Low-temperature microcrystalline foam glass and preparation method thereof

A technology of microcrystalline foam glass and low temperature, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of consumption of foaming agent and energy, reduce foaming temperature, simple preparation method, and long service life Effect

Inactive Publication Date: 2012-11-28
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

So in addition to consuming a lot of foaming agent

Method used

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  • Low-temperature microcrystalline foam glass and preparation method thereof
  • Low-temperature microcrystalline foam glass and preparation method thereof
  • Low-temperature microcrystalline foam glass and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0033] Example 1

[0034] A series of experiments were carried out using liquid sodium water glass with a modulus of M=3.0 and a solid content of 35%, boric acid and metakaolin as raw materials. The four formulas used are A, B, C, and D. Their specific raw material ratios are shown in the following table:

[0035]

[0036] Weigh the raw materials of each formula and proceed as follows: first mix the weighed metakaolin and water glass and stir for 1 hour, then add boric acid and stir until a sol is formed, and age at room temperature for 1 day. Then this mixture was dried at 100°C until the moisture content was 20%. Weigh 250g into the mold, heat it up to 300°C at a rate of 10°C / min and keep it warm for 3h, and finally reduce it to room temperature at a rate of 5°C / min to get a bulk density of 200kg / m 3 Low-temperature crystallized foam glass. The low-temperature microcrystalline foam glass obtained according to formula A, B, C, and D will be subjected to relevant performance tes...

Example Embodiment

[0040] Example 2

[0041] According to the molar ratio: Na 2 O / SiO 2 =0.2, SiO 2 / Al 2 O 3 = 3, B 2 O 3 / SiO 2 =0.1, H 2 O / Na 2 O=22 Weigh each raw material (sodium water glass, kaolin, silica fume and borax). The kaolin is calcined at 800 degrees for three hours to prepare metakaolin, then the weighed metakaolin and silica fume are mixed with water glass and stirred for 1 hour, then borax is added and stirred until a sol is formed, and aged at room temperature for 1 day . Then this mixture was dried at 100°C until the moisture content was 20%. Weigh 250g into the mold, heat it up to 300°C at a rate of 10°C / min and keep it warm for 3h, and finally reduce it to room temperature at a rate of 5°C / min to obtain a bulk density of 200kg / m 3 Low-temperature crystallized foam glass. Its compressive strength is 1.5MPa, thermal conductivity is 0.060W / m·K, weight loss rate is 0.30%, and softening coefficient is 94.8%.

Example Embodiment

[0042] Example 3

[0043] According to the molar ratio: Na 2 O / SiO 2 =0.2, SiO 2 / Al 2 O 3 = 2, B 2 O 3 / SiO 2 =0.1, H 2 O / Na 2 O=22 Weigh each raw material (sodium water glass, fly ash and boric acid). The weighed fly ash is mixed with water glass and stirred for 1 hour, then boric acid is added and stirred until a sol is formed, and aged at room temperature for 1 day. Then this mixture was dried at 100°C until the moisture content was 20%. Weigh 250g into the mold, heat it up to 300°C at a rate of 5°C / min and keep it warm for 3h, and finally reduce it to room temperature at a rate of 5°C / min to get a bulk density of 200kg / m 3 Low-temperature crystallized foam glass. Its compressive strength is 1.6Mpa, thermal conductivity is 0.060W / m·K, weight loss rate is 0.30%, and softening coefficient is 94.8%.

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Abstract

The invention relates to low-temperature microcrystalline foam glass and a preparation method thereof; molar ratios of main components of the microcrystalline foam glass are: 0.1-1.0:1 for the molar ratio of Na2O (K2O) to SiO2, 1.0-20:1 for the molar ratio of SiO2 to Al2O3, and 0-0.2:1 for the molar ratio of B2O3 to SiO2; the preparation method comprises the following steps: (1) mixing and stirring water glass and active aggregates, adding an additive to obtain sol; (2) aging the sol for 1-7 days, drying the aged sol to prepare solid gel with a water content of 10%-50%; (3) triturating the solid gel, adding into a mold, and finally foaming. The microcrystalline foam glass of the invention has low density, high intensity, good heat insulation performance, long service life, and good fireproof performance; and the preparation method of the invention is simple in operation, and reduces the foaming temperature.

Description

technical field [0001] The invention belongs to the field of microcrystalline foam glass and its preparation, and in particular relates to a low-temperature microcrystalline foam glass and a preparation method thereof. Background technique [0002] Gongxiao [2011] No. 65 red-headed document stipulates: 1. Incorporate civil building external insulation materials into the scope of construction project fire protection design review, fire protection acceptance and filing spot check. Before the release of the new standard, the provisions of Article 2 of the "Interim Provisions on Fire Protection of Civil Building External Thermal Insulation System and External Wall Decoration" (Gong Tong Zi [2009] No. 46) shall be strictly implemented. Material. 2. Strengthen the fire supervision and management of external thermal insulation materials for civil buildings. Starting from March 15, 2011, the fire protection design review and fire protection acceptance declaration projects of const...

Claims

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Application Information

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IPC IPC(8): C03C11/00C03B19/08
Inventor 王子生屠浩驰王智宇王小山阮华李陆宝
Owner 宁波荣山新型材料有限公司
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