Polymeric aluminium-silica fireproof heat insulation material and preparation method thereof

A technology of heat insulating material and polymerized silicon aluminum, applied in the field of polymer silicon aluminum refractory heat insulating material and its preparation, can solve the problems of thermal conductivity, limited use temperature, lack of high temperature heat resistant heat insulating material, poor water resistance, etc. Outstanding visual strength, convenient industrial application, and the effect of recycling

Inactive Publication Date: 2008-07-23
中国安华(集团)总公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For a long time, there has been a single variety of heat insulation materials for industrial heat pipe networks and industrial furnaces, and there is a lack of special heat insulation materials with excellent performance in high temperature resistance and corrosion resistance. Mineral wool products widely used at this stage have the advantages of small bulk density and simple processing technology, but due to Using phenolic resin as the binder has limited thermal con

Method used

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  • Polymeric aluminium-silica fireproof heat insulation material and preparation method thereof
  • Polymeric aluminium-silica fireproof heat insulation material and preparation method thereof
  • Polymeric aluminium-silica fireproof heat insulation material and preparation method thereof

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preparation example Construction

[0049] A kind of preparation method of polysilicon-aluminum refractory insulation material, its preparation process is to enrich A 2 o 3 , SiO 2 Industrial waste and its composites, where A 2 o 3 The weight content is 20-50%, SiO 2 The weight content is 30-70%; add alkaline activators such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium silicate, sodium fluorosilicate, calcium hydroxide, etc., and polymerize at a temperature of 60-120°C During the preparation process, floating beads or polyphenylene particles are added to form a composite structure. Its preparation process steps include:

[0050] (1) will be rich in A 2 o 3 , SiO 2 Add alkaline activator to the industrial waste and its compound, mix and stir evenly;

[0051] (2) Gas generation: Add appropriate amount of water and 0.1% to 4% gas generating agent at 25-40°C to form a low-viscosity slurry. The apparent form is Newtonian fluid. Stand still to ionize the water to gen...

Embodiment 1

[0055] 1. Raw materials: the amount of fly ash is 67.5%, the amount of slag is 25.0%, and the amount of kaolin is 7.5%;

[0056] 2. Additional alkaline activator: sodium hydroxide, sodium silicate (liquid): 7.4% and 28.9%;

[0057] 3. Dosage of gas generating agent: 0.2%

[0058] 4. Curing molding temperature: 80°C

[0059] 5. The performance index of the material obtained from the inspection is:

[0060] 1) Bulk density (kg / m 3 )510

[0061] 2) Compressive strength (MPa) 0.96

[0062] 3) Heat resistance (no deformation) (℃) ≥ 800

[0063] 4) Thermal conductivity (kcal / m·h·degree) 0.087.

Embodiment 2

[0065] 1. Raw materials: kaolin 33.9%, fly ash 52.9%, slag 13.2%;

[0066] 2. Alkaline activator: 2.6% sodium hydroxide, 2.6% potassium hydroxide, 21.2% sodium silicate, 0.5% sodium fluorosilicate (additional);

[0067] 3. Gas generating agent: 3%

[0068] 4. Curing molding temperature: 60°C

[0069] 5. Performance indicators:

[0070] 1) Bulk density (kg / m 3 )480

[0071] 2) Compressive strength (MPa) 0.86

[0072] 3) Heat resistance (no deformation) (℃) ≥ 800

[0073] 4) Thermal conductivity (kcal / m·hour·degree) 0.077

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Abstract

The invention discloses an insulating refractory material of polymerized silicon and aluminum and the preparation method, applied in construction and industrial facilities, which is characterized in that: excitation, gas evolution and polymerization are carried out for industrial wastes abundant in aluminum oxide, silicon dioxide, and the complex of the silicon dioxide and aluminum oxide, so as to obtain a three-dimensional aluminum silicate minerals with an internal structure made of a plurality of phases from amorphous to semi-crystalline inside, and an internal form in silica tetrahedron and alumina tetrahedron; a plurality of molecules are linked mainly through ionic or covalent bonds, the mechanical properties of the inorganic concretion are externally presented. The raw materials are composed of silicon and aluminum materials as kaolin, fly ashes, coal gangue, cinder, and red mud; without adding any gelled materials, a high temperature and corrosion resistant porous long-chain structure is formed with an intensity over 0.8MPa and a thermal conductivity coefficient of 0.087 (kilocalorie/ meter x hour x centigrade). The insulating refractory material is applied not only for the heat insulation wallboards in the building but also for the heat insulation and preservation of the industrial thermal pipelines and facilities.

Description

technical field [0001] A polymerized silicon-aluminum refractory and heat-insulating material and a preparation method thereof relate to a polymerized silicon-aluminum refractory and heat-insulated material used for buildings and industrial facilities. Background technique [0002] Thermal insulation of buildings and industrial facilities is an important topic in industrial production and human life. Due to solar heat radiation, the temperature of petrochemical storage tanks and grain storage facilities increases, which increases operating costs. The heating up of ships, vehicles and buildings has resulted in the extensive use of air conditioners, the consumption of a large amount of electric energy and the large use of Freon, posing a threat to the environment and resources. For this reason, people are looking for better insulation materials to improve the thermal insulation performance of buildings and industrial facilities. At present, the existing heat insulation mater...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 华野解永宽付毅高岩吴志浩
Owner 中国安华(集团)总公司
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