Why sometimes we say thermally conductive plastics better than aluminum?

The reason why thermally conductive plastics can be better than aluminum in some cases is mainly based on the following advantages:

1. Light specific gravity:

The density of thermally conductive plastics is usually lower than that of aluminum, which means that the weight of thermally conductive plastics is lighter under the same volume. This lightweight feature offers significant advantages for applications that require weight reduction, such as aerospace, automotive, electronics, and more.

2. Easy forming: thermally conductive plastics have good plasticity, and complex shapes can be molded through injection molding, extrusion and other processes, and no subsequent processing is required for one-time molding. In contrast, the forming process of aluminum is usually more complex, requiring multiple steps such as die casting, grinding, and polishing. As a result, thermally conductive plastics have advantages in terms of molding efficiency and flexibility.

3. Low cost: Although the price per unit mass of thermally conductive plastics may be higher than that of aluminum, the cost of the entire manufacturing process may be flat or lower due to the simple molding process of thermally conductive plastics, high efficiency, and no subsequent processing. Especially in high-volume production, the cost advantage of thermally conductive plastics is even more obvious.

4. High insulation: As an insulating material, thermally conductive plastic can avoid potential safety hazards caused by electrical conductivity. In applications that require high insulating properties, such as heat dissipation components for electronic devices, thermally conductive plastics offer significant advantages.

5. Environmental protection: There is almost no toxic pollution in the production process of thermally conductive plastics, while the production process of aluminum may involve electroplating and other processes, resulting in pollutants such as waste liquid. Therefore, thermally conductive plastics have more advantages in terms of environmental protection.

In addition, thermally conductive plastics also have good thermal conductivity, halogen-free flame retardancy, stable color performance, and good electrical insulation properties. These properties make thermally conductive plastics play an important role in heat dissipation solutions such as LED lighting products, opening up more possibilities for innovative heat sink designs.