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Paraffin microcapsule phase change heat storage and insulation coating and preparing method

A technology of paraffin microcapsules and phase change heat storage, which is applied in the fields of coating, sustainable manufacturing/processing, chemical industry, etc. It can solve the problems of coating cracking, loss of phase change materials, and no phase change heat storage function, etc., to achieve Effect of improving stability and durability, avoiding loss and extravasation

Inactive Publication Date: 2010-03-03
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the technical problems that the existing thermal insulation coating does not have the function of phase change heat storage, the loss of phase change material in the phase change heat storage thermal insulation coating, and the cracking of the coating caused by high content of paraffin microcapsules. Novel thermal insulation coating with heat storage function and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 1.8kg of polyvinyl alcohol into the kettle, then add 48L of water, keep the temperature at 80°C, and stir at a speed of 800rmp to completely dissolve the polyvinyl alcohol, and then add 2.93kg of urea. Use 0.5 mol / L hydrochloric acid to adjust the pH value of the solution to 2, and then add 6.3 kg of pulverized paraffin until the paraffin is completely dissolved. Control the temperature at 70°C, add 5.52L of formaldehyde solution, react for 2 hours, then add 0.25kg of resorcinol, continue to react for 1.5 hours. Centrifugal filtration, wash the product three times with 80°C hot water, and then centrifugal filtration, the product is powder.

[0020] The enthalpy of paraffin microcapsules is 110J / g, the range is 40-80°C, the peak value is 64°C, and the average particle size is 45μm. Embodiment 2: Paraffin microcapsule phase change thermal storage thermal insulation coating of high chlorinated polyethylene system

Embodiment 2

[0020] The enthalpy of paraffin microcapsules is 110J / g, the range is 40-80°C, the peak value is 64°C, and the average particle size is 45μm. Embodiment 2: Paraffin microcapsule phase change thermal storage thermal insulation coating of high chlorinated polyethylene system

[0021] (1) 400g high chlorinated polyethylene resin is dissolved in 600g toluene composition, prepares 40% high chlorinated polyethylene resin liquid.

[0022] (2) get the high chlorinated polyethylene resin liquid of 280g 40%, under the stirring of high-speed shear disperser, add 150g floating aluminum powder, 200g paraffin microcapsules, 150g micaceous iron oxide ash, 240g weight respectively in resin liquid Calcium carbonate and other components, so that the components are fully mixed evenly.

[0023] (3) Finally, disperse at high speed, add 3g of dispersant EFKA5065 and 10g of cellulose acetate; continue high-speed shear dispersion for 0.5-1.0 hours to obtain paraffin microcapsule phase change thermal...

Embodiment 3

[0024] Embodiment 3: Paraffin microcapsule phase change thermal storage thermal insulation coating of high chlorinated polyethylene system

[0025] (1) 400g high chlorinated polyethylene resin is dissolved in 600g toluene composition, prepares 40% high chlorinated polyethylene resin liquid.

[0026] (2) get the high chlorinated polyethylene resin liquid of 320g 40%, under the stirring of high-speed shear disperser, add 150g non-leafing type aluminum powder (average particle diameter is 90 μ m), 300g paraffin microcapsule ( Can adopt the paraffin microcapsule of embodiment 1, or prepared by other methods), 100g micaceous iron oxide ash, 200g ground calcium carbonate and other components, make each component fully mix evenly.

[0027] (3) Finally, disperse at high speed, add 3g of dispersant EFKA5065 and 10g of cellulose acetate; continue high-speed shear dispersion for 0.5-1.0 hours to obtain paraffin microcapsule phase change thermal storage thermal insulation coating.

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Abstract

The invention relates to an insulation coating based on phase change heat storage mechanism and a preparing method thereof. In the method, resin is taken as a substrate, and microcapsule organic phasechange material paraffin is doped so as to form novel insulation coating with a phase change heat storage function. The invention adopts the microcapsule technology to solve loss and exosmosis of phase change material, and adopts a solvent volatilization drying filming mode to solve the problem of coating crack under high paraffin microcapsule content. The paraffin microcapsule phase change heatstorage and insulation coating can be applied to vehicles, ships, oil (gas) storage tanks, refrigeration equipment and conditioning equipment, and can greatly reduce the thickness of an insulation layer, simplify construction technology, improve the utilization efficiency of energy and save volume and space for equipment to insulate heat.

Description

technical field [0001] The invention relates to the technical field of thermal functional coatings, in particular to a phase change thermal storage thermal insulation coating. Background technique [0002] In addition to the functions of decoration, protection and marking, modern coatings also endow objects with some special functions, such as conductivity, electromagnetic shielding, high temperature resistance, damping, self-cleaning, camouflage, etc. Among many functional coatings, thermal insulation coating is an important thermal functional coating. Its function is to control the temperature change of objects caused by various factors, protect objects from overheating and overcooling, and have the effect of saving energy and reducing consumption. At present, thermal insulation coatings mainly adopt mechanisms and modes such as adjusting the absorption / radiation ratio of the coating, increasing the thermal resistance of the coating, and cooling by infrared radiation. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/28C09D153/00C09D7/12C09D5/00
CPCY02P20/10
Inventor 晏华余荣升徐仲诚朱霞任定宇陈淑莲
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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