Phase Change Materials (PCM) are a new type of material that can utilize the latent heat released or absorbed by substances during phase transition to achieve heat transfer control

Thermal conductive phase change materialIt is a new type of high-efficiency thermal management material that has the characteristic of absorbing or releasing a large amount of heat during temperature changes, and can achieve heat transfer through phase change, thereby achieving better energy-saving and environmental protection effects. This article will provide a detailed introduction to the basic concepts, application fields, and research progress of thermally conductive phase change materials.

1、 Basic concepts

Phase Change Materials (PCM) are a new type of material that can utilize the latent heat released or absorbed by substances during phase transition to achieve heat transfer control. PCM is divided into two categories: organic phase change materials and inorganic phase change materials. Organic phase change materials include fatty acids, polyethylene glycol, etc., while inorganic phase change materials include silicone oil, salts, etc. The biggest feature of PCM is its ability to absorb or release a large amount of heat during phase transition, allowing temperature changes to be controlled.

2、 Application Fields

1. Construction field

The construction field is one of the main application areas of thermal phase change materials. Due to its ability to absorb heat at high indoor temperatures and release heat at low temperatures, PCM can be used to improve the indoor thermal environment of buildings. For example, in summer, PCM can absorb sunlight during the day and heat generated by indoor appliances and other devices, and release it at night, thereby reducing indoor temperature and improving living comfort.

2. In the field of electronic products

Electronic products are another important application field. Due to the increasing integration of modern electronic products, their heat generation is also growing, leading to increasingly prominent heat dissipation issues. At the same time, electronic products generally need to work in high-temperature environments, which requires more efficient heat dissipation measures. PCM can absorb or release heat through phase change, achieving fast and efficient heat dissipation, and is therefore widely used in the heat dissipation system of electronic products.

3. Energy storage field

Energy storage is another important application area of thermally conductive phase change materials. Due to the ability of PCM to absorb or release a large amount of heat during phase transition, it can be used to achieve low-temperature heat storage and thus store energy. This method is more efficient and environmentally friendly than traditional energy storage methods, and has therefore been widely researched and applied.

3、 Research progress

With the continuous development of technology, research on thermally conductive phase change materials is also deepening. At present, scholars at home and abroad mainly conduct research from the following aspects:

1. Research and development of new phase change materials

Due to the different properties of different types of phase change materials in the process of heat absorption or release, researchers are searching for new phase change materials to meet the needs of different fields. For example, in the field of architecture, researchers are developing a new type of cellular PCM to improve its heat transfer efficiency and

Energy storage density.

2. Research on Modification of Phase Change Materials

In order to improve the heat transfer efficiency and energy storage performance of phase change materials, researchers are also conducting modification studies on phase change materials. For example, adding thermal conductivity agents or nanoparticles to inorganic phase change materials can improve their heat transfer efficiency; Adding porous fillers to organic phase change materials can increase their surface area, improve their adsorption capacity and thermal storage performance.

3. Application research of PCM in energy conservation and emission reduction

In recent years, people's attention to environmental protection and energy has been increasing, so the application research of PCM in energy conservation and emission reduction has also received increasing attention. For example, in the field of automobiles, researchers are developing a new type of PCM technology to improve fuel economy and reduce exhaust emissions; In the industrial field, PCM is also widely used in waste heat recovery and cooling systems to achieve efficient energy utilization.

Therefore, as a new type of thermal management material, thermally conductive phase change materials have broad application prospects. In the future, with the continuous advancement of science and technology, it is believed that PCM will play an important role in more fields, bringing more convenience and contributions to people.