glass as a foaming agent and a binder; doping a proper amount of auxiliary additive; ball-milling, pre-heating, sintering, foaming, cooling and annealing to obtain the expanded vermiculite foam glass insulating material. The foam glass insulating material is good in pore structure, light in weight, low in water absorption, small in heat conductivity coefficient, good in heat preservation effect, heat insulation effect and flame retardant efficiency, wide in material source, easy to obtain the materials, low in cost, energy-saving and environment-friendly, wide in development prospect, and is an ideal building insulating material; and the combustion performance can achieve level A.

Description

technical field [0001] The invention relates to an inorganic thermal insulation material, in particular to an expanded vermiculite foam glass thermal insulation material and a preparation method thereof. Background technique [0002] In recent years, due to frequent fire accidents caused by building exterior wall insulation materials, the use of organic insulation materials has been greatly restricted. Foam glass is a new type of green and environmentally friendly building material with excellent thermal insulation performance. It is an inorganic material and its combustion performance can reach Class A. It has low apparent density, high mechanical strength, low water absorption, low moisture permeability coefficient, small expansion coefficient, good freeze-thaw resistance, low thermal conductivity, good thermal stability, non-combustibility, corrosion resistance, good machinability, etc. advantage. [0003] At present, the raw material for preparing foam glass is mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B19/08C03C6/00C03C6/02
Inventor 李刚宋强姜曙光马玉薇李洁
Owner XINJIANG BEIXIN BUILDING MATERIAL IND GRP CO LTD
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