Nano heat insulating blanket and production method thereof

A production method and nano-scale technology, applied in the direction of heat insulation protection pipelines, heat exchange equipment, heat preservation, etc., can solve the problems of excessive thermal conductivity, unsatisfactory heat insulation performance, large thermal conductivity, etc., and achieve broad application prospects, The effect of low material cost and saving production cost

Active Publication Date: 2010-07-28
刘礼龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing high-temperature heat insulation boards generally use glass wool, rock wool and ceramic fibers (thermal conductivity λ≤0.15W/mK600℃, λ≤0.20W/mK 800℃) as heat insulation materials. The problem is: due to the large thermal conductivity of glass wool, rock wool, ceramic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A nano-scale thermal insulation blanket, its constituent components and weight are (calculated according to the production of 1000Kg thermal insulation blanket):

[0028] 5~200nm silica powder 300Kg

[0029] 5~200nm or 3~10micron silicon carbide powder 100Kg

[0030] 300Kg of zirconium dioxide powder of 5-200 nanometers or 3-10 microns

[0031] 5~100mm aluminum silicate fiber 300Kg,

[0032] A production method of nano-scale thermal insulation blanket, the main steps are as follows:

[0033] Mix the nano-powder except the fiber with the aluminum silicate fiber uniformly according to the weight ratio. Mixing can be done in dry or wet state. After mixing, it can be directly press-molded or pre-shaped by traditional vacuum molding technology, and then calcined after drying. After pre-shrinking, the surface is finished, and finally the product is shaped.

[0034] The obtained nano thermal insulation blanket has a density of 100-300Kg / m 3 , the thermal conductivity is 0...

Embodiment 2

[0037] A nano-scale thermal insulation blanket, its constituent components and weights are respectively (calculated according to the production of 1000Kg thermal insulation blanket):

[0038] 5~200 nanometer silica 200Kg;

[0039] 5~200nm or 3~10micron zirconia powder 350Kg

[0040] 5~200nm or 3~10micron Al2O3 powder 200Kg

[0041] Aluminum silicate fiber 250Kg,

[0042] A production method of nano-scale thermal insulation blanket, the main steps are as follows:

[0043] Mix the nano-powders except aluminum silicate fibers in dry or wet state to form dry or wet mixtures. Add powder mixtures when aluminum silicate fibers are formed, such as spraying or spraying aluminum silicate fibers. When spinning and forming, the dry mixture or the wet mixture is added to the aluminum silicate fiber, and then collected into a cotton embryo, which is needled into a blanket shape, and then pre-fired in a blanket heating furnace to set the shape, and then packaged and stored.

[0044] The ...

Embodiment 3

[0046] A nano-scale thermal insulation blanket, its constituent components and weight are (calculated according to the production of 1000Kg thermal insulation blanket):

[0047] 5~200nm silica powder 300Kg

[0048] 5~200nm or 3~10micron zirconium silicate powder 100Kg

[0049] 5~200nm or 3~10micron calcium oxide 300Kg

[0050] 5~100mm alumina fiber 300Kg,

[0051] The steps of its production method are the same as those in Example 1.

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PUM

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Abstract

The invention relates to a nano heat insulating blanket; the blanket comprises the following components in percentage by weight: 15 to 35 percent of nano-silica powder, 20 to 55 percent of nano or micron powder additive, and the fiber is added to 100 percent; the main steps of the preparation method comprise powder material pre-mixing, mixing of powder material mixture and the fiber, forming, calcining, surface treatment and product finishing. The maximum fiber length adopted by the invention reaches 100mm, the prepared calcine is soft and bendable, has a folding function, facilitates engineering production, has performance that the traditional heat insulating product does not have, is widely applied in all aspects in high-temperature heat insulation, low-temperature heat insulation, cold keeping and other heat insulation and energy-saving fields, and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, in particular to a nanoscale thermal insulation blanket and a production method thereof. Background technique [0002] my country is a big energy-consuming country. The total amount of various energy consumed every year is equivalent to 1.5 billion tons of standard coal, of which about 40% is the energy consumption of industrial equipment. At present, in response to the national requirements for energy conservation and emission reduction, the State Council has formulated a series of laws and regulations related to high-energy-consumption production equipment, in order to reduce the energy consumption of industrial production. One of the main methods to reduce energy consumption is to install isolation The thermal insulation board insulates the production equipment to achieve the purpose of reducing the energy consumption of the equipment. [0003] Existing high-temperature thermal ins...

Claims

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Application Information

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IPC IPC(8): F16L59/02
Inventor 刘礼龙
Owner 刘礼龙
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