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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

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Problems solved by technology

So in addition to consuming a lot of foaming agent and energy, there is also the cost of mold damage

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
Effect test

Embodiment 1

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

[0035]

[0036] Weigh the raw materials of each formula, and proceed as follows: firstly mix the weighed metakaolin with 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 to a moisture content of 20%. Weigh 250g into the mold, raise the temperature to 300°C at a rate of 10°C / min and keep it warm for 3 hours, and finally cool down to room temperature at a rate of 5°C / min to obtain a bulk density of 200kg / m 3 Low temperature microcrystalline foam glass. The low-temperature glass-ceramics obtained according to formulas A, B, C, and D were subjected to relevant performance tests, and the r...

Embodiment 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 silicate, kaolin, silica fume and borax). First calcined kaolin at 800 degrees for three hours to obtain metakaolin, then mixed the weighed metakaolin and silica fume with water glass and stirred for 1 hour, then added borax and stirred until a sol was formed, and aged at room temperature for 1 day . Then this mixture was dried at 100°C to a moisture content of 20%. Weigh 250g and put it into the mold, heat up to 300°C at a rate of 10°C / min and keep it warm for 3 hours, and finally cool down to room temperature at a rate of 5°C / min to obtain a bulk density of 200kg / m 3 Low temperature microcrystalline 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%.

Embodiment 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 silicate, fly ash and boric acid). Mix the weighed fly ash with 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 to a moisture content of 20%. Weigh 250g into the mold, raise the temperature to 300°C at a rate of 5°C / min and keep it warm for 3 hours, and finally cool down to room temperature at a rate of 5°C / min to obtain a bulk density of 200kg / m 3 Low temperature microcrystalline 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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