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Preparation method of novel thermal insulation material and coating thereof

A technology for thermal insulation and coating, applied in reflection/signal coatings, coatings, etc., can solve the problems of urgent need to improve thermal insulation effect and limited thermal insulation effect, and achieve the effects of short construction period, cost saving and simple construction process

Active Publication Date: 2013-10-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing thermal insulation coatings mainly use ordinary hollow microspheres, titanium dioxide and other materials. Most of their particle sizes are about 15 μm, and some are even higher, and they only rely on blocking heat transfer to achieve heat insulation effects. Therefore, The heat insulation effect is limited, and the heat insulation effect needs to be improved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Weigh 1g of nano-polystyrene template, add it to a four-necked flask, add 30mL of ethanol, 40mL of deionized water, 2mL of ammonia water, 0.1g of cetyltrimethylammonium bromide or cetyltrimethylammonium chloride , 0.1g surfactant polyethylene glycol 2000 or sodium dodecylbenzene sulfonate, 2mL silicon source, stirred and reacted at 40°C for 3h, took out the product, centrifuged, washed and dried, and put it under the condition of 500°C Calcination, that is, to obtain hollow nano-silica particles with complete particles and good shape.

[0010] Add 1g of hollow nano-silica particles into a four-neck flask, add 300mL of water, stir evenly, heat to 30°C, slowly add 0.1mol / L titanium source 100mL dropwise, stir for 4 hours, stop the reaction, let stand for 2 hours, and then filter with suction , dried and calcined at high temperature to obtain hollow nano-silica particles modified with titanium dioxide.

[0011] The prepared hollow nano-silica particles modified with titan...

Embodiment 2

[0018] Weigh 1.5g of nano-polystyrene template, add it to a four-necked flask, add 30mL of ethanol, 30mL of deionized water, 2mL of ammonia water, 0.3g of cetyltrimethylammonium bromide or cetyltrimethylchloride Ammonium, 0.2g surfactant polyethylene glycol 2000 or sodium dodecylbenzene sulfonate, 1mL silicon source, stirred and reacted at 60°C for 4h, took out the product, centrifuged, washed and dried at 600°C calcining at lower temperature, the hollow nano-silica particles with complete particles and good shape can be obtained.

[0019] Add 2g of hollow nano-silica particles into a four-neck flask, add 300mL of water, stir evenly, heat to 30°C, slowly add 200mL of 0.1mol / L titanium source dropwise, stir for 4 hours, then stop the reaction, let stand for 2 hours, and then filter with suction , dried and calcined at high temperature to obtain hollow nano-silica particles modified with titanium dioxide.

[0020] The prepared hollow nano-silica particles modified with titanium...

specific Embodiment approach

[0042] Example 1:

[0043] Weigh 1g of nano-polystyrene template, add it to a four-necked flask, add 30mL of ethanol, 40mL of deionized water, 2mL of ammonia water, 0.1g of cetyltrimethylammonium bromide or cetyltrimethylammonium chloride , 0.1g surfactant polyethylene glycol 2000 or sodium dodecylbenzene sulfonate, 2mL silicon source, stirred and reacted at 40°C for 3h, took out the product, centrifuged, washed and dried, and put it under the condition of 500°C Calcination, that is, to obtain hollow nano-silica particles with complete particles and good shape.

[0044] Add 1g of hollow nano-silica particles into a four-neck flask, add 300mL of water, stir evenly, heat to 30°C, slowly add 0.1mol / L titanium source 100mL dropwise, stir for 4 hours, stop the reaction, let stand for 2 hours, and then filter with suction , dried and calcined at high temperature to obtain hollow nano-silica particles modified with titanium dioxide.

[0045] The prepared hollow nano-silica particle...

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PUM

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Abstract

The invention provides preparation of a novel thermal insulation material and a coating thereof, and belongs to the technical field of energy-saving coatings. The preparation method comprises the following steps of: with a nanometer substance as a template, preparing hollow silica nanoparticles; wrapping a layer of titanium dioxide capable of reflecting ultraviolet on the surfaces of the hollow silica nanoparticles so as to obtain hollow silica nanoparticles modified by titanium dioxide; and then preparing the coating from the hollow silica nanoparticles modified by titanium dioxide and film forming matter, thus obtaining the thermal insulation material. The thermal insulation performance of the thermal insulation material is greatly improved because of the special nano-structure of the hollow silica nanoparticles and the function of the titanium dioxide on the surface on reflecting the ultraviolet.

Description

technical field [0001] The invention relates to the preparation of a novel thermal insulation material and coating thereof, which has high thermal insulation performance and belongs to the technical field of energy-saving coatings. Background technique [0002] Saving energy, reducing consumption, and improving economic benefits are one of the basic goals of scientific research and technology development, and coating technology is no exception. After the 1970s, the world's climate became warmer, and the earth's energy was increasingly exhausted. Among all energy consumption components, building energy consumption exceeded one-third, accounting for the largest proportion; in addition, in industrial production, thermal insulation measures are required There are also many places to achieve energy saving and consumption reduction. Therefore, it is of great practical significance to develop thermal insulation and energy-saving coatings. Thermal insulation coatings combine the du...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D5/33
Inventor 姚伯龙李祥褚路轩关晓
Owner JIANGNAN UNIV
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