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Paraffin coated SiO2 color phase change microcapsule as well as preparation method and application thereof

A phase-change microcapsule and microcapsule technology, applied in microcapsule preparations, microsphere preparation, chemical instruments and methods, etc., can solve the problems of dye coating peeling, poor compatibility, etc. The effect of excellent UV-absorbing ability

Active Publication Date: 2021-09-24
XIAO HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology improves on how well an organosilicate material (silicon dioxide or ceramics) used for coatings has been treated with UV light by increasing its ability to absorb it effectively while also making better use of other components within the materials' structure. By doing this, thermal conduction becomes faster when heating up during manufacturing processes compared to traditional methods like plasma spray techniques where only one component remains visible after curing. Additionally, there are no easy ways to remove any unwanted parts from these particles without affecting their effectiveness at transmitting infrared rays through them. Overall, this new method provides greater efficiency and consistency across different types of samples being tested.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the durability and functionality of painted surfaces made from mixtures containing poly(α)-phase transition), specifically paraffins, while maintaining flexibility and stability during cold climate impacts. Previous attempts at creation of microparticles were limited because they did not match all desired colors well together without sacrificing visual appearance quality. Therefore, an improved approach called encasing microdrops within crystal particles instead of solidified phases becomes necessary.

Method used

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  • Paraffin coated SiO2 color phase change microcapsule as well as preparation method and application thereof
  • Paraffin coated SiO2 color phase change microcapsule as well as preparation method and application thereof
  • Paraffin coated SiO2 color phase change microcapsule as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A paraffin@SiO 2 A preparation method for colored phase-change microcapsules, the preparation method comprising:

[0079] 1) Add 7.5g of paraffin and 7.5g of TEOS (tetraethyl orthosilicate) into a three-necked flask and mix them, and mechanically stir at 50°C for 30 minutes to obtain a paraffin / TEOS mixed dispersed phase (dispersed phase A);

[0080] 2) Mix 100mL formamide solution and 1.3g emulsifier CTAB (cetyltrimethylammonium bromide) solution, and mechanically stir for 40min at 60°C to prepare emulsifier dispersed phase (dispersed phase B);

[0081] 3) Add the paraffin / TEOS mixed dispersion phase to the emulsifier dispersion phase, and mechanically mix and react for 4 hours at 50°C to obtain a uniformly dispersed and uniform emulsion;

[0082] 4) Prepare a 1.8mol / L hydrochloric acid solution, add it into a three-necked flask at a rate of 2 drops / s until the precipitate no longer increases significantly, and react for 4 hours to obtain a white precipitate;

[0083...

Embodiment 2

[0089] A paraffin@SiO 2 A preparation method for colored phase-change microcapsules, the preparation method comprising:

[0090] 1) Add 7.5g of paraffin and 7.5g of TEOS (tetraethyl orthosilicate) into a three-necked flask and mix them, and mechanically stir at 50°C for 30 minutes to obtain a paraffin / TEOS mixed dispersed phase (dispersed phase A);

[0091] 2) Mix 100mL formamide solution and 1.3g emulsifier CTAB (cetyltrimethylammonium bromide) solution, and mechanically stir for 40min at 60°C to prepare emulsifier dispersed phase (dispersed phase B);

[0092] 3) Add the paraffin / TEOS mixed dispersion phase to the emulsifier dispersion phase, and mechanically mix and react for 4 hours at 50°C to obtain a uniformly dispersed and uniform emulsion;

[0093] 4) Prepare a 1.8mol / L hydrochloric acid solution, add it into a three-necked flask at a rate of 2 drops / s until the precipitate no longer increases significantly, react for 4 hours, and obtain a white precipitate;

[0094] ...

Embodiment 3

[0100] A paraffin@SiO 2 A preparation method for colored phase-change microcapsules, the preparation method comprising:

[0101] 1) Add 7.5g of paraffin and 7.5g of TEOS (tetraethyl orthosilicate) into a three-necked flask and mix them, and mechanically stir at 50°C for 30 minutes to obtain a paraffin / TEOS mixed dispersed phase (dispersed phase A);

[0102] 2) Mix 100mL formamide solution and 1.3g emulsifier CTAB (cetyltrimethylammonium bromide) solution, and mechanically stir for 40min at 60°C to prepare emulsifier dispersed phase (dispersed phase B);

[0103] 3) Add the paraffin / TEOS mixed dispersion phase to the emulsifier dispersion phase, and mechanically mix and react for 4 hours at 50°C to obtain a uniformly dispersed and uniform emulsion;

[0104] 4) Prepare a 1.8mol / L hydrochloric acid solution, add it into a three-necked flask at a rate of 2 drops / s until the precipitate no longer increases significantly, react for 4 hours, and obtain a white precipitate;

[0105] ...

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Abstract

The invention belongs to the field of thermal insulation coatings, and particularly relates to a paraffin coated SiO2 color phase change microcapsule as well as a preparation method and application thereof. The paraffin coated SiO2 color phase change microcapsule takes a phase change microcapsule of silica coated paraffin as a carrier, and organic reactive dye molecules are fixed on the surface of the carrier; the phase change microcapsule with the paraffin coated with the silicon dioxide is of a core-shell structure, the paraffin serves as a microcapsule core, and the outer surface of the paraffin is coated with the silicon dioxide serving as a shell layer. The excellent ultraviolet absorption capacity of silicon dioxide and reactive dye molecules is utilized, the ultraviolet absorption capacity of a microcapsule sample is remarkably increased, the ultraviolet-proof capacity of the coating can be improved when the microcapsule is added into the interior wall coating, and due to the fact that the heat conductivity of the microcapsule is improved through a silicon dioxide inorganic shell, temperature adjustment of the coating is quicker.

Description

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Claims

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Application Information

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Owner XIAO HLDG