Introduction: Accepting the question is the only course of new materials in the development, from the question to the affirmation, the market needs to continue to verify. There has always been talk about whether aerogel coatings are feasible. In this article, we will talk about the characteristics and applications of aerogel coatings, and further understand aerogel with you.

1. Where does aerogel paint come from?

Before we can understand aerogel coatings, we first need to understand what aerogel is.

Prior to this, Utsen Xiaobian has introduced the relevant knowledge of aerogel to everyone from multiple dimensions, including some common application scenarios, production processes and so on.

If we want to introduce aerogel more simply, we can summarize it according to our own industry: The new star of the insulation material industry, not only has the performance of traditional insulation materials, but various case experiments have proved that it has a higher cost performance than traditional materials.

At present, most aerogel coatings are made of common and high-performance silica aerogel as the main raw material. Through the process, the hydrophobic silica aerogel is dispersed in the water medium, which maximizes the structure of the aerogel and maintains its excellent performance, so that the aerogel broadens more application scenarios.

2. What are the advantages of aerogel coatings?

In the "Thermal insulation and energy Saving Properties of Aerogel reflective Thermal insulation Composite Coatings" published in the journal of Building Energy Efficiency, it can be learned that:

The solar reflectance, thermal conductivity and thermal insulation temperature difference of the aerogel reflective thermal insulation composite coating were tested, and the energy-saving effect of the composite coating applied to the building exterior wall in hot summer and warm winter area was simulated and analyzed.

The results show that the solar reflectance of the composite coatings is 89%, the near-infrared reflectance is 91%, the thermal conductivity is 0.059 W/(m·K), the thermal insulation temperature difference can reach 33.8℃, and the thermal insulation performance is greatly improved compared with the traditional coatings. Applied in hot summer and warm winter areas, it can reduce the annual refrigeration energy consumption of buildings by 28% to 34%, and has greater energy saving and carbon reduction potential in the climate area where the demand for refrigeration is mainly. The results can provide data reference for the application of aerogel reflective thermal insulation composite coatings in the field of building energy saving and carbon reduction.

The reason why the aerogel coating has excellent thermal insulation performance is that the nanostructure realizes the infinite length of the pore wall link, resulting in a long and narrow heat conduction path and slow heat conduction. At the same time, the pore diameter of the nano is smaller than the free path of air molecules, and air convection cannot effectively occur, which improves the thermal insulation ability of the material.

We can simply understand that the nanostructure of the aerogel is like a honeycomb, and the amplitude of heat conduction is larger than the holes, and there are many holes, similar to the maze, so the heat is difficult to conduct.

On this basis, adding certain anti-radiation components to the aerogel coating can effectively improve the anti-radiation thermal performance. The aerogel coating relies on the advantages of low thermal conductivity and class A non-combustible of the raw material aerogel itself, and has the functions of heat reflection and heat barrier to cooperatively block the transfer of heat.

At present, aerogel coatings are often used in building wall insulation. Utsen Xiaobian has launched video content focusing on the advantages and use methods of aerogel coatings, so that you can understand the advantages of aerogel coatings thermal insulation and convenient construction more efficiently and intuitively.