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Sulfate-based styrene/hydrogenated conjugated diene/styrene block copolymer ionomer composite phase change material and preparation method thereof

A technology of composite phase change materials and styrene blocks, which is applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the problems of low phase change enthalpy of composite materials, small gel force, etc., and achieve phase change enthalpy The effects of small loss, strong gelation force, and easy control of preparation conditions

Inactive Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the methods reported above, although SEBS has a certain setting effect on paraffin phase change materials, its force is mainly the chain entanglement of the main chain and the π-π effect of the benzene ring, and the gel force is relatively small. Only when the amount of glue factor added is about 20% can it have a good setting effect
However, by increasing the specific gravity of the gel factor to achieve the purpose of setting the shape, it will inevitably lead to a decrease in the phase transition enthalpy of the composite material.

Method used

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  • Sulfate-based styrene/hydrogenated conjugated diene/styrene block copolymer ionomer composite phase change material and preparation method thereof
  • Sulfate-based styrene/hydrogenated conjugated diene/styrene block copolymer ionomer composite phase change material and preparation method thereof
  • Sulfate-based styrene/hydrogenated conjugated diene/styrene block copolymer ionomer composite phase change material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 4g of solid paraffin wax with a melting point of 55-50°C and a phase change enthalpy of 205.5J / g, melt it in a 25mm×40mm sample bottle, add hydrogenated styrene-butadiene-styrene triblock copolymer (SEBS ), so that the mass percentage is 7%, heated and stirred until completely dissolved, and after the mixture is clarified, it is naturally cooled to obtain the SEBS composite phase change material.

[0037] The phase change enthalpy of the phase change material obtained in this example is 155.7 J / g, the phase change temperature is 59.43° C., and the gel disassociation temperature of the phase change gel is 55° C. by differential scanning calorimetry (DSC). The gel-sol temperature was 72°C.

Embodiment 2

[0039] Take 4g of solid paraffin wax with a melting point of 55-50°C and a phase change enthalpy of 205.5J / g, melt it in a 25mm×40mm sample bottle, and add SEBS sulfonic acid sodium salt with a sulfonation degree of 7.35% to make it a mass percentage of 4 %, heated and stirred until completely dissolved, and after the mixture was clarified, cooled naturally to prepare SEBS sulfonate ionomer composite shape-setting phase change material.

[0040] The phase change enthalpy of the phase change material obtained in this embodiment is 199.4J / g, the phase change temperature is 59.05°C, and the gel disassociation temperature of the phase change gel is 57°C, as tested by differential scanning calorimeter (DSC). The gel-sol temperature was 52°C.

Embodiment 3

[0042] Take 4g of solid paraffin wax with a melting point of 55-50°C and a phase change enthalpy of 205.5J / g, melt it in a 25mm×40mm sample bottle, and add SEBS sulfonic acid sodium salt with a sulfonation degree of 7.35% to make it 5% by mass %, heated and stirred until completely dissolved, and after the mixture was clarified, cooled naturally to obtain a SEBS composite shape-setting phase-change material.

[0043] The phase change enthalpy of the phase change material obtained in this example is 197.5 J / g, the phase change temperature is 59.23° C., and the gel disassociation temperature of the phase change gel is 55° C. through differential scanning calorimetry (DSC). The gel-sol temperature was 53°C.

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Abstract

The invention discloses a sulfate-based styrene / hydrogenated conjugated diene / styrene block copolymer ionomer composite phase change material and a preparation method thereof. The composite phase change material is prepared from an organic phase change material and a sulfate-based styrene / hydrogenated conjugated diene / styrene block copolymer ionomer. The composite material; the composite phase change material is prepared by using a solid-liquid organic phase change material as a heat storage material and adopting the sulfate-based styrene / hydrogenated conjugated diene / styrene block copolymer ionomer as a supporting material; the prepared composite shape-stabilized phase change material is high in content of phase change component, higher in phase change latent heat, has repeated processability, and is simple in preparation process and lower in cost, thus having good application performance and broad application prospect.

Description

technical field [0001] The invention relates to a shape-setting phase change material and a preparation method thereof, in particular to a sulfate-based styrene / hydrogenated conjugated diene / styrene block copolymer (S-R-S) ionomer composite phase change material and a preparation method thereof , belongs to the technical field of phase change materials. Background technique [0002] Phase change materials (PCM, Phase Change Materials) have attracted widespread attention as a clean and efficient thermal energy storage material, and they have broad application prospects in solar energy utilization, building energy conservation, and power peak regulation. Among them, paraffin phase change materials are widely used due to the advantages of adjustable phase change temperature, large phase change latent heat, no supercooling and phase separation, good cycle performance, low cost and abundant reserves, but it also has some important Disadvantages, due to the solid-liquid phase tra...

Claims

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Application Information

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IPC IPC(8): C09K5/06
Inventor 张海良梁红文杨卓莫笑君刘薇
Owner CHINA PETROLEUM & CHEM CORP