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Method for manufacturing novel low-corrosion radiation resistant heat insulating material

A technology for heat insulation materials and manufacturing methods, applied in the field of manufacturing low-corrosion radiation-resistant heat insulation materials, can solve the problems of lack of IC and F ion content, failure to meet the requirements of heat preservation performance, etc., and achieve light density, small thermal conductivity, and high strength Effect

Inactive Publication Date: 2012-05-09
ZHEJIANG ASKER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many thermal insulation material manufacturers in my country, there is still a lack of mature and complete production lines dedicated to IC and F ion content, which cannot meet the thermal insulation performance requirements.

Method used

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  • Method for manufacturing novel low-corrosion radiation resistant heat insulating material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Ingredients: Weigh 16% of superfine quartz sand, 18% of diatomite active silicon, 12.5% ​​of active calcium hydroxide, 2.5% of reinforcing fiber, and 51% of water, and mix according to percentage.

[0032] 2. Mixing and stirring: Mix and stir ultra-fine quartz sand, diatomite active silicon, active calcium hydroxide, reinforcing fiber and water evenly.

[0033] 3. Gel reaction should be: the reaction temperature should be controlled at 208°C-210°C.

[0034] 4. Compression molding: Press the reacted slurry into a mold, and the pressure is controlled at 8Mpa-10Mpa.

[0035] 5. Hydrothermal reaction, the molded product is sent into the hydrothermal reaction, the temperature is controlled at 150°C-170°C, and the pressure is controlled at 0.7Mpa-0.8Mpa.

[0036] 6. Drying in the drying room: put the product into the drying kiln for drying, the temperature in the low temperature zone is 117°C-120°C, the temperature in the middle temperature zone is 130°C-135°C, the temper...

Embodiment 2

[0039] 1. Weigh 15% of superfine quartz sand; 19% of diatomite active silicon; 12% of active calcium hydroxide; 3% of reinforcing fiber; 51% of water.

[0040] 2. Specific Embodiments The second to seventh steps are the same as those in Embodiment 1.

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Abstract

The invention relates to a method for manufacturing novel low-corrosion radiation resistant heat insulating material which comprises raw materials by weight percent: 15-17% of superfine quartz sand, 15-20% of diatomite activated silica, 10-15% of activated calcium hydroxide, 2-3% of reinforced fiber and 50-55% of water. The manufacturing technique comprises the steps of: blending, mixing and stirring, gel reaction, press forming, hydrothermal reaction, shed drying and finished product packaging. The heat insulating material has the advantages of low heat conductivity, high intensity, low corrosion, radiation resistance, non-toxicity, non-combustible property, ageing-resistance and the like, and can be widely applied to pipe network heat preservation in the fields such as nuclear power, electrical power, metallurgy, chemical engineering, war industry, etc.

Description

1. Technical field [0001] The invention relates to a manufacturing method of a new low-corrosion and radiation-resistant heat-insulation material for nuclear power and thermoelectric heat-insulation materials. Widely used in nuclear power, thermal power, metallurgy, chemical industry, military industry and other equipment pipe network insulation. 2. Background technology: [0002] At present, the insulation materials for austenitic stainless steel thermal pipeline equipment in nuclear power plants rely on imports, which are still blank in China. The insulation materials produced by domestic manufacturers generally have high density and high thermal conductivity. Because the insulation of austenitic stainless steel in nuclear power plants requires special technical requirements and low corrosion , Radiation resistance, the insulation material used must have anti-aging performance under a certain dose of Y-rays and neutron irradiation environment. Although there are many ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B30/02C04B14/06C04B14/08C04B14/38
CPCC04B2111/28C04B2111/26C04B28/18
Inventor 裘茂法郭子龙裘益奇
Owner ZHEJIANG ASKER TECH