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Phase Changes

Phase Changes

Phase transitions play an important theoretical and practical role in the study of heat flow. In melting or fusion, a solid turns into a liquid; the opposite process is freezing. In evaporation, a liquid turns into a gas; the opposite process is condensation.
A substance melts or freezes at a temperature called its melting point and boils or condenses at its boiling point. These temperatures depend on pressure. High pressure favors the denser form of the substance, so typically, high pressure...

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Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

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Published on: January 19, 2016

Flexible engineering of advanced phase change materials.

Piao Cheng^1,2, Zhaodi Tang³, Yan Gao³

¹Institute of Advanced Materials, Beijing Normal University, Beijing 100875, PR China.

|May 6, 2022

Summary

Flexible composite phase change materials (PCMs) overcome leakage and brittleness issues for better thermal energy storage. This review details their fabrication, evaluation, and future potential in energy-efficient systems.

Keywords:

Inorganic materials Materials chemistry Materials science Materials synthesis

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Area of Science:

Materials Science
Energy Storage
Thermal Engineering

Background:

Traditional phase change materials (PCMs) suffer from liquid leakage, rigidity, and brittle failure, limiting their use in energy-efficient systems.
Flexible composite PCMs offer a solution by enduring deformation and ensuring good contact with devices for thermal regulation.

Purpose of the Study:

To systematically review fabrication techniques, flexibility evaluation, advanced functions, and recent progress in flexible composite PCMs.
To provide insights into challenges and future perspectives for flexible PCMs in thermal regulation.

Main Methods:

Literature review and synthesis of existing research on flexible composite PCMs.
Analysis of fabrication methods, flexibility testing, and functional advancements.
Discussion of current challenges and future research directions.

Main Results:

Flexible composite PCMs demonstrate enhanced mechanical properties and improved thermal energy storage capabilities.
Various fabrication techniques and evaluation strategies for flexible PCMs have been developed.
Significant progress has been made in developing advanced functions for flexible PCMs.

Conclusions:

Flexible composite PCMs represent a promising advancement for thermal energy storage and regulation.
Addressing current challenges will further unlock the potential of these materials in energy-efficient applications.
This review offers guidance for engineering advanced, flexible, multifunctional PCMs.