What is the ingredient of melamine foam?
The main ingredient of melamine foam is melamine formaldehyde resin, which is a type of thermosetting plastic. Melamine foam is made by combining melamine resin with other ingredients such as sodium bisulfite and other additives, which are then heated and cured into a foam-like structure.
Melamine foam has a unique open-cell structure that gives it its characteristic properties, including its high surface area and excellent sound-absorbing and cleaning abilities. When melamine foam is wet, its microscopic cells become more open, making it even more effective at cleaning and scrubbing away dirt and stains.
It is important to note that melamine foam is not toxic or harmful to humans, as it is made from non-toxic ingredients and does not contain any harmful chemicals or substances. However, it is not intended for consumption and should be kept out of reach of children and pets.

What is the difference between melamine foam and pu foam?
Melamine foam and PU foam are two different types of foam with different properties and uses.
Melamine foam is a type of foam made from melamine resin, which is a type of thermosetting plastic. It has a unique open-cell structure that gives it its characteristic properties, including its high surface area and excellent sound-absorbing and cleaning abilities. It is often used as a cleaning product due to its ability to remove dirt and stains from surfaces, and because of its unique open-pore structure, it has a strong effect on noise reduction, and is also commonly used in acoustic noise reduction materials.
PU foam, or polyurethane foam, is a type of foam made from a polymer material called polyurethane. PU foam has a closed-cell structure that gives it good insulation and cushioning properties. PU foam is often used in insulation, upholstery, and packaging applications due to its excellent insulation properties and ability to conform to different shapes and sizes.
In summary, the main difference between melamine foam and PU foam is their composition and properties. Melamine foam has an open-cell structure and is good for cleaning and sound absorption, while PU foam has a closed-cell structure and is good for insulation and cushioning.

What is the advantage and disadvantage? of melamine foam over PU foam ?
Melamine foam and PU foam have different advantages and disadvantages, depending on the specific application and use case.
Advantages of melamine resin foam :
- melamine resin foam has a high surface area and can be used as a cleaning product to remove dirt and stains from surfaces.
- melamine resin foam has good sound-absorbing properties and can be used in acoustic applications to reduce noise.
- melamine resin foam is non-toxic and does not contain harmful chemicals, making it safe for use in a variety of applications.
Advantages of PU foam:
- PU foam has good insulation properties and can be used for thermal insulation in buildings and other applications.
- PU foam has good cushioning properties and can be used for shock absorption in packaging, furniture, and other applications.
- PU foam is available in a range of densities and can be customized for specific applications and requirements.
In terms of disadvantages, melamine foam can be relatively expensive compared to other types of foam, and may not be suitable for all applications. PU foam, on the other hand, can emit volatile organic compounds (VOCs) during production and may not be suitable for use in environments where air quality is a concern.

In summary, the choice between melamine foam and PU foam will depend on the specific requirements of the application, such as the need for cleaning, sound absorption, insulation, or cushioning properties, as well as considerations such as cost, environmental impact, and safety.