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Foam glass ceramic composite building thermal insulation material and preparation method thereof

A technology of ceramic composite and building insulation, applied in the field of building materials, can solve the problems of difficult industrial transformation, complex firing process and high cost of raw materials, etc., to achieve improved stability and mechanical properties, good respiratory and humidity control performance, mechanical good performance effect

Inactive Publication Date: 2019-03-01
宁波荣山新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the foaming method can prepare ceramic products with high closed porosity, but the raw material requirements are high, and the firing process is complicated and difficult to control; the process of adding pore-forming agents is simple, but the obtained products have poor pore distribution and low porosity; gel injection Molding is a new type of preparation process, but how to prepare a slurry with a suitable viscosity and ensure the in-situ chemical reaction of additives still needs a lot of work to explore, etc.
To sum up, as a class of functional materials with excellent performance and wide application prospects, foam ceramics mainly face problems such as high raw material cost, complicated process, high firing temperature, and high energy consumption in the production and preparation, which make it difficult to realize industrial transformation. So its application is subject to certain restrictions

Method used

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  • Foam glass ceramic composite building thermal insulation material and preparation method thereof
  • Foam glass ceramic composite building thermal insulation material and preparation method thereof
  • Foam glass ceramic composite building thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The test was carried out with liquid sodium silicate water glass with a modulus of 2.4 and a solid content of 48.95%, boric acid, fly ash (particle diameter about 25 μm), and glass fiber (diameter 16 μm, length 6 mm). The specific raw material proportions and main component mass fractions in formulas 1, 2, and 3 are shown in the table below.

[0047]

[0048] (Remarks: Because the amount of glass fiber is too low, the content of each chemical component is low, so it is not reflected in the table, the same below)

[0049] The raw materials of each formula were sheared at a high speed of 4000r / min for 30 minutes, dispersed and mixed evenly, and mixed sols of different viscosities were obtained without gelling; the sols of different formulas were poured into ceramic molds and moved into high-temperature furnaces; According to the heating rate of 3°C / min, it is heated from room temperature to 400°C and held for 0.5h, and then placed directly in the furnace at 500°C, and ...

Embodiment 2

[0061] The test was carried out with liquid sodium silicate water glass with a modulus of 2.4 and a solid content of 48.95%, boric acid, fly ash (particle diameter about 25 μm), and glass fiber (diameter 16 μm, length 6 mm). The specific raw material proportions and main component mass fractions in formulas 1, 2, 3, and 4 are shown in the table below.

[0062]

[0063] The raw materials of each formula were sheared at a high speed of 4000r / min for 30 minutes and dispersed and mixed evenly to obtain mixed sols of different viscosities without gelling; pour the sols of different proportions into ceramic molds and move them into a high-temperature furnace Heating from room temperature to 400°C at a heating rate of 3°C / min and keeping it warm for 0.5h, then placing it directly in a furnace at 500°C and keeping it warm for 1-4h to obtain foam glass ceramics with different hydroxyl content.

[0064] The foamed glass-ceramics obtained according to formula 1-3 are subjected to rele...

Embodiment 3

[0075] The test was carried out with liquid sodium silicate water glass with a modulus of 2.8 and a solid content of 36%, boric acid, fly ash (particle diameter about 25 μm), and glass fiber (diameter 16 μm, length 6 mm). The specific raw material proportions and main component mass fractions in formulas 1, 2, 3, and 4 are shown in the table below.

[0076]

[0077]

[0078] The raw materials of each formula were sheared at a high speed of 4000r / min for 30 minutes and dispersed and mixed evenly to obtain mixed sols of different viscosities without gelling; pour the sols of different proportions into ceramic molds and move them into a high-temperature furnace Heating from room temperature to 400°C at a heating rate of 3°C / min and keeping it warm for 0.5h, then placing it directly in a furnace at 500°C and keeping it warm for 1-4h to obtain foam glass ceramics with different hydroxyl content.

[0079] The foamed glass-ceramics obtained according to formula 1-4 are subjecte...

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Abstract

The invention relates to a foam glass ceramic composite building thermal insulation material and a preparation method thereof. The material comprises a hydrated glass substrate, a crystal phase mineral and inorganic fibers. The preparation technology includes hydrated glass substrate preparation by a wet chemical method, crystal phase mineral and inorganic fiber blending, low-temperature foaming and dehydroxylation heat treatment. The material is excellent in physical and chemical property and fireproof performance, has moderate open pore rate and breathing humidity controlling behaviors and meets grade-A non-combustible standards. Raw materials are wide in variety and low in cost, the preparation process is green and environmentally friendly, and the material is applicable to thermal insulation of building walls.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a foam glass-ceramic composite building thermal insulation material and a preparation method thereof. Background technique [0002] With the increasingly serious problem of energy shortage, China, whose energy share is only a quarter of the world's level, firmly implements the policy of "energy saving and emission reduction". On the one hand, try to reduce the consumption of non-renewable energy and continuously develop new clean energy as an alternative; on the other hand, we are committed to improving the effective utilization of energy. In the country's total energy consumption, building energy consumption accounts for one-third, and the huge consumption caused by cooling and heating has gradually drawn the attention of the society to the issue of building energy conservation. [0003] As the most important part of the building, the quality of the wall envelope insulation ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03C10/06
CPCC03C10/0063C03C11/007
Inventor 王智宇仝凡王小山屠浩驰阮华李陆宝
Owner 宁波荣山新型材料有限公司
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